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MIPS unaligned accesses exceptions (Daniel Jacobowitz) 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1688 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2005-12-05 19:57:57 +00:00
parent 2d7272a588
commit a64d4718f1
1 changed files with 27 additions and 1 deletions
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28
softmmu_template.h
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@ -97,15 +97,28 @@ DATA_TYPE REGPARM(1) glue(glue(__ld, SUFFIX), MMUSUFFIX)(target_ulong addr,
/* slow unaligned access (it spans two pages or IO) */
do_unaligned_access:
retaddr = GETPC();
#ifdef ALIGNED_ONLY
do_unaligned_access(addr, READ_ACCESS_TYPE, is_user, retaddr);
#endif
res = glue(glue(slow_ld, SUFFIX), MMUSUFFIX)(addr,
is_user, retaddr);
} else {
/* unaligned access in the same page */
/* unaligned/aligned access in the same page */
#ifdef ALIGNED_ONLY
if ((addr & (DATA_SIZE - 1)) != 0) {
retaddr = GETPC();
do_unaligned_access(addr, READ_ACCESS_TYPE, is_user, retaddr);
}
#endif
res = glue(glue(ld, USUFFIX), _raw)((uint8_t *)(long)physaddr);
}
} else {
/* the page is not in the TLB : fill it */
retaddr = GETPC();
#ifdef ALIGNED_ONLY
if ((addr & (DATA_SIZE - 1)) != 0)
do_unaligned_access(addr, READ_ACCESS_TYPE, is_user, retaddr);
#endif
tlb_fill(addr, READ_ACCESS_TYPE, is_user, retaddr);
goto redo;
}
@ -213,15 +226,28 @@ void REGPARM(2) glue(glue(__st, SUFFIX), MMUSUFFIX)(target_ulong addr,
} else if (((addr & ~TARGET_PAGE_MASK) + DATA_SIZE - 1) >= TARGET_PAGE_SIZE) {
do_unaligned_access:
retaddr = GETPC();
#ifdef ALIGNED_ONLY
do_unaligned_access(addr, 1, is_user, retaddr);
#endif
glue(glue(slow_st, SUFFIX), MMUSUFFIX)(addr, val,
is_user, retaddr);
} else {
/* aligned/unaligned access in the same page */
#ifdef ALIGNED_ONLY
if ((addr & (DATA_SIZE - 1)) != 0) {
retaddr = GETPC();
do_unaligned_access(addr, 1, is_user, retaddr);
}
#endif
glue(glue(st, SUFFIX), _raw)((uint8_t *)(long)physaddr, val);
}
} else {
/* the page is not in the TLB : fill it */
retaddr = GETPC();
#ifdef ALIGNED_ONLY
if ((addr & (DATA_SIZE - 1)) != 0)
do_unaligned_access(addr, 1, is_user, retaddr);
#endif
tlb_fill(addr, 1, is_user, retaddr);
goto redo;
}