diff options
| author | bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162> | 2004-02-25 23:19:55 +0000 |
|---|---|---|
| committer | bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162> | 2004-02-25 23:19:55 +0000 |
| commit | 97eb5b14dcfad346fa79e95e0e020aced9973311 (patch) | |
| tree | 8dfb51754bd17436c0c2f1a0edba843ea76c89c2 /cpu-exec.c | |
| parent | 7eee2a509a9a777aafd0c2efb14b837b83a8df9c (diff) | |
| download | qemu-97eb5b14dcfad346fa79e95e0e020aced9973311.zip | |
native FPU support in code copy mode
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@643 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'cpu-exec.c')
| -rw-r--r-- | cpu-exec.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/cpu-exec.c b/cpu-exec.c index 44a0f73a58..c6f52f2780 100644 --- a/cpu-exec.c +++ b/cpu-exec.c @@ -380,6 +380,11 @@ int cpu_exec(CPUState *env1) ) { spin_lock(&tb_lock); tb_add_jump((TranslationBlock *)(T0 & ~3), T0 & 3, tb); +#if defined(USE_CODE_COPY) + /* propagates the FP use info */ + ((TranslationBlock *)(T0 & ~3))->cflags |= + (tb->cflags & CF_FP_USED); +#endif spin_unlock(&tb_lock); } tc_ptr = tb->tc_ptr; @@ -402,8 +407,14 @@ int cpu_exec(CPUState *env1) #elif defined(TARGET_I386) && defined(USE_CODE_COPY) { if (!(tb->cflags & CF_CODE_COPY)) { + if ((tb->cflags & CF_FP_USED) && env->native_fp_regs) { + save_native_fp_state(env); + } gen_func(); } else { + if ((tb->cflags & CF_FP_USED) && !env->native_fp_regs) { + restore_native_fp_state(env); + } /* we work with native eflags */ CC_SRC = cc_table[CC_OP].compute_all(); CC_OP = CC_OP_EFLAGS; @@ -487,6 +498,11 @@ int cpu_exec(CPUState *env1) #if defined(TARGET_I386) +#if defined(USE_CODE_COPY) + if (env->native_fp_regs) { + save_native_fp_state(env); + } +#endif /* restore flags in standard format */ env->eflags = env->eflags | cc_table[CC_OP].compute_all() | (DF & DF_MASK); @@ -747,7 +763,7 @@ int cpu_signal_handler(int host_signum, struct siginfo *info, struct ucontext *uc = puc; unsigned long pc; int trapno; - + #ifndef REG_EIP /* for glibc 2.1 */ #define REG_EIP EIP |