1 2008-01-12 Mike Kronenberg <mike.kronenberg@kronenberg.org>
3 * cpu-exec.c: Fix for QEMU 0.9.1.
5 2005-11-11 Gwenole Beauchesne <gbeauchesne@mandriva.com>
7 * Globaaly save %ebx, %esi, %edi on entry to generated
8 function. This avoids some register spills in synthetic opcodes.
9 NOTE: this also easily fixes gcc4 compiled qemu-system-x86_64 on x86.
11 --- qemu-0.7.2/cpu-exec.c.gcc4-opts 2005-09-04 19:11:31.000000000 +0200
12 +++ qemu-0.7.2/cpu-exec.c 2005-11-11 17:40:47.000000000 +0100
13 @@ -561,6 +561,15 @@ int cpu_exec(CPUState *env1)
16 : "r1", "r2", "r3", "r8", "r9", "r10", "r12", "r14");
17 +#elif defined(TARGET_X86_64) && defined(__i386__)
18 + asm volatile ("push %%ebx\n"
25 + : : "r" (gen_func) : "ebx", "esi", "edi");
29 --- qemu-0.7.2/Makefile.target.gcc4-opts 2005-11-11 16:26:33.000000000 +0100
30 +++ qemu-0.7.2/Makefile.target 2005-11-11 17:59:56.000000000 +0100
31 @@ -65,6 +65,10 @@ OP_CFLAGS+= -falign-functions=0 -fno-gcs
33 OP_CFLAGS+= -malign-functions=0
35 +ifeq ($(TARGET_ARCH), x86_64)
36 +# XXX globally save %ebx, %esi, %edi on entry to generated function
37 +OP_CFLAGS+= -fcall-used-ebx -fcall-used-esi -fcall-used-edi