Revision 6e35d524
| b/target-ppc/helper.h | ||
|---|---|---|
| 58 | 58 |
#endif |
| 59 | 59 |
DEF_HELPER_2(compute_fprf, i32, i64, i32) |
| 60 | 60 |
DEF_HELPER_2(store_fpscr, void, i64, i32) |
| 61 |
DEF_HELPER_1(fpscr_clrbit, void, i32) |
|
| 61 | 62 |
DEF_HELPER_1(fpscr_setbit, void, i32) |
| 62 | 63 |
DEF_HELPER_1(float64_to_float32, i32, i64) |
| 63 | 64 |
DEF_HELPER_1(float32_to_float64, i64, i32) |
| b/target-ppc/op_helper.c | ||
|---|---|---|
| 843 | 843 |
set_float_rounding_mode(rnd_type, &env->fp_status); |
| 844 | 844 |
} |
| 845 | 845 |
|
| 846 |
void helper_fpscr_clrbit (uint32_t bit) |
|
| 847 |
{
|
|
| 848 |
int prev; |
|
| 849 |
|
|
| 850 |
prev = (env->fpscr >> bit) & 1; |
|
| 851 |
env->fpscr &= ~(1 << bit); |
|
| 852 |
if (prev == 1) {
|
|
| 853 |
switch (bit) {
|
|
| 854 |
case FPSCR_RN1: |
|
| 855 |
case FPSCR_RN: |
|
| 856 |
fpscr_set_rounding_mode(); |
|
| 857 |
break; |
|
| 858 |
default: |
|
| 859 |
break; |
|
| 860 |
} |
|
| 861 |
} |
|
| 862 |
} |
|
| 863 |
|
|
| 846 | 864 |
void helper_fpscr_setbit (uint32_t bit) |
| 847 | 865 |
{
|
| 848 | 866 |
int prev; |
| b/target-ppc/translate.c | ||
|---|---|---|
| 2355 | 2355 |
gen_exception(ctx, POWERPC_EXCP_FPU); |
| 2356 | 2356 |
return; |
| 2357 | 2357 |
} |
| 2358 |
crb = 32 - (crbD(ctx->opcode) >> 2);
|
|
| 2358 |
crb = 31 - crbD(ctx->opcode);
|
|
| 2359 | 2359 |
gen_optimize_fprf(); |
| 2360 | 2360 |
gen_reset_fpstatus(); |
| 2361 |
if (likely(crb != 30 && crb != 29)) |
|
| 2362 |
tcg_gen_andi_i32(cpu_fpscr, cpu_fpscr, ~(1 << crb)); |
|
| 2361 |
if (likely(crb != FPSCR_FEX && crb != FPSCR_VX)) {
|
|
| 2362 |
TCGv_i32 t0 = tcg_const_i32(crb); |
|
| 2363 |
gen_helper_fpscr_clrbit(t0); |
|
| 2364 |
tcg_temp_free_i32(t0); |
|
| 2365 |
} |
|
| 2363 | 2366 |
if (unlikely(Rc(ctx->opcode) != 0)) {
|
| 2364 | 2367 |
tcg_gen_shri_i32(cpu_crf[1], cpu_fpscr, FPSCR_OX); |
| 2365 | 2368 |
} |
| ... | ... | |
| 2374 | 2377 |
gen_exception(ctx, POWERPC_EXCP_FPU); |
| 2375 | 2378 |
return; |
| 2376 | 2379 |
} |
| 2377 |
crb = 32 - (crbD(ctx->opcode) >> 2);
|
|
| 2380 |
crb = 31 - crbD(ctx->opcode);
|
|
| 2378 | 2381 |
gen_optimize_fprf(); |
| 2379 | 2382 |
gen_reset_fpstatus(); |
| 2380 | 2383 |
/* XXX: we pretend we can only do IEEE floating-point computations */ |
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