OpenE2K/qemu-e2k
13
4
Fork 0
Code Issues 4 Pull Requests Projects 2 Releases Activity
1bc012f65a
qemu-e2k/target-mips/op_helper.c
ths 924b2c07cd Add proper float*_is_nan prototypes. 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2902 c046a42c-6fe2-441c-8c8c-71466251a162
2007-05-31 16:17:52 +00:00

1254 lines
40 KiB
C
Raw Blame History

/*
* MIPS emulation helpers for qemu.
*
* Copyright (c) 2004-2005 Jocelyn Mayer
*
* 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
* Lesser 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 <stdlib.h>
#include "exec.h"
#define GETPC() (__builtin_return_address(0))
/*****************************************************************************/
/* Exceptions processing helpers */
void cpu_loop_exit(void)
{
longjmp(env->jmp_env, 1);
}
void do_raise_exception_err (uint32_t exception, int error_code)
{
#if 1
if (logfile && exception < 0x100)
fprintf(logfile, "%s: %d %d\n", __func__, exception, error_code);
#endif
env->exception_index = exception;
env->error_code = error_code;
T0 = 0;
cpu_loop_exit();
}
void do_raise_exception (uint32_t exception)
{
do_raise_exception_err(exception, 0);
}
void do_restore_state (void *pc_ptr)
{
TranslationBlock *tb;
unsigned long pc = (unsigned long) pc_ptr;
tb = tb_find_pc (pc);
cpu_restore_state (tb, env, pc, NULL);
}
void do_raise_exception_direct_err (uint32_t exception, int error_code)
{
do_restore_state (GETPC ());
do_raise_exception_err (exception, error_code);
}
void do_raise_exception_direct (uint32_t exception)
{
do_raise_exception_direct_err (exception, 0);
}
#define MEMSUFFIX _raw
#include "op_helper_mem.c"
#undef MEMSUFFIX
#if !defined(CONFIG_USER_ONLY)
#define MEMSUFFIX _user
#include "op_helper_mem.c"
#undef MEMSUFFIX
#define MEMSUFFIX _kernel
#include "op_helper_mem.c"
#undef MEMSUFFIX
#endif
#ifdef TARGET_MIPS64
#if TARGET_LONG_BITS > HOST_LONG_BITS
/* Those might call libgcc functions. */
void do_dsll (void)
{
T0 = T0 << T1;
}
void do_dsll32 (void)
{
T0 = T0 << (T1 + 32);
}
void do_dsra (void)
{
T0 = (int64_t)T0 >> T1;
}
void do_dsra32 (void)
{
T0 = (int64_t)T0 >> (T1 + 32);
}
void do_dsrl (void)
{
T0 = T0 >> T1;
}
void do_dsrl32 (void)
{
T0 = T0 >> (T1 + 32);
}
void do_drotr (void)
{
target_ulong tmp;
if (T1) {
tmp = T0 << (0x40 - T1);
T0 = (T0 >> T1) | tmp;
}
}
void do_drotr32 (void)
{
target_ulong tmp;
if (T1) {
tmp = T0 << (0x40 - (32 + T1));
T0 = (T0 >> (32 + T1)) | tmp;
}
}
void do_dsllv (void)
{
T0 = T1 << (T0 & 0x3F);
}
void do_dsrav (void)
{
T0 = (int64_t)T1 >> (T0 & 0x3F);
}
void do_dsrlv (void)
{
T0 = T1 >> (T0 & 0x3F);
}
void do_drotrv (void)
{
target_ulong tmp;
T0 &= 0x3F;
if (T0) {
tmp = T1 << (0x40 - T0);
T0 = (T1 >> T0) | tmp;
} else
T0 = T1;
}
#endif /* TARGET_LONG_BITS > HOST_LONG_BITS */
#endif /* TARGET_MIPS64 */
/* 64 bits arithmetic for 32 bits hosts */
#if TARGET_LONG_BITS > HOST_LONG_BITS
static inline uint64_t get_HILO (void)
{
return (env->HI << 32) | (uint32_t)env->LO;
}
static inline void set_HILO (uint64_t HILO)
{
env->LO = (int32_t)HILO;
env->HI = (int32_t)(HILO >> 32);
}
void do_mult (void)
{
set_HILO((int64_t)(int32_t)T0 * (int64_t)(int32_t)T1);
}
void do_multu (void)
{
set_HILO((uint64_t)(uint32_t)T0 * (uint64_t)(uint32_t)T1);
}
void do_madd (void)
{
int64_t tmp;
tmp = ((int64_t)(int32_t)T0 * (int64_t)(int32_t)T1);
set_HILO((int64_t)get_HILO() + tmp);
}
void do_maddu (void)
{
uint64_t tmp;
tmp = ((uint64_t)(uint32_t)T0 * (uint64_t)(uint32_t)T1);
set_HILO(get_HILO() + tmp);
}
void do_msub (void)
{
int64_t tmp;
tmp = ((int64_t)(int32_t)T0 * (int64_t)(int32_t)T1);
set_HILO((int64_t)get_HILO() - tmp);
}
void do_msubu (void)
{
uint64_t tmp;
tmp = ((uint64_t)(uint32_t)T0 * (uint64_t)(uint32_t)T1);
set_HILO(get_HILO() - tmp);
}
#endif
#if HOST_LONG_BITS < 64
void do_div (void)
{
/* 64bit datatypes because we may see overflow/underflow. */
if (T1 != 0) {
env->LO = (int32_t)((int64_t)(int32_t)T0 / (int32_t)T1);
env->HI = (int32_t)((int64_t)(int32_t)T0 % (int32_t)T1);
}
}
#endif
#ifdef TARGET_MIPS64
void do_ddiv (void)
{
if (T1 != 0) {
lldiv_t res = lldiv((int64_t)T0, (int64_t)T1);
env->LO = res.quot;
env->HI = res.rem;
}
}
#if TARGET_LONG_BITS > HOST_LONG_BITS
void do_ddivu (void)
{
if (T1 != 0) {
env->LO = T0 / T1;
env->HI = T0 % T1;
}
}
#endif
#endif /* TARGET_MIPS64 */
#if defined(CONFIG_USER_ONLY)
void do_mfc0_random (void)
{
cpu_abort(env, "mfc0 random\n");
}
void do_mfc0_count (void)
{
cpu_abort(env, "mfc0 count\n");
}
void cpu_mips_store_count(CPUState *env, uint32_t value)
{
cpu_abort(env, "mtc0 count\n");
}
void cpu_mips_store_compare(CPUState *env, uint32_t value)
{
cpu_abort(env, "mtc0 compare\n");
}
void cpu_mips_update_irq(CPUState *env)
{
cpu_abort(env, "mtc0 status / mtc0 cause\n");
}
void do_mtc0_status_debug(uint32_t old, uint32_t val)
{
cpu_abort(env, "mtc0 status debug\n");
}
void do_mtc0_status_irqraise_debug (void)
{
cpu_abort(env, "mtc0 status irqraise debug\n");
}
void cpu_mips_tlb_flush (CPUState *env, int flush_global)
{
cpu_abort(env, "mips_tlb_flush\n");
}
#else
/* CP0 helpers */
void do_mfc0_random (void)
{
T0 = (int32_t)cpu_mips_get_random(env);
}
void do_mfc0_count (void)
{
T0 = (int32_t)cpu_mips_get_count(env);
}
void do_mtc0_status_debug(uint32_t old, uint32_t val)
{
fprintf(logfile, "Status %08x (%08x) => %08x (%08x) Cause %08x",
old, old & env->CP0_Cause & CP0Ca_IP_mask,
val, val & env->CP0_Cause & CP0Ca_IP_mask,
env->CP0_Cause);
(env->hflags & MIPS_HFLAG_UM) ? fputs(", UM\n", logfile)
: fputs("\n", logfile);
}
void do_mtc0_status_irqraise_debug(void)
{
fprintf(logfile, "Raise pending IRQs\n");
}
void fpu_handle_exception(void)
{
#ifdef CONFIG_SOFTFLOAT
int flags = get_float_exception_flags(&env->fp_status);
unsigned int cpuflags = 0, enable, cause = 0;
enable = GET_FP_ENABLE(env->fcr31);
/* determine current flags */
if (flags & float_flag_invalid) {
cpuflags |= FP_INVALID;
cause |= FP_INVALID & enable;
}
if (flags & float_flag_divbyzero) {
cpuflags |= FP_DIV0;
cause |= FP_DIV0 & enable;
}
if (flags & float_flag_overflow) {
cpuflags |= FP_OVERFLOW;
cause |= FP_OVERFLOW & enable;
}
if (flags & float_flag_underflow) {
cpuflags |= FP_UNDERFLOW;
cause |= FP_UNDERFLOW & enable;
}
if (flags & float_flag_inexact) {
cpuflags |= FP_INEXACT;
cause |= FP_INEXACT & enable;
}
SET_FP_FLAGS(env->fcr31, cpuflags);
SET_FP_CAUSE(env->fcr31, cause);
#else
SET_FP_FLAGS(env->fcr31, 0);
SET_FP_CAUSE(env->fcr31, 0);
#endif
}
/* TLB management */
void cpu_mips_tlb_flush (CPUState *env, int flush_global)
{
/* Flush qemu's TLB and discard all shadowed entries. */
tlb_flush (env, flush_global);
env->tlb_in_use = env->nb_tlb;
}
static void r4k_mips_tlb_flush_extra (CPUState *env, int first)
{
/* Discard entries from env->tlb[first] onwards. */
while (env->tlb_in_use > first) {
r4k_invalidate_tlb(env, --env->tlb_in_use, 0);
}
}
static void r4k_fill_tlb (int idx)
{
r4k_tlb_t *tlb;
/* XXX: detect conflicting TLBs and raise a MCHECK exception when needed */
tlb = &env->mmu.r4k.tlb[idx];
tlb->VPN = env->CP0_EntryHi & (TARGET_PAGE_MASK << 1);
#ifdef TARGET_MIPS64
tlb->VPN &= 0xC00000FFFFFFFFFFULL;
#endif
tlb->ASID = env->CP0_EntryHi & 0xFF;
tlb->PageMask = env->CP0_PageMask;
tlb->G = env->CP0_EntryLo0 & env->CP0_EntryLo1 & 1;
tlb->V0 = (env->CP0_EntryLo0 & 2) != 0;
tlb->D0 = (env->CP0_EntryLo0 & 4) != 0;
tlb->C0 = (env->CP0_EntryLo0 >> 3) & 0x7;
tlb->PFN[0] = (env->CP0_EntryLo0 >> 6) << 12;
tlb->V1 = (env->CP0_EntryLo1 & 2) != 0;
tlb->D1 = (env->CP0_EntryLo1 & 4) != 0;
tlb->C1 = (env->CP0_EntryLo1 >> 3) & 0x7;
tlb->PFN[1] = (env->CP0_EntryLo1 >> 6) << 12;
}
void r4k_do_tlbwi (void)
{
/* Discard cached TLB entries. We could avoid doing this if the
tlbwi is just upgrading access permissions on the current entry;
that might be a further win. */
r4k_mips_tlb_flush_extra (env, env->nb_tlb);
r4k_invalidate_tlb(env, env->CP0_Index % env->nb_tlb, 0);
r4k_fill_tlb(env->CP0_Index % env->nb_tlb);
}
void r4k_do_tlbwr (void)
{
int r = cpu_mips_get_random(env);
r4k_invalidate_tlb(env, r, 1);
r4k_fill_tlb(r);
}
void r4k_do_tlbp (void)
{
r4k_tlb_t *tlb;
target_ulong mask;
target_ulong tag;
target_ulong VPN;
uint8_t ASID;
int i;
ASID = env->CP0_EntryHi & 0xFF;
for (i = 0; i < env->nb_tlb; i++) {
tlb = &env->mmu.r4k.tlb[i];
/* 1k pages are not supported. */
mask = tlb->PageMask | ~(TARGET_PAGE_MASK << 1);
tag = env->CP0_EntryHi & ~mask;
VPN = tlb->VPN & ~mask;
/* Check ASID, virtual page number & size */
if ((tlb->G == 1 || tlb->ASID == ASID) && VPN == tag) {
/* TLB match */
env->CP0_Index = i;
break;
}
}
if (i == env->nb_tlb) {
/* No match. Discard any shadow entries, if any of them match. */
for (i = env->nb_tlb; i < env->tlb_in_use; i++) {
tlb = &env->mmu.r4k.tlb[i];
/* 1k pages are not supported. */
mask = tlb->PageMask | ~(TARGET_PAGE_MASK << 1);
tag = env->CP0_EntryHi & ~mask;
VPN = tlb->VPN & ~mask;
/* Check ASID, virtual page number & size */
if ((tlb->G == 1 || tlb->ASID == ASID) && VPN == tag) {
r4k_mips_tlb_flush_extra (env, i);
break;
}
}
env->CP0_Index |= 0x80000000;
}
}
void r4k_do_tlbr (void)
{
r4k_tlb_t *tlb;
uint8_t ASID;
ASID = env->CP0_EntryHi & 0xFF;
tlb = &env->mmu.r4k.tlb[env->CP0_Index % env->nb_tlb];
/* If this will change the current ASID, flush qemu's TLB. */
if (ASID != tlb->ASID)
cpu_mips_tlb_flush (env, 1);
r4k_mips_tlb_flush_extra(env, env->nb_tlb);
env->CP0_EntryHi = tlb->VPN | tlb->ASID;
env->CP0_PageMask = tlb->PageMask;
env->CP0_EntryLo0 = tlb->G | (tlb->V0 << 1) | (tlb->D0 << 2) |
(tlb->C0 << 3) | (tlb->PFN[0] >> 6);
env->CP0_EntryLo1 = tlb->G | (tlb->V1 << 1) | (tlb->D1 << 2) |
(tlb->C1 << 3) | (tlb->PFN[1] >> 6);
}
#endif /* !CONFIG_USER_ONLY */
void dump_ldst (const unsigned char *func)
{
if (loglevel)
fprintf(logfile, "%s => " TARGET_FMT_lx " " TARGET_FMT_lx "\n", __func__, T0, T1);
}
void dump_sc (void)
{
if (loglevel) {
fprintf(logfile, "%s " TARGET_FMT_lx " at " TARGET_FMT_lx " (" TARGET_FMT_lx ")\n", __func__,
T1, T0, env->CP0_LLAddr);
}
}
void debug_pre_eret (void)
{
fprintf(logfile, "ERET: PC " TARGET_FMT_lx " EPC " TARGET_FMT_lx,
env->PC, env->CP0_EPC);
if (env->CP0_Status & (1 << CP0St_ERL))
fprintf(logfile, " ErrorEPC " TARGET_FMT_lx, env->CP0_ErrorEPC);
if (env->hflags & MIPS_HFLAG_DM)
fprintf(logfile, " DEPC " TARGET_FMT_lx, env->CP0_DEPC);
fputs("\n", logfile);
}
void debug_post_eret (void)
{
fprintf(logfile, " => PC " TARGET_FMT_lx " EPC " TARGET_FMT_lx,
env->PC, env->CP0_EPC);
if (env->CP0_Status & (1 << CP0St_ERL))
fprintf(logfile, " ErrorEPC " TARGET_FMT_lx, env->CP0_ErrorEPC);
if (env->hflags & MIPS_HFLAG_DM)
fprintf(logfile, " DEPC " TARGET_FMT_lx, env->CP0_DEPC);
if (env->hflags & MIPS_HFLAG_UM)
fputs(", UM\n", logfile);
else
fputs("\n", logfile);
}
void do_pmon (int function)
{
function /= 2;
switch (function) {
case 2: /* TODO: char inbyte(int waitflag); */
if (env->gpr[4] == 0)
env->gpr[2] = -1;
/* Fall through */
case 11: /* TODO: char inbyte (void); */
env->gpr[2] = -1;
break;
case 3:
case 12:
printf("%c", (char)(env->gpr[4] & 0xFF));
break;
case 17:
break;
case 158:
{
unsigned char *fmt = (void *)(unsigned long)env->gpr[4];
printf("%s", fmt);
}
break;
}
}
#if !defined(CONFIG_USER_ONLY)
static void do_unaligned_access (target_ulong addr, int is_write, int is_user, void *retaddr);
#define MMUSUFFIX _mmu
#define ALIGNED_ONLY
#define SHIFT 0
#include "softmmu_template.h"
#define SHIFT 1
#include "softmmu_template.h"
#define SHIFT 2
#include "softmmu_template.h"
#define SHIFT 3
#include "softmmu_template.h"
static void do_unaligned_access (target_ulong addr, int is_write, int is_user, void *retaddr)
{
env->CP0_BadVAddr = addr;
do_restore_state (retaddr);
do_raise_exception ((is_write == 1) ? EXCP_AdES : EXCP_AdEL);
}
void tlb_fill (target_ulong addr, int is_write, int is_user, void *retaddr)
{
TranslationBlock *tb;
CPUState *saved_env;
unsigned long pc;
int ret;
/* XXX: hack to restore env in all cases, even if not called from
generated code */
saved_env = env;
env = cpu_single_env;
ret = cpu_mips_handle_mmu_fault(env, addr, is_write, is_user, 1);
if (ret) {
if (retaddr) {
/* now we have a real cpu fault */
pc = (unsigned long)retaddr;
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, NULL);
}
}
do_raise_exception_err(env->exception_index, env->error_code);
}
env = saved_env;
}
#endif
/* Complex FPU operations which may need stack space. */
/* convert MIPS rounding mode in FCR31 to IEEE library */
unsigned int ieee_rm[] = {
float_round_nearest_even,
float_round_to_zero,
float_round_up,
float_round_down
};
#define RESTORE_ROUNDING_MODE \
set_float_rounding_mode(ieee_rm[env->fcr31 & 3], &env->fp_status)
void do_ctc1 (void)
{
switch(T1) {
case 25:
if (T0 & 0xffffff00)
return;
env->fcr31 = (env->fcr31 & 0x017fffff) | ((T0 & 0xfe) << 24) |
((T0 & 0x1) << 23);
break;
case 26:
if (T0 & 0x007c0000)
return;
env->fcr31 = (env->fcr31 & 0xfffc0f83) | (T0 & 0x0003f07c);
break;
case 28:
if (T0 & 0x007c0000)
return;
env->fcr31 = (env->fcr31 & 0xfefff07c) | (T0 & 0x00000f83) |
((T0 & 0x4) << 22);
break;
case 31:
if (T0 & 0x007c0000)
return;
env->fcr31 = T0;
break;
default:
return;
}
/* set rounding mode */
RESTORE_ROUNDING_MODE;
set_float_exception_flags(0, &env->fp_status);
if ((GET_FP_ENABLE(env->fcr31) | 0x20) & GET_FP_CAUSE(env->fcr31))
do_raise_exception(EXCP_FPE);
}
inline char ieee_ex_to_mips(char xcpt)
{
return (xcpt & float_flag_inexact) >> 5 |
(xcpt & float_flag_underflow) >> 3 |
(xcpt & float_flag_overflow) >> 1 |
(xcpt & float_flag_divbyzero) << 1 |
(xcpt & float_flag_invalid) << 4;
}
inline char mips_ex_to_ieee(char xcpt)
{
return (xcpt & FP_INEXACT) << 5 |
(xcpt & FP_UNDERFLOW) << 3 |
(xcpt & FP_OVERFLOW) << 1 |
(xcpt & FP_DIV0) >> 1 |
(xcpt & FP_INVALID) >> 4;
}
inline void update_fcr31(void)
{
int tmp = ieee_ex_to_mips(get_float_exception_flags(&env->fp_status));
SET_FP_CAUSE(env->fcr31, tmp);
if (GET_FP_ENABLE(env->fcr31) & tmp)
do_raise_exception(EXCP_FPE);
else
UPDATE_FP_FLAGS(env->fcr31, tmp);
}
#define FLOAT_OP(name, p) void do_float_##name##_##p(void)
FLOAT_OP(cvtd, s)
{
set_float_exception_flags(0, &env->fp_status);
FDT2 = float32_to_float64(FST0, &env->fp_status);
update_fcr31();
}
FLOAT_OP(cvtd, w)
{
set_float_exception_flags(0, &env->fp_status);
FDT2 = int32_to_float64(WT0, &env->fp_status);
update_fcr31();
}
FLOAT_OP(cvtd, l)
{
set_float_exception_flags(0, &env->fp_status);
FDT2 = int64_to_float64(DT0, &env->fp_status);
update_fcr31();
}
FLOAT_OP(cvtl, d)
{
set_float_exception_flags(0, &env->fp_status);
DT2 = float64_to_int64(FDT0, &env->fp_status);
update_fcr31();
if (GET_FP_CAUSE(env->fcr31) & (FP_OVERFLOW | FP_INVALID))
DT2 = 0x7fffffffffffffffULL;
}
FLOAT_OP(cvtl, s)
{
set_float_exception_flags(0, &env->fp_status);
DT2 = float32_to_int64(FST0, &env->fp_status);
update_fcr31();
if (GET_FP_CAUSE(env->fcr31) & (FP_OVERFLOW | FP_INVALID))
DT2 = 0x7fffffffffffffffULL;
}
FLOAT_OP(cvtps, pw)
{
set_float_exception_flags(0, &env->fp_status);
FST2 = int32_to_float32(WT0, &env->fp_status);
FSTH2 = int32_to_float32(WTH0, &env->fp_status);
update_fcr31();
}
FLOAT_OP(cvtpw, ps)
{
set_float_exception_flags(0, &env->fp_status);
WT2 = float32_to_int32(FST0, &env->fp_status);
WTH2 = float32_to_int32(FSTH0, &env->fp_status);
update_fcr31();
if (GET_FP_CAUSE(env->fcr31) & (FP_OVERFLOW | FP_INVALID))
WT2 = 0x7fffffff;
}
FLOAT_OP(cvts, d)
{
set_float_exception_flags(0, &env->fp_status);
FST2 = float64_to_float32(FDT0, &env->fp_status);
update_fcr31();
}
FLOAT_OP(cvts, w)
{
set_float_exception_flags(0, &env->fp_status);
FST2 = int32_to_float32(WT0, &env->fp_status);
update_fcr31();
}
FLOAT_OP(cvts, l)
{
set_float_exception_flags(0, &env->fp_status);
FST2 = int64_to_float32(DT0, &env->fp_status);
update_fcr31();
}
FLOAT_OP(cvts, pl)
{
set_float_exception_flags(0, &env->fp_status);
WT2 = WT0;
update_fcr31();
}
FLOAT_OP(cvts, pu)
{
set_float_exception_flags(0, &env->fp_status);
WT2 = WTH0;
update_fcr31();
}
FLOAT_OP(cvtw, s)
{
set_float_exception_flags(0, &env->fp_status);
WT2 = float32_to_int32(FST0, &env->fp_status);
update_fcr31();
if (GET_FP_CAUSE(env->fcr31) & (FP_OVERFLOW | FP_INVALID))
WT2 = 0x7fffffff;
}
FLOAT_OP(cvtw, d)
{
set_float_exception_flags(0, &env->fp_status);
WT2 = float64_to_int32(FDT0, &env->fp_status);
update_fcr31();
if (GET_FP_CAUSE(env->fcr31) & (FP_OVERFLOW | FP_INVALID))
WT2 = 0x7fffffff;
}
FLOAT_OP(roundl, d)
{
set_float_rounding_mode(float_round_nearest_even, &env->fp_status);
DT2 = float64_round_to_int(FDT0, &env->fp_status);
RESTORE_ROUNDING_MODE;
update_fcr31();
if (GET_FP_CAUSE(env->fcr31) & (FP_OVERFLOW | FP_INVALID))
DT2 = 0x7fffffffffffffffULL;
}
FLOAT_OP(roundl, s)
{
set_float_rounding_mode(float_round_nearest_even, &env->fp_status);
DT2 = float32_round_to_int(FST0, &env->fp_status);
RESTORE_ROUNDING_MODE;
update_fcr31();
if (GET_FP_CAUSE(env->fcr31) & (FP_OVERFLOW | FP_INVALID))
DT2 = 0x7fffffffffffffffULL;
}
FLOAT_OP(roundw, d)
{
set_float_rounding_mode(float_round_nearest_even, &env->fp_status);
WT2 = float64_round_to_int(FDT0, &env->fp_status);
RESTORE_ROUNDING_MODE;
update_fcr31();
if (GET_FP_CAUSE(env->fcr31) & (FP_OVERFLOW | FP_INVALID))
WT2 = 0x7fffffff;
}
FLOAT_OP(roundw, s)
{
set_float_rounding_mode(float_round_nearest_even, &env->fp_status);
WT2 = float32_round_to_int(FST0, &env->fp_status);
RESTORE_ROUNDING_MODE;
update_fcr31();
if (GET_FP_CAUSE(env->fcr31) & (FP_OVERFLOW | FP_INVALID))
WT2 = 0x7fffffff;
}
FLOAT_OP(truncl, d)
{
DT2 = float64_to_int64_round_to_zero(FDT0, &env->fp_status);
update_fcr31();
if (GET_FP_CAUSE(env->fcr31) & (FP_OVERFLOW | FP_INVALID))
DT2 = 0x7fffffffffffffffULL;
}
FLOAT_OP(truncl, s)
{
DT2 = float32_to_int64_round_to_zero(FST0, &env->fp_status);
update_fcr31();
if (GET_FP_CAUSE(env->fcr31) & (FP_OVERFLOW | FP_INVALID))
DT2 = 0x7fffffffffffffffULL;
}
FLOAT_OP(truncw, d)
{
WT2 = float64_to_int32_round_to_zero(FDT0, &env->fp_status);
update_fcr31();
if (GET_FP_CAUSE(env->fcr31) & (FP_OVERFLOW | FP_INVALID))
WT2 = 0x7fffffff;
}
FLOAT_OP(truncw, s)
{
WT2 = float32_to_int32_round_to_zero(FST0, &env->fp_status);
update_fcr31();
if (GET_FP_CAUSE(env->fcr31) & (FP_OVERFLOW | FP_INVALID))
WT2 = 0x7fffffff;
}
FLOAT_OP(ceill, d)
{
set_float_rounding_mode(float_round_up, &env->fp_status);
DT2 = float64_round_to_int(FDT0, &env->fp_status);
RESTORE_ROUNDING_MODE;
update_fcr31();
if (GET_FP_CAUSE(env->fcr31) & (FP_OVERFLOW | FP_INVALID))
DT2 = 0x7fffffffffffffffULL;
}
FLOAT_OP(ceill, s)
{
set_float_rounding_mode(float_round_up, &env->fp_status);
DT2 = float32_round_to_int(FST0, &env->fp_status);
RESTORE_ROUNDING_MODE;
update_fcr31();
if (GET_FP_CAUSE(env->fcr31) & (FP_OVERFLOW | FP_INVALID))
DT2 = 0x7fffffffffffffffULL;
}
FLOAT_OP(ceilw, d)
{
set_float_rounding_mode(float_round_up, &env->fp_status);
WT2 = float64_round_to_int(FDT0, &env->fp_status);
RESTORE_ROUNDING_MODE;
update_fcr31();
if (GET_FP_CAUSE(env->fcr31) & (FP_OVERFLOW | FP_INVALID))
WT2 = 0x7fffffff;
}
FLOAT_OP(ceilw, s)
{
set_float_rounding_mode(float_round_up, &env->fp_status);
WT2 = float32_round_to_int(FST0, &env->fp_status);
RESTORE_ROUNDING_MODE;
update_fcr31();
if (GET_FP_CAUSE(env->fcr31) & (FP_OVERFLOW | FP_INVALID))
WT2 = 0x7fffffff;
}
FLOAT_OP(floorl, d)
{
set_float_rounding_mode(float_round_down, &env->fp_status);
DT2 = float64_round_to_int(FDT0, &env->fp_status);
RESTORE_ROUNDING_MODE;
update_fcr31();
if (GET_FP_CAUSE(env->fcr31) & (FP_OVERFLOW | FP_INVALID))
DT2 = 0x7fffffffffffffffULL;
}
FLOAT_OP(floorl, s)
{
set_float_rounding_mode(float_round_down, &env->fp_status);
DT2 = float32_round_to_int(FST0, &env->fp_status);
RESTORE_ROUNDING_MODE;
update_fcr31();
if (GET_FP_CAUSE(env->fcr31) & (FP_OVERFLOW | FP_INVALID))
DT2 = 0x7fffffffffffffffULL;
}
FLOAT_OP(floorw, d)
{
set_float_rounding_mode(float_round_down, &env->fp_status);
WT2 = float64_round_to_int(FDT0, &env->fp_status);
RESTORE_ROUNDING_MODE;
update_fcr31();
if (GET_FP_CAUSE(env->fcr31) & (FP_OVERFLOW | FP_INVALID))
WT2 = 0x7fffffff;
}
FLOAT_OP(floorw, s)
{
set_float_rounding_mode(float_round_down, &env->fp_status);
WT2 = float32_round_to_int(FST0, &env->fp_status);
RESTORE_ROUNDING_MODE;
update_fcr31();
if (GET_FP_CAUSE(env->fcr31) & (FP_OVERFLOW | FP_INVALID))
WT2 = 0x7fffffff;
}
/* unary operations, MIPS specific, s and d */
#define FLOAT_UNOP(name) \
FLOAT_OP(name, d) \
{ \
set_float_exception_flags(0, &env->fp_status); \
/* XXX: not implemented */ \
/* FDT2 = float64_ ## name (FDT0, &env->fp_status);*/ \
do_raise_exception(EXCP_RI); \
update_fcr31(); \
} \
FLOAT_OP(name, s) \
{ \
set_float_exception_flags(0, &env->fp_status); \
/* XXX: not implemented */ \
/* FST2 = float32_ ## name (FST0, &env->fp_status);*/ \
do_raise_exception(EXCP_RI); \
update_fcr31(); \
}
FLOAT_UNOP(rsqrt)
FLOAT_UNOP(recip)
#undef FLOAT_UNOP
/* unary operations, MIPS specific, s, d and ps */
#define FLOAT_UNOP(name) \
FLOAT_OP(name, d) \
{ \
set_float_exception_flags(0, &env->fp_status); \
/* XXX: not implemented */ \
/* FDT2 = float64_ ## name (FDT0, &env->fp_status);*/ \
do_raise_exception(EXCP_RI); \
update_fcr31(); \
} \
FLOAT_OP(name, s) \
{ \
set_float_exception_flags(0, &env->fp_status); \
/* XXX: not implemented */ \
/* FST2 = float32_ ## name (FST0, &env->fp_status);*/ \
do_raise_exception(EXCP_RI); \
update_fcr31(); \
} \
FLOAT_OP(name, ps) \
{ \
set_float_exception_flags(0, &env->fp_status); \
/* XXX: not implemented */ \
/* FST2 = float32_ ## name (FST0, &env->fp_status);*/ \
/* FSTH2 = float32_ ## name (FSTH0, &env->fp_status);*/ \
do_raise_exception(EXCP_RI); \
update_fcr31(); \
}
FLOAT_UNOP(rsqrt1)
FLOAT_UNOP(recip1)
#undef FLOAT_UNOP
/* binary operations */
#define FLOAT_BINOP(name) \
FLOAT_OP(name, d) \
{ \
set_float_exception_flags(0, &env->fp_status); \
FDT2 = float64_ ## name (FDT0, FDT1, &env->fp_status); \
update_fcr31(); \
if (GET_FP_CAUSE(env->fcr31) & FP_INVALID) \
FDT2 = 0x7ff7ffffffffffffULL; \
else if (GET_FP_CAUSE(env->fcr31) & FP_UNDERFLOW) { \
if ((env->fcr31 & 0x3) == 0) \
FDT2 &= 0x8000000000000000ULL; \
} \
} \
FLOAT_OP(name, s) \
{ \
set_float_exception_flags(0, &env->fp_status); \
FST2 = float32_ ## name (FST0, FST1, &env->fp_status); \
update_fcr31(); \
if (GET_FP_CAUSE(env->fcr31) & FP_INVALID) \
FST2 = 0x7fbfffff; \
else if (GET_FP_CAUSE(env->fcr31) & FP_UNDERFLOW) { \
if ((env->fcr31 & 0x3) == 0) \
FST2 &= 0x80000000ULL; \
} \
} \
FLOAT_OP(name, ps) \
{ \
set_float_exception_flags(0, &env->fp_status); \
FST2 = float32_ ## name (FST0, FST1, &env->fp_status); \
FSTH2 = float32_ ## name (FSTH0, FSTH1, &env->fp_status); \
update_fcr31(); \
if (GET_FP_CAUSE(env->fcr31) & FP_INVALID) { \
FST2 = 0x7fbfffff; \
FSTH2 = 0x7fbfffff; \
} else if (GET_FP_CAUSE(env->fcr31) & FP_UNDERFLOW) { \
if ((env->fcr31 & 0x3) == 0) { \
FST2 &= 0x80000000ULL; \
FSTH2 &= 0x80000000ULL; \
} \
} \
}
FLOAT_BINOP(add)
FLOAT_BINOP(sub)
FLOAT_BINOP(mul)
FLOAT_BINOP(div)
#undef FLOAT_BINOP
/* binary operations, MIPS specific */
#define FLOAT_BINOP(name) \
FLOAT_OP(name, d) \
{ \
set_float_exception_flags(0, &env->fp_status); \
/* XXX: not implemented */ \
/* FDT2 = float64_ ## name (FDT0, FDT1, &env->fp_status);*/ \
do_raise_exception(EXCP_RI); \
update_fcr31(); \
} \
FLOAT_OP(name, s) \
{ \
set_float_exception_flags(0, &env->fp_status); \
/* XXX: not implemented */ \
/* FST2 = float32_ ## name (FST0, FST1, &env->fp_status);*/ \
do_raise_exception(EXCP_RI); \
update_fcr31(); \
} \
FLOAT_OP(name, ps) \
{ \
set_float_exception_flags(0, &env->fp_status); \
/* XXX: not implemented */ \
/* FST2 = float32_ ## name (FST0, FST1, &env->fp_status);*/ \
/* FSTH2 = float32_ ## name (FSTH0, FSTH1, &env->fp_status);*/ \
do_raise_exception(EXCP_RI); \
update_fcr31(); \
}
FLOAT_BINOP(rsqrt2)
FLOAT_BINOP(recip2)
#undef FLOAT_BINOP
FLOAT_OP(addr, ps)
{
set_float_exception_flags(0, &env->fp_status);
FST2 = float32_add (FST0, FSTH0, &env->fp_status);
FSTH2 = float32_add (FST1, FSTH1, &env->fp_status);
update_fcr31();
}
FLOAT_OP(mulr, ps)
{
set_float_exception_flags(0, &env->fp_status);
FST2 = float32_mul (FST0, FSTH0, &env->fp_status);
FSTH2 = float32_mul (FST1, FSTH1, &env->fp_status);
update_fcr31();
}
#define FOP_COND_D(op, cond) \
void do_cmp_d_ ## op (long cc) \
{ \
int c = cond; \
update_fcr31(); \
if (c) \
SET_FP_COND(cc, env); \
else \
CLEAR_FP_COND(cc, env); \
} \
void do_cmpabs_d_ ## op (long cc) \
{ \
int c; \
FDT0 &= ~(1ULL << 63); \
FDT1 &= ~(1ULL << 63); \
c = cond; \
update_fcr31(); \
if (c) \
SET_FP_COND(cc, env); \
else \
CLEAR_FP_COND(cc, env); \
}
int float64_is_unordered(int sig, float64 a, float64 b STATUS_PARAM)
{
if (float64_is_signaling_nan(a) ||
float64_is_signaling_nan(b) ||
(sig && (float64_is_nan(a) || float64_is_nan(b)))) {
float_raise(float_flag_invalid, status);
return 1;
} else if (float64_is_nan(a) || float64_is_nan(b)) {
return 1;
} else {
return 0;
}
}
/* NOTE: the comma operator will make "cond" to eval to false,
* but float*_is_unordered() is still called. */
FOP_COND_D(f, (float64_is_unordered(0, FDT1, FDT0, &env->fp_status), 0))
FOP_COND_D(un, float64_is_unordered(0, FDT1, FDT0, &env->fp_status))
FOP_COND_D(eq, !float64_is_unordered(0, FDT1, FDT0, &env->fp_status) && float64_eq(FDT0, FDT1, &env->fp_status))
FOP_COND_D(ueq, float64_is_unordered(0, FDT1, FDT0, &env->fp_status) || float64_eq(FDT0, FDT1, &env->fp_status))
FOP_COND_D(olt, !float64_is_unordered(0, FDT1, FDT0, &env->fp_status) && float64_lt(FDT0, FDT1, &env->fp_status))
FOP_COND_D(ult, float64_is_unordered(0, FDT1, FDT0, &env->fp_status) || float64_lt(FDT0, FDT1, &env->fp_status))
FOP_COND_D(ole, !float64_is_unordered(0, FDT1, FDT0, &env->fp_status) && float64_le(FDT0, FDT1, &env->fp_status))
FOP_COND_D(ule, float64_is_unordered(0, FDT1, FDT0, &env->fp_status) || float64_le(FDT0, FDT1, &env->fp_status))
/* NOTE: the comma operator will make "cond" to eval to false,
* but float*_is_unordered() is still called. */
FOP_COND_D(sf, (float64_is_unordered(1, FDT1, FDT0, &env->fp_status), 0))
FOP_COND_D(ngle,float64_is_unordered(1, FDT1, FDT0, &env->fp_status))
FOP_COND_D(seq, !float64_is_unordered(1, FDT1, FDT0, &env->fp_status) && float64_eq(FDT0, FDT1, &env->fp_status))
FOP_COND_D(ngl, float64_is_unordered(1, FDT1, FDT0, &env->fp_status) || float64_eq(FDT0, FDT1, &env->fp_status))
FOP_COND_D(lt, !float64_is_unordered(1, FDT1, FDT0, &env->fp_status) && float64_lt(FDT0, FDT1, &env->fp_status))
FOP_COND_D(nge, float64_is_unordered(1, FDT1, FDT0, &env->fp_status) || float64_lt(FDT0, FDT1, &env->fp_status))
FOP_COND_D(le, !float64_is_unordered(1, FDT1, FDT0, &env->fp_status) && float64_le(FDT0, FDT1, &env->fp_status))
FOP_COND_D(ngt, float64_is_unordered(1, FDT1, FDT0, &env->fp_status) || float64_le(FDT0, FDT1, &env->fp_status))
#define FOP_COND_S(op, cond) \
void do_cmp_s_ ## op (long cc) \
{ \
int c = cond; \
update_fcr31(); \
if (c) \
SET_FP_COND(cc, env); \
else \
CLEAR_FP_COND(cc, env); \
} \
void do_cmpabs_s_ ## op (long cc) \
{ \
int c; \
FST0 &= ~(1 << 31); \
FST1 &= ~(1 << 31); \
c = cond; \
update_fcr31(); \
if (c) \
SET_FP_COND(cc, env); \
else \
CLEAR_FP_COND(cc, env); \
}
flag float32_is_unordered(int sig, float32 a, float32 b STATUS_PARAM)
{
if (float32_is_signaling_nan(a) ||
float32_is_signaling_nan(b) ||
(sig && (float32_is_nan(a) || float32_is_nan(b)))) {
float_raise(float_flag_invalid, status);
return 1;
} else if (float32_is_nan(a) || float32_is_nan(b)) {
return 1;
} else {
return 0;
}
}
/* NOTE: the comma operator will make "cond" to eval to false,
* but float*_is_unordered() is still called. */
FOP_COND_S(f, (float32_is_unordered(0, FST1, FST0, &env->fp_status), 0))
FOP_COND_S(un, float32_is_unordered(0, FST1, FST0, &env->fp_status))
FOP_COND_S(eq, !float32_is_unordered(0, FST1, FST0, &env->fp_status) && float32_eq(FST0, FST1, &env->fp_status))
FOP_COND_S(ueq, float32_is_unordered(0, FST1, FST0, &env->fp_status) || float32_eq(FST0, FST1, &env->fp_status))
FOP_COND_S(olt, !float32_is_unordered(0, FST1, FST0, &env->fp_status) && float32_lt(FST0, FST1, &env->fp_status))
FOP_COND_S(ult, float32_is_unordered(0, FST1, FST0, &env->fp_status) || float32_lt(FST0, FST1, &env->fp_status))
FOP_COND_S(ole, !float32_is_unordered(0, FST1, FST0, &env->fp_status) && float32_le(FST0, FST1, &env->fp_status))
FOP_COND_S(ule, float32_is_unordered(0, FST1, FST0, &env->fp_status) || float32_le(FST0, FST1, &env->fp_status))
/* NOTE: the comma operator will make "cond" to eval to false,
* but float*_is_unordered() is still called. */
FOP_COND_S(sf, (float32_is_unordered(1, FST1, FST0, &env->fp_status), 0))
FOP_COND_S(ngle,float32_is_unordered(1, FST1, FST0, &env->fp_status))
FOP_COND_S(seq, !float32_is_unordered(1, FST1, FST0, &env->fp_status) && float32_eq(FST0, FST1, &env->fp_status))
FOP_COND_S(ngl, float32_is_unordered(1, FST1, FST0, &env->fp_status) || float32_eq(FST0, FST1, &env->fp_status))
FOP_COND_S(lt, !float32_is_unordered(1, FST1, FST0, &env->fp_status) && float32_lt(FST0, FST1, &env->fp_status))
FOP_COND_S(nge, float32_is_unordered(1, FST1, FST0, &env->fp_status) || float32_lt(FST0, FST1, &env->fp_status))
FOP_COND_S(le, !float32_is_unordered(1, FST1, FST0, &env->fp_status) && float32_le(FST0, FST1, &env->fp_status))
FOP_COND_S(ngt, float32_is_unordered(1, FST1, FST0, &env->fp_status) || float32_le(FST0, FST1, &env->fp_status))
#define FOP_COND_PS(op, condl, condh) \
void do_cmp_ps_ ## op (long cc) \
{ \
int cl = condl; \
int ch = condh; \
update_fcr31(); \
if (cl) \
SET_FP_COND(cc, env); \
else \
CLEAR_FP_COND(cc, env); \
if (ch) \
SET_FP_COND(cc + 1, env); \
else \
CLEAR_FP_COND(cc + 1, env); \
} \
void do_cmpabs_ps_ ## op (long cc) \
{ \
int cl, ch; \
FST0 &= ~(1 << 31); \
FSTH0 &= ~(1 << 31); \
FST1 &= ~(1 << 31); \
FSTH1 &= ~(1 << 31); \
cl = condl; \
ch = condh; \
update_fcr31(); \
if (cl) \
SET_FP_COND(cc, env); \
else \
CLEAR_FP_COND(cc, env); \
if (ch) \
SET_FP_COND(cc + 1, env); \
else \
CLEAR_FP_COND(cc + 1, env); \
}
/* NOTE: the comma operator will make "cond" to eval to false,
* but float*_is_unordered() is still called. */
FOP_COND_PS(f, (float32_is_unordered(0, FST1, FST0, &env->fp_status), 0),
(float32_is_unordered(0, FSTH1, FSTH0, &env->fp_status), 0))
FOP_COND_PS(un, float32_is_unordered(0, FST1, FST0, &env->fp_status),
float32_is_unordered(0, FSTH1, FSTH0, &env->fp_status))
FOP_COND_PS(eq, !float32_is_unordered(0, FST1, FST0, &env->fp_status) && float32_eq(FST0, FST1, &env->fp_status),
!float32_is_unordered(0, FSTH1, FSTH0, &env->fp_status) && float32_eq(FSTH0, FSTH1, &env->fp_status))
FOP_COND_PS(ueq, float32_is_unordered(0, FST1, FST0, &env->fp_status) || float32_eq(FST0, FST1, &env->fp_status),
float32_is_unordered(0, FSTH1, FSTH0, &env->fp_status) || float32_eq(FSTH0, FSTH1, &env->fp_status))
FOP_COND_PS(olt, !float32_is_unordered(0, FST1, FST0, &env->fp_status) && float32_lt(FST0, FST1, &env->fp_status),
!float32_is_unordered(0, FSTH1, FSTH0, &env->fp_status) && float32_lt(FSTH0, FSTH1, &env->fp_status))
FOP_COND_PS(ult, float32_is_unordered(0, FST1, FST0, &env->fp_status) || float32_lt(FST0, FST1, &env->fp_status),
float32_is_unordered(0, FSTH1, FSTH0, &env->fp_status) || float32_lt(FSTH0, FSTH1, &env->fp_status))
FOP_COND_PS(ole, !float32_is_unordered(0, FST1, FST0, &env->fp_status) && float32_le(FST0, FST1, &env->fp_status),
!float32_is_unordered(0, FSTH1, FSTH0, &env->fp_status) && float32_le(FSTH0, FSTH1, &env->fp_status))
FOP_COND_PS(ule, float32_is_unordered(0, FST1, FST0, &env->fp_status) || float32_le(FST0, FST1, &env->fp_status),
float32_is_unordered(0, FSTH1, FSTH0, &env->fp_status) || float32_le(FSTH0, FSTH1, &env->fp_status))
/* NOTE: the comma operator will make "cond" to eval to false,
* but float*_is_unordered() is still called. */
FOP_COND_PS(sf, (float32_is_unordered(1, FST1, FST0, &env->fp_status), 0),
(float32_is_unordered(1, FSTH1, FSTH0, &env->fp_status), 0))
FOP_COND_PS(ngle,float32_is_unordered(1, FST1, FST0, &env->fp_status),
float32_is_unordered(1, FSTH1, FSTH0, &env->fp_status))
FOP_COND_PS(seq, !float32_is_unordered(1, FST1, FST0, &env->fp_status) && float32_eq(FST0, FST1, &env->fp_status),
!float32_is_unordered(1, FSTH1, FSTH0, &env->fp_status) && float32_eq(FSTH0, FSTH1, &env->fp_status))
FOP_COND_PS(ngl, float32_is_unordered(1, FST1, FST0, &env->fp_status) || float32_eq(FST0, FST1, &env->fp_status),
float32_is_unordered(1, FSTH1, FSTH0, &env->fp_status) || float32_eq(FSTH0, FSTH1, &env->fp_status))
FOP_COND_PS(lt, !float32_is_unordered(1, FST1, FST0, &env->fp_status) && float32_lt(FST0, FST1, &env->fp_status),
!float32_is_unordered(1, FSTH1, FSTH0, &env->fp_status) && float32_lt(FSTH0, FSTH1, &env->fp_status))
FOP_COND_PS(nge, float32_is_unordered(1, FST1, FST0, &env->fp_status) || float32_lt(FST0, FST1, &env->fp_status),
float32_is_unordered(1, FSTH1, FSTH0, &env->fp_status) || float32_lt(FSTH0, FSTH1, &env->fp_status))
FOP_COND_PS(le, !float32_is_unordered(1, FST1, FST0, &env->fp_status) && float32_le(FST0, FST1, &env->fp_status),
!float32_is_unordered(1, FSTH1, FSTH0, &env->fp_status) && float32_le(FSTH0, FSTH1, &env->fp_status))
FOP_COND_PS(ngt, float32_is_unordered(1, FST1, FST0, &env->fp_status) || float32_le(FST0, FST1, &env->fp_status),
float32_is_unordered(1, FSTH1, FSTH0, &env->fp_status) || float32_le(FSTH0, FSTH1, &env->fp_status))
Reference in New Issue View Git Blame Copy Permalink