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ColdFire target.

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2196 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
pbrook 2006-10-22 00:18:54 +00:00
parent 223b8a40d1
commit e6e5906b6e
32 changed files with 5227 additions and 12 deletions
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7
Makefile.target
View File

@ -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)

10
configure vendored
View File

@ -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

7
cpu-all.h
View File

@ -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

62
cpu-exec.c
View File

@ -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,

4
disas.c
View File

@ -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;

16
fpu/softfloat-native.c
View File

@ -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
/*----------------------------------------------------------------------------

2
fpu/softfloat-native.h
View File

@ -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)
{

11
fpu/softfloat.c
View File

@ -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

2
fpu/softfloat.h
View File

@ -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 );

67
gdbstub.c
View File

@ -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)
{

5
hw/pl110.c
View File

@ -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);

25
linux-user/elfload.c
View File

@ -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

216
linux-user/m68k-semi.c Normal file
View File

@ -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 <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/time.h>
#include <time.h>
#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);
}
}

171
linux-user/m68k-sim.c Normal file
View File

@ -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 <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#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);
}
}

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/* 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);

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/*
* 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

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/* 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 */

121
linux-user/main.c
View File

@ -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;

2
linux-user/mmap.c
View File

@ -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 */

3
linux-user/qemu.h
View File

@ -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;

11
linux-user/syscall.c
View File

@ -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;

67
linux-user/syscall_defs.h
View File

@ -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 {

6
qemu-doc.texi
View File

@ -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

140
target-m68k/cpu.h Normal file
View File

@ -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

47
target-m68k/exec.h Normal file
View File

@ -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);

149
target-m68k/helper.c Normal file
View File

@ -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 <stdio.h>
#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;
}

12
target-m68k/m68k-qreg.h Normal file
View File

@ -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
};

83
target-m68k/op-hacks.h Normal file
View File

@ -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));
}
}

678
target-m68k/op.c Normal file
View File

@ -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();
}

34
target-m68k/qregs.def Normal file
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@ -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)

2759
target-m68k/translate.c Normal file
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File diff suppressed because it is too large Load Diff

2
translate-all.c
View File

@ -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;