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Commit | Line | Data |
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891bbdf5 AM |
1 | 2005-11-11 Gwenole Beauchesne <gbeauchesne@mandriva.com> |
2 | ||
3 | * Globaaly save %ebx, %esi, %edi on entry to generated | |
4 | function. This avoids some register spills in synthetic opcodes. | |
5 | NOTE: this also easily fixes gcc4 compiled qemu-system-x86_64 on x86. | |
6 | ||
7 | --- qemu-0.7.2/cpu-exec.c.gcc4-opts 2005-09-04 19:11:31.000000000 +0200 | |
8 | +++ qemu-0.7.2/cpu-exec.c 2005-11-11 17:40:47.000000000 +0100 | |
9 | @@ -561,6 +561,15 @@ int cpu_exec(CPUState *env1) | |
10 | : /* no outputs */ | |
11 | : "r" (gen_func) | |
12 | : "r1", "r2", "r3", "r8", "r9", "r10", "r12", "r14"); | |
13 | +#elif defined(TARGET_X86_64) && defined(__i386__) | |
14 | + asm volatile ("push %%ebx\n" | |
15 | + "push %%esi\n" | |
16 | + "push %%edi\n" | |
17 | + "call *%0\n" | |
18 | + "pop %%edi\n" | |
19 | + "pop %%esi\n" | |
20 | + "pop %%ebx\n" | |
21 | + : : "r" (gen_func) : "ebx", "esi", "edi"); | |
22 | #elif defined(TARGET_I386) && defined(USE_CODE_COPY) | |
23 | { | |
24 | if (!(tb->cflags & CF_CODE_COPY)) { | |
25 | --- qemu-0.7.2/Makefile.target.gcc4-opts 2005-11-11 16:26:33.000000000 +0100 | |
26 | +++ qemu-0.7.2/Makefile.target 2005-11-11 17:59:56.000000000 +0100 | |
27 | @@ -65,6 +65,10 @@ OP_CFLAGS+= -falign-functions=0 -fno-gcs | |
28 | else | |
29 | OP_CFLAGS+= -malign-functions=0 | |
30 | endif | |
31 | +ifeq ($(TARGET_ARCH), x86_64) | |
32 | +# XXX globally save %ebx, %esi, %edi on entry to generated function | |
33 | +OP_CFLAGS+= -fcall-used-ebx -fcall-used-esi -fcall-used-edi | |
34 | +endif | |
35 | ||
36 | ifdef TARGET_GPROF | |
37 | USE_I386_LD=y |