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assembly soft MMU defines on i386

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@524 c046a42c-6fe2-441c-8c8c-71466251a162
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bellard 2004-01-04 18:15:29 +00:00
parent 8351d2d481
commit e16c53fabb
1 changed files with 150 additions and 0 deletions
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150
softmmu_header.h
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@ -74,6 +74,152 @@ DATA_TYPE REGPARM(1) glue(glue(__ld, SUFFIX), MMUSUFFIX)(unsigned long addr,
int is_user);
void REGPARM(2) glue(glue(__st, SUFFIX), MMUSUFFIX)(unsigned long addr, DATA_TYPE v, int is_user);
#if (DATA_SIZE <= 4) && defined(__i386__) && (ACCESS_TYPE <= 1) && defined(ASM_SOFTMMU)
static inline RES_TYPE glue(glue(ld, USUFFIX), MEMSUFFIX)(void *ptr)
{
int res;
asm volatile ("movl %1, %%edx\n"
"movl %1, %%eax\n"
"shrl %3, %%edx\n"
"andl %4, %%eax\n"
"andl %2, %%edx\n"
"leal %5(%%edx, %%ebp), %%edx\n"
"cmpl (%%edx), %%eax\n"
"movl %1, %%eax\n"
"je 1f\n"
"pushl %6\n"
"call %7\n"
"popl %%edx\n"
"movl %%eax, %0\n"
"jmp 2f\n"
"1:\n"
"addl 4(%%edx), %%eax\n"
#if DATA_SIZE == 1
"movzbl (%%eax), %0\n"
#elif DATA_SIZE == 2
"movzwl (%%eax), %0\n"
#elif DATA_SIZE == 4
"movl (%%eax), %0\n"
#else
#error unsupported size
#endif
"2:\n"
: "=r" (res)
: "r" (ptr),
"i" ((CPU_TLB_SIZE - 1) << 3),
"i" (TARGET_PAGE_BITS - 3),
"i" (TARGET_PAGE_MASK | (DATA_SIZE - 1)),
"m" (*(uint32_t *)offsetof(CPUState, tlb_read[CPU_MEM_INDEX][0].address)),
"i" (CPU_MEM_INDEX),
"m" (*(uint8_t *)&glue(glue(__ld, SUFFIX), MMUSUFFIX))
: "%eax", "%ecx", "%edx", "memory", "cc");
return res;
}
#if DATA_SIZE <= 2
static inline int glue(glue(lds, SUFFIX), MEMSUFFIX)(void *ptr)
{
int res;
asm volatile ("movl %1, %%edx\n"
"movl %1, %%eax\n"
"shrl %3, %%edx\n"
"andl %4, %%eax\n"
"andl %2, %%edx\n"
"leal %5(%%edx, %%ebp), %%edx\n"
"cmpl (%%edx), %%eax\n"
"movl %1, %%eax\n"
"je 1f\n"
"pushl %6\n"
"call %7\n"
"popl %%edx\n"
#if DATA_SIZE == 1
"movsbl %%al, %0\n"
#elif DATA_SIZE == 2
"movswl %%ax, %0\n"
#else
#error unsupported size
#endif
"jmp 2f\n"
"1:\n"
"addl 4(%%edx), %%eax\n"
#if DATA_SIZE == 1
"movsbl (%%eax), %0\n"
#elif DATA_SIZE == 2
"movswl (%%eax), %0\n"
#else
#error unsupported size
#endif
"2:\n"
: "=r" (res)
: "r" (ptr),
"i" ((CPU_TLB_SIZE - 1) << 3),
"i" (TARGET_PAGE_BITS - 3),
"i" (TARGET_PAGE_MASK | (DATA_SIZE - 1)),
"m" (*(uint32_t *)offsetof(CPUState, tlb_read[CPU_MEM_INDEX][0].address)),
"i" (CPU_MEM_INDEX),
"m" (*(uint8_t *)&glue(glue(__ld, SUFFIX), MMUSUFFIX))
: "%eax", "%ecx", "%edx", "memory", "cc");
return res;
}
#endif
static inline void glue(glue(st, SUFFIX), MEMSUFFIX)(void *ptr, RES_TYPE v)
{
asm volatile ("movl %0, %%edx\n"
"movl %0, %%eax\n"
"shrl %3, %%edx\n"
"andl %4, %%eax\n"
"andl %2, %%edx\n"
"leal %5(%%edx, %%ebp), %%edx\n"
"cmpl (%%edx), %%eax\n"
"movl %0, %%eax\n"
"je 1f\n"
#if DATA_SIZE == 1
"movzbl %b1, %%edx\n"
#elif DATA_SIZE == 2
"movzwl %w1, %%edx\n"
#elif DATA_SIZE == 4
"movl %1, %%edx\n"
#else
#error unsupported size
#endif
"pushl %6\n"
"call %7\n"
"popl %%eax\n"
"jmp 2f\n"
"1:\n"
"addl 4(%%edx), %%eax\n"
#if DATA_SIZE == 1
"movb %b1, (%%eax)\n"
#elif DATA_SIZE == 2
"movw %w1, (%%eax)\n"
#elif DATA_SIZE == 4
"movl %1, (%%eax)\n"
#else
#error unsupported size
#endif
"2:\n"
:
: "r" (ptr),
/* NOTE: 'q' would be needed as constraint, but we could not use it
with T1 ! */
"r" (v),
"i" ((CPU_TLB_SIZE - 1) << 3),
"i" (TARGET_PAGE_BITS - 3),
"i" (TARGET_PAGE_MASK | (DATA_SIZE - 1)),
"m" (*(uint32_t *)offsetof(CPUState, tlb_write[CPU_MEM_INDEX][0].address)),
"i" (CPU_MEM_INDEX),
"m" (*(uint8_t *)&glue(glue(__st, SUFFIX), MMUSUFFIX))
: "%eax", "%ecx", "%edx", "memory", "cc");
}
#else
/* generic load/store macros */
static inline RES_TYPE glue(glue(ld, USUFFIX), MEMSUFFIX)(void *ptr)
{
int index;
@ -115,6 +261,8 @@ static inline int glue(glue(lds, SUFFIX), MEMSUFFIX)(void *ptr)
}
#endif
/* generic store macro */
static inline void glue(glue(st, SUFFIX), MEMSUFFIX)(void *ptr, RES_TYPE v)
{
int index;
@ -133,6 +281,8 @@ static inline void glue(glue(st, SUFFIX), MEMSUFFIX)(void *ptr, RES_TYPE v)
}
}
#endif
#undef RES_TYPE
#undef DATA_TYPE
#undef DATA_STYPE