From e6e5906b6e0a81718066ca43aef57515026c6624 Mon Sep 17 00:00:00 2001 From: pbrook Date: Sun, 22 Oct 2006 00:18:54 +0000 Subject: [PATCH] ColdFire target. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2196 c046a42c-6fe2-441c-8c8c-71466251a162 --- Makefile.target | 7 + configure | 10 +- cpu-all.h | 7 + cpu-exec.c | 62 +- disas.c | 4 + fpu/softfloat-native.c | 16 + fpu/softfloat-native.h | 2 + fpu/softfloat.c | 11 + fpu/softfloat.h | 2 + gdbstub.c | 67 + hw/pl110.c | 5 +- linux-user/elfload.c | 25 + linux-user/m68k-semi.c | 216 +++ linux-user/m68k-sim.c | 171 +++ linux-user/m68k/syscall.h | 22 + linux-user/m68k/syscall_nr.h | 283 ++++ linux-user/m68k/termbits.h | 215 +++ linux-user/main.c | 121 ++ linux-user/mmap.c | 2 +- linux-user/qemu.h | 3 + linux-user/syscall.c | 11 +- linux-user/syscall_defs.h | 67 +- qemu-doc.texi | 6 +- target-m68k/cpu.h | 140 ++ target-m68k/exec.h | 47 + target-m68k/helper.c | 149 ++ target-m68k/m68k-qreg.h | 12 + target-m68k/op-hacks.h | 83 + target-m68k/op.c | 678 +++++++++ target-m68k/qregs.def | 34 + target-m68k/translate.c | 2759 ++++++++++++++++++++++++++++++++++ translate-all.c | 2 + 32 files changed, 5227 insertions(+), 12 deletions(-) create mode 100644 linux-user/m68k-semi.c create mode 100644 linux-user/m68k-sim.c create mode 100644 linux-user/m68k/syscall.h create mode 100644 linux-user/m68k/syscall_nr.h create mode 100644 linux-user/m68k/termbits.h create mode 100644 target-m68k/cpu.h create mode 100644 target-m68k/exec.h create mode 100644 target-m68k/helper.c create mode 100644 target-m68k/m68k-qreg.h create mode 100644 target-m68k/op-hacks.h create mode 100644 target-m68k/op.c create mode 100644 target-m68k/qregs.def create mode 100644 target-m68k/translate.c diff --git a/Makefile.target b/Makefile.target index aa2244b00f..773f331a9f 100644 --- a/Makefile.target +++ b/Makefile.target @@ -197,6 +197,9 @@ OBJS+=nwfpe/fpa11.o nwfpe/fpa11_cpdo.o \ nwfpe/fpa11_cpdt.o nwfpe/fpa11_cprt.o nwfpe/fpopcode.o nwfpe/single_cpdo.o \ nwfpe/double_cpdo.o nwfpe/extended_cpdo.o arm-semi.o endif +ifeq ($(TARGET_ARCH), m68k) +OBJS+= m68k-sim.o m68k-semi.o +endif SRCS:= $(OBJS:.o=.c) OBJS+= libqemu.a @@ -241,6 +244,10 @@ ifeq ($(TARGET_BASE_ARCH), sh4) LIBOBJS+= op_helper.o helper.o endif +ifeq ($(TARGET_BASE_ARCH), m68k) +LIBOBJS+= helper.o +endif + # NOTE: the disassembler code is only needed for debugging LIBOBJS+=disas.o ifeq ($(findstring i386, $(TARGET_ARCH) $(ARCH)),i386) diff --git a/configure b/configure index a2fde23aee..84f8ee0990 100755 --- a/configure +++ b/configure @@ -362,7 +362,7 @@ if test -z "$target_list" ; then fi # the following are Linux specific if [ "$user" = "yes" ] ; then - target_list="i386-user arm-user armeb-user sparc-user ppc-user mips-user mipsel-user $target_list" + target_list="i386-user arm-user armeb-user sparc-user ppc-user mips-user mipsel-user m68k-user $target_list" fi else target_list=`echo "$target_list" | sed -e 's/,/ /g'` @@ -727,6 +727,7 @@ target_bigendian="no" [ "$target_cpu" = "ppc64" ] && target_bigendian=yes [ "$target_cpu" = "mips" ] && target_bigendian=yes [ "$target_cpu" = "sh4eb" ] && target_bigendian=yes +[ "$target_cpu" = "m68k" ] && target_bigendian=yes target_softmmu="no" if expr $target : '.*-softmmu' > /dev/null ; then target_softmmu="yes" @@ -822,6 +823,11 @@ elif test "$target_cpu" = "sh4" -o "$target_cpu" = "sh4eb" ; then echo "#define TARGET_ARCH \"sh4\"" >> $config_h echo "#define TARGET_SH4 1" >> $config_h bflt="yes" +elif test "$target_cpu" = "m68k" ; then + echo "TARGET_ARCH=m68k" >> $config_mak + echo "#define TARGET_ARCH \"m68k\"" >> $config_h + echo "#define TARGET_M68K 1" >> $config_h + bflt="yes" else echo "Unsupported target CPU" exit 1 @@ -839,7 +845,7 @@ if test "$target_user_only" = "yes" ; then echo "#define CONFIG_USER_ONLY 1" >> $config_h fi -if test "$target_cpu" = "arm" -o "$target_cpu" = "armeb" -o "$target_cpu" = "sparc" -o "$target_cpu" = "sparc64"; then +if test "$target_cpu" = "arm" -o "$target_cpu" = "armeb" -o "$target_cpu" = "sparc" -o "$target_cpu" = "sparc64" -o "$target_cpu" = "m68k"; then echo "CONFIG_SOFTFLOAT=yes" >> $config_mak echo "#define CONFIG_SOFTFLOAT 1" >> $config_h fi diff --git a/cpu-all.h b/cpu-all.h index a8628b5020..ed5355319a 100644 --- a/cpu-all.h +++ b/cpu-all.h @@ -725,6 +725,13 @@ void page_unprotect_range(target_ulong data, target_ulong data_size); #define cpu_gen_code cpu_ppc_gen_code #define cpu_signal_handler cpu_ppc_signal_handler +#elif defined(TARGET_M68K) +#define CPUState CPUM68KState +#define cpu_init cpu_m68k_init +#define cpu_exec cpu_m68k_exec +#define cpu_gen_code cpu_m68k_gen_code +#define cpu_signal_handler cpu_m68k_signal_handler + #elif defined(TARGET_MIPS) #define CPUState CPUMIPSState #define cpu_init cpu_mips_init diff --git a/cpu-exec.c b/cpu-exec.c index 0b5f7f3d86..5950625fb9 100644 --- a/cpu-exec.c +++ b/cpu-exec.c @@ -40,14 +40,14 @@ int tb_invalidated_flag; //#define DEBUG_EXEC //#define DEBUG_SIGNAL -#if defined(TARGET_ARM) || defined(TARGET_SPARC) +#if defined(TARGET_ARM) || defined(TARGET_SPARC) || defined(TARGET_M68K) /* XXX: unify with i386 target */ void cpu_loop_exit(void) { longjmp(env->jmp_env, 1); } #endif -#if !(defined(TARGET_SPARC) || defined(TARGET_SH4)) +#if !(defined(TARGET_SPARC) || defined(TARGET_SH4) || defined(TARGET_M68K)) #define reg_T2 #endif @@ -194,6 +194,10 @@ static inline TranslationBlock *tb_find_fast(void) flags = env->hflags & (MIPS_HFLAG_TMASK | MIPS_HFLAG_BMASK); cs_base = 0; pc = env->PC; +#elif defined(TARGET_M68K) + flags = env->fpcr & M68K_FPCR_PREC; + cs_base = 0; + pc = env->pc; #elif defined(TARGET_SH4) flags = env->sr & (SR_MD | SR_RB); cs_base = 0; /* XXXXX */ @@ -370,6 +374,10 @@ int cpu_exec(CPUState *env1) saved_regwptr = REGWPTR; #endif #elif defined(TARGET_PPC) +#elif defined(TARGET_M68K) + env->cc_op = CC_OP_FLAGS; + env->cc_dest = env->sr & 0xf; + env->cc_x = (env->sr >> 4) & 1; #elif defined(TARGET_MIPS) #elif defined(TARGET_SH4) /* XXXXX */ @@ -632,6 +640,12 @@ int cpu_exec(CPUState *env1) cpu_dump_state(env, logfile, fprintf, 0); #elif defined(TARGET_PPC) cpu_dump_state(env, logfile, fprintf, 0); +#elif defined(TARGET_M68K) + cpu_m68k_flush_flags(env, env->cc_op); + env->cc_op = CC_OP_FLAGS; + env->sr = (env->sr & 0xffe0) + | env->cc_dest | (env->cc_x << 4); + cpu_dump_state(env, logfile, fprintf, 0); #elif defined(TARGET_MIPS) cpu_dump_state(env, logfile, fprintf, 0); #elif defined(TARGET_SH4) @@ -846,6 +860,11 @@ int cpu_exec(CPUState *env1) REGWPTR = saved_regwptr; #endif #elif defined(TARGET_PPC) +#elif defined(TARGET_M68K) + cpu_m68k_flush_flags(env, env->cc_op); + env->cc_op = CC_OP_FLAGS; + env->sr = (env->sr & 0xffe0) + | env->cc_dest | (env->cc_x << 4); #elif defined(TARGET_MIPS) #elif defined(TARGET_SH4) /* XXXXX */ @@ -1103,6 +1122,45 @@ static inline int handle_cpu_signal(unsigned long pc, unsigned long address, return 1; } +#elif defined(TARGET_M68K) +static inline int handle_cpu_signal(unsigned long pc, unsigned long address, + int is_write, sigset_t *old_set, + void *puc) +{ + TranslationBlock *tb; + int ret; + + if (cpu_single_env) + env = cpu_single_env; /* XXX: find a correct solution for multithread */ +#if defined(DEBUG_SIGNAL) + printf("qemu: SIGSEGV pc=0x%08lx address=%08lx w=%d oldset=0x%08lx\n", + pc, address, is_write, *(unsigned long *)old_set); +#endif + /* XXX: locking issue */ + if (is_write && page_unprotect(address, pc, puc)) { + return 1; + } + /* see if it is an MMU fault */ + ret = cpu_m68k_handle_mmu_fault(env, address, is_write, 1, 0); + if (ret < 0) + return 0; /* not an MMU fault */ + if (ret == 0) + return 1; /* the MMU fault was handled without causing real CPU fault */ + /* now we have a real cpu fault */ + tb = tb_find_pc(pc); + if (tb) { + /* the PC is inside the translated code. It means that we have + a virtual CPU fault */ + cpu_restore_state(tb, env, pc, puc); + } + /* we restore the process signal mask as the sigreturn should + do it (XXX: use sigsetjmp) */ + sigprocmask(SIG_SETMASK, old_set, NULL); + cpu_loop_exit(); + /* never comes here */ + return 1; +} + #elif defined (TARGET_MIPS) static inline int handle_cpu_signal(unsigned long pc, unsigned long address, int is_write, sigset_t *old_set, diff --git a/disas.c b/disas.c index 27b6777923..04ea653552 100644 --- a/disas.c +++ b/disas.c @@ -186,6 +186,8 @@ void target_disas(FILE *out, target_ulong code, target_ulong size, int flags) disasm_info.mach = bfd_mach_ppc; #endif print_insn = print_insn_ppc; +#elif defined(TARGET_M68K) + print_insn = print_insn_m68k; #elif defined(TARGET_MIPS) #ifdef TARGET_WORDS_BIGENDIAN print_insn = print_insn_big_mips; @@ -385,6 +387,8 @@ void monitor_disas(CPUState *env, disasm_info.mach = bfd_mach_ppc; #endif print_insn = print_insn_ppc; +#elif defined(TARGET_M68K) + print_insn = print_insn_m68k; #elif defined(TARGET_MIPS) #ifdef TARGET_WORDS_BIGENDIAN print_insn = print_insn_big_mips; diff --git a/fpu/softfloat-native.c b/fpu/softfloat-native.c index bbdb3d66d9..1ef7cf29af 100644 --- a/fpu/softfloat-native.c +++ b/fpu/softfloat-native.c @@ -221,6 +221,11 @@ float128 float64_to_float128( float64 a STATUS_PARAM) /*---------------------------------------------------------------------------- | Software IEC/IEEE double-precision operations. *----------------------------------------------------------------------------*/ +float64 float64_trunc_to_int( float64 a STATUS_PARAM ) +{ + return trunc(a); +} + float64 float64_round_to_int( float64 a STATUS_PARAM ) { #if defined(__arm__) @@ -289,6 +294,17 @@ char float64_is_signaling_nan( float64 a1) } +char float64_is_nan( float64 a1 ) +{ + float64u u; + uint64_t a; + u.f = a1; + a = u.i; + + return ( LIT64( 0xFFE0000000000000 ) < (bits64) ( a<<1 ) ); + +} + #ifdef FLOATX80 /*---------------------------------------------------------------------------- diff --git a/fpu/softfloat-native.h b/fpu/softfloat-native.h index e7c08b89f4..05cf023f6d 100644 --- a/fpu/softfloat-native.h +++ b/fpu/softfloat-native.h @@ -214,6 +214,7 @@ float128 float64_to_float128( float64 STATUS_PARAM ); | Software IEC/IEEE double-precision operations. *----------------------------------------------------------------------------*/ float64 float64_round_to_int( float64 STATUS_PARAM ); +float64 float64_trunc_to_int( float64 STATUS_PARAM ); INLINE float64 float64_add( float64 a, float64 b STATUS_PARAM) { return a + b; @@ -265,6 +266,7 @@ INLINE char float64_unordered( float64 a, float64 b STATUS_PARAM) char float64_compare( float64, float64 STATUS_PARAM ); char float64_compare_quiet( float64, float64 STATUS_PARAM ); char float64_is_signaling_nan( float64 ); +flag float64_is_nan( float64 ); INLINE float64 float64_abs(float64 a) { diff --git a/fpu/softfloat.c b/fpu/softfloat.c index 5e846200ae..f24913a130 100644 --- a/fpu/softfloat.c +++ b/fpu/softfloat.c @@ -2483,6 +2483,17 @@ float64 float64_round_to_int( float64 a STATUS_PARAM ) } +float64 float64_trunc_to_int( float64 a STATUS_PARAM) +{ + int oldmode; + float64 res; + oldmode = STATUS(float_rounding_mode); + STATUS(float_rounding_mode) = float_round_to_zero; + res = float64_round_to_int(a STATUS_VAR); + STATUS(float_rounding_mode) = oldmode; + return res; +} + /*---------------------------------------------------------------------------- | Returns the result of adding the absolute values of the double-precision | floating-point values `a' and `b'. If `zSign' is 1, the sum is negated diff --git a/fpu/softfloat.h b/fpu/softfloat.h index fdc80f32db..3dec119e4f 100644 --- a/fpu/softfloat.h +++ b/fpu/softfloat.h @@ -237,6 +237,7 @@ char float32_lt_quiet( float32, float32 STATUS_PARAM ); char float32_compare( float32, float32 STATUS_PARAM ); char float32_compare_quiet( float32, float32 STATUS_PARAM ); char float32_is_signaling_nan( float32 ); +flag float64_is_nan( float64 a ); INLINE float32 float32_abs(float32 a) { @@ -269,6 +270,7 @@ float128 float64_to_float128( float64 STATUS_PARAM ); | Software IEC/IEEE double-precision operations. *----------------------------------------------------------------------------*/ float64 float64_round_to_int( float64 STATUS_PARAM ); +float64 float64_trunc_to_int( float64 STATUS_PARAM ); float64 float64_add( float64, float64 STATUS_PARAM ); float64 float64_sub( float64, float64 STATUS_PARAM ); float64 float64_mul( float64, float64 STATUS_PARAM ); diff --git a/gdbstub.c b/gdbstub.c index 6ad393f799..9e10c0cdce 100644 --- a/gdbstub.c +++ b/gdbstub.c @@ -434,6 +434,73 @@ static void cpu_gdb_write_registers(CPUState *env, uint8_t *mem_buf, int size) ptr += 8 * 12 + 4; cpsr_write (env, tswapl(*(uint32_t *)ptr), 0xffffffff); } +#elif defined (TARGET_M68K) +static int cpu_gdb_read_registers(CPUState *env, uint8_t *mem_buf) +{ + int i; + uint8_t *ptr; + CPU_DoubleU u; + + ptr = mem_buf; + /* D0-D7 */ + for (i = 0; i < 8; i++) { + *(uint32_t *)ptr = tswapl(env->dregs[i]); + ptr += 4; + } + /* A0-A7 */ + for (i = 0; i < 8; i++) { + *(uint32_t *)ptr = tswapl(env->aregs[i]); + ptr += 4; + } + *(uint32_t *)ptr = tswapl(env->sr); + ptr += 4; + *(uint32_t *)ptr = tswapl(env->pc); + ptr += 4; + /* F0-F7. The 68881/68040 have 12-bit extended precision registers. + ColdFire has 8-bit double precision registers. */ + for (i = 0; i < 8; i++) { + u.d = env->fregs[i]; + *(uint32_t *)ptr = tswap32(u.l.upper); + *(uint32_t *)ptr = tswap32(u.l.lower); + } + /* FP control regs (not implemented). */ + memset (ptr, 0, 3 * 4); + ptr += 3 * 4; + + return ptr - mem_buf; +} + +static void cpu_gdb_write_registers(CPUState *env, uint8_t *mem_buf, int size) +{ + int i; + uint8_t *ptr; + CPU_DoubleU u; + + ptr = mem_buf; + /* D0-D7 */ + for (i = 0; i < 8; i++) { + env->dregs[i] = tswapl(*(uint32_t *)ptr); + ptr += 4; + } + /* A0-A7 */ + for (i = 0; i < 8; i++) { + env->aregs[i] = tswapl(*(uint32_t *)ptr); + ptr += 4; + } + env->sr = tswapl(*(uint32_t *)ptr); + ptr += 4; + env->pc = tswapl(*(uint32_t *)ptr); + ptr += 4; + /* F0-F7. The 68881/68040 have 12-bit extended precision registers. + ColdFire has 8-bit double precision registers. */ + for (i = 0; i < 8; i++) { + u.l.upper = tswap32(*(uint32_t *)ptr); + u.l.lower = tswap32(*(uint32_t *)ptr); + env->fregs[i] = u.d; + } + /* FP control regs (not implemented). */ + ptr += 3 * 4; +} #elif defined (TARGET_MIPS) static int cpu_gdb_read_registers(CPUState *env, uint8_t *mem_buf) { diff --git a/hw/pl110.c b/hw/pl110.c index ecebe35eb3..16de16c0dd 100644 --- a/hw/pl110.c +++ b/hw/pl110.c @@ -185,10 +185,11 @@ static void pl110_update_display(void *opaque) addr = base; dirty = cpu_physical_memory_get_dirty(addr, VGA_DIRTY_FLAG); + new_dirty = dirty; for (i = 0; i < s->rows; i++) { - new_dirty = 0; - if ((addr & TARGET_PAGE_MASK) + src_width >= TARGET_PAGE_SIZE) { + if ((addr & ~TARGET_PAGE_MASK) + src_width >= TARGET_PAGE_SIZE) { uint32_t tmp; + new_dirty = 0; for (tmp = 0; tmp < src_width; tmp += TARGET_PAGE_SIZE) { new_dirty |= cpu_physical_memory_get_dirty(addr + tmp, VGA_DIRTY_FLAG); diff --git a/linux-user/elfload.c b/linux-user/elfload.c index 57b5ed27d8..042c65dc7a 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -288,6 +288,31 @@ static inline void init_thread(struct target_pt_regs *regs, struct image_info *i #endif +#ifdef TARGET_M68K + +#define ELF_START_MMAP 0x80000000 + +#define elf_check_arch(x) ( (x) == EM_68K ) + +#define ELF_CLASS ELFCLASS32 +#define ELF_DATA ELFDATA2MSB +#define ELF_ARCH EM_68K + +/* ??? Does this need to do anything? +#define ELF_PLAT_INIT(_r) */ + +static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop) +{ + regs->usp = infop->start_stack; + regs->sr = 0; + regs->pc = infop->entry; +} + +#define USE_ELF_CORE_DUMP +#define ELF_EXEC_PAGESIZE 8192 + +#endif + #ifndef ELF_PLATFORM #define ELF_PLATFORM (NULL) #endif diff --git a/linux-user/m68k-semi.c b/linux-user/m68k-semi.c new file mode 100644 index 0000000000..7f6dddaee4 --- /dev/null +++ b/linux-user/m68k-semi.c @@ -0,0 +1,216 @@ +/* + * m68k/ColdFire Semihosting ssycall interface + * + * Copyright (c) 2005 CodeSourcery, LLC. Written by Paul Brook. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "qemu.h" + +#define HOSTED_EXIT 0 +#define HOSTED_PUTCHAR 1 /* Obsolete */ +#define HOSTED_OPEN 2 +#define HOSTED_CLOSE 3 +#define HOSTED_READ 4 +#define HOSTED_WRITE 5 +#define HOSTED_LSEEK 6 +#define HOSTED_RENAME 7 +#define HOSTED_UNLINK 8 +#define HOSTED_STAT 9 +#define HOSTED_FSTAT 10 +#define HOSTED_GETTIMEOFDAY 11 +#define HOSTED_ISATTY 12 +#define HOSTED_SYSTEM 13 + +typedef uint32_t gdb_mode_t; +typedef uint32_t gdb_time_t; + +struct m68k_gdb_stat { + uint32_t gdb_st_dev; /* device */ + uint32_t gdb_st_ino; /* inode */ + gdb_mode_t gdb_st_mode; /* protection */ + uint32_t gdb_st_nlink; /* number of hard links */ + uint32_t gdb_st_uid; /* user ID of owner */ + uint32_t gdb_st_gid; /* group ID of owner */ + uint32_t gdb_st_rdev; /* device type (if inode device) */ + uint64_t gdb_st_size; /* total size, in bytes */ + uint64_t gdb_st_blksize; /* blocksize for filesystem I/O */ + uint64_t gdb_st_blocks; /* number of blocks allocated */ + gdb_time_t gdb_st_atime; /* time of last access */ + gdb_time_t gdb_st_mtime; /* time of last modification */ + gdb_time_t gdb_st_ctime; /* time of last change */ +}; + +struct gdb_timeval { + gdb_time_t tv_sec; /* second */ + uint64_t tv_usec; /* microsecond */ +}; + +#define GDB_O_RDONLY 0x0 +#define GDB_O_WRONLY 0x1 +#define GDB_O_RDWR 0x2 +#define GDB_O_APPEND 0x8 +#define GDB_O_CREAT 0x200 +#define GDB_O_TRUNC 0x400 +#define GDB_O_EXCL 0x800 + +static int translate_openflags(int flags) +{ + int hf; + + if (flags & GDB_O_WRONLY) + hf = O_WRONLY; + else if (flags & GDB_O_RDWR) + hf = O_RDWR; + else + hf = O_RDONLY; + + if (flags & GDB_O_APPEND) hf |= O_APPEND; + if (flags & GDB_O_CREAT) hf |= O_CREAT; + if (flags & GDB_O_TRUNC) hf |= O_TRUNC; + if (flags & GDB_O_EXCL) hf |= O_EXCL; + + return hf; +} + +static void translate_stat(struct m68k_gdb_stat *p, struct stat *s) +{ + p->gdb_st_dev = tswap16(s->st_dev); + p->gdb_st_ino = tswap16(s->st_ino); + p->gdb_st_mode = tswap32(s->st_mode); + p->gdb_st_nlink = tswap16(s->st_nlink); + p->gdb_st_uid = tswap16(s->st_uid); + p->gdb_st_gid = tswap16(s->st_gid); + p->gdb_st_rdev = tswap16(s->st_rdev); + p->gdb_st_size = tswap32(s->st_size); + p->gdb_st_atime = tswap32(s->st_atime); + p->gdb_st_mtime = tswap32(s->st_mtime); + p->gdb_st_ctime = tswap32(s->st_ctime); + p->gdb_st_blksize = tswap32(s->st_blksize); + p->gdb_st_blocks = tswap32(s->st_blocks); +} + +static inline uint32_t check_err(CPUM68KState *env, uint32_t code) +{ + if (code == (uint32_t)-1) { + env->sr |= CCF_C; + } else { + env->sr &= ~CCF_C; + env->dregs[0] = code; + } + return code; +} + +#define ARG(x) tswap32(args[x]) +void do_m68k_semihosting(CPUM68KState *env, int nr) +{ + uint32_t *args; + + args = (uint32_t *)env->dregs[1]; + switch (nr) { + case HOSTED_EXIT: + exit(env->dregs[0]); + case HOSTED_OPEN: + /* Assume name is NULL terminated. */ + check_err(env, open((char *)ARG(0), translate_openflags(ARG(2)), + ARG(3))); + break; + case HOSTED_CLOSE: + { + /* Ignore attempts to close stdin/out/err. */ + int fd = ARG(0); + if (fd > 2) + check_err(env, close(fd)); + else + check_err(env, 0); + break; + } + case HOSTED_READ: + check_err(env, read(ARG(0), (void *)ARG(1), ARG(2))); + break; + case HOSTED_WRITE: + check_err(env, write(ARG(0), (void *)ARG(1), ARG(2))); + break; + case HOSTED_LSEEK: + { + uint64_t off; + off = (uint32_t)ARG(2) | ((uint64_t)ARG(1) << 32); + check_err(env, lseek(ARG(0), off, ARG(3))); + } + break; + case HOSTED_RENAME: + /* Assume names are NULL terminated. */ + check_err(env, rename((char *)ARG(0), (char *)ARG(2))); + break; + case HOSTED_UNLINK: + /* Assume name is NULL terminated. */ + check_err(env, unlink((char *)ARG(0))); + break; + case HOSTED_STAT: + /* Assume name is NULL terminated. */ + { + struct stat s; + int rc; + rc = check_err(env, stat((char *)ARG(0), &s)); + if (rc == 0) { + translate_stat((struct m68k_gdb_stat *)ARG(2), &s); + } + } + break; + case HOSTED_FSTAT: + { + struct stat s; + int rc; + rc = check_err(env, fstat(ARG(0), &s)); + if (rc == 0) { + translate_stat((struct m68k_gdb_stat *)ARG(1), &s); + } + } + break; + case HOSTED_GETTIMEOFDAY: + { + struct timeval tv; + struct gdb_timeval *p; + int rc; + rc = check_err(env, gettimeofday(&tv, NULL)); + if (rc != 0) { + p = (struct gdb_timeval *)ARG(0); + p->tv_sec = tswap32(tv.tv_sec); + p->tv_usec = tswap64(tv.tv_usec); + } + } + break; + case HOSTED_ISATTY: + check_err(env, isatty(ARG(0))); + break; + case HOSTED_SYSTEM: + /* Assume name is NULL terminated. */ + check_err(env, system((char *)ARG(0))); + break; + default: + cpu_abort(env, "Unsupported semihosting syscall %d\n", nr); + } +} diff --git a/linux-user/m68k-sim.c b/linux-user/m68k-sim.c new file mode 100644 index 0000000000..667808e8c8 --- /dev/null +++ b/linux-user/m68k-sim.c @@ -0,0 +1,171 @@ +/* + * m68k simulator syscall interface + * + * Copyright (c) 2005 CodeSourcery, LLC. Written by Paul Brook. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "qemu.h" + +#define SYS_EXIT 1 +#define SYS_READ 3 +#define SYS_WRITE 4 +#define SYS_OPEN 5 +#define SYS_CLOSE 6 +#define SYS_BRK 17 +#define SYS_FSTAT 28 +#define SYS_ISATTY 29 +#define SYS_LSEEK 199 + +struct m86k_sim_stat { + uint16_t sim_st_dev; + uint16_t sim_st_ino; + uint32_t sim_st_mode; + uint16_t sim_st_nlink; + uint16_t sim_st_uid; + uint16_t sim_st_gid; + uint16_t sim_st_rdev; + uint32_t sim_st_size; + uint32_t sim_st_atime; + uint32_t sim_st_mtime; + uint32_t sim_st_ctime; + uint32_t sim_st_blksize; + uint32_t sim_st_blocks; +}; + +static inline uint32_t check_err(CPUM68KState *env, uint32_t code) +{ + env->dregs[0] = code; + if (code == (uint32_t)-1) { + env->dregs[1] = errno; + } else { + env->dregs[1] = 0; + } + return code; +} + +#define SIM_O_APPEND 0x0008 +#define SIM_O_CREAT 0x0200 +#define SIM_O_TRUNC 0x0400 +#define SIM_O_EXCL 0x0800 +#define SIM_O_NONBLOCK 0x4000 +#define SIM_O_NOCTTY 0x8000 +#define SIM_O_SYNC 0x2000 + +static int translate_openflags(int flags) +{ + int hf; + + switch (flags & 3) { + case 0: hf = O_RDONLY; break; + case 1: hf = O_WRONLY; break; + case 2: hf = O_RDWR; break; + default: hf = O_RDWR; break; + } + + if (flags & SIM_O_APPEND) hf |= O_APPEND; + if (flags & SIM_O_CREAT) hf |= O_CREAT; + if (flags & SIM_O_TRUNC) hf |= O_TRUNC; + if (flags & SIM_O_EXCL) hf |= O_EXCL; + if (flags & SIM_O_NONBLOCK) hf |= O_NONBLOCK; + if (flags & SIM_O_NOCTTY) hf |= O_NOCTTY; + if (flags & SIM_O_SYNC) hf |= O_SYNC; + + return hf; +} + +#define ARG(x) tswap32(args[x]) +void do_m68k_simcall(CPUM68KState *env, int nr) +{ + uint32_t *args; + + args = (uint32_t *)(env->aregs[7] + 4); + switch (nr) { + case SYS_EXIT: + exit(ARG(0)); + case SYS_READ: + check_err(env, read(ARG(0), (void *)ARG(1), ARG(2))); + break; + case SYS_WRITE: + check_err(env, write(ARG(0), (void *)ARG(1), ARG(2))); + break; + case SYS_OPEN: + check_err(env, open((char *)ARG(0), translate_openflags(ARG(1)), + ARG(2))); + break; + case SYS_CLOSE: + { + /* Ignore attempts to close stdin/out/err. */ + int fd = ARG(0); + if (fd > 2) + check_err(env, close(fd)); + else + check_err(env, 0); + break; + } + case SYS_BRK: + { + int32_t ret; + + ret = do_brk((void *)ARG(0)); + if (ret == -ENOMEM) + ret = -1; + check_err(env, ret); + } + break; + case SYS_FSTAT: + { + struct stat s; + int rc; + struct m86k_sim_stat *p; + rc = check_err(env, fstat(ARG(0), &s)); + if (rc == 0) { + p = (struct m86k_sim_stat *)ARG(1); + p->sim_st_dev = tswap16(s.st_dev); + p->sim_st_ino = tswap16(s.st_ino); + p->sim_st_mode = tswap32(s.st_mode); + p->sim_st_nlink = tswap16(s.st_nlink); + p->sim_st_uid = tswap16(s.st_uid); + p->sim_st_gid = tswap16(s.st_gid); + p->sim_st_rdev = tswap16(s.st_rdev); + p->sim_st_size = tswap32(s.st_size); + p->sim_st_atime = tswap32(s.st_atime); + p->sim_st_mtime = tswap32(s.st_mtime); + p->sim_st_ctime = tswap32(s.st_ctime); + p->sim_st_blksize = tswap32(s.st_blksize); + p->sim_st_blocks = tswap32(s.st_blocks); + } + } + break; + case SYS_ISATTY: + check_err(env, isatty(ARG(0))); + break; + case SYS_LSEEK: + check_err(env, lseek(ARG(0), (int32_t)ARG(1), ARG(2))); + break; + default: + cpu_abort(env, "Unsupported m68k sim syscall %d\n", nr); + } +} diff --git a/linux-user/m68k/syscall.h b/linux-user/m68k/syscall.h new file mode 100644 index 0000000000..c225567d2a --- /dev/null +++ b/linux-user/m68k/syscall.h @@ -0,0 +1,22 @@ + +/* this struct defines the way the registers are stored on the + stack during a system call. */ + +struct target_pt_regs { + target_long d1, d2, d3, d4, d5, d6, d7; + target_long a0, a1, a2, a3, a4, a5, a6; + target_ulong d0; + target_ulong usp; + target_ulong orig_d0; + int16_t stkadj; + uint16_t sr; + target_ulong pc; + uint16_t fntvex; + uint16_t __fill; +}; + + +#define UNAME_MACHINE "m68k" + +void do_m68k_semihosting(CPUState *, int); +void do_m68k_simcall(CPUState *, int); diff --git a/linux-user/m68k/syscall_nr.h b/linux-user/m68k/syscall_nr.h new file mode 100644 index 0000000000..a39535f5f3 --- /dev/null +++ b/linux-user/m68k/syscall_nr.h @@ -0,0 +1,283 @@ +/* + * This file contains the system call numbers. + */ + +#define TARGET_NR_exit 1 +#define TARGET_NR_fork 2 +#define TARGET_NR_read 3 +#define TARGET_NR_write 4 +#define TARGET_NR_open 5 +#define TARGET_NR_close 6 +#define TARGET_NR_waitpid 7 +#define TARGET_NR_creat 8 +#define TARGET_NR_link 9 +#define TARGET_NR_unlink 10 +#define TARGET_NR_execve 11 +#define TARGET_NR_chdir 12 +#define TARGET_NR_time 13 +#define TARGET_NR_mknod 14 +#define TARGET_NR_chmod 15 +#define TARGET_NR_chown 16 +#define TARGET_NR_break 17 +#define TARGET_NR_oldstat 18 +#define TARGET_NR_lseek 19 +#define TARGET_NR_getpid 20 +#define TARGET_NR_mount 21 +#define TARGET_NR_umount 22 +#define TARGET_NR_setuid 23 +#define TARGET_NR_getuid 24 +#define TARGET_NR_stime 25 +#define TARGET_NR_ptrace 26 +#define TARGET_NR_alarm 27 +#define TARGET_NR_oldfstat 28 +#define TARGET_NR_pause 29 +#define TARGET_NR_utime 30 +#define TARGET_NR_stty 31 +#define TARGET_NR_gtty 32 +#define TARGET_NR_access 33 +#define TARGET_NR_nice 34 +#define TARGET_NR_ftime 35 +#define TARGET_NR_sync 36 +#define TARGET_NR_kill 37 +#define TARGET_NR_rename 38 +#define TARGET_NR_mkdir 39 +#define TARGET_NR_rmdir 40 +#define TARGET_NR_dup 41 +#define TARGET_NR_pipe 42 +#define TARGET_NR_times 43 +#define TARGET_NR_prof 44 +#define TARGET_NR_brk 45 +#define TARGET_NR_setgid 46 +#define TARGET_NR_getgid 47 +#define TARGET_NR_signal 48 +#define TARGET_NR_geteuid 49 +#define TARGET_NR_getegid 50 +#define TARGET_NR_acct 51 +#define TARGET_NR_umount2 52 +#define TARGET_NR_lock 53 +#define TARGET_NR_ioctl 54 +#define TARGET_NR_fcntl 55 +#define TARGET_NR_mpx 56 +#define TARGET_NR_setpgid 57 +#define TARGET_NR_ulimit 58 +#define TARGET_NR_oldolduname 59 +#define TARGET_NR_umask 60 +#define TARGET_NR_chroot 61 +#define TARGET_NR_ustat 62 +#define TARGET_NR_dup2 63 +#define TARGET_NR_getppid 64 +#define TARGET_NR_getpgrp 65 +#define TARGET_NR_setsid 66 +#define TARGET_NR_sigaction 67 +#define TARGET_NR_sgetmask 68 +#define TARGET_NR_ssetmask 69 +#define TARGET_NR_setreuid 70 +#define TARGET_NR_setregid 71 +#define TARGET_NR_sigsuspend 72 +#define TARGET_NR_sigpending 73 +#define TARGET_NR_sethostname 74 +#define TARGET_NR_setrlimit 75 +#define TARGET_NR_getrlimit 76 +#define TARGET_NR_getrusage 77 +#define TARGET_NR_gettimeofday 78 +#define TARGET_NR_settimeofday 79 +#define TARGET_NR_getgroups 80 +#define TARGET_NR_setgroups 81 +#define TARGET_NR_select 82 +#define TARGET_NR_symlink 83 +#define TARGET_NR_oldlstat 84 +#define TARGET_NR_readlink 85 +#define TARGET_NR_uselib 86 +#define TARGET_NR_swapon 87 +#define TARGET_NR_reboot 88 +#define TARGET_NR_readdir 89 +#define TARGET_NR_mmap 90 +#define TARGET_NR_munmap 91 +#define TARGET_NR_truncate 92 +#define TARGET_NR_ftruncate 93 +#define TARGET_NR_fchmod 94 +#define TARGET_NR_fchown 95 +#define TARGET_NR_getpriority 96 +#define TARGET_NR_setpriority 97 +#define TARGET_NR_profil 98 +#define TARGET_NR_statfs 99 +#define TARGET_NR_fstatfs 100 +#define TARGET_NR_ioperm 101 +#define TARGET_NR_socketcall 102 +#define TARGET_NR_syslog 103 +#define TARGET_NR_setitimer 104 +#define TARGET_NR_getitimer 105 +#define TARGET_NR_stat 106 +#define TARGET_NR_lstat 107 +#define TARGET_NR_fstat 108 +#define TARGET_NR_olduname 109 +//#define TARGET_NR_iopl /* 110 */ not supported +#define TARGET_NR_vhangup 111 +//#define TARGET_NR_idle /* 112 */ Obsolete +//#define TARGET_NR_vm86 /* 113 */ not supported +#define TARGET_NR_wait4 114 +#define TARGET_NR_swapoff 115 +#define TARGET_NR_sysinfo 116 +#define TARGET_NR_ipc 117 +#define TARGET_NR_fsync 118 +#define TARGET_NR_sigreturn 119 +#define TARGET_NR_clone 120 +#define TARGET_NR_setdomainname 121 +#define TARGET_NR_uname 122 +#define TARGET_NR_cacheflush 123 +#define TARGET_NR_adjtimex 124 +#define TARGET_NR_mprotect 125 +#define TARGET_NR_sigprocmask 126 +#define TARGET_NR_create_module 127 +#define TARGET_NR_init_module 128 +#define TARGET_NR_delete_module 129 +#define TARGET_NR_get_kernel_syms 130 +#define TARGET_NR_quotactl 131 +#define TARGET_NR_getpgid 132 +#define TARGET_NR_fchdir 133 +#define TARGET_NR_bdflush 134 +#define TARGET_NR_sysfs 135 +#define TARGET_NR_personality 136 +#define TARGET_NR_afs_syscall 137 /* Syscall for Andrew File System */ +#define TARGET_NR_setfsuid 138 +#define TARGET_NR_setfsgid 139 +#define TARGET_NR__llseek 140 +#define TARGET_NR_getdents 141 +#define TARGET_NR__newselect 142 +#define TARGET_NR_flock 143 +#define TARGET_NR_msync 144 +#define TARGET_NR_readv 145 +#define TARGET_NR_writev 146 +#define TARGET_NR_getsid 147 +#define TARGET_NR_fdatasync 148 +#define TARGET_NR__sysctl 149 +#define TARGET_NR_mlock 150 +#define TARGET_NR_munlock 151 +#define TARGET_NR_mlockall 152 +#define TARGET_NR_munlockall 153 +#define TARGET_NR_sched_setparam 154 +#define TARGET_NR_sched_getparam 155 +#define TARGET_NR_sched_setscheduler 156 +#define TARGET_NR_sched_getscheduler 157 +#define TARGET_NR_sched_yield 158 +#define TARGET_NR_sched_get_priority_max 159 +#define TARGET_NR_sched_get_priority_min 160 +#define TARGET_NR_sched_rr_get_interval 161 +#define TARGET_NR_nanosleep 162 +#define TARGET_NR_mremap 163 +#define TARGET_NR_setresuid 164 +#define TARGET_NR_getresuid 165 +#define TARGET_NR_getpagesize 166 +#define TARGET_NR_query_module 167 +#define TARGET_NR_poll 168 +#define TARGET_NR_nfsservctl 169 +#define TARGET_NR_setresgid 170 +#define TARGET_NR_getresgid 171 +#define TARGET_NR_prctl 172 +#define TARGET_NR_rt_sigreturn 173 +#define TARGET_NR_rt_sigaction 174 +#define TARGET_NR_rt_sigprocmask 175 +#define TARGET_NR_rt_sigpending 176 +#define TARGET_NR_rt_sigtimedwait 177 +#define TARGET_NR_rt_sigqueueinfo 178 +#define TARGET_NR_rt_sigsuspend 179 +#define TARGET_NR_pread64 180 +#define TARGET_NR_pwrite64 181 +#define TARGET_NR_lchown 182 +#define TARGET_NR_getcwd 183 +#define TARGET_NR_capget 184 +#define TARGET_NR_capset 185 +#define TARGET_NR_sigaltstack 186 +#define TARGET_NR_sendfile 187 +#define TARGET_NR_getpmsg 188 /* some people actually want streams */ +#define TARGET_NR_putpmsg 189 /* some people actually want streams */ +#define TARGET_NR_vfork 190 +#define TARGET_NR_ugetrlimit 191 +#define TARGET_NR_mmap2 192 +#define TARGET_NR_truncate64 193 +#define TARGET_NR_ftruncate64 194 +#define TARGET_NR_stat64 195 +#define TARGET_NR_lstat64 196 +#define TARGET_NR_fstat64 197 +#define TARGET_NR_chown32 198 +#define TARGET_NR_getuid32 199 +#define TARGET_NR_getgid32 200 +#define TARGET_NR_geteuid32 201 +#define TARGET_NR_getegid32 202 +#define TARGET_NR_setreuid32 203 +#define TARGET_NR_setregid32 204 +#define TARGET_NR_getgroups32 205 +#define TARGET_NR_setgroups32 206 +#define TARGET_NR_fchown32 207 +#define TARGET_NR_setresuid32 208 +#define TARGET_NR_getresuid32 209 +#define TARGET_NR_setresgid32 210 +#define TARGET_NR_getresgid32 211 +#define TARGET_NR_lchown32 212 +#define TARGET_NR_setuid32 213 +#define TARGET_NR_setgid32 214 +#define TARGET_NR_setfsuid32 215 +#define TARGET_NR_setfsgid32 216 +#define TARGET_NR_pivot_root 217 +#define TARGET_NR_getdents64 220 +#define TARGET_NR_gettid 221 +#define TARGET_NR_tkill 222 +#define TARGET_NR_setxattr 223 +#define TARGET_NR_lsetxattr 224 +#define TARGET_NR_fsetxattr 225 +#define TARGET_NR_getxattr 226 +#define TARGET_NR_lgetxattr 227 +#define TARGET_NR_fgetxattr 228 +#define TARGET_NR_listxattr 229 +#define TARGET_NR_llistxattr 230 +#define TARGET_NR_flistxattr 231 +#define TARGET_NR_removexattr 232 +#define TARGET_NR_lremovexattr 233 +#define TARGET_NR_fremovexattr 234 +#define TARGET_NR_futex 235 +#define TARGET_NR_sendfile64 236 +#define TARGET_NR_mincore 237 +#define TARGET_NR_madvise 238 +#define TARGET_NR_fcntl64 239 +#define TARGET_NR_readahead 240 +#define TARGET_NR_io_setup 241 +#define TARGET_NR_io_destroy 242 +#define TARGET_NR_io_getevents 243 +#define TARGET_NR_io_submit 244 +#define TARGET_NR_io_cancel 245 +#define TARGET_NR_fadvise64 246 +#define TARGET_NR_exit_group 247 +#define TARGET_NR_lookup_dcookie 248 +#define TARGET_NR_epoll_create 249 +#define TARGET_NR_epoll_ctl 250 +#define TARGET_NR_epoll_wait 251 +#define TARGET_NR_remap_file_pages 252 +#define TARGET_NR_set_tid_address 253 +#define TARGET_NR_timer_create 254 +#define TARGET_NR_timer_settime 255 +#define TARGET_NR_timer_gettime 256 +#define TARGET_NR_timer_getoverrun 257 +#define TARGET_NR_timer_delete 258 +#define TARGET_NR_clock_settime 259 +#define TARGET_NR_clock_gettime 260 +#define TARGET_NR_clock_getres 261 +#define TARGET_NR_clock_nanosleep 262 +#define TARGET_NR_statfs64 263 +#define TARGET_NR_fstatfs64 264 +#define TARGET_NR_tgkill 265 +#define TARGET_NR_utimes 266 +#define TARGET_NR_fadvise64_64 267 +#define TARGET_NR_mbind 268 +#define TARGET_NR_get_mempolicy 269 +#define TARGET_NR_set_mempolicy 270 +#define TARGET_NR_mq_open 271 +#define TARGET_NR_mq_unlink 272 +#define TARGET_NR_mq_timedsend 273 +#define TARGET_NR_mq_timedreceive 274 +#define TARGET_NR_mq_notify 275 +#define TARGET_NR_mq_getsetattr 276 +#define TARGET_NR_waitid 277 +#define TARGET_NR_vserver 278 +#define TARGET_NR_add_key 279 +#define TARGET_NR_request_key 280 +#define TARGET_NR_keyctl 281 diff --git a/linux-user/m68k/termbits.h b/linux-user/m68k/termbits.h new file mode 100644 index 0000000000..36ead08957 --- /dev/null +++ b/linux-user/m68k/termbits.h @@ -0,0 +1,215 @@ +/* from asm/termbits.h */ +/* NOTE: exactly the same as i386 */ + +#define TARGET_NCCS 19 + +struct target_termios { + unsigned int c_iflag; /* input mode flags */ + unsigned int c_oflag; /* output mode flags */ + unsigned int c_cflag; /* control mode flags */ + unsigned int c_lflag; /* local mode flags */ + unsigned char c_line; /* line discipline */ + unsigned char c_cc[TARGET_NCCS]; /* control characters */ +}; + +/* c_iflag bits */ +#define TARGET_IGNBRK 0000001 +#define TARGET_BRKINT 0000002 +#define TARGET_IGNPAR 0000004 +#define TARGET_PARMRK 0000010 +#define TARGET_INPCK 0000020 +#define TARGET_ISTRIP 0000040 +#define TARGET_INLCR 0000100 +#define TARGET_IGNCR 0000200 +#define TARGET_ICRNL 0000400 +#define TARGET_IUCLC 0001000 +#define TARGET_IXON 0002000 +#define TARGET_IXANY 0004000 +#define TARGET_IXOFF 0010000 +#define TARGET_IMAXBEL 0020000 + +/* c_oflag bits */ +#define TARGET_OPOST 0000001 +#define TARGET_OLCUC 0000002 +#define TARGET_ONLCR 0000004 +#define TARGET_OCRNL 0000010 +#define TARGET_ONOCR 0000020 +#define TARGET_ONLRET 0000040 +#define TARGET_OFILL 0000100 +#define TARGET_OFDEL 0000200 +#define TARGET_NLDLY 0000400 +#define TARGET_NL0 0000000 +#define TARGET_NL1 0000400 +#define TARGET_CRDLY 0003000 +#define TARGET_CR0 0000000 +#define TARGET_CR1 0001000 +#define TARGET_CR2 0002000 +#define TARGET_CR3 0003000 +#define TARGET_TABDLY 0014000 +#define TARGET_TAB0 0000000 +#define TARGET_TAB1 0004000 +#define TARGET_TAB2 0010000 +#define TARGET_TAB3 0014000 +#define TARGET_XTABS 0014000 +#define TARGET_BSDLY 0020000 +#define TARGET_BS0 0000000 +#define TARGET_BS1 0020000 +#define TARGET_VTDLY 0040000 +#define TARGET_VT0 0000000 +#define TARGET_VT1 0040000 +#define TARGET_FFDLY 0100000 +#define TARGET_FF0 0000000 +#define TARGET_FF1 0100000 + +/* c_cflag bit meaning */ +#define TARGET_CBAUD 0010017 +#define TARGET_B0 0000000 /* hang up */ +#define TARGET_B50 0000001 +#define TARGET_B75 0000002 +#define TARGET_B110 0000003 +#define TARGET_B134 0000004 +#define TARGET_B150 0000005 +#define TARGET_B200 0000006 +#define TARGET_B300 0000007 +#define TARGET_B600 0000010 +#define TARGET_B1200 0000011 +#define TARGET_B1800 0000012 +#define TARGET_B2400 0000013 +#define TARGET_B4800 0000014 +#define TARGET_B9600 0000015 +#define TARGET_B19200 0000016 +#define TARGET_B38400 0000017 +#define TARGET_EXTA B19200 +#define TARGET_EXTB B38400 +#define TARGET_CSIZE 0000060 +#define TARGET_CS5 0000000 +#define TARGET_CS6 0000020 +#define TARGET_CS7 0000040 +#define TARGET_CS8 0000060 +#define TARGET_CSTOPB 0000100 +#define TARGET_CREAD 0000200 +#define TARGET_PARENB 0000400 +#define TARGET_PARODD 0001000 +#define TARGET_HUPCL 0002000 +#define TARGET_CLOCAL 0004000 +#define TARGET_CBAUDEX 0010000 +#define TARGET_B57600 0010001 +#define TARGET_B115200 0010002 +#define TARGET_B230400 0010003 +#define TARGET_B460800 0010004 +#define TARGET_CIBAUD 002003600000 /* input baud rate (not used) */ +#define TARGET_CRTSCTS 020000000000 /* flow control */ + +/* c_lflag bits */ +#define TARGET_ISIG 0000001 +#define TARGET_ICANON 0000002 +#define TARGET_XCASE 0000004 +#define TARGET_ECHO 0000010 +#define TARGET_ECHOE 0000020 +#define TARGET_ECHOK 0000040 +#define TARGET_ECHONL 0000100 +#define TARGET_NOFLSH 0000200 +#define TARGET_TOSTOP 0000400 +#define TARGET_ECHOCTL 0001000 +#define TARGET_ECHOPRT 0002000 +#define TARGET_ECHOKE 0004000 +#define TARGET_FLUSHO 0010000 +#define TARGET_PENDIN 0040000 +#define TARGET_IEXTEN 0100000 + +/* c_cc character offsets */ +#define TARGET_VINTR 0 +#define TARGET_VQUIT 1 +#define TARGET_VERASE 2 +#define TARGET_VKILL 3 +#define TARGET_VEOF 4 +#define TARGET_VTIME 5 +#define TARGET_VMIN 6 +#define TARGET_VSWTC 7 +#define TARGET_VSTART 8 +#define TARGET_VSTOP 9 +#define TARGET_VSUSP 10 +#define TARGET_VEOL 11 +#define TARGET_VREPRINT 12 +#define TARGET_VDISCARD 13 +#define TARGET_VWERASE 14 +#define TARGET_VLNEXT 15 +#define TARGET_VEOL2 16 + +/* ioctls */ + +#define TARGET_TCGETS 0x5401 +#define TARGET_TCSETS 0x5402 +#define TARGET_TCSETSW 0x5403 +#define TARGET_TCSETSF 0x5404 +#define TARGET_TCGETA 0x5405 +#define TARGET_TCSETA 0x5406 +#define TARGET_TCSETAW 0x5407 +#define TARGET_TCSETAF 0x5408 +#define TARGET_TCSBRK 0x5409 +#define TARGET_TCXONC 0x540A +#define TARGET_TCFLSH 0x540B + +#define TARGET_TIOCEXCL 0x540C +#define TARGET_TIOCNXCL 0x540D +#define TARGET_TIOCSCTTY 0x540E +#define TARGET_TIOCGPGRP 0x540F +#define TARGET_TIOCSPGRP 0x5410 +#define TARGET_TIOCOUTQ 0x5411 +#define TARGET_TIOCSTI 0x5412 +#define TARGET_TIOCGWINSZ 0x5413 +#define TARGET_TIOCSWINSZ 0x5414 +#define TARGET_TIOCMGET 0x5415 +#define TARGET_TIOCMBIS 0x5416 +#define TARGET_TIOCMBIC 0x5417 +#define TARGET_TIOCMSET 0x5418 +#define TARGET_TIOCGSOFTCAR 0x5419 +#define TARGET_TIOCSSOFTCAR 0x541A +#define TARGET_FIONREAD 0x541B +#define TARGET_TIOCINQ TARGET_FIONREAD +#define TARGET_TIOCLINUX 0x541C +#define TARGET_TIOCCONS 0x541D +#define TARGET_TIOCGSERIAL 0x541E +#define TARGET_TIOCSSERIAL 0x541F +#define TARGET_TIOCPKT 0x5420 +#define TARGET_FIONBIO 0x5421 +#define TARGET_TIOCNOTTY 0x5422 +#define TARGET_TIOCSETD 0x5423 +#define TARGET_TIOCGETD 0x5424 +#define TARGET_TCSBRKP 0x5425 /* Needed for POSIX tcsendbreak() */ +#define TARGET_TIOCTTYGSTRUCT 0x5426 /* For debugging only */ +#define TARGET_TIOCSBRK 0x5427 /* BSD compatibility */ +#define TARGET_TIOCCBRK 0x5428 /* BSD compatibility */ +#define TARGET_TIOCGSID 0x5429 /* Return the session ID of FD */ +#define TARGET_TIOCGPTN TARGET_IOR('T',0x30, unsigned int) /* Get Pty Number (of pty-mux device) */ +#define TARGET_TIOCSPTLCK TARGET_IOW('T',0x31, int) /* Lock/unlock Pty */ + +#define TARGET_FIONCLEX 0x5450 /* these numbers need to be adjusted. */ +#define TARGET_FIOCLEX 0x5451 +#define TARGET_FIOASYNC 0x5452 +#define TARGET_TIOCSERCONFIG 0x5453 +#define TARGET_TIOCSERGWILD 0x5454 +#define TARGET_TIOCSERSWILD 0x5455 +#define TARGET_TIOCGLCKTRMIOS 0x5456 +#define TARGET_TIOCSLCKTRMIOS 0x5457 +#define TARGET_TIOCSERGSTRUCT 0x5458 /* For debugging only */ +#define TARGET_TIOCSERGETLSR 0x5459 /* Get line status register */ +#define TARGET_TIOCSERGETMULTI 0x545A /* Get multiport config */ +#define TARGET_TIOCSERSETMULTI 0x545B /* Set multiport config */ + +#define TARGET_TIOCMIWAIT 0x545C /* wait for a change on serial input line(s) */ +#define TARGET_TIOCGICOUNT 0x545D /* read serial port inline interrupt counts */ +#define TARGET_TIOCGHAYESESP 0x545E /* Get Hayes ESP configuration */ +#define TARGET_TIOCSHAYESESP 0x545F /* Set Hayes ESP configuration */ + +/* Used for packet mode */ +#define TARGET_TIOCPKT_DATA 0 +#define TARGET_TIOCPKT_FLUSHREAD 1 +#define TARGET_TIOCPKT_FLUSHWRITE 2 +#define TARGET_TIOCPKT_STOP 4 +#define TARGET_TIOCPKT_START 8 +#define TARGET_TIOCPKT_NOSTOP 16 +#define TARGET_TIOCPKT_DOSTOP 32 + +#define TARGET_TIOCSER_TEMT 0x01 /* Transmitter physically empty */ + diff --git a/linux-user/main.c b/linux-user/main.c index 42f4a03506..53bf1bb92e 100644 --- a/linux-user/main.c +++ b/linux-user/main.c @@ -1412,6 +1412,98 @@ void cpu_loop (CPUState *env) } #endif +#ifdef TARGET_M68K + +void cpu_loop(CPUM68KState *env) +{ + int trapnr; + unsigned int n; + target_siginfo_t info; + TaskState *ts = env->opaque; + + for(;;) { + trapnr = cpu_m68k_exec(env); + switch(trapnr) { + case EXCP_ILLEGAL: + { + if (ts->sim_syscalls) { + uint16_t nr; + nr = lduw(env->pc + 2); + env->pc += 4; + do_m68k_simcall(env, nr); + } else { + goto do_sigill; + } + } + break; + case EXCP_HALTED: + /* Semihosing syscall. */ + env->pc += 2; + do_m68k_semihosting(env, env->dregs[0]); + break; + case EXCP_LINEA: + case EXCP_LINEF: + case EXCP_UNSUPPORTED: + do_sigill: + info.si_signo = SIGILL; + info.si_errno = 0; + info.si_code = TARGET_ILL_ILLOPN; + info._sifields._sigfault._addr = env->pc; + queue_signal(info.si_signo, &info); + break; + case EXCP_TRAP0: + { + ts->sim_syscalls = 0; + n = env->dregs[0]; + env->pc += 2; + env->dregs[0] = do_syscall(env, + n, + env->dregs[1], + env->dregs[2], + env->dregs[3], + env->dregs[4], + env->dregs[5], + env->dregs[6]); + } + break; + case EXCP_INTERRUPT: + /* just indicate that signals should be handled asap */ + break; + case EXCP_ACCESS: + { + info.si_signo = SIGSEGV; + info.si_errno = 0; + /* XXX: check env->error_code */ + info.si_code = TARGET_SEGV_MAPERR; + info._sifields._sigfault._addr = env->mmu.ar; + queue_signal(info.si_signo, &info); + } + break; + case EXCP_DEBUG: + { + int sig; + + sig = gdb_handlesig (env, TARGET_SIGTRAP); + if (sig) + { + info.si_signo = sig; + info.si_errno = 0; + info.si_code = TARGET_TRAP_BRKPT; + queue_signal(info.si_signo, &info); + } + } + break; + default: + fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n", + trapnr); + cpu_dump_state(env, stderr, fprintf, 0); + abort(); + } + process_pending_signals(env); + } +} +#endif /* TARGET_M68K */ + void usage(void) { printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003-2005 Fabrice Bellard\n" @@ -1685,6 +1777,35 @@ int main(int argc, char **argv) env->gpr[i] = regs->gpr[i]; } } +#elif defined(TARGET_M68K) + { + m68k_def_t *def; + def = m68k_find_by_name("cfv4e"); + if (def == NULL) { + cpu_abort(cpu_single_env, + "Unable to find m68k CPU definition\n"); + } + cpu_m68k_register(cpu_single_env, def); + env->pc = regs->pc; + env->dregs[0] = regs->d0; + env->dregs[1] = regs->d1; + env->dregs[2] = regs->d2; + env->dregs[3] = regs->d3; + env->dregs[4] = regs->d4; + env->dregs[5] = regs->d5; + env->dregs[6] = regs->d6; + env->dregs[7] = regs->d7; + env->aregs[0] = regs->a0; + env->aregs[1] = regs->a1; + env->aregs[2] = regs->a2; + env->aregs[3] = regs->a3; + env->aregs[4] = regs->a4; + env->aregs[5] = regs->a5; + env->aregs[6] = regs->a6; + env->aregs[7] = regs->usp; + env->sr = regs->sr; + ts->sim_syscalls = 1; + } #elif defined(TARGET_MIPS) { int i; diff --git a/linux-user/mmap.c b/linux-user/mmap.c index 0c906257b1..cbaa7ce2c0 100644 --- a/linux-user/mmap.c +++ b/linux-user/mmap.c @@ -209,7 +209,7 @@ long target_mmap(target_ulong start, target_ulong len, int prot, last_start += HOST_PAGE_ALIGN(len); } #endif - if (qemu_host_page_size != qemu_real_host_page_size) { + if (0 && qemu_host_page_size != qemu_real_host_page_size) { /* NOTE: this code is only for debugging with '-p' option */ /* ??? Can also occur when TARGET_PAGE_SIZE > host page size. */ /* reserve a memory area */ diff --git a/linux-user/qemu.h b/linux-user/qemu.h index 218e846a0a..d35455de33 100644 --- a/linux-user/qemu.h +++ b/linux-user/qemu.h @@ -73,6 +73,9 @@ typedef struct TaskState { struct target_vm86plus_struct vm86plus; uint32_t v86flags; uint32_t v86mask; +#endif +#ifdef TARGET_M68K + int sim_syscalls; #endif int used; /* non zero if used */ struct image_info *info; diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 60ed9a6078..e5e4139fd3 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -69,7 +69,8 @@ //#define DEBUG -#if defined(TARGET_I386) || defined(TARGET_ARM) || defined(TARGET_SPARC) +#if defined(TARGET_I386) || defined(TARGET_ARM) || defined(TARGET_SPARC) \ + || defined(TARGET_M68K) /* 16 bit uid wrappers emulation */ #define USE_UID16 #endif @@ -1645,6 +1646,12 @@ int do_fork(CPUState *env, unsigned int flags, unsigned long newsp) new_env->regwptr[0] = 0; /* XXXXX */ printf ("HELPME: %s:%d\n", __FILE__, __LINE__); +#elif defined(TARGET_M68K) + if (!newsp) + newsp = env->aregs[7]; + new_env->aregs[7] = newsp; + new_env->dregs[0] = 0; + /* ??? is this sufficient? */ #elif defined(TARGET_MIPS) printf ("HELPME: %s:%d\n", __FILE__, __LINE__); #elif defined(TARGET_PPC) @@ -2604,7 +2611,7 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3, case TARGET_NR_readdir: goto unimplemented; case TARGET_NR_mmap: -#if defined(TARGET_I386) || defined(TARGET_ARM) +#if defined(TARGET_I386) || defined(TARGET_ARM) || defined(TARGET_M68K) { target_ulong *v; target_ulong v1, v2, v3, v4, v5, v6; diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h index 015f3ba248..e33c12bebe 100644 --- a/linux-user/syscall_defs.h +++ b/linux-user/syscall_defs.h @@ -48,7 +48,8 @@ #define TARGET_IOC_NRBITS 8 #define TARGET_IOC_TYPEBITS 8 -#if defined(TARGET_I386) || defined(TARGET_ARM) || defined(TARGET_SH4) +#if defined(TARGET_I386) || defined(TARGET_ARM) || defined(TARGET_SH4) \ + || defined(TARGET_M68K) #define TARGET_IOC_SIZEBITS 14 #define TARGET_IOC_DIRBITS 2 @@ -293,7 +294,7 @@ struct target_sigaction; int do_sigaction(int sig, const struct target_sigaction *act, struct target_sigaction *oact); -#if defined(TARGET_I386) || defined(TARGET_ARM) || defined(TARGET_SPARC) || defined(TARGET_PPC) || defined(TARGET_MIPS) || defined (TARGET_SH4) +#if defined(TARGET_I386) || defined(TARGET_ARM) || defined(TARGET_SPARC) || defined(TARGET_PPC) || defined(TARGET_MIPS) || defined (TARGET_SH4) || defined(TARGET_M68K) #if defined(TARGET_SPARC) #define TARGET_SA_NOCLDSTOP 8u @@ -1070,6 +1071,68 @@ struct target_stat64 { target_ulong __unused5; }; +#elif defined(TARGET_M68K) + +struct target_stat { + unsigned short st_dev; + unsigned short __pad1; + target_ulong st_ino; + unsigned short st_mode; + unsigned short st_nlink; + unsigned short st_uid; + unsigned short st_gid; + unsigned short st_rdev; + unsigned short __pad2; + target_ulong st_size; + target_ulong st_blksize; + target_ulong st_blocks; + target_ulong target_st_atime; + target_ulong __unused1; + target_ulong target_st_mtime; + target_ulong __unused2; + target_ulong target_st_ctime; + target_ulong __unused3; + target_ulong __unused4; + target_ulong __unused5; +}; + +/* This matches struct stat64 in glibc2.1, hence the absolutely + * insane amounts of padding around dev_t's. + */ +struct target_stat64 { + unsigned long long st_dev; + unsigned char __pad1[2]; + +#define TARGET_STAT64_HAS_BROKEN_ST_INO 1 + target_ulong __st_ino; + + unsigned int st_mode; + unsigned int st_nlink; + + target_ulong st_uid; + target_ulong st_gid; + + unsigned long long st_rdev; + unsigned char __pad3[2]; + + long long st_size; + target_ulong st_blksize; + + target_ulong __pad4; /* future possible st_blocks high bits */ + target_ulong st_blocks; /* Number 512-byte blocks allocated. */ + + target_ulong target_st_atime; + target_ulong target_st_atime_nsec; + + target_ulong target_st_mtime; + target_ulong target_st_mtime_nsec; + + target_ulong target_st_ctime; + target_ulong target_st_ctime_nsec; + + unsigned long long st_ino; +} __attribute__((packed)); + #elif defined(TARGET_MIPS) struct target_stat { diff --git a/qemu-doc.texi b/qemu-doc.texi index 4634a220a1..c7fbe1d1dd 100644 --- a/qemu-doc.texi +++ b/qemu-doc.texi @@ -81,7 +81,7 @@ For system emulation, the following hardware targets are supported: @item ARM Versatile baseboard (ARM926E) @end itemize -For user emulation, x86, PowerPC, ARM, MIPS, and Sparc32/64 CPUs are supported. +For user emulation, x86, PowerPC, ARM, MIPS, Sparc32/64 and ColdFire(m68k) CPUs are supported. @node Installation @chapter Installation @@ -1768,6 +1768,10 @@ Act as if the host page size was 'pagesize' bytes binaries (as implemented by the arm-elf and arm-eabi Newlib/GDB configurations), and arm-uclinux bFLT format binaries. +@command{qemu-m68k} is capable of running semihosted binaries using the BDM +(m5xxx-ram-hosted.ld) or m68k-sim (sim.ld) syscall interfaces, and +coldfire uClinux bFLT format binaries. + The binary format is detected automatically. @node compilation diff --git a/target-m68k/cpu.h b/target-m68k/cpu.h new file mode 100644 index 0000000000..29e02e8bb2 --- /dev/null +++ b/target-m68k/cpu.h @@ -0,0 +1,140 @@ +/* + * m68k virtual CPU header + * + * Copyright (c) 2005-2006 CodeSourcery + * Written by Paul Brook + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#ifndef CPU_M68K_H +#define CPU_M68K_H + +#define TARGET_LONG_BITS 32 + +#include "cpu-defs.h" + +#include "softfloat.h" + +#define MAX_QREGS 32 + +#define TARGET_HAS_ICE 1 + +#define EXCP_ACCESS 2 /* Access (MMU) error. */ +#define EXCP_ADDRESS 3 /* Address error. */ +#define EXCP_ILLEGAL 4 /* Illegal instruction. */ +#define EXCP_DIV0 5 /* Divide by zero */ +#define EXCP_PRIVILEGE 8 /* Privilege violation. */ +#define EXCP_TRACE 9 +#define EXCP_LINEA 10 /* Unimplemented line-A (MAC) opcode. */ +#define EXCP_LINEF 11 /* Unimplemented line-F (FPU) opcode. */ +#define EXCP_DEBUGNBP 12 /* Non-breakpoint debug interrupt. */ +#define EXCP_DEBEGBP 13 /* Breakpoint debug interrupt. */ +#define EXCP_FORMAT 14 /* RTE format error. */ +#define EXCP_UNINITIALIZED 15 +#define EXCP_TRAP0 32 /* User trap #0. */ +#define EXCP_TRAP15 47 /* User trap #15. */ +#define EXCP_UNSUPPORTED 61 +#define EXCP_ICE 13 + +typedef struct CPUM68KState { + uint32_t dregs[8]; + uint32_t aregs[8]; + uint32_t pc; + uint32_t sr; + + /* Condition flags. */ + uint32_t cc_op; + uint32_t cc_dest; + uint32_t cc_src; + uint32_t cc_x; + + float64 fregs[8]; + float64 fp_result; + uint32_t fpcr; + uint32_t fpsr; + float_status fp_status; + + /* Temporary storage for DIV helpers. */ + uint32_t div1; + uint32_t div2; + + /* MMU status. */ + struct { + uint32_t ar; + } mmu; + /* ??? remove this. */ + uint32_t t1; + + /* exception/interrupt handling */ + jmp_buf jmp_env; + int exception_index; + int interrupt_request; + int user_mode_only; + uint32_t address; + + uint32_t qregs[MAX_QREGS]; + + CPU_COMMON +} CPUM68KState; + +CPUM68KState *cpu_m68k_init(void); +int cpu_m68k_exec(CPUM68KState *s); +void cpu_m68k_close(CPUM68KState *s); +/* you can call this signal handler from your SIGBUS and SIGSEGV + signal handlers to inform the virtual CPU of exceptions. non zero + is returned if the signal was handled by the virtual CPU. */ +struct siginfo; +int cpu_m68k_signal_handler(int host_signum, struct siginfo *info, + void *puc); +void cpu_m68k_flush_flags(CPUM68KState *, int); + +enum { + CC_OP_DYNAMIC, /* Use env->cc_op */ + CC_OP_FLAGS, /* CC_DEST = CVZN, CC_SRC = unused */ + CC_OP_LOGIC, /* CC_DEST = result, CC_SRC = unused */ + CC_OP_ADD, /* CC_DEST = result, CC_SRC = source */ + CC_OP_SUB, /* CC_DEST = result, CC_SRC = source */ + CC_OP_CMPB, /* CC_DEST = result, CC_SRC = source */ + CC_OP_CMPW, /* CC_DEST = result, CC_SRC = source */ + CC_OP_ADDX, /* CC_DEST = result, CC_SRC = source */ + CC_OP_SUBX, /* CC_DEST = result, CC_SRC = source */ + CC_OP_SHL, /* CC_DEST = source, CC_SRC = shift */ + CC_OP_SHR, /* CC_DEST = source, CC_SRC = shift */ + CC_OP_SAR, /* CC_DEST = source, CC_SRC = shift */ +}; + +#define CCF_C 0x01 +#define CCF_V 0x02 +#define CCF_Z 0x04 +#define CCF_N 0x08 +#define CCF_X 0x01 + +typedef struct m68k_def_t m68k_def_t; + +m68k_def_t *m68k_find_by_name(const char *); +void cpu_m68k_register(CPUM68KState *, m68k_def_t *); + +#define M68K_FPCR_PREC (1 << 6) + +#ifdef CONFIG_USER_ONLY +/* Linux uses 8k pages. */ +#define TARGET_PAGE_BITS 13 +#else +/* Smallest TLB entry size is 1k. */ +#define TARGET_PAGE_BITS 10 +#endif +#include "cpu-all.h" + +#endif diff --git a/target-m68k/exec.h b/target-m68k/exec.h new file mode 100644 index 0000000000..ef4adeb391 --- /dev/null +++ b/target-m68k/exec.h @@ -0,0 +1,47 @@ +/* + * m68k execution defines + * + * Copyright (c) 2005-2006 CodeSourcery + * Written by Paul Brook + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#include "dyngen-exec.h" + +register struct CPUM68KState *env asm(AREG0); +/* This is only used for tb lookup. */ +register uint32_t T0 asm(AREG1); +/* ??? We don't use T1, but common code expects it to exist */ +#define T1 env->t1 + +#include "cpu.h" +#include "exec-all.h" + +static inline void env_to_regs(void) +{ +} + +static inline void regs_to_env(void) +{ +} + +int cpu_m68k_handle_mmu_fault (CPUState *env, target_ulong address, int rw, + int is_user, int is_softmmu); + + +void cpu_m68k_flush_flags(CPUM68KState *env, int cc_op); +float64 helper_sub_cmpf64(CPUM68KState *env, float64 src0, float64 src1); + +void cpu_loop_exit(void); diff --git a/target-m68k/helper.c b/target-m68k/helper.c new file mode 100644 index 0000000000..6b8f18d15d --- /dev/null +++ b/target-m68k/helper.c @@ -0,0 +1,149 @@ +/* + * m68k op helpers + * + * Copyright (c) 2006 CodeSourcery + * Written by Paul Brook + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include + +#include "config.h" +#include "cpu.h" +#include "exec-all.h" + +void cpu_m68k_flush_flags(CPUM68KState *env, int cc_op) +{ + int flags; + uint32_t src; + uint32_t dest; + uint32_t tmp; + +#define HIGHBIT 0x80000000u + +#define SET_NZ(x) do { \ + if ((x) == 0) \ + flags |= CCF_Z; \ + else if ((int32_t)(x) < 0) \ + flags |= CCF_N; \ + } while (0) + +#define SET_FLAGS_SUB(type, utype) do { \ + SET_NZ((type)dest); \ + tmp = dest + src; \ + if ((utype) tmp < (utype) src) \ + flags |= CCF_C; \ + if ((1u << (sizeof(type) * 8 - 1)) & (tmp ^ dest) & (tmp ^ src)) \ + flags |= CCF_V; \ + } while (0) + + flags = 0; + src = env->cc_src; + dest = env->cc_dest; + switch (cc_op) { + case CC_OP_FLAGS: + flags = dest; + break; + case CC_OP_LOGIC: + SET_NZ(dest); + break; + case CC_OP_ADD: + SET_NZ(dest); + if (dest < src) + flags |= CCF_C; + tmp = dest - src; + if (HIGHBIT & (src ^ dest) & ~(tmp ^ src)) + flags |= CCF_V; + break; + case CC_OP_SUB: + SET_FLAGS_SUB(int32_t, uint32_t); + break; + case CC_OP_CMPB: + SET_FLAGS_SUB(int8_t, uint8_t); + break; + case CC_OP_CMPW: + SET_FLAGS_SUB(int16_t, uint16_t); + break; + case CC_OP_ADDX: + SET_NZ(dest); + if (dest <= src) + flags |= CCF_C; + tmp = dest - src - 1; + if (HIGHBIT & (src ^ dest) & ~(tmp ^ src)) + flags |= CCF_V; + break; + case CC_OP_SUBX: + SET_NZ(dest); + tmp = dest + src + 1; + if (tmp <= src) + flags |= CCF_C; + if (HIGHBIT & (tmp ^ dest) & (tmp ^ src)) + flags |= CCF_V; + break; + case CC_OP_SHL: + if (src >= 32) { + SET_NZ(0); + } else { + tmp = dest << src; + SET_NZ(tmp); + } + if (src && src <= 32 && (dest & (1 << (32 - src)))) + flags |= CCF_C; + break; + case CC_OP_SHR: + if (src >= 32) { + SET_NZ(0); + } else { + tmp = dest >> src; + SET_NZ(tmp); + } + if (src && src <= 32 && ((dest >> (src - 1)) & 1)) + flags |= CCF_C; + break; + case CC_OP_SAR: + if (src >= 32) { + SET_NZ(-1); + } else { + tmp = (int32_t)dest >> src; + SET_NZ(tmp); + } + if (src && src <= 32 && (((int32_t)dest >> (src - 1)) & 1)) + flags |= CCF_C; + break; + default: + cpu_abort(env, "Bad CC_OP %d", cc_op); + } + env->cc_op = CC_OP_FLAGS; + env->cc_dest = flags; +} + +float64 helper_sub_cmpf64(CPUM68KState *env, float64 src0, float64 src1) +{ + /* ??? This may incorrectly raise exceptions. */ + /* ??? Should flush denormals to zero. */ + float64 res; + res = float64_sub(src0, src1, &env->fp_status); + if (float64_is_nan(res)) { + /* +/-inf compares equal against itself, but sub returns nan. */ + if (!float64_is_nan(src0) + && !float64_is_nan(src1)) { + res = 0; + if (float64_lt_quiet(src0, res, &env->fp_status)) + res = float64_chs(res); + } + } + return res; +} diff --git a/target-m68k/m68k-qreg.h b/target-m68k/m68k-qreg.h new file mode 100644 index 0000000000..34bcb02ecc --- /dev/null +++ b/target-m68k/m68k-qreg.h @@ -0,0 +1,12 @@ +enum { +#define DEFO32(name, offset) QREG_##name, +#define DEFR(name, reg, mode) QREG_##name, +#define DEFF64(name, offset) QREG_##name, + QREG_NULL, +#include "qregs.def" + TARGET_NUM_QREGS = 0x100 +#undef DEFO32 +#undef DEFR +#undef DEFF64 +}; + diff --git a/target-m68k/op-hacks.h b/target-m68k/op-hacks.h new file mode 100644 index 0000000000..c7865638ee --- /dev/null +++ b/target-m68k/op-hacks.h @@ -0,0 +1,83 @@ +/* Various hacks to make code written for a dynamic code generator work + with regular QEMU. */ + +static int free_qreg; + +#define QMODE_I32 1 +#define QMODE_F32 1 +#define QMODE_F64 2 + +static inline int gen_new_qreg(int mode) +{ + int qreg; + + qreg = free_qreg; + free_qreg += mode; + if (free_qreg > MAX_QREGS) { + fprintf(stderr, "qreg overflow\n"); + abort(); + } + return qreg + TARGET_NUM_QREGS; +} + +static inline int gen_im32(uint32_t i) +{ + int qreg = gen_new_qreg(QMODE_I32); + gen_op_mov32_im(qreg, i); + return qreg; +} + +static inline void gen_op_ldf32(int dest, int addr) +{ + gen_op_ld32(dest, addr); +} + +static inline void gen_op_stf32(int addr, int dest) +{ + gen_op_st32(addr, dest); +} + +static inline void gen_op_pack_32_f32(int dest, int src) +{ + gen_op_mov32(dest, src); +} + +static inline void gen_op_pack_f32_32(int dest, int src) +{ + gen_op_mov32(dest, src); +} + +static inline void gen_op_flags_set(void) +{ + /* Dummy op. */ +} + +static inline void gen_op_shl_im_cc(int val, int shift) +{ + gen_op_shl_cc(val, gen_im32(shift)); +} + +static inline void gen_op_shr_im_cc(int val, int shift) +{ + gen_op_shr_cc(val, gen_im32(shift)); +} + +static inline void gen_op_sar_im_cc(int val, int shift) +{ + gen_op_sar_cc(val, gen_im32(shift)); +} + +#ifdef USE_DIRECT_JUMP +#define TBPARAM(x) +#else +#define TBPARAM(x) (long)(x) +#endif + +static inline void gen_op_goto_tb(int dummy, int n, long tb) +{ + if (n == 0) { + gen_op_goto_tb0(TBPARAM(tb)); + } else { + gen_op_goto_tb1(TBPARAM(tb)); + } +} diff --git a/target-m68k/op.c b/target-m68k/op.c new file mode 100644 index 0000000000..489eafeef6 --- /dev/null +++ b/target-m68k/op.c @@ -0,0 +1,678 @@ +/* + * m68k micro operations + * + * Copyright (c) 2006 CodeSourcery + * Written by Paul Brook + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include "exec.h" +#include "m68k-qreg.h" + +#ifndef offsetof +#define offsetof(type, field) ((size_t) &((type *)0)->field) +#endif + +static long qreg_offsets[] = { +#define DEFO32(name, offset) offsetof(CPUState, offset), +#define DEFR(name, reg, mode) -1, +#define DEFF64(name, offset) offsetof(CPUState, offset), + 0, +#include "qregs.def" +}; + +#define CPU_FP_STATUS env->fp_status + +#define RAISE_EXCEPTION(n) do { \ + env->exception_index = n; \ + cpu_loop_exit(); \ + } while(0) + +#define get_op helper_get_op +#define set_op helper_set_op +#define get_opf64 helper_get_opf64 +#define set_opf64 helper_set_opf64 +uint32_t +get_op(int qreg) +{ + if (qreg == QREG_T0) { + return T0; + } else if (qreg < TARGET_NUM_QREGS) { + return *(uint32_t *)(((long)env) + qreg_offsets[qreg]); + } else { + return env->qregs[qreg - TARGET_NUM_QREGS]; + } +} + +void set_op(int qreg, uint32_t val) +{ + if (qreg == QREG_T0) { + T0 = val; + } else if (qreg < TARGET_NUM_QREGS) { + *(uint32_t *)(((long)env) + qreg_offsets[qreg]) = val; + } else { + env->qregs[qreg - TARGET_NUM_QREGS] = val; + } +} + +float64 get_opf64(int qreg) +{ + if (qreg < TARGET_NUM_QREGS) { + return *(float64 *)(((long)env) + qreg_offsets[qreg]); + } else { + return *(float64 *)&env->qregs[qreg - TARGET_NUM_QREGS]; + } +} + +void set_opf64(int qreg, float64 val) +{ + if (qreg < TARGET_NUM_QREGS) { + *(float64 *)(((long)env) + qreg_offsets[qreg]) = val; + } else { + *(float64 *)&env->qregs[qreg - TARGET_NUM_QREGS] = val; + } +} + +#define OP(name) void OPPROTO op_##name (void) + +OP(mov32) +{ + set_op(PARAM1, get_op(PARAM2)); + FORCE_RET(); +} + +OP(mov32_im) +{ + set_op(PARAM1, PARAM2); + FORCE_RET(); +} + +OP(movf64) +{ + set_opf64(PARAM1, get_opf64(PARAM2)); + FORCE_RET(); +} + +OP(zerof64) +{ + set_opf64(PARAM1, 0); + FORCE_RET(); +} + +OP(add32) +{ + uint32_t op2 = get_op(PARAM2); + uint32_t op3 = get_op(PARAM3); + set_op(PARAM1, op2 + op3); + FORCE_RET(); +} + +OP(sub32) +{ + uint32_t op2 = get_op(PARAM2); + uint32_t op3 = get_op(PARAM3); + set_op(PARAM1, op2 - op3); + FORCE_RET(); +} + +OP(mul32) +{ + uint32_t op2 = get_op(PARAM2); + uint32_t op3 = get_op(PARAM3); + set_op(PARAM1, op2 * op3); + FORCE_RET(); +} + +OP(not32) +{ + uint32_t arg = get_op(PARAM2); + set_op(PARAM1, ~arg); + FORCE_RET(); +} + +OP(neg32) +{ + uint32_t arg = get_op(PARAM2); + set_op(PARAM1, -arg); + FORCE_RET(); +} + +OP(bswap32) +{ + uint32_t arg = get_op(PARAM2); + arg = (arg >> 24) | (arg << 24) + | ((arg >> 16) & 0xff00) | ((arg << 16) & 0xff0000); + set_op(PARAM1, arg); + FORCE_RET(); +} + +OP(btest) +{ + uint32_t op1 = get_op(PARAM1); + uint32_t op2 = get_op(PARAM2); + if (op1 & op2) + env->cc_dest &= ~CCF_Z; + else + env->cc_dest |= CCF_Z; + FORCE_RET(); +} + +OP(addx_cc) +{ + uint32_t op1 = get_op(PARAM1); + uint32_t op2 = get_op(PARAM2); + uint32_t res; + if (env->cc_x) { + env->cc_x = (op1 <= op2); + env->cc_op = CC_OP_SUBX; + res = op1 - (op2 + 1); + } else { + env->cc_x = (op1 < op2); + env->cc_op = CC_OP_SUB; + res = op1 - op2; + } + set_op(PARAM1, res); + FORCE_RET(); +} + +OP(subx_cc) +{ + uint32_t op1 = get_op(PARAM1); + uint32_t op2 = get_op(PARAM2); + uint32_t res; + if (env->cc_x) { + res = op1 + op2 + 1; + env->cc_x = (res <= op2); + env->cc_op = CC_OP_ADDX; + } else { + res = op1 + op2; + env->cc_x = (res < op2); + env->cc_op = CC_OP_ADD; + } + set_op(PARAM1, res); + FORCE_RET(); +} + +/* Logic ops. */ + +OP(and32) +{ + uint32_t op2 = get_op(PARAM2); + uint32_t op3 = get_op(PARAM3); + set_op(PARAM1, op2 & op3); + FORCE_RET(); +} + +OP(or32) +{ + uint32_t op2 = get_op(PARAM2); + uint32_t op3 = get_op(PARAM3); + set_op(PARAM1, op2 | op3); + FORCE_RET(); +} + +OP(xor32) +{ + uint32_t op2 = get_op(PARAM2); + uint32_t op3 = get_op(PARAM3); + set_op(PARAM1, op2 ^ op3); + FORCE_RET(); +} + +/* Shifts. */ +OP(shl32) +{ + uint32_t op2 = get_op(PARAM2); + uint32_t op3 = get_op(PARAM3); + uint32_t result; + result = op2 << op3; + set_op(PARAM1, result); + FORCE_RET(); +} + +OP(shl_cc) +{ + uint32_t op1 = get_op(PARAM1); + uint32_t op2 = get_op(PARAM2); + uint32_t result; + result = op1 << op2; + set_op(PARAM1, result); + env->cc_x = (op1 << (op2 - 1)) & 1; + FORCE_RET(); +} + +OP(shr32) +{ + uint32_t op2 = get_op(PARAM2); + uint32_t op3 = get_op(PARAM3); + uint32_t result; + result = op2 >> op3; + set_op(PARAM1, result); + FORCE_RET(); +} + +OP(shr_cc) +{ + uint32_t op1 = get_op(PARAM1); + uint32_t op2 = get_op(PARAM2); + uint32_t result; + result = op1 >> op2; + set_op(PARAM1, result); + env->cc_x = (op1 >> (op2 - 1)) & 1; + FORCE_RET(); +} + +OP(sar_cc) +{ + int32_t op1 = get_op(PARAM1); + uint32_t op2 = get_op(PARAM2); + uint32_t result; + result = op1 >> op2; + set_op(PARAM1, result); + env->cc_x = (op1 >> (op2 - 1)) & 1; + FORCE_RET(); +} + +/* Value extend. */ + +OP(ext8u32) +{ + uint32_t op2 = get_op(PARAM2); + set_op(PARAM1, (uint8_t)op2); + FORCE_RET(); +} + +OP(ext8s32) +{ + uint32_t op2 = get_op(PARAM2); + set_op(PARAM1, (int8_t)op2); + FORCE_RET(); +} + +OP(ext16u32) +{ + uint32_t op2 = get_op(PARAM2); + set_op(PARAM1, (uint16_t)op2); + FORCE_RET(); +} + +OP(ext16s32) +{ + uint32_t op2 = get_op(PARAM2); + set_op(PARAM1, (int16_t)op2); + FORCE_RET(); +} + +/* Load/store ops. */ +OP(ld8u32) +{ + uint32_t addr = get_op(PARAM2); + set_op(PARAM1, ldub(addr)); + FORCE_RET(); +} + +OP(ld8s32) +{ + uint32_t addr = get_op(PARAM2); + set_op(PARAM1, ldsb(addr)); + FORCE_RET(); +} + +OP(ld16u32) +{ + uint32_t addr = get_op(PARAM2); + set_op(PARAM1, lduw(addr)); + FORCE_RET(); +} + +OP(ld16s32) +{ + uint32_t addr = get_op(PARAM2); + set_op(PARAM1, ldsw(addr)); + FORCE_RET(); +} + +OP(ld32) +{ + uint32_t addr = get_op(PARAM2); + set_op(PARAM1, ldl(addr)); + FORCE_RET(); +} + +OP(st8) +{ + uint32_t addr = get_op(PARAM1); + stb(addr, get_op(PARAM2)); + FORCE_RET(); +} + +OP(st16) +{ + uint32_t addr = get_op(PARAM1); + stw(addr, get_op(PARAM2)); + FORCE_RET(); +} + +OP(st32) +{ + uint32_t addr = get_op(PARAM1); + stl(addr, get_op(PARAM2)); + FORCE_RET(); +} + +OP(ldf64) +{ + uint32_t addr = get_op(PARAM2); + set_opf64(PARAM1, ldfq(addr)); + FORCE_RET(); +} + +OP(stf64) +{ + uint32_t addr = get_op(PARAM1); + stfq(addr, get_opf64(PARAM2)); + FORCE_RET(); +} + +OP(flush_flags) +{ + int cc_op = PARAM1; + if (cc_op == CC_OP_DYNAMIC) + cc_op = env->cc_op; + cpu_m68k_flush_flags(env, cc_op); + FORCE_RET(); +} + +OP(divu) +{ + uint32_t num; + uint32_t den; + uint32_t quot; + uint32_t rem; + uint32_t flags; + + num = env->div1; + den = env->div2; + /* ??? This needs to make sure the throwing location is accurate. */ + if (den == 0) + RAISE_EXCEPTION(EXCP_DIV0); + quot = num / den; + rem = num % den; + flags = 0; + if (PARAM1 && quot > 0xffff) + flags |= CCF_V; + if (quot == 0) + flags |= CCF_Z; + else if ((int32_t)quot < 0) + flags |= CCF_N; + env->div1 = quot; + env->div2 = rem; + env->cc_dest = flags; + FORCE_RET(); +} + +OP(divs) +{ + int32_t num; + int32_t den; + int32_t quot; + int32_t rem; + int32_t flags; + + num = env->div1; + den = env->div2; + if (den == 0) + RAISE_EXCEPTION(EXCP_DIV0); + quot = num / den; + rem = num % den; + flags = 0; + if (PARAM1 && quot != (int16_t)quot) + flags |= CCF_V; + if (quot == 0) + flags |= CCF_Z; + else if (quot < 0) + flags |= CCF_N; + env->div1 = quot; + env->div2 = rem; + env->cc_dest = flags; + FORCE_RET(); +} + +OP(raise_exception) +{ + RAISE_EXCEPTION(PARAM1); + FORCE_RET(); +} + +/* Floating point comparison sets flags differently to other instructions. */ + +OP(sub_cmpf64) +{ + float64 src0; + float64 src1; + src0 = get_opf64(PARAM2); + src1 = get_opf64(PARAM3); + set_opf64(PARAM1, helper_sub_cmpf64(env, src0, src1)); + FORCE_RET(); +} + +OP(update_xflag_tst) +{ + uint32_t op1 = get_op(PARAM1); + env->cc_x = op1; + FORCE_RET(); +} + +OP(update_xflag_lt) +{ + uint32_t op1 = get_op(PARAM1); + uint32_t op2 = get_op(PARAM2); + env->cc_x = (op1 < op2); + FORCE_RET(); +} + +OP(get_xflag) +{ + set_op(PARAM1, env->cc_x); + FORCE_RET(); +} + +OP(logic_cc) +{ + uint32_t op1 = get_op(PARAM1); + env->cc_dest = op1; + FORCE_RET(); +} + +OP(update_cc_add) +{ + uint32_t op1 = get_op(PARAM1); + uint32_t op2 = get_op(PARAM2); + env->cc_dest = op1; + env->cc_src = op2; + FORCE_RET(); +} + +OP(fp_result) +{ + env->fp_result = get_opf64(PARAM1); + FORCE_RET(); +} + +OP(jmp) +{ + GOTO_LABEL_PARAM(1); +} + +/* These ops involve a function call, which probably requires a stack frame + and breaks things on some hosts. */ +OP(jmp_z32) +{ + uint32_t arg = get_op(PARAM1); + if (arg == 0) + GOTO_LABEL_PARAM(2); + FORCE_RET(); +} + +OP(jmp_nz32) +{ + uint32_t arg = get_op(PARAM1); + if (arg != 0) + GOTO_LABEL_PARAM(2); + FORCE_RET(); +} + +OP(jmp_s32) +{ + int32_t arg = get_op(PARAM1); + if (arg < 0) + GOTO_LABEL_PARAM(2); + FORCE_RET(); +} + +OP(jmp_ns32) +{ + int32_t arg = get_op(PARAM1); + if (arg >= 0) + GOTO_LABEL_PARAM(2); + FORCE_RET(); +} + +void OPPROTO op_goto_tb0(void) +{ + GOTO_TB(op_goto_tb0, PARAM1, 0); +} + +void OPPROTO op_goto_tb1(void) +{ + GOTO_TB(op_goto_tb1, PARAM1, 1); +} + +OP(exit_tb) +{ + EXIT_TB(); +} + + +/* Floating point. */ +OP(f64_to_i32) +{ + set_op(PARAM1, float64_to_int32(get_opf64(PARAM2), &CPU_FP_STATUS)); + FORCE_RET(); +} + +OP(f64_to_f32) +{ + union { + float32 f; + uint32_t i; + } u; + u.f = float64_to_float32(get_opf64(PARAM2), &CPU_FP_STATUS); + set_op(PARAM1, u.i); + FORCE_RET(); +} + +OP(i32_to_f64) +{ + set_opf64(PARAM1, int32_to_float64(get_op(PARAM2), &CPU_FP_STATUS)); + FORCE_RET(); +} + +OP(f32_to_f64) +{ + union { + float32 f; + uint32_t i; + } u; + u.i = get_op(PARAM2); + set_opf64(PARAM1, float32_to_float64(u.f, &CPU_FP_STATUS)); + FORCE_RET(); +} + +OP(absf64) +{ + float64 op0 = get_opf64(PARAM2); + set_opf64(PARAM1, float64_abs(op0)); + FORCE_RET(); +} + +OP(chsf64) +{ + float64 op0 = get_opf64(PARAM2); + set_opf64(PARAM1, float64_chs(op0)); + FORCE_RET(); +} + +OP(sqrtf64) +{ + float64 op0 = get_opf64(PARAM2); + set_opf64(PARAM1, float64_sqrt(op0, &CPU_FP_STATUS)); + FORCE_RET(); +} + +OP(addf64) +{ + float64 op0 = get_opf64(PARAM2); + float64 op1 = get_opf64(PARAM3); + set_opf64(PARAM1, float64_add(op0, op1, &CPU_FP_STATUS)); + FORCE_RET(); +} + +OP(subf64) +{ + float64 op0 = get_opf64(PARAM2); + float64 op1 = get_opf64(PARAM3); + set_opf64(PARAM1, float64_sub(op0, op1, &CPU_FP_STATUS)); + FORCE_RET(); +} + +OP(mulf64) +{ + float64 op0 = get_opf64(PARAM2); + float64 op1 = get_opf64(PARAM3); + set_opf64(PARAM1, float64_mul(op0, op1, &CPU_FP_STATUS)); + FORCE_RET(); +} + +OP(divf64) +{ + float64 op0 = get_opf64(PARAM2); + float64 op1 = get_opf64(PARAM3); + set_opf64(PARAM1, float64_div(op0, op1, &CPU_FP_STATUS)); + FORCE_RET(); +} + +OP(iround_f64) +{ + float64 op0 = get_opf64(PARAM2); + set_opf64(PARAM1, float64_round_to_int(op0, &CPU_FP_STATUS)); + FORCE_RET(); +} + +OP(itrunc_f64) +{ + float64 op0 = get_opf64(PARAM2); + set_opf64(PARAM1, float64_trunc_to_int(op0, &CPU_FP_STATUS)); + FORCE_RET(); +} + +OP(compare_quietf64) +{ + float64 op0 = get_opf64(PARAM2); + float64 op1 = get_opf64(PARAM3); + set_op(PARAM1, float64_compare_quiet(op0, op1, &CPU_FP_STATUS)); + FORCE_RET(); +} diff --git a/target-m68k/qregs.def b/target-m68k/qregs.def new file mode 100644 index 0000000000..d8c1944082 --- /dev/null +++ b/target-m68k/qregs.def @@ -0,0 +1,34 @@ +DEFO32(D0, dregs[0]) +DEFO32(D1, dregs[1]) +DEFO32(D2, dregs[2]) +DEFO32(D3, dregs[3]) +DEFO32(D4, dregs[4]) +DEFO32(D5, dregs[5]) +DEFO32(D6, dregs[6]) +DEFO32(D7, dregs[7]) +DEFO32(A0, aregs[0]) +DEFO32(A1, aregs[1]) +DEFO32(A2, aregs[2]) +DEFO32(A3, aregs[3]) +DEFO32(A4, aregs[4]) +DEFO32(A5, aregs[5]) +DEFO32(A6, aregs[6]) +DEFO32(SP, aregs[7]) /* A7 */ +DEFF64(F0, fregs[0]) +DEFF64(F1, fregs[1]) +DEFF64(F2, fregs[2]) +DEFF64(F3, fregs[3]) +DEFF64(F4, fregs[4]) +DEFF64(F5, fregs[5]) +DEFF64(F6, fregs[6]) +DEFF64(F7, fregs[7]) +DEFF64(FP_RESULT, fp_result) +DEFO32(PC, pc) +DEFO32(CC_OP, cc_op) +DEFR(T0, AREG1, QMODE_I32) +DEFO32(CC_DEST, cc_dest) +DEFO32(CC_SRC, cc_src) +DEFO32(CC_X, cc_x) +DEFO32(DIV1, div1) +DEFO32(DIV2, div2) +DEFO32(EXCEPTION, exception_index) diff --git a/target-m68k/translate.c b/target-m68k/translate.c new file mode 100644 index 0000000000..10728f97d3 --- /dev/null +++ b/target-m68k/translate.c @@ -0,0 +1,2759 @@ +/* + * m68k translation + * + * Copyright (c) 2005-2006 CodeSourcery + * Written by Paul Brook + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#include +#include +#include +#include +#include + +#include "config.h" +#include "cpu.h" +#include "exec-all.h" +#include "disas.h" +#include "m68k-qreg.h" + +static inline void qemu_assert(int cond, const char *msg) +{ + if (!cond) { + fprintf (stderr, "badness: %s\n", msg); + abort(); + } +} + +/* internal defines */ +typedef struct DisasContext { + target_ulong pc; + int is_jmp; + int cc_op; + uint32_t fpcr; + struct TranslationBlock *tb; + int singlestep_enabled; +} DisasContext; + +#define DISAS_JUMP_NEXT 4 + +/* XXX: move that elsewhere */ +/* ??? Fix exceptions. */ +static void *gen_throws_exception; +#define gen_last_qop NULL + +static uint16_t *gen_opc_ptr; +static uint32_t *gen_opparam_ptr; +extern FILE *logfile; +extern int loglevel; + +enum { +#define DEF(s, n, copy_size) INDEX_op_ ## s, +#include "opc.h" +#undef DEF + NB_OPS, +}; + +#include "gen-op.h" +#include "op-hacks.h" + +#define OS_BYTE 0 +#define OS_WORD 1 +#define OS_LONG 2 +#define OS_SINGLE 4 +#define OS_DOUBLE 5 + +#define DREG(insn, pos) (((insn >> pos) & 7) + QREG_D0) +#define AREG(insn, pos) (((insn >> pos) & 7) + QREG_A0) +#define FREG(insn, pos) (((insn >> pos) & 7) + QREG_F0) + +#define M68K_INSN_CF_A (1 << 0) +#define M68K_INSN_CF_B (1 << 1) +#define M68K_INSN_CF_C (1 << 2) +#define M68K_INSN_CF_MAC (1 << 3) +#define M68K_INSN_CF_EMAC (1 << 4) +#define M68K_INSN_CF_FPU (1 << 5) + +struct m68k_def_t { + const char * name; + uint32_t insns; +}; + +static m68k_def_t m68k_cpu_defs[] = { + {"m5206", M68K_INSN_CF_A}, + {"cfv4e", M68K_INSN_CF_A | M68K_INSN_CF_B | M68K_INSN_CF_C + | M68K_INSN_CF_MAC | M68K_INSN_CF_EMAC | M68K_INSN_CF_FPU}, + {NULL, 0}, +}; + +typedef void (*disas_proc)(DisasContext *, uint16_t); + +#define DISAS_INSN(name) \ + static void disas_##name (DisasContext *s, uint16_t insn) + +/* Generate a load from the specified address. Narrow values are + sign extended to full register width. */ +static inline int gen_load(int opsize, int addr, int sign) +{ + int tmp; + switch(opsize) { + case OS_BYTE: + tmp = gen_new_qreg(QMODE_I32); + if (sign) + gen_op_ld8s32(tmp, addr); + else + gen_op_ld8u32(tmp, addr); + break; + case OS_WORD: + tmp = gen_new_qreg(QMODE_I32); + if (sign) + gen_op_ld16s32(tmp, addr); + else + gen_op_ld16u32(tmp, addr); + break; + case OS_LONG: + tmp = gen_new_qreg(QMODE_I32); + gen_op_ld32(tmp, addr); + break; + case OS_SINGLE: + tmp = gen_new_qreg(QMODE_F32); + gen_op_ldf32(tmp, addr); + break; + case OS_DOUBLE: + tmp = gen_new_qreg(QMODE_F64); + gen_op_ldf64(tmp, addr); + break; + default: + qemu_assert(0, "bad load size"); + } + gen_throws_exception = gen_last_qop; + return tmp; +} + +/* Generate a store. */ +static inline void gen_store(int opsize, int addr, int val) +{ + switch(opsize) { + case OS_BYTE: + gen_op_st8(addr, val); + break; + case OS_WORD: + gen_op_st16(addr, val); + break; + case OS_LONG: + gen_op_st32(addr, val); + break; + case OS_SINGLE: + gen_op_stf32(addr, val); + break; + case OS_DOUBLE: + gen_op_stf64(addr, val); + break; + default: + qemu_assert(0, "bad store size"); + } + gen_throws_exception = gen_last_qop; +} + +/* Generate an unsigned load if VAL is 0 a signed load if val is -1, + otherwise generate a store. */ +static int gen_ldst(int opsize, int addr, int val) +{ + if (val > 0) { + gen_store(opsize, addr, val); + return 0; + } else { + return gen_load(opsize, addr, val != 0); + } +} + +/* Handle a base + index + displacement effective addresss. A base of + -1 means pc-relative. */ +static int gen_lea_indexed(DisasContext *s, int opsize, int base) +{ + int scale; + uint32_t offset; + uint16_t ext; + int add; + int tmp; + + offset = s->pc; + ext = lduw(s->pc); + s->pc += 2; + tmp = ((ext >> 12) & 7) + ((ext & 0x8000) ? QREG_A0 : QREG_D0); + /* ??? Check W/L bit. */ + scale = (ext >> 9) & 3; + if (scale == 0) { + add = tmp; + } else { + add = gen_new_qreg(QMODE_I32); + gen_op_shl32(add, tmp, gen_im32(scale)); + } + tmp = gen_new_qreg(QMODE_I32); + if (base != -1) { + gen_op_add32(tmp, base, gen_im32((int8_t)ext)); + gen_op_add32(tmp, tmp, add); + } else { + gen_op_add32(tmp, add, gen_im32(offset + (int8_t)ext)); + } + return tmp; +} + +/* Read a 32-bit immediate constant. */ +static inline uint32_t read_im32(DisasContext *s) +{ + uint32_t im; + im = ((uint32_t)lduw(s->pc)) << 16; + s->pc += 2; + im |= lduw(s->pc); + s->pc += 2; + return im; +} + + +/* Update the CPU env CC_OP state. */ +static inline void gen_flush_cc_op(DisasContext *s) +{ + if (s->cc_op != CC_OP_DYNAMIC) + gen_op_mov32(QREG_CC_OP, gen_im32(s->cc_op)); +} + +/* Evaluate all the CC flags. */ +static inline void gen_flush_flags(DisasContext *s) +{ + if (s->cc_op == CC_OP_FLAGS) + return; + gen_op_flush_flags(s->cc_op); + s->cc_op = CC_OP_FLAGS; +} + +static inline int opsize_bytes(int opsize) +{ + switch (opsize) { + case OS_BYTE: return 1; + case OS_WORD: return 2; + case OS_LONG: return 4; + case OS_SINGLE: return 4; + case OS_DOUBLE: return 8; + default: + qemu_assert(0, "bad operand size"); + } +} + +/* Assign value to a register. If the width is less than the register width + only the low part of the register is set. */ +static void gen_partset_reg(int opsize, int reg, int val) +{ + int tmp; + switch (opsize) { + case OS_BYTE: + gen_op_and32(reg, reg, gen_im32(0xffffff00)); + tmp = gen_new_qreg(QMODE_I32); + gen_op_and32(tmp, val, gen_im32(0xff)); + gen_op_or32(reg, reg, tmp); + break; + case OS_WORD: + gen_op_and32(reg, reg, gen_im32(0xffff0000)); + tmp = gen_new_qreg(QMODE_I32); + gen_op_and32(tmp, val, gen_im32(0xffff)); + gen_op_or32(reg, reg, tmp); + break; + case OS_LONG: + gen_op_mov32(reg, val); + break; + case OS_SINGLE: + gen_op_pack_32_f32(reg, val); + break; + default: + qemu_assert(0, "Bad operand size"); + break; + } +} + +/* Sign or zero extend a value. */ +static inline int gen_extend(int val, int opsize, int sign) +{ + int tmp; + + switch (opsize) { + case OS_BYTE: + tmp = gen_new_qreg(QMODE_I32); + if (sign) + gen_op_ext8s32(tmp, val); + else + gen_op_ext8u32(tmp, val); + break; + case OS_WORD: + tmp = gen_new_qreg(QMODE_I32); + if (sign) + gen_op_ext16s32(tmp, val); + else + gen_op_ext16u32(tmp, val); + break; + case OS_LONG: + tmp = val; + break; + case OS_SINGLE: + tmp = gen_new_qreg(QMODE_F32); + gen_op_pack_f32_32(tmp, val); + break; + default: + qemu_assert(0, "Bad operand size"); + } + return tmp; +} + +/* Generate code for an "effective address". Does not adjust the base + register for autoincrememnt addressing modes. */ +static int gen_lea(DisasContext *s, uint16_t insn, int opsize) +{ + int reg; + int tmp; + uint16_t ext; + uint32_t offset; + + reg = insn & 7; + switch ((insn >> 3) & 7) { + case 0: /* Data register direct. */ + case 1: /* Address register direct. */ + /* ??? generate bad addressing mode fault. */ + qemu_assert(0, "invalid addressing mode"); + case 2: /* Indirect register */ + case 3: /* Indirect postincrement. */ + reg += QREG_A0; + return reg; + case 4: /* Indirect predecrememnt. */ + reg += QREG_A0; + tmp = gen_new_qreg(QMODE_I32); + gen_op_sub32(tmp, reg, gen_im32(opsize_bytes(opsize))); + return tmp; + case 5: /* Indirect displacement. */ + reg += QREG_A0; + tmp = gen_new_qreg(QMODE_I32); + ext = lduw(s->pc); + s->pc += 2; + gen_op_add32(tmp, reg, gen_im32((int16_t)ext)); + return tmp; + case 6: /* Indirect index + displacement. */ + reg += QREG_A0; + return gen_lea_indexed(s, opsize, reg); + case 7: /* Other */ + switch (reg) { + case 0: /* Absolute short. */ + offset = ldsw(s->pc); + s->pc += 2; + return gen_im32(offset); + case 1: /* Absolute long. */ + offset = read_im32(s); + return gen_im32(offset); + case 2: /* pc displacement */ + tmp = gen_new_qreg(QMODE_I32); + offset = s->pc; + offset += ldsw(s->pc); + s->pc += 2; + return gen_im32(offset); + case 3: /* pc index+displacement. */ + return gen_lea_indexed(s, opsize, -1); + case 4: /* Immediate. */ + default: + /* ??? generate bad addressing mode fault. */ + qemu_assert(0, "invalid addressing mode"); + } + } + /* Should never happen. */ + return -1; +} + +/* Helper function for gen_ea. Reuse the computed address between the + for read/write operands. */ +static inline int gen_ea_once(DisasContext *s, uint16_t insn, int opsize, + int val, int *addrp) +{ + int tmp; + + if (addrp && val > 0) { + tmp = *addrp; + } else { + tmp = gen_lea(s, insn, opsize); + if (addrp) + *addrp = tmp; + } + return gen_ldst(opsize, tmp, val); +} + +/* Generate code to load/store a value ito/from an EA. If VAL > 0 this is + a write otherwise it is a read (0 == sign extend, -1 == zero extend). + ADDRP is non-null for readwrite operands. */ +static int gen_ea(DisasContext *s, uint16_t insn, int opsize, int val, + int *addrp) +{ + int reg; + int result; + uint32_t offset; + + reg = insn & 7; + switch ((insn >> 3) & 7) { + case 0: /* Data register direct. */ + reg += QREG_D0; + if (val > 0) { + gen_partset_reg(opsize, reg, val); + return 0; + } else { + return gen_extend(reg, opsize, val); + } + case 1: /* Address register direct. */ + reg += QREG_A0; + if (val > 0) { + gen_op_mov32(reg, val); + return 0; + } else { + return gen_extend(reg, opsize, val); + } + case 2: /* Indirect register */ + reg += QREG_A0; + return gen_ldst(opsize, reg, val); + case 3: /* Indirect postincrement. */ + reg += QREG_A0; + result = gen_ldst(opsize, reg, val); + /* ??? This is not exception safe. The instruction may still + fault after this point. */ + if (val > 0 || !addrp) + gen_op_add32(reg, reg, gen_im32(opsize_bytes(opsize))); + return result; + case 4: /* Indirect predecrememnt. */ + { + int tmp; + if (addrp && val > 0) { + tmp = *addrp; + } else { + tmp = gen_lea(s, insn, opsize); + if (addrp) + *addrp = tmp; + } + result = gen_ldst(opsize, tmp, val); + /* ??? This is not exception safe. The instruction may still + fault after this point. */ + if (val > 0 || !addrp) { + reg += QREG_A0; + gen_op_mov32(reg, tmp); + } + } + return result; + case 5: /* Indirect displacement. */ + case 6: /* Indirect index + displacement. */ + return gen_ea_once(s, insn, opsize, val, addrp); + case 7: /* Other */ + switch (reg) { + case 0: /* Absolute short. */ + case 1: /* Absolute long. */ + case 2: /* pc displacement */ + case 3: /* pc index+displacement. */ + return gen_ea_once(s, insn, opsize, val, addrp); + case 4: /* Immediate. */ + /* Sign extend values for consistency. */ + switch (opsize) { + case OS_BYTE: + if (val) + offset = ldsb(s->pc + 1); + else + offset = ldub(s->pc + 1); + s->pc += 2; + break; + case OS_WORD: + if (val) + offset = ldsw(s->pc); + else + offset = lduw(s->pc); + s->pc += 2; + break; + case OS_LONG: + offset = read_im32(s); + break; + default: + qemu_assert(0, "Bad immediate operand"); + } + return gen_im32(offset); + default: + qemu_assert(0, "invalid addressing mode"); + } + } + /* Should never happen. */ + return -1; +} + +static void gen_logic_cc(DisasContext *s, int val) +{ + gen_op_logic_cc(val); + s->cc_op = CC_OP_LOGIC; +} + +static void gen_jmpcc(DisasContext *s, int cond, int l1) +{ + int tmp; + + gen_flush_flags(s); + switch (cond) { + case 0: /* T */ + gen_op_jmp(l1); + break; + case 1: /* F */ + break; + case 2: /* HI (!C && !Z) */ + tmp = gen_new_qreg(QMODE_I32); + gen_op_and32(tmp, QREG_CC_DEST, gen_im32(CCF_C | CCF_Z)); + gen_op_jmp_z32(tmp, l1); + break; + case 3: /* LS (C || Z) */ + tmp = gen_new_qreg(QMODE_I32); + gen_op_and32(tmp, QREG_CC_DEST, gen_im32(CCF_C | CCF_Z)); + gen_op_jmp_nz32(tmp, l1); + break; + case 4: /* CC (!C) */ + tmp = gen_new_qreg(QMODE_I32); + gen_op_and32(tmp, QREG_CC_DEST, gen_im32(CCF_C)); + gen_op_jmp_z32(tmp, l1); + break; + case 5: /* CS (C) */ + tmp = gen_new_qreg(QMODE_I32); + gen_op_and32(tmp, QREG_CC_DEST, gen_im32(CCF_C)); + gen_op_jmp_nz32(tmp, l1); + break; + case 6: /* NE (!Z) */ + tmp = gen_new_qreg(QMODE_I32); + gen_op_and32(tmp, QREG_CC_DEST, gen_im32(CCF_Z)); + gen_op_jmp_z32(tmp, l1); + break; + case 7: /* EQ (Z) */ + tmp = gen_new_qreg(QMODE_I32); + gen_op_and32(tmp, QREG_CC_DEST, gen_im32(CCF_Z)); + gen_op_jmp_nz32(tmp, l1); + break; + case 8: /* VC (!V) */ + tmp = gen_new_qreg(QMODE_I32); + gen_op_and32(tmp, QREG_CC_DEST, gen_im32(CCF_V)); + gen_op_jmp_z32(tmp, l1); + break; + case 9: /* VS (V) */ + tmp = gen_new_qreg(QMODE_I32); + gen_op_and32(tmp, QREG_CC_DEST, gen_im32(CCF_V)); + gen_op_jmp_nz32(tmp, l1); + break; + case 10: /* PL (!N) */ + tmp = gen_new_qreg(QMODE_I32); + gen_op_and32(tmp, QREG_CC_DEST, gen_im32(CCF_N)); + gen_op_jmp_z32(tmp, l1); + break; + case 11: /* MI (N) */ + tmp = gen_new_qreg(QMODE_I32); + gen_op_and32(tmp, QREG_CC_DEST, gen_im32(CCF_N)); + gen_op_jmp_nz32(tmp, l1); + break; + case 12: /* GE (!(N ^ V)) */ + tmp = gen_new_qreg(QMODE_I32); + gen_op_shr32(tmp, QREG_CC_DEST, gen_im32(2)); + gen_op_xor32(tmp, tmp, QREG_CC_DEST); + gen_op_and32(tmp, tmp, gen_im32(CCF_V)); + gen_op_jmp_z32(tmp, l1); + break; + case 13: /* LT (N ^ V) */ + tmp = gen_new_qreg(QMODE_I32); + gen_op_shr32(tmp, QREG_CC_DEST, gen_im32(2)); + gen_op_xor32(tmp, tmp, QREG_CC_DEST); + gen_op_and32(tmp, tmp, gen_im32(CCF_V)); + gen_op_jmp_nz32(tmp, l1); + break; + case 14: /* GT (!(Z || (N ^ V))) */ + { + int l2; + l2 = gen_new_label(); + tmp = gen_new_qreg(QMODE_I32); + gen_op_and32(tmp, QREG_CC_DEST, gen_im32(CCF_Z)); + gen_op_jmp_nz32(tmp, l2); + tmp = gen_new_qreg(QMODE_I32); + gen_op_shr32(tmp, QREG_CC_DEST, gen_im32(2)); + gen_op_xor32(tmp, tmp, QREG_CC_DEST); + gen_op_and32(tmp, tmp, gen_im32(CCF_V)); + gen_op_jmp_nz32(tmp, l2); + gen_op_jmp(l1); + gen_set_label(l2); + } + break; + case 15: /* LE (Z || (N ^ V)) */ + tmp = gen_new_qreg(QMODE_I32); + gen_op_and32(tmp, QREG_CC_DEST, gen_im32(CCF_Z)); + gen_op_jmp_nz32(tmp, l1); + tmp = gen_new_qreg(QMODE_I32); + gen_op_shr32(tmp, QREG_CC_DEST, gen_im32(2)); + gen_op_xor32(tmp, tmp, QREG_CC_DEST); + gen_op_and32(tmp, tmp, gen_im32(CCF_V)); + gen_op_jmp_nz32(tmp, l1); + break; + default: + /* Should ever happen. */ + abort(); + } +} + +DISAS_INSN(scc) +{ + int l1; + int cond; + int reg; + + l1 = gen_new_label(); + cond = (insn >> 8) & 0xf; + reg = DREG(insn, 0); + gen_op_and32(reg, reg, gen_im32(0xffffff00)); + gen_jmpcc(s, cond ^ 1, l1); + gen_op_or32(reg, reg, gen_im32(0xff)); + gen_set_label(l1); +} + +/* Generate a jump to to the address in qreg DEST. */ +static void gen_jmp(DisasContext *s, int dest) +{ + gen_flush_cc_op(s); + gen_op_mov32(QREG_PC, dest); + s->is_jmp = DISAS_JUMP; +} + +static void gen_exception(DisasContext *s, uint32_t where, int nr) +{ + gen_flush_cc_op(s); + gen_jmp(s, gen_im32(where)); + gen_op_raise_exception(nr); +} + +/* Generate a jump to an immediate address. */ +static void gen_jmp_tb(DisasContext *s, int n, uint32_t dest) +{ + TranslationBlock *tb; + + tb = s->tb; + if (__builtin_expect (s->singlestep_enabled, 0)) { + gen_exception(s, dest, EXCP_DEBUG); + } else if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK) || + (s->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK)) { + gen_op_goto_tb(0, n, (long)tb); + gen_op_mov32(QREG_PC, gen_im32(dest)); + gen_op_mov32(QREG_T0, gen_im32((long)tb + n)); + gen_op_exit_tb(); + } else { + gen_jmp(s, gen_im32(dest)); + gen_op_mov32(QREG_T0, gen_im32(0)); + gen_op_exit_tb(); + } + s->is_jmp = DISAS_TB_JUMP; +} + +DISAS_INSN(undef_mac) +{ + gen_exception(s, s->pc - 2, EXCP_LINEA); +} + +DISAS_INSN(undef_fpu) +{ + gen_exception(s, s->pc - 2, EXCP_LINEF); +} + +DISAS_INSN(undef) +{ + gen_exception(s, s->pc - 2, EXCP_UNSUPPORTED); + cpu_abort(cpu_single_env, "Illegal instruction: %04x @ %08x", + insn, s->pc - 2); +} + +DISAS_INSN(mulw) +{ + int reg; + int tmp; + int src; + int sign; + + sign = (insn & 0x100) != 0; + reg = DREG(insn, 9); + tmp = gen_new_qreg(QMODE_I32); + if (sign) + gen_op_ext16s32(tmp, reg); + else + gen_op_ext16u32(tmp, reg); + src = gen_ea(s, insn, OS_WORD, sign ? -1 : 0, NULL); + gen_op_mul32(tmp, tmp, src); + gen_op_mov32(reg, tmp); + /* Unlike m68k, coldfire always clears the overflow bit. */ + gen_logic_cc(s, tmp); +} + +DISAS_INSN(divw) +{ + int reg; + int tmp; + int src; + int sign; + + sign = (insn & 0x100) != 0; + reg = DREG(insn, 9); + if (sign) { + gen_op_ext16s32(QREG_DIV1, reg); + } else { + gen_op_ext16u32(QREG_DIV1, reg); + } + src = gen_ea(s, insn, OS_WORD, sign ? -1 : 0, NULL); + gen_op_mov32(QREG_DIV2, src); + if (sign) { + gen_op_divs(1); + } else { + gen_op_divu(1); + } + + tmp = gen_new_qreg(QMODE_I32); + src = gen_new_qreg(QMODE_I32); + gen_op_ext16u32(tmp, QREG_DIV1); + gen_op_shl32(src, QREG_DIV2, gen_im32(16)); + gen_op_or32(reg, tmp, src); + gen_op_flags_set(); + s->cc_op = CC_OP_FLAGS; +} + +DISAS_INSN(divl) +{ + int num; + int den; + int reg; + uint16_t ext; + + ext = lduw(s->pc); + s->pc += 2; + if (ext & 0x87f8) { + gen_exception(s, s->pc - 4, EXCP_UNSUPPORTED); + return; + } + num = DREG(ext, 12); + reg = DREG(ext, 0); + gen_op_mov32(QREG_DIV1, num); + den = gen_ea(s, insn, OS_LONG, 0, NULL); + gen_op_mov32(QREG_DIV2, den); + if (ext & 0x0800) { + gen_op_divs(0); + } else { + gen_op_divu(0); + } + if (num == reg) { + /* div */ + gen_op_mov32 (reg, QREG_DIV1); + } else { + /* rem */ + gen_op_mov32 (reg, QREG_DIV2); + } + gen_op_flags_set(); + s->cc_op = CC_OP_FLAGS; +} + +DISAS_INSN(addsub) +{ + int reg; + int dest; + int src; + int tmp; + int addr; + int add; + + add = (insn & 0x4000) != 0; + reg = DREG(insn, 9); + dest = gen_new_qreg(QMODE_I32); + if (insn & 0x100) { + tmp = gen_ea(s, insn, OS_LONG, 0, &addr); + src = reg; + } else { + tmp = reg; + src = gen_ea(s, insn, OS_LONG, 0, NULL); + } + if (add) { + gen_op_add32(dest, tmp, src); + gen_op_update_xflag_lt(dest, src); + s->cc_op = CC_OP_ADD; + } else { + gen_op_update_xflag_lt(tmp, src); + gen_op_sub32(dest, tmp, src); + s->cc_op = CC_OP_SUB; + } + gen_op_update_cc_add(dest, src); + if (insn & 0x100) { + gen_ea(s, insn, OS_LONG, dest, &addr); + } else { + gen_op_mov32(reg, dest); + } +} + + +/* Reverse the order of the bits in REG. */ +DISAS_INSN(bitrev) +{ + int val; + int tmp1; + int tmp2; + int reg; + + val = gen_new_qreg(QMODE_I32); + tmp1 = gen_new_qreg(QMODE_I32); + tmp2 = gen_new_qreg(QMODE_I32); + reg = DREG(insn, 0); + gen_op_mov32(val, reg); + /* Reverse bits within each nibble. */ + gen_op_shl32(tmp1, val, gen_im32(3)); + gen_op_and32(tmp1, tmp1, gen_im32(0x88888888)); + gen_op_shl32(tmp2, val, gen_im32(1)); + gen_op_and32(tmp2, tmp2, gen_im32(0x44444444)); + gen_op_or32(tmp1, tmp1, tmp2); + gen_op_shr32(tmp2, val, gen_im32(1)); + gen_op_and32(tmp2, tmp2, gen_im32(0x22222222)); + gen_op_or32(tmp1, tmp1, tmp2); + gen_op_shr32(tmp2, val, gen_im32(3)); + gen_op_and32(tmp2, tmp2, gen_im32(0x11111111)); + gen_op_or32(tmp1, tmp1, tmp2); + /* Reverse nibbles withing bytes. */ + gen_op_shl32(val, tmp1, gen_im32(4)); + gen_op_and32(val, val, gen_im32(0xf0f0f0f0)); + gen_op_shr32(tmp2, tmp1, gen_im32(4)); + gen_op_and32(tmp2, tmp2, gen_im32(0x0f0f0f0f)); + gen_op_or32(val, val, tmp2); + /* Reverse bytes. */ + gen_op_bswap32(reg, val); + gen_op_mov32(reg, val); +} + +DISAS_INSN(bitop_reg) +{ + int opsize; + int op; + int src1; + int src2; + int tmp; + int addr; + int dest; + + if ((insn & 0x38) != 0) + opsize = OS_BYTE; + else + opsize = OS_LONG; + op = (insn >> 6) & 3; + src1 = gen_ea(s, insn, opsize, 0, op ? &addr: NULL); + src2 = DREG(insn, 9); + dest = gen_new_qreg(QMODE_I32); + + gen_flush_flags(s); + tmp = gen_new_qreg(QMODE_I32); + if (opsize == OS_BYTE) + gen_op_and32(tmp, src2, gen_im32(7)); + else + gen_op_and32(tmp, src2, gen_im32(31)); + src2 = tmp; + tmp = gen_new_qreg(QMODE_I32); + gen_op_shl32(tmp, gen_im32(1), src2); + + gen_op_btest(src1, tmp); + switch (op) { + case 1: /* bchg */ + gen_op_xor32(dest, src1, tmp); + break; + case 2: /* bclr */ + gen_op_not32(tmp, tmp); + gen_op_and32(dest, src1, tmp); + break; + case 3: /* bset */ + gen_op_or32(dest, src1, tmp); + break; + default: /* btst */ + break; + } + if (op) + gen_ea(s, insn, opsize, dest, &addr); +} + +DISAS_INSN(sats) +{ + int reg; + int tmp; + int l1; + + reg = DREG(insn, 0); + tmp = gen_new_qreg(QMODE_I32); + gen_flush_flags(s); + gen_op_and32(tmp, QREG_CC_DEST, gen_im32(CCF_V)); + l1 = gen_new_label(); + gen_op_jmp_z32(tmp, l1); + tmp = gen_new_qreg(QMODE_I32); + gen_op_shr32(tmp, reg, gen_im32(31)); + gen_op_xor32(tmp, tmp, gen_im32(0x80000000)); + gen_op_mov32(reg, tmp); + gen_set_label(l1); + gen_logic_cc(s, tmp); +} + +static void gen_push(int val) +{ + int tmp; + + tmp = gen_new_qreg(QMODE_I32); + gen_op_sub32(tmp, QREG_SP, gen_im32(4)); + gen_store(OS_LONG, tmp, val); + gen_op_mov32(QREG_SP, tmp); +} + +DISAS_INSN(movem) +{ + int addr; + int i; + uint16_t mask; + int reg; + int tmp; + int is_load; + + mask = lduw(s->pc); + s->pc += 2; + tmp = gen_lea(s, insn, OS_LONG); + addr = gen_new_qreg(QMODE_I32); + gen_op_mov32(addr, tmp); + is_load = ((insn & 0x0400) != 0); + for (i = 0; i < 16; i++, mask >>= 1) { + if (mask & 1) { + if (i < 8) + reg = DREG(i, 0); + else + reg = AREG(i, 0); + if (is_load) { + tmp = gen_load(OS_LONG, addr, 0); + gen_op_mov32(reg, tmp); + } else { + gen_store(OS_LONG, addr, reg); + } + if (mask != 1) + gen_op_add32(addr, addr, gen_im32(4)); + } + } +} + +DISAS_INSN(bitop_im) +{ + int opsize; + int op; + int src1; + uint32_t mask; + int bitnum; + int tmp; + int addr; + int dest; + + if ((insn & 0x38) != 0) + opsize = OS_BYTE; + else + opsize = OS_LONG; + op = (insn >> 6) & 3; + + bitnum = lduw(s->pc); + s->pc += 2; + if (bitnum & 0xff00) { + disas_undef(s, insn); + return; + } + + src1 = gen_ea(s, insn, opsize, 0, op ? &addr: NULL); + + gen_flush_flags(s); + tmp = gen_new_qreg(QMODE_I32); + if (opsize == OS_BYTE) + bitnum &= 7; + else + bitnum &= 31; + mask = 1 << bitnum; + + gen_op_btest(src1, gen_im32(mask)); + if (op) + dest = gen_new_qreg(QMODE_I32); + else + dest = -1; + + switch (op) { + case 1: /* bchg */ + gen_op_xor32(dest, src1, gen_im32(mask)); + break; + case 2: /* bclr */ + gen_op_and32(dest, src1, gen_im32(~mask)); + break; + case 3: /* bset */ + gen_op_or32(dest, src1, gen_im32(mask)); + break; + default: /* btst */ + break; + } + if (op) + gen_ea(s, insn, opsize, dest, &addr); +} + +DISAS_INSN(arith_im) +{ + int op; + int src1; + int dest; + int src2; + int addr; + + op = (insn >> 9) & 7; + src1 = gen_ea(s, insn, OS_LONG, 0, (op == 6) ? NULL : &addr); + src2 = gen_im32(read_im32(s)); + dest = gen_new_qreg(QMODE_I32); + switch (op) { + case 0: /* ori */ + gen_op_or32(dest, src1, src2); + gen_logic_cc(s, dest); + break; + case 1: /* andi */ + gen_op_and32(dest, src1, src2); + gen_logic_cc(s, dest); + break; + case 2: /* subi */ + gen_op_mov32(dest, src1); + gen_op_update_xflag_lt(dest, src2); + gen_op_sub32(dest, dest, src2); + gen_op_update_cc_add(dest, src2); + s->cc_op = CC_OP_SUB; + break; + case 3: /* addi */ + gen_op_mov32(dest, src1); + gen_op_add32(dest, dest, src2); + gen_op_update_cc_add(dest, src2); + gen_op_update_xflag_lt(dest, src2); + s->cc_op = CC_OP_ADD; + break; + case 5: /* eori */ + gen_op_xor32(dest, src1, src2); + gen_logic_cc(s, dest); + break; + case 6: /* cmpi */ + gen_op_mov32(dest, src1); + gen_op_sub32(dest, dest, src2); + gen_op_update_cc_add(dest, src2); + s->cc_op = CC_OP_SUB; + break; + default: + abort(); + } + if (op != 6) { + gen_ea(s, insn, OS_LONG, dest, &addr); + } +} + +DISAS_INSN(byterev) +{ + int reg; + + reg = DREG(insn, 0); + gen_op_bswap32(reg, reg); +} + +DISAS_INSN(move) +{ + int src; + int dest; + int op; + int opsize; + + switch (insn >> 12) { + case 1: /* move.b */ + opsize = OS_BYTE; + break; + case 2: /* move.l */ + opsize = OS_LONG; + break; + case 3: /* move.w */ + opsize = OS_WORD; + break; + default: + abort(); + } + src = gen_ea(s, insn, opsize, -1, NULL); + op = (insn >> 6) & 7; + if (op == 1) { + /* movea */ + /* The value will already have been sign extended. */ + dest = AREG(insn, 9); + gen_op_mov32(dest, src); + } else { + /* normal move */ + uint16_t dest_ea; + dest_ea = ((insn >> 9) & 7) | (op << 3); + gen_ea(s, dest_ea, opsize, src, NULL); + /* This will be correct because loads sign extend. */ + gen_logic_cc(s, src); + } +} + +DISAS_INSN(negx) +{ + int reg; + int dest; + int tmp; + + gen_flush_flags(s); + reg = DREG(insn, 0); + dest = gen_new_qreg(QMODE_I32); + gen_op_mov32 (dest, gen_im32(0)); + gen_op_subx_cc(dest, reg); + /* !Z is sticky. */ + tmp = gen_new_qreg(QMODE_I32); + gen_op_mov32 (tmp, QREG_CC_DEST); + gen_op_update_cc_add(dest, reg); + gen_op_mov32(reg, dest); + s->cc_op = CC_OP_DYNAMIC; + gen_flush_flags(s); + gen_op_or32(tmp, tmp, gen_im32(~CCF_Z)); + gen_op_and32(QREG_CC_DEST, QREG_CC_DEST, tmp); + s->cc_op = CC_OP_FLAGS; +} + +DISAS_INSN(lea) +{ + int reg; + int tmp; + + reg = AREG(insn, 9); + tmp = gen_lea(s, insn, OS_LONG); + gen_op_mov32(reg, tmp); +} + +DISAS_INSN(clr) +{ + int opsize; + + switch ((insn >> 6) & 3) { + case 0: /* clr.b */ + opsize = OS_BYTE; + break; + case 1: /* clr.w */ + opsize = OS_WORD; + break; + case 2: /* clr.l */ + opsize = OS_LONG; + break; + default: + abort(); + } + gen_ea (s, insn, opsize, gen_im32(0), NULL); + gen_logic_cc(s, gen_im32(0)); +} + +DISAS_INSN(move_from_ccr) +{ + int reg; + int dest; + + gen_flush_flags(s); + dest = gen_new_qreg(QMODE_I32); + gen_op_get_xflag(dest); + gen_op_shl32(dest, dest, gen_im32(4)); + gen_op_or32(dest, dest, QREG_CC_DEST); + reg = DREG(insn, 0); + gen_partset_reg(OS_WORD, reg, dest); +} + +DISAS_INSN(neg) +{ + int reg; + int src1; + + reg = DREG(insn, 0); + src1 = gen_new_qreg(QMODE_I32); + gen_op_mov32(src1, reg); + gen_op_neg32(reg, src1); + s->cc_op = CC_OP_SUB; + gen_op_update_cc_add(reg, src1); + gen_op_update_xflag_lt(gen_im32(0), src1); + s->cc_op = CC_OP_SUB; +} + +DISAS_INSN(move_to_ccr) +{ + int src1; + int reg; + + s->cc_op = CC_OP_FLAGS; + if ((insn & 0x38) == 0) + { + src1 = gen_new_qreg(QMODE_I32); + reg = DREG(insn, 0); + gen_op_and32(src1, reg, gen_im32(0xf)); + gen_op_logic_cc(src1); + gen_op_shr32(src1, reg, gen_im32(4)); + gen_op_and32(src1, src1, gen_im32(1)); + gen_op_update_xflag_tst(src1); + } + else if ((insn & 0x3f) != 0x3c) + { + uint8_t val; + val = ldsb(s->pc); + s->pc += 2; + gen_op_logic_cc(gen_im32(val & 0xf)); + gen_op_update_xflag_tst(gen_im32((val & 0x10) >> 4)); + } + else + disas_undef(s, insn); +} + +DISAS_INSN(not) +{ + int reg; + + reg = DREG(insn, 0); + gen_op_not32(reg, reg); + gen_logic_cc(s, reg); +} + +DISAS_INSN(swap) +{ + int dest; + int src1; + int src2; + int reg; + + dest = gen_new_qreg(QMODE_I32); + src1 = gen_new_qreg(QMODE_I32); + src2 = gen_new_qreg(QMODE_I32); + reg = DREG(insn, 0); + gen_op_shl32(src1, reg, gen_im32(16)); + gen_op_shr32(src2, reg, gen_im32(16)); + gen_op_or32(dest, src1, src2); + gen_op_mov32(reg, dest); + gen_logic_cc(s, dest); +} + +DISAS_INSN(pea) +{ + int tmp; + + tmp = gen_lea(s, insn, OS_LONG); + gen_push(tmp); +} + +DISAS_INSN(ext) +{ + int reg; + int op; + int tmp; + + reg = DREG(insn, 0); + op = (insn >> 6) & 7; + tmp = gen_new_qreg(QMODE_I32); + if (op == 3) + gen_op_ext16s32(tmp, reg); + else + gen_op_ext8s32(tmp, reg); + if (op == 2) + gen_partset_reg(OS_WORD, reg, tmp); + else + gen_op_mov32(reg, tmp); + gen_logic_cc(s, tmp); +} + +DISAS_INSN(tst) +{ + int opsize; + int tmp; + + switch ((insn >> 6) & 3) { + case 0: /* tst.b */ + opsize = OS_BYTE; + break; + case 1: /* tst.w */ + opsize = OS_WORD; + break; + case 2: /* tst.l */ + opsize = OS_LONG; + break; + default: + abort(); + } + tmp = gen_ea(s, insn, opsize, -1, NULL); + gen_logic_cc(s, tmp); +} + +DISAS_INSN(pulse) +{ + /* Implemented as a NOP. */ +} + +DISAS_INSN(illegal) +{ + gen_exception(s, s->pc - 2, EXCP_ILLEGAL); +} + +/* ??? This should be atomic. */ +DISAS_INSN(tas) +{ + int dest; + int src1; + int addr; + + dest = gen_new_qreg(QMODE_I32); + src1 = gen_ea(s, insn, OS_BYTE, -1, &addr); + gen_logic_cc(s, src1); + gen_op_or32(dest, src1, gen_im32(0x80)); + gen_ea(s, insn, OS_BYTE, dest, &addr); +} + +DISAS_INSN(mull) +{ + uint16_t ext; + int reg; + int src1; + int dest; + + /* The upper 32 bits of the product are discarded, so + muls.l and mulu.l are functionally equivalent. */ + ext = lduw(s->pc); + s->pc += 2; + if (ext & 0x87ff) { + gen_exception(s, s->pc - 4, EXCP_UNSUPPORTED); + return; + } + reg = DREG(ext, 12); + src1 = gen_ea(s, insn, OS_LONG, 0, NULL); + dest = gen_new_qreg(QMODE_I32); + gen_op_mul32(dest, src1, reg); + gen_op_mov32(reg, dest); + /* Unlike m68k, coldfire always clears the overflow bit. */ + gen_logic_cc(s, dest); +} + +DISAS_INSN(link) +{ + int16_t offset; + int reg; + int tmp; + + offset = ldsw(s->pc); + s->pc += 2; + reg = AREG(insn, 0); + tmp = gen_new_qreg(QMODE_I32); + gen_op_sub32(tmp, QREG_SP, gen_im32(4)); + gen_store(OS_LONG, tmp, reg); + if (reg != QREG_SP) + gen_op_mov32(reg, tmp); + gen_op_add32(QREG_SP, tmp, gen_im32(offset)); +} + +DISAS_INSN(unlk) +{ + int src; + int reg; + int tmp; + + src = gen_new_qreg(QMODE_I32); + reg = AREG(insn, 0); + gen_op_mov32(src, reg); + tmp = gen_load(OS_LONG, src, 0); + gen_op_mov32(reg, tmp); + gen_op_add32(QREG_SP, src, gen_im32(4)); +} + +DISAS_INSN(nop) +{ +} + +DISAS_INSN(rts) +{ + int tmp; + + tmp = gen_load(OS_LONG, QREG_SP, 0); + gen_op_add32(QREG_SP, QREG_SP, gen_im32(4)); + gen_jmp(s, tmp); +} + +DISAS_INSN(jump) +{ + int tmp; + + /* Load the target address first to ensure correct exception + behavior. */ + tmp = gen_lea(s, insn, OS_LONG); + if ((insn & 0x40) == 0) { + /* jsr */ + gen_push(gen_im32(s->pc)); + } + gen_jmp(s, tmp); +} + +DISAS_INSN(addsubq) +{ + int src1; + int src2; + int dest; + int val; + int addr; + + src1 = gen_ea(s, insn, OS_LONG, 0, &addr); + val = (insn >> 9) & 7; + if (val == 0) + val = 8; + src2 = gen_im32(val); + dest = gen_new_qreg(QMODE_I32); + gen_op_mov32(dest, src1); + if ((insn & 0x38) == 0x08) { + /* Don't update condition codes if the destination is an + address register. */ + if (insn & 0x0100) { + gen_op_sub32(dest, dest, src2); + } else { + gen_op_add32(dest, dest, src2); + } + } else { + if (insn & 0x0100) { + gen_op_update_xflag_lt(dest, src2); + gen_op_sub32(dest, dest, src2); + s->cc_op = CC_OP_SUB; + } else { + gen_op_add32(dest, dest, src2); + gen_op_update_xflag_lt(dest, src2); + s->cc_op = CC_OP_ADD; + } + gen_op_update_cc_add(dest, src2); + } + gen_ea(s, insn, OS_LONG, dest, &addr); +} + +DISAS_INSN(tpf) +{ + switch (insn & 7) { + case 2: /* One extension word. */ + s->pc += 2; + break; + case 3: /* Two extension words. */ + s->pc += 4; + break; + case 4: /* No extension words. */ + break; + default: + disas_undef(s, insn); + } +} + +DISAS_INSN(branch) +{ + int32_t offset; + uint32_t base; + int op; + int l1; + + base = s->pc; + op = (insn >> 8) & 0xf; + offset = (int8_t)insn; + if (offset == 0) { + offset = ldsw(s->pc); + s->pc += 2; + } else if (offset == -1) { + offset = read_im32(s); + } + if (op == 1) { + /* bsr */ + gen_push(gen_im32(s->pc)); + } + gen_flush_cc_op(s); + if (op > 1) { + /* Bcc */ + l1 = gen_new_label(); + gen_jmpcc(s, ((insn >> 8) & 0xf) ^ 1, l1); + gen_jmp_tb(s, 1, base + offset); + gen_set_label(l1); + gen_jmp_tb(s, 0, s->pc); + } else { + /* Unconditional branch. */ + gen_jmp_tb(s, 0, base + offset); + } +} + +DISAS_INSN(moveq) +{ + int tmp; + + tmp = gen_im32((int8_t)insn); + gen_op_mov32(DREG(insn, 9), tmp); + gen_logic_cc(s, tmp); +} + +DISAS_INSN(mvzs) +{ + int opsize; + int src; + int reg; + + if (insn & 0x40) + opsize = OS_WORD; + else + opsize = OS_BYTE; + src = gen_ea(s, insn, opsize, (insn & 0x80) ? 0 : -1, NULL); + reg = DREG(insn, 9); + gen_op_mov32(reg, src); + gen_logic_cc(s, src); +} + +DISAS_INSN(or) +{ + int reg; + int dest; + int src; + int addr; + + reg = DREG(insn, 9); + dest = gen_new_qreg(QMODE_I32); + if (insn & 0x100) { + src = gen_ea(s, insn, OS_LONG, 0, &addr); + gen_op_or32(dest, src, reg); + gen_ea(s, insn, OS_LONG, dest, &addr); + } else { + src = gen_ea(s, insn, OS_LONG, 0, NULL); + gen_op_or32(dest, src, reg); + gen_op_mov32(reg, dest); + } + gen_logic_cc(s, dest); +} + +DISAS_INSN(suba) +{ + int src; + int reg; + + src = gen_ea(s, insn, OS_LONG, 0, NULL); + reg = AREG(insn, 9); + gen_op_sub32(reg, reg, src); +} + +DISAS_INSN(subx) +{ + int reg; + int src; + int dest; + int tmp; + + gen_flush_flags(s); + reg = DREG(insn, 9); + src = DREG(insn, 0); + dest = gen_new_qreg(QMODE_I32); + gen_op_mov32 (dest, reg); + gen_op_subx_cc(dest, src); + /* !Z is sticky. */ + tmp = gen_new_qreg(QMODE_I32); + gen_op_mov32 (tmp, QREG_CC_DEST); + gen_op_update_cc_add(dest, src); + gen_op_mov32(reg, dest); + s->cc_op = CC_OP_DYNAMIC; + gen_flush_flags(s); + gen_op_or32(tmp, tmp, gen_im32(~CCF_Z)); + gen_op_and32(QREG_CC_DEST, QREG_CC_DEST, tmp); + s->cc_op = CC_OP_FLAGS; +} + +DISAS_INSN(mov3q) +{ + int src; + int val; + + val = (insn >> 9) & 7; + if (val == 0) + val = -1; + src = gen_im32(val); + gen_logic_cc(s, src); + gen_ea(s, insn, OS_LONG, src, NULL); +} + +DISAS_INSN(cmp) +{ + int op; + int src; + int reg; + int dest; + int opsize; + + op = (insn >> 6) & 3; + switch (op) { + case 0: /* cmp.b */ + opsize = OS_BYTE; + s->cc_op = CC_OP_CMPB; + break; + case 1: /* cmp.w */ + opsize = OS_WORD; + s->cc_op = CC_OP_CMPW; + break; + case 2: /* cmp.l */ + opsize = OS_LONG; + s->cc_op = CC_OP_SUB; + break; + default: + abort(); + } + src = gen_ea(s, insn, opsize, -1, NULL); + reg = DREG(insn, 9); + dest = gen_new_qreg(QMODE_I32); + gen_op_sub32(dest, reg, src); + gen_op_update_cc_add(dest, src); +} + +DISAS_INSN(cmpa) +{ + int opsize; + int src; + int reg; + int dest; + + if (insn & 0x100) { + opsize = OS_LONG; + } else { + opsize = OS_WORD; + } + src = gen_ea(s, insn, opsize, -1, NULL); + reg = AREG(insn, 9); + dest = gen_new_qreg(QMODE_I32); + gen_op_sub32(dest, reg, src); + gen_op_update_cc_add(dest, src); + s->cc_op = CC_OP_SUB; +} + +DISAS_INSN(eor) +{ + int src; + int reg; + int dest; + int addr; + + src = gen_ea(s, insn, OS_LONG, 0, &addr); + reg = DREG(insn, 9); + dest = gen_new_qreg(QMODE_I32); + gen_op_xor32(dest, src, reg); + gen_logic_cc(s, dest); + gen_ea(s, insn, OS_LONG, dest, &addr); +} + +DISAS_INSN(and) +{ + int src; + int reg; + int dest; + int addr; + + reg = DREG(insn, 9); + dest = gen_new_qreg(QMODE_I32); + if (insn & 0x100) { + src = gen_ea(s, insn, OS_LONG, 0, &addr); + gen_op_and32(dest, src, reg); + gen_ea(s, insn, OS_LONG, dest, &addr); + } else { + src = gen_ea(s, insn, OS_LONG, 0, NULL); + gen_op_and32(dest, src, reg); + gen_op_mov32(reg, dest); + } + gen_logic_cc(s, dest); +} + +DISAS_INSN(adda) +{ + int src; + int reg; + + src = gen_ea(s, insn, OS_LONG, 0, NULL); + reg = AREG(insn, 9); + gen_op_add32(reg, reg, src); +} + +DISAS_INSN(addx) +{ + int reg; + int src; + int dest; + int tmp; + + gen_flush_flags(s); + reg = DREG(insn, 9); + src = DREG(insn, 0); + dest = gen_new_qreg(QMODE_I32); + gen_op_mov32 (dest, reg); + gen_op_addx_cc(dest, src); + /* !Z is sticky. */ + tmp = gen_new_qreg(QMODE_I32); + gen_op_mov32 (tmp, QREG_CC_DEST); + gen_op_update_cc_add(dest, src); + gen_op_mov32(reg, dest); + s->cc_op = CC_OP_DYNAMIC; + gen_flush_flags(s); + gen_op_or32(tmp, tmp, gen_im32(~CCF_Z)); + gen_op_and32(QREG_CC_DEST, QREG_CC_DEST, tmp); + s->cc_op = CC_OP_FLAGS; +} + +DISAS_INSN(shift_im) +{ + int reg; + int tmp; + + reg = DREG(insn, 0); + tmp = (insn >> 9) & 7; + if (tmp == 0) + tmp = 8; + if (insn & 0x100) { + gen_op_shl_im_cc(reg, tmp); + s->cc_op = CC_OP_SHL; + } else { + if (insn & 8) { + gen_op_shr_im_cc(reg, tmp); + s->cc_op = CC_OP_SHR; + } else { + gen_op_sar_im_cc(reg, tmp); + s->cc_op = CC_OP_SAR; + } + } +} + +DISAS_INSN(shift_reg) +{ + int reg; + int src; + int tmp; + + reg = DREG(insn, 0); + src = DREG(insn, 9); + tmp = gen_new_qreg(QMODE_I32); + gen_op_and32(tmp, src, gen_im32(63)); + if (insn & 0x100) { + gen_op_shl_cc(reg, tmp); + s->cc_op = CC_OP_SHL; + } else { + if (insn & 8) { + gen_op_shr_cc(reg, tmp); + s->cc_op = CC_OP_SHR; + } else { + gen_op_sar_cc(reg, tmp); + s->cc_op = CC_OP_SAR; + } + } +} + +DISAS_INSN(ff1) +{ + cpu_abort(NULL, "Unimplemented insn: ff1"); +} + +DISAS_INSN(strldsr) +{ + uint16_t ext; + uint32_t addr; + + addr = s->pc - 2; + ext = lduw(s->pc); + s->pc += 2; + if (ext != 0x46FC) + gen_exception(s, addr, EXCP_UNSUPPORTED); + else + gen_exception(s, addr, EXCP_PRIVILEGE); +} + +DISAS_INSN(move_from_sr) +{ + gen_exception(s, s->pc - 2, EXCP_PRIVILEGE); +} + +DISAS_INSN(move_to_sr) +{ + gen_exception(s, s->pc - 2, EXCP_PRIVILEGE); +} + +DISAS_INSN(move_from_usp) +{ + gen_exception(s, s->pc - 2, EXCP_PRIVILEGE); +} + +DISAS_INSN(move_to_usp) +{ + gen_exception(s, s->pc - 2, EXCP_PRIVILEGE); +} + +DISAS_INSN(halt) +{ + gen_exception(s, s->pc, EXCP_HLT); +} + +DISAS_INSN(stop) +{ + gen_exception(s, s->pc - 2, EXCP_PRIVILEGE); +} + +DISAS_INSN(rte) +{ + gen_exception(s, s->pc - 2, EXCP_PRIVILEGE); +} + +DISAS_INSN(movec) +{ + gen_exception(s, s->pc - 2, EXCP_PRIVILEGE); +} + +DISAS_INSN(intouch) +{ + gen_exception(s, s->pc - 2, EXCP_PRIVILEGE); +} + +DISAS_INSN(cpushl) +{ + gen_exception(s, s->pc - 2, EXCP_PRIVILEGE); +} + +DISAS_INSN(wddata) +{ + gen_exception(s, s->pc - 2, EXCP_PRIVILEGE); +} + +DISAS_INSN(wdebug) +{ + gen_exception(s, s->pc - 2, EXCP_PRIVILEGE); +} + +DISAS_INSN(trap) +{ + gen_exception(s, s->pc - 2, EXCP_TRAP0 + (insn & 0xf)); +} + +/* ??? FP exceptions are not implemented. Most exceptions are deferred until + immediately before the next FP instruction is executed. */ +DISAS_INSN(fpu) +{ + uint16_t ext; + int opmode; + int src; + int dest; + int res; + int round; + int opsize; + + ext = lduw(s->pc); + s->pc += 2; + opmode = ext & 0x7f; + switch ((ext >> 13) & 7) { + case 0: case 2: + break; + case 1: + goto undef; + case 3: /* fmove out */ + src = FREG(ext, 7); + /* fmove */ + /* ??? TODO: Proper behavior on overflow. */ + switch ((ext >> 10) & 7) { + case 0: + opsize = OS_LONG; + res = gen_new_qreg(QMODE_I32); + gen_op_f64_to_i32(res, src); + break; + case 1: + opsize = OS_SINGLE; + res = gen_new_qreg(QMODE_F32); + gen_op_f64_to_f32(res, src); + break; + case 4: + opsize = OS_WORD; + res = gen_new_qreg(QMODE_I32); + gen_op_f64_to_i32(res, src); + break; + case 5: + opsize = OS_DOUBLE; + res = src; + break; + case 6: + opsize = OS_BYTE; + res = gen_new_qreg(QMODE_I32); + gen_op_f64_to_i32(res, src); + break; + default: + goto undef; + } + gen_ea(s, insn, opsize, res, NULL); + return; + case 4: /* fmove to control register. */ + switch ((ext >> 10) & 7) { + case 4: /* FPCR */ + /* Not implemented. Ignore writes. */ + break; + case 1: /* FPIAR */ + case 2: /* FPSR */ + default: + cpu_abort(NULL, "Unimplemented: fmove to control %d", + (ext >> 10) & 7); + } + break; + case 5: /* fmove from control register. */ + switch ((ext >> 10) & 7) { + case 4: /* FPCR */ + /* Not implemented. Always return zero. */ + res = gen_im32(0); + break; + case 1: /* FPIAR */ + case 2: /* FPSR */ + default: + cpu_abort(NULL, "Unimplemented: fmove from control %d", + (ext >> 10) & 7); + goto undef; + } + gen_ea(s, insn, OS_LONG, res, NULL); + break; + case 6: /* fmovem */ + case 7: + { + int addr; + uint16_t mask; + if ((ext & 0x1f00) != 0x1000 || (ext & 0xff) == 0) + goto undef; + src = gen_lea(s, insn, OS_LONG); + addr = gen_new_qreg(QMODE_I32); + gen_op_mov32(addr, src); + mask = 0x80; + dest = QREG_F0; + while (mask) { + if (ext & mask) { + if (ext & (1 << 13)) { + /* store */ + gen_op_stf64(addr, dest); + } else { + /* load */ + gen_op_ldf64(dest, addr); + } + if (ext & (mask - 1)) + gen_op_add32(addr, addr, gen_im32(8)); + } + mask >>= 1; + dest++; + } + } + return; + } + if (ext & (1 << 14)) { + int tmp; + + /* Source effective address. */ + switch ((ext >> 10) & 7) { + case 0: opsize = OS_LONG; break; + case 1: opsize = OS_SINGLE; break; + case 4: opsize = OS_WORD; break; + case 5: opsize = OS_DOUBLE; break; + case 6: opsize = OS_BYTE; break; + default: + goto undef; + } + tmp = gen_ea(s, insn, opsize, -1, NULL); + if (opsize == OS_DOUBLE) { + src = tmp; + } else { + src = gen_new_qreg(QMODE_F64); + switch (opsize) { + case OS_LONG: + case OS_WORD: + case OS_BYTE: + gen_op_i32_to_f64(src, tmp); + break; + case OS_SINGLE: + gen_op_f32_to_f64(src, tmp); + break; + } + } + } else { + /* Source register. */ + src = FREG(ext, 10); + } + dest = FREG(ext, 7); + res = gen_new_qreg(QMODE_F64); + if (opmode != 0x3a) + gen_op_movf64(res, dest); + round = 1; + switch (opmode) { + case 0: case 0x40: case 0x44: /* fmove */ + gen_op_movf64(res, src); + break; + case 1: /* fint */ + gen_op_iround_f64(res, src); + round = 0; + break; + case 3: /* fintrz */ + gen_op_itrunc_f64(res, src); + round = 0; + break; + case 4: case 0x41: case 0x45: /* fsqrt */ + gen_op_sqrtf64(res, src); + break; + case 0x18: case 0x58: case 0x5c: /* fabs */ + gen_op_absf64(res, src); + break; + case 0x1a: case 0x5a: case 0x5e: /* fneg */ + gen_op_chsf64(res, src); + break; + case 0x20: case 0x60: case 0x64: /* fdiv */ + gen_op_divf64(res, res, src); + break; + case 0x22: case 0x62: case 0x66: /* fadd */ + gen_op_addf64(res, res, src); + break; + case 0x23: case 0x63: case 0x67: /* fmul */ + gen_op_mulf64(res, res, src); + break; + case 0x28: case 0x68: case 0x6c: /* fsub */ + gen_op_subf64(res, res, src); + break; + case 0x38: /* fcmp */ + gen_op_sub_cmpf64(res, res, src); + dest = 0; + round = 0; + break; + case 0x3a: /* ftst */ + gen_op_movf64(res, src); + dest = 0; + round = 0; + break; + default: + goto undef; + } + if (round) { + if (opmode & 0x40) { + if ((opmode & 0x4) != 0) + round = 0; + } else if ((s->fpcr & M68K_FPCR_PREC) == 0) { + round = 0; + } + } + if (round) { + int tmp; + + tmp = gen_new_qreg(QMODE_F32); + gen_op_f64_to_f32(tmp, res); + gen_op_f32_to_f64(res, tmp); + } + gen_op_fp_result(res); + if (dest) { + gen_op_movf64(dest, res); + } + return; +undef: + s->pc -= 2; + disas_undef_fpu(s, insn); +} + +DISAS_INSN(fbcc) +{ + uint32_t offset; + uint32_t addr; + int flag; + int zero; + int l1; + + addr = s->pc; + offset = ldsw(s->pc); + s->pc += 2; + if (insn & (1 << 6)) { + offset = (offset << 16) | lduw(s->pc); + s->pc += 2; + } + + l1 = gen_new_label(); + /* TODO: Raise BSUN exception. */ + flag = gen_new_qreg(QMODE_I32); + zero = gen_new_qreg(QMODE_F64); + gen_op_zerof64(zero); + gen_op_compare_quietf64(flag, QREG_FP_RESULT, zero); + /* Jump to l1 if condition is true. */ + switch (insn & 0xf) { + case 0: /* f */ + break; + case 1: /* eq (=0) */ + gen_op_jmp_z32(flag, l1); + break; + case 2: /* ogt (=1) */ + gen_op_sub32(flag, flag, gen_im32(1)); + gen_op_jmp_z32(flag, l1); + break; + case 3: /* oge (=0 or =1) */ + gen_op_jmp_z32(flag, l1); + gen_op_sub32(flag, flag, gen_im32(1)); + gen_op_jmp_z32(flag, l1); + break; + case 4: /* olt (=-1) */ + gen_op_jmp_s32(flag, l1); + break; + case 5: /* ole (=-1 or =0) */ + gen_op_jmp_s32(flag, l1); + gen_op_jmp_z32(flag, l1); + break; + case 6: /* ogl (=-1 or =1) */ + gen_op_jmp_s32(flag, l1); + gen_op_sub32(flag, flag, gen_im32(1)); + gen_op_jmp_z32(flag, l1); + break; + case 7: /* or (=2) */ + gen_op_sub32(flag, flag, gen_im32(2)); + gen_op_jmp_z32(flag, l1); + break; + case 8: /* un (<2) */ + gen_op_sub32(flag, flag, gen_im32(2)); + gen_op_jmp_s32(flag, l1); + break; + case 9: /* ueq (=0 or =2) */ + gen_op_jmp_z32(flag, l1); + gen_op_sub32(flag, flag, gen_im32(2)); + gen_op_jmp_z32(flag, l1); + break; + case 10: /* ugt (>0) */ + /* ??? Add jmp_gtu. */ + gen_op_sub32(flag, flag, gen_im32(1)); + gen_op_jmp_ns32(flag, l1); + break; + case 11: /* uge (>=0) */ + gen_op_jmp_ns32(flag, l1); + break; + case 12: /* ult (=-1 or =2) */ + gen_op_jmp_s32(flag, l1); + gen_op_sub32(flag, flag, gen_im32(2)); + gen_op_jmp_z32(flag, l1); + break; + case 13: /* ule (!=1) */ + gen_op_sub32(flag, flag, gen_im32(1)); + gen_op_jmp_nz32(flag, l1); + break; + case 14: /* ne (!=0) */ + gen_op_jmp_nz32(flag, l1); + break; + case 15: /* t */ + gen_op_mov32(flag, gen_im32(1)); + break; + } + gen_jmp_tb(s, 0, s->pc); + gen_set_label(l1); + gen_jmp_tb(s, 1, addr + offset); +} + +static disas_proc opcode_table[65536]; + +static void +register_opcode (disas_proc proc, uint16_t opcode, uint16_t mask) +{ + int i; + int from; + int to; + + /* Sanity check. All set bits must be included in the mask. */ + if (opcode & ~mask) + abort(); + /* This could probably be cleverer. For now just optimize the case where + the top bits are known. */ + /* Find the first zero bit in the mask. */ + i = 0x8000; + while ((i & mask) != 0) + i >>= 1; + /* Iterate over all combinations of this and lower bits. */ + if (i == 0) + i = 1; + else + i <<= 1; + from = opcode & ~(i - 1); + to = from + i; + for (i = from; i < to; i++) + { + if ((i & mask) == opcode) + opcode_table[i] = proc; + } +} + +/* Register m68k opcode handlers. Order is important. + Later insn override earlier ones. */ +static void +register_m68k_insns (m68k_def_t *def) +{ + uint32_t iflags; + + iflags = def->insns; +#define INSN(name, opcode, mask, isa) \ + if (iflags & M68K_INSN_##isa) \ + register_opcode(disas_##name, 0x##opcode, 0x##mask) + INSN(undef, 0000, 0000, CF_A); + INSN(arith_im, 0080, fff8, CF_A); + INSN(bitrev, 00c0, fff8, CF_C); + INSN(bitop_reg, 0100, f1c0, CF_A); + INSN(bitop_reg, 0140, f1c0, CF_A); + INSN(bitop_reg, 0180, f1c0, CF_A); + INSN(bitop_reg, 01c0, f1c0, CF_A); + INSN(arith_im, 0280, fff8, CF_A); + INSN(byterev, 02c0, fff8, CF_A); + INSN(arith_im, 0480, fff8, CF_A); + INSN(ff1, 04c0, fff8, CF_C); + INSN(arith_im, 0680, fff8, CF_A); + INSN(bitop_im, 0800, ffc0, CF_A); + INSN(bitop_im, 0840, ffc0, CF_A); + INSN(bitop_im, 0880, ffc0, CF_A); + INSN(bitop_im, 08c0, ffc0, CF_A); + INSN(arith_im, 0a80, fff8, CF_A); + INSN(arith_im, 0c00, ff38, CF_A); + INSN(move, 1000, f000, CF_A); + INSN(move, 2000, f000, CF_A); + INSN(move, 3000, f000, CF_A); + INSN(strldsr, 40e7, ffff, CF_A); + INSN(negx, 4080, fff8, CF_A); + INSN(move_from_sr, 40c0, fff8, CF_A); + INSN(lea, 41c0, f1c0, CF_A); + INSN(clr, 4200, ff00, CF_A); + INSN(undef, 42c0, ffc0, CF_A); + INSN(move_from_ccr, 42c0, fff8, CF_A); + INSN(neg, 4480, fff8, CF_A); + INSN(move_to_ccr, 44c0, ffc0, CF_A); + INSN(not, 4680, fff8, CF_A); + INSN(move_to_sr, 46c0, ffc0, CF_A); + INSN(pea, 4840, ffc0, CF_A); + INSN(swap, 4840, fff8, CF_A); + INSN(movem, 48c0, fbc0, CF_A); + INSN(ext, 4880, fff8, CF_A); + INSN(ext, 48c0, fff8, CF_A); + INSN(ext, 49c0, fff8, CF_A); + INSN(tst, 4a00, ff00, CF_A); + INSN(tas, 4ac0, ffc0, CF_B); + INSN(halt, 4ac8, ffff, CF_A); + INSN(pulse, 4acc, ffff, CF_A); + INSN(illegal, 4afc, ffff, CF_A); + INSN(mull, 4c00, ffc0, CF_A); + INSN(divl, 4c40, ffc0, CF_A); + INSN(sats, 4c80, fff8, CF_B); + INSN(trap, 4e40, fff0, CF_A); + INSN(link, 4e50, fff8, CF_A); + INSN(unlk, 4e58, fff8, CF_A); + INSN(move_to_usp, 4e60, fff8, CF_B); + INSN(move_from_usp, 4e68, fff8, CF_B); + INSN(nop, 4e71, ffff, CF_A); + INSN(stop, 4e72, ffff, CF_A); + INSN(rte, 4e73, ffff, CF_A); + INSN(rts, 4e75, ffff, CF_A); + INSN(movec, 4e7b, ffff, CF_A); + INSN(jump, 4e80, ffc0, CF_A); + INSN(jump, 4ec0, ffc0, CF_A); + INSN(addsubq, 5180, f1c0, CF_A); + INSN(scc, 50c0, f0f8, CF_A); + INSN(addsubq, 5080, f1c0, CF_A); + INSN(tpf, 51f8, fff8, CF_A); + INSN(branch, 6000, f000, CF_A); + INSN(moveq, 7000, f100, CF_A); + INSN(mvzs, 7100, f100, CF_B); + INSN(or, 8000, f000, CF_A); + INSN(divw, 80c0, f0c0, CF_A); + INSN(addsub, 9000, f000, CF_A); + INSN(subx, 9180, f1f8, CF_A); + INSN(suba, 91c0, f1c0, CF_A); + INSN(undef_mac, a000, f000, CF_A); + INSN(mov3q, a140, f1c0, CF_B); + INSN(cmp, b000, f1c0, CF_B); /* cmp.b */ + INSN(cmp, b040, f1c0, CF_B); /* cmp.w */ + INSN(cmpa, b0c0, f1c0, CF_B); /* cmpa.w */ + INSN(cmp, b080, f1c0, CF_A); + INSN(cmpa, b1c0, f1c0, CF_A); + INSN(eor, b180, f1c0, CF_A); + INSN(and, c000, f000, CF_A); + INSN(mulw, c0c0, f0c0, CF_A); + INSN(addsub, d000, f000, CF_A); + INSN(addx, d180, f1f8, CF_A); + INSN(adda, d1c0, f1c0, CF_A); + INSN(shift_im, e080, f0f0, CF_A); + INSN(shift_reg, e0a0, f0f0, CF_A); + INSN(undef_fpu, f000, f000, CF_A); + INSN(fpu, f200, ffc0, CF_FPU); + INSN(fbcc, f280, ffc0, CF_FPU); + INSN(intouch, f340, ffc0, CF_A); + INSN(cpushl, f428, ff38, CF_A); + INSN(wddata, fb00, ff00, CF_A); + INSN(wdebug, fbc0, ffc0, CF_A); +#undef INSN +} + +/* ??? Some of this implementation is not exception safe. We should always + write back the result to memory before setting the condition codes. */ +static void disas_m68k_insn(CPUState * env, DisasContext *s) +{ + uint16_t insn; + + insn = lduw(s->pc); + s->pc += 2; + + opcode_table[insn](s, insn); +} + +#if 0 +/* Save the result of a floating point operation. */ +static void expand_op_fp_result(qOP *qop) +{ + gen_op_movf64(QREG_FP_RESULT, qop->args[0]); +} + +/* Dummy op to indicate that the flags have been set. */ +static void expand_op_flags_set(qOP *qop) +{ +} + +/* Convert the confition codes into CC_OP_FLAGS format. */ +static void expand_op_flush_flags(qOP *qop) +{ + int cc_opreg; + + if (qop->args[0] == CC_OP_DYNAMIC) + cc_opreg = QREG_CC_OP; + else + cc_opreg = gen_im32(qop->args[0]); + gen_op_helper32(QREG_NULL, cc_opreg, HELPER_flush_flags); +} + +/* Set CC_DEST after a logical or direct flag setting operation. */ +static void expand_op_logic_cc(qOP *qop) +{ + gen_op_mov32(QREG_CC_DEST, qop->args[0]); +} + +/* Set CC_SRC and CC_DEST after an arithmetic operation. */ +static void expand_op_update_cc_add(qOP *qop) +{ + gen_op_mov32(QREG_CC_DEST, qop->args[0]); + gen_op_mov32(QREG_CC_SRC, qop->args[1]); +} + +/* Update the X flag. */ +static void expand_op_update_xflag(qOP *qop) +{ + int arg0; + int arg1; + + arg0 = qop->args[0]; + arg1 = qop->args[1]; + if (arg1 == QREG_NULL) { + /* CC_X = arg0. */ + gen_op_mov32(QREG_CC_X, arg0); + } else { + /* CC_X = arg0 < (unsigned)arg1. */ + gen_op_set_ltu32(QREG_CC_X, arg0, arg1); + } +} + +/* Set arg0 to the contents of the X flag. */ +static void expand_op_get_xflag(qOP *qop) +{ + gen_op_mov32(qop->args[0], QREG_CC_X); +} + +/* Expand a shift by immediate. The ISA only allows shifts by 1-8, so we + already know the shift is within range. */ +static inline void expand_shift_im(qOP *qop, int right, int arith) +{ + int val; + int reg; + int tmp; + int im; + + reg = qop->args[0]; + im = qop->args[1]; + tmp = gen_im32(im); + val = gen_new_qreg(QMODE_I32); + gen_op_mov32(val, reg); + gen_op_mov32(QREG_CC_DEST, val); + gen_op_mov32(QREG_CC_SRC, tmp); + if (right) { + if (arith) { + gen_op_sar32(reg, val, tmp); + } else { + gen_op_shr32(reg, val, tmp); + } + if (im == 1) + tmp = QREG_NULL; + else + tmp = gen_im32(im - 1); + } else { + gen_op_shl32(reg, val, tmp); + tmp = gen_im32(32 - im); + } + if (tmp != QREG_NULL) + gen_op_shr32(val, val, tmp); + gen_op_and32(QREG_CC_X, val, gen_im32(1)); +} + +static void expand_op_shl_im_cc(qOP *qop) +{ + expand_shift_im(qop, 0, 0); +} + +static void expand_op_shr_im_cc(qOP *qop) +{ + expand_shift_im(qop, 1, 0); +} + +static void expand_op_sar_im_cc(qOP *qop) +{ + expand_shift_im(qop, 1, 1); +} + +/* Expand a shift by register. */ +/* ??? This gives incorrect answers for shifts by 0 or >= 32 */ +static inline void expand_shift_reg(qOP *qop, int right, int arith) +{ + int val; + int reg; + int shift; + int tmp; + + reg = qop->args[0]; + shift = qop->args[1]; + val = gen_new_qreg(QMODE_I32); + gen_op_mov32(val, reg); + gen_op_mov32(QREG_CC_DEST, val); + gen_op_mov32(QREG_CC_SRC, shift); + tmp = gen_new_qreg(QMODE_I32); + if (right) { + if (arith) { + gen_op_sar32(reg, val, shift); + } else { + gen_op_shr32(reg, val, shift); + } + gen_op_sub32(tmp, shift, gen_im32(1)); + } else { + gen_op_shl32(reg, val, shift); + gen_op_sub32(tmp, gen_im32(31), shift); + } + gen_op_shl32(val, val, tmp); + gen_op_and32(QREG_CC_X, val, gen_im32(1)); +} + +static void expand_op_shl_cc(qOP *qop) +{ + expand_shift_reg(qop, 0, 0); +} + +static void expand_op_shr_cc(qOP *qop) +{ + expand_shift_reg(qop, 1, 0); +} + +static void expand_op_sar_cc(qOP *qop) +{ + expand_shift_reg(qop, 1, 1); +} + +/* Set the Z flag to (arg0 & arg1) == 0. */ +static void expand_op_btest(qOP *qop) +{ + int tmp; + int l1; + + l1 = gen_new_label(); + tmp = gen_new_qreg(QMODE_I32); + gen_op_and32(tmp, qop->args[0], qop->args[1]); + gen_op_and32(QREG_CC_DEST, QREG_CC_DEST, gen_im32(~(uint32_t)CCF_Z)); + gen_op_jmp_nz32(tmp, l1); + gen_op_or32(QREG_CC_DEST, QREG_CC_DEST, gen_im32(CCF_Z)); + gen_op_label(l1); +} + +/* arg0 += arg1 + CC_X */ +static void expand_op_addx_cc(qOP *qop) +{ + int arg0 = qop->args[0]; + int arg1 = qop->args[1]; + int l1, l2; + + gen_op_add32 (arg0, arg0, arg1); + l1 = gen_new_label(); + l2 = gen_new_label(); + gen_op_jmp_z32(QREG_CC_X, l1); + gen_op_add32(arg0, arg0, gen_im32(1)); + gen_op_mov32(QREG_CC_OP, gen_im32(CC_OP_ADDX)); + gen_op_set_leu32(QREG_CC_X, arg0, arg1); + gen_op_jmp(l2); + gen_set_label(l1); + gen_op_mov32(QREG_CC_OP, gen_im32(CC_OP_ADD)); + gen_op_set_ltu32(QREG_CC_X, arg0, arg1); + gen_set_label(l2); +} + +/* arg0 -= arg1 + CC_X */ +static void expand_op_subx_cc(qOP *qop) +{ + int arg0 = qop->args[0]; + int arg1 = qop->args[1]; + int l1, l2; + + l1 = gen_new_label(); + l2 = gen_new_label(); + gen_op_jmp_z32(QREG_CC_X, l1); + gen_op_set_leu32(QREG_CC_X, arg0, arg1); + gen_op_sub32(arg0, arg0, gen_im32(1)); + gen_op_mov32(QREG_CC_OP, gen_im32(CC_OP_SUBX)); + gen_op_jmp(l2); + gen_set_label(l1); + gen_op_set_ltu32(QREG_CC_X, arg0, arg1); + gen_op_mov32(QREG_CC_OP, gen_im32(CC_OP_SUB)); + gen_set_label(l2); + gen_op_sub32 (arg0, arg0, arg1); +} + +/* Expand target specific ops to generic qops. */ +static void expand_target_qops(void) +{ + qOP *qop; + qOP *next; + int c; + + /* Copy the list of qops, expanding target specific ops as we go. */ + qop = gen_first_qop; + gen_first_qop = NULL; + gen_last_qop = NULL; + for (; qop; qop = next) { + c = qop->opcode; + next = qop->next; + if (c < FIRST_TARGET_OP) { + qop->prev = gen_last_qop; + qop->next = NULL; + if (gen_last_qop) + gen_last_qop->next = qop; + else + gen_first_qop = qop; + gen_last_qop = qop; + continue; + } + switch (c) { +#define DEF(name, nargs, barrier) \ + case INDEX_op_##name: \ + expand_op_##name(qop); \ + break; +#include "qop-target.def" +#undef DEF + default: + cpu_abort(NULL, "Unexpanded target qop"); + } + } +} + +/* ??? Implement this. */ +static void +optimize_flags(void) +{ +} +#endif + +/* generate intermediate code for basic block 'tb'. */ +int gen_intermediate_code_internal(CPUState *env, TranslationBlock *tb, + int search_pc) +{ + DisasContext dc1, *dc = &dc1; + uint16_t *gen_opc_end; + int j, lj; + target_ulong pc_start; + int pc_offset; + int last_cc_op; + + /* generate intermediate code */ + pc_start = tb->pc; + + dc->tb = tb; + + gen_opc_ptr = gen_opc_buf; + gen_opc_end = gen_opc_buf + OPC_MAX_SIZE; + gen_opparam_ptr = gen_opparam_buf; + + dc->is_jmp = DISAS_NEXT; + dc->pc = pc_start; + dc->cc_op = CC_OP_DYNAMIC; + dc->singlestep_enabled = env->singlestep_enabled; + dc->fpcr = env->fpcr; + nb_gen_labels = 0; + lj = -1; + do { + free_qreg = 0; + pc_offset = dc->pc - pc_start; + gen_throws_exception = NULL; + if (env->nb_breakpoints > 0) { + for(j = 0; j < env->nb_breakpoints; j++) { + if (env->breakpoints[j] == dc->pc) { + gen_exception(dc, dc->pc, EXCP_DEBUG); + dc->is_jmp = DISAS_JUMP; + break; + } + } + if (dc->is_jmp) + break; + } + if (search_pc) { + j = gen_opc_ptr - gen_opc_buf; + if (lj < j) { + lj++; + while (lj < j) + gen_opc_instr_start[lj++] = 0; + } + gen_opc_pc[lj] = dc->pc; + gen_opc_instr_start[lj] = 1; + } + last_cc_op = dc->cc_op; + disas_m68k_insn(env, dc); + } while (!dc->is_jmp && gen_opc_ptr < gen_opc_end && + !env->singlestep_enabled && + (pc_offset) < (TARGET_PAGE_SIZE - 32)); + + if (__builtin_expect(env->singlestep_enabled, 0)) { + /* Make sure the pc is updated, and raise a debug exception. */ + if (!dc->is_jmp) { + gen_flush_cc_op(dc); + gen_op_mov32(QREG_PC, gen_im32((long)dc->pc)); + } + gen_op_raise_exception(EXCP_DEBUG); + } else { + switch(dc->is_jmp) { + case DISAS_NEXT: + gen_flush_cc_op(dc); + gen_jmp_tb(dc, 0, dc->pc); + break; + default: + case DISAS_JUMP: + case DISAS_UPDATE: + gen_flush_cc_op(dc); + /* indicate that the hash table must be used to find the next TB */ + gen_op_mov32(QREG_T0, gen_im32(0)); + gen_op_exit_tb(); + break; + case DISAS_TB_JUMP: + /* nothing more to generate */ + break; + } + } + *gen_opc_ptr = INDEX_op_end; + +#ifdef DEBUG_DISAS + if (loglevel & CPU_LOG_TB_IN_ASM) { + fprintf(logfile, "----------------\n"); + fprintf(logfile, "IN: %s\n", lookup_symbol(pc_start)); + target_disas(logfile, pc_start, dc->pc - pc_start, 0); + fprintf(logfile, "\n"); + if (loglevel & (CPU_LOG_TB_OP)) { + fprintf(logfile, "OP:\n"); + dump_ops(gen_opc_buf, gen_opparam_buf); + fprintf(logfile, "\n"); + } + } +#endif + if (search_pc) { + j = gen_opc_ptr - gen_opc_buf; + lj++; + while (lj <= j) + gen_opc_instr_start[lj++] = 0; + tb->size = 0; + } else { + tb->size = dc->pc - pc_start; + } + + //optimize_flags(); + //expand_target_qops(); + return 0; +} + +int gen_intermediate_code(CPUState *env, TranslationBlock *tb) +{ + return gen_intermediate_code_internal(env, tb, 0); +} + +int gen_intermediate_code_pc(CPUState *env, TranslationBlock *tb) +{ + return gen_intermediate_code_internal(env, tb, 1); +} + +CPUM68KState *cpu_m68k_init(void) +{ + CPUM68KState *env; + + env = malloc(sizeof(CPUM68KState)); + if (!env) + return NULL; + cpu_exec_init(env); + + memset(env, 0, sizeof(CPUM68KState)); + /* ??? FP regs should be initialized to NaN. */ + cpu_single_env = env; + env->cc_op = CC_OP_FLAGS; + return env; +} + +void cpu_m68k_close(CPUM68KState *env) +{ + free(env); +} + +m68k_def_t *m68k_find_by_name(const char *name) +{ + m68k_def_t *def; + + def = m68k_cpu_defs; + while (def->name) + { + if (strcmp(def->name, name) == 0) + return def; + def++; + } + return NULL; +} + +void cpu_m68k_register(CPUM68KState *env, m68k_def_t *def) +{ + register_m68k_insns(def); +} + +void cpu_dump_state(CPUState *env, FILE *f, + int (*cpu_fprintf)(FILE *f, const char *fmt, ...), + int flags) +{ + int i; + uint16_t sr; + CPU_DoubleU u; + for (i = 0; i < 8; i++) + { + u.d = env->fregs[i]; + cpu_fprintf (f, "D%d = %08x A%d = %08x F%d = %08x%08x (%12g)\n", + i, env->dregs[i], i, env->aregs[i], + i, u.l.upper, u.l.lower, u.d); + } + cpu_fprintf (f, "PC = %08x ", env->pc); + sr = env->sr; + cpu_fprintf (f, "SR = %04x %c%c%c%c%c ", sr, (sr & 0x10) ? 'X' : '-', + (sr & CCF_N) ? 'N' : '-', (sr & CCF_Z) ? 'Z' : '-', + (sr & CCF_V) ? 'V' : '-', (sr & CCF_C) ? 'C' : '-'); + cpu_fprintf (f, "FPRESULT = %12g\n", env->fp_result); +} + +/* ??? */ +target_ulong cpu_get_phys_page_debug(CPUState *env, target_ulong addr) +{ + return addr; +} + +#if defined(CONFIG_USER_ONLY) + +int cpu_m68k_handle_mmu_fault (CPUState *env, target_ulong address, int rw, + int is_user, int is_softmmu) +{ + env->exception_index = EXCP_ACCESS; + env->mmu.ar = address; + return 1; +} + +#else + +#error not implemented + +#endif diff --git a/translate-all.c b/translate-all.c index 0de429f5b9..43365478bd 100644 --- a/translate-all.c +++ b/translate-all.c @@ -302,6 +302,8 @@ int cpu_restore_state(TranslationBlock *tb, } env->access_type = type; } +#elif defined(TARGET_M68K) + env->pc = gen_opc_pc[j]; #elif defined(TARGET_MIPS) env->PC = gen_opc_pc[j]; env->hflags &= ~MIPS_HFLAG_BMASK;