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| author |   blueswir1 <blueswir1@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-09-03 17:32:10 +0000 |
|---|---|---|
| committer | blueswir1 <blueswir1@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-09-03 17:32:10 +0000 |
| commit | e83ce550688af60cd5f5f78db4071eaa4858065f (patch) | |
| tree | 5bf62b37184da61e00af55e901c6c5b6fead7b89 /target-sparc | |
| parent | ETRAX-FS: Add support for DMA channel resets, needed for recent linux kernels. (diff) | |
| download | qemu-kvm-e83ce550688af60cd5f5f78db4071eaa4858065f.tar.gz qemu-kvm-e83ce550688af60cd5f5f78db4071eaa4858065f.tar.bz2 qemu-kvm-e83ce550688af60cd5f5f78db4071eaa4858065f.zip | |
Implement no-fault loads
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5148 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'target-sparc')
| -rw-r--r-- | target-sparc/op_helper.c | 44 |
1 files changed, 36 insertions, 8 deletions
diff --git a/target-sparc/op_helper.c b/target-sparc/op_helper.c index 47cd998ac..75020a92f 100644 --- a/target-sparc/op_helper.c +++ b/target-sparc/op_helper.c @@ -1402,10 +1402,17 @@ uint64_t helper_ld_asi(target_ulong addr, int asi, int size, int sign) address_mask(env, &addr); switch (asi) { - case 0x80: // Primary case 0x82: // Primary no-fault - case 0x88: // Primary LE case 0x8a: // Primary no-fault LE + if (page_check_range(addr, size, PAGE_READ) == -1) { +#ifdef DEBUG_ASI + dump_asi("read ", last_addr, asi, size, ret); +#endif + return 0; + } + // Fall through + case 0x80: // Primary + case 0x88: // Primary LE { switch(size) { case 1: @@ -1424,10 +1431,17 @@ uint64_t helper_ld_asi(target_ulong addr, int asi, int size, int sign) } } break; - case 0x81: // Secondary case 0x83: // Secondary no-fault - case 0x89: // Secondary LE case 0x8b: // Secondary no-fault LE + if (page_check_range(addr, size, PAGE_READ) == -1) { +#ifdef DEBUG_ASI + dump_asi("read ", last_addr, asi, size, ret); +#endif + return 0; + } + // Fall through + case 0x81: // Secondary + case 0x89: // Secondary LE // XXX break; default: @@ -1564,12 +1578,19 @@ uint64_t helper_ld_asi(target_ulong addr, int asi, int size, int sign) helper_check_align(addr, size - 1); switch (asi) { + case 0x82: // Primary no-fault + case 0x8a: // Primary no-fault LE + if (cpu_get_phys_page_debug(env, addr) == -1ULL) { +#ifdef DEBUG_ASI + dump_asi("read ", last_addr, asi, size, ret); +#endif + return 0; + } + // Fall through case 0x10: // As if user primary case 0x18: // As if user primary LE case 0x80: // Primary - case 0x82: // Primary no-fault case 0x88: // Primary LE - case 0x8a: // Primary no-fault LE if ((asi & 0x80) && (env->pstate & PS_PRIV)) { if ((env->def->features & CPU_FEATURE_HYPV) && env->hpstate & HS_PRIV) { @@ -1650,15 +1671,22 @@ uint64_t helper_ld_asi(target_ulong addr, int asi, int size, int sign) // Only ldda allowed raise_exception(TT_ILL_INSN); return 0; + case 0x83: // Secondary no-fault + case 0x8b: // Secondary no-fault LE + if (cpu_get_phys_page_debug(env, addr) == -1ULL) { +#ifdef DEBUG_ASI + dump_asi("read ", last_addr, asi, size, ret); +#endif + return 0; + } + // Fall through case 0x04: // Nucleus case 0x0c: // Nucleus Little Endian (LE) case 0x11: // As if user secondary case 0x19: // As if user secondary LE case 0x4a: // UPA config case 0x81: // Secondary - case 0x83: // Secondary no-fault case 0x89: // Secondary LE - case 0x8b: // Secondary no-fault LE // XXX break; case 0x45: // LSU |