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提交 8f793433 编写于 作者: J j_mayer
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Enable PowerPC 64 MMU model and exceptions. 

Cleanups in MMU exceptions generation.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3319 c046a42c-6fe2-441c-8c8c-71466251a162
上级 0387d928
隐藏空白更改
内联 并排
Showing with 71 addition and 68 deletion
target-ppc/helper.c
浏览文件 @ 8f793433
......@@ -45,10 +45,10 @@ int cpu_ppc_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
if (rw == 2) {
exception = POWERPC_EXCP_ISI;
error_code = 0;
error_code = 0x40000000;
} else {
exception = POWERPC_EXCP_DSI;
error_code = 0;
error_code = 0x40000000;
if (rw)
error_code |= 0x02000000;
env->spr[SPR_DAR] = address;
......@@ -1227,7 +1227,6 @@ int cpu_ppc_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
int is_user, int is_softmmu)
{
mmu_ctx_t ctx;
int exception = 0, error_code = 0;
int access_type;
int ret = 0;
......@@ -1253,40 +1252,34 @@ int cpu_ppc_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
cpu_dump_state(env, logfile, fprintf, 0);
#endif
if (access_type == ACCESS_CODE) {
exception = POWERPC_EXCP_ISI;
switch (ret) {
case -1:
/* No matches in page tables or TLB */
switch (env->mmu_model) {
case POWERPC_MMU_SOFT_6xx:
exception = POWERPC_EXCP_IFTLB;
env->exception_index = POWERPC_EXCP_IFTLB;
env->error_code = 1 << 18;
env->spr[SPR_IMISS] = address;
env->spr[SPR_ICMP] = 0x80000000 | ctx.ptem;
error_code = 1 << 18;
goto tlb_miss;
case POWERPC_MMU_SOFT_74xx:
exception = POWERPC_EXCP_IFTLB;
env->exception_index = POWERPC_EXCP_IFTLB;
goto tlb_miss_74xx;
case POWERPC_MMU_SOFT_4xx:
case POWERPC_MMU_SOFT_4xx_Z:
exception = POWERPC_EXCP_ITLB;
error_code = 0;
env->exception_index = POWERPC_EXCP_ITLB;
env->error_code = 0;
env->spr[SPR_40x_DEAR] = address;
env->spr[SPR_40x_ESR] = 0x00000000;
break;
case POWERPC_MMU_32B:
error_code = 0x40000000;
break;
#if defined(TARGET_PPC64)
case POWERPC_MMU_64B:
/* XXX: TODO */
cpu_abort(env, "MMU model not implemented\n");
return -1;
case POWERPC_MMU_64BRIDGE:
/* XXX: TODO */
cpu_abort(env, "MMU model not implemented\n");
return -1;
#endif
env->exception_index = POWERPC_EXCP_ISI;
env->error_code = 0x40000000;
break;
case POWERPC_MMU_601:
/* XXX: TODO */
cpu_abort(env, "MMU model not implemented\n");
......@@ -1310,64 +1303,65 @@ int cpu_ppc_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
break;
case -2:
/* Access rights violation */
error_code = 0x08000000;
env->exception_index = POWERPC_EXCP_ISI;
env->error_code = 0x08000000;
break;
case -3:
/* No execute protection violation */
error_code = 0x10000000;
env->exception_index = POWERPC_EXCP_ISI;
env->error_code = 0x10000000;
break;
case -4:
/* Direct store exception */
/* No code fetch is allowed in direct-store areas */
error_code = 0x10000000;
env->exception_index = POWERPC_EXCP_ISI;
env->error_code = 0x10000000;
break;
#if defined(TARGET_PPC64)
case -5:
/* No match in segment table */
exception = POWERPC_EXCP_ISEG;
error_code = 0;
env->exception_index = POWERPC_EXCP_ISEG;
env->error_code = 0;
break;
#endif
}
} else {
exception = POWERPC_EXCP_DSI;
switch (ret) {
case -1:
/* No matches in page tables or TLB */
switch (env->mmu_model) {
case POWERPC_MMU_SOFT_6xx:
if (rw == 1) {
exception = POWERPC_EXCP_DSTLB;
error_code = 1 << 16;
env->exception_index = POWERPC_EXCP_DSTLB;
env->error_code = 1 << 16;
} else {
exception = POWERPC_EXCP_DLTLB;
error_code = 0;
env->exception_index = POWERPC_EXCP_DLTLB;
env->error_code = 0;
}
env->spr[SPR_DMISS] = address;
env->spr[SPR_DCMP] = 0x80000000 | ctx.ptem;
tlb_miss:
error_code |= ctx.key << 19;
env->error_code |= ctx.key << 19;
env->spr[SPR_HASH1] = ctx.pg_addr[0];
env->spr[SPR_HASH2] = ctx.pg_addr[1];
/* Do not alter DAR nor DSISR */
goto out;
break;
case POWERPC_MMU_SOFT_74xx:
if (rw == 1) {
exception = POWERPC_EXCP_DSTLB;
env->exception_index = POWERPC_EXCP_DSTLB;
} else {
exception = POWERPC_EXCP_DLTLB;
env->exception_index = POWERPC_EXCP_DLTLB;
}
tlb_miss_74xx:
/* Implement LRU algorithm */
env->error_code = ctx.key << 19;
env->spr[SPR_TLBMISS] = (address & ~((target_ulong)0x3)) |
((env->last_way + 1) & (env->nb_ways - 1));
env->spr[SPR_PTEHI] = 0x80000000 | ctx.ptem;
error_code = ctx.key << 19;
break;
case POWERPC_MMU_SOFT_4xx:
case POWERPC_MMU_SOFT_4xx_Z:
exception = POWERPC_EXCP_DTLB;
error_code = 0;
env->exception_index = POWERPC_EXCP_DTLB;
env->error_code = 0;
env->spr[SPR_40x_DEAR] = address;
if (rw)
env->spr[SPR_40x_ESR] = 0x00800000;
......@@ -1375,18 +1369,18 @@ int cpu_ppc_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
env->spr[SPR_40x_ESR] = 0x00000000;
break;
case POWERPC_MMU_32B:
error_code = 0x40000000;
break;
#if defined(TARGET_PPC64)
case POWERPC_MMU_64B:
/* XXX: TODO */
cpu_abort(env, "MMU model not implemented\n");
return -1;
case POWERPC_MMU_64BRIDGE:
/* XXX: TODO */
cpu_abort(env, "MMU model not implemented\n");
return -1;
#endif
env->exception_index = POWERPC_EXCP_DSI;
env->error_code = 0;
env->spr[SPR_DAR] = address;
if (rw == 1)
env->spr[SPR_DSISR] = 0x42000000;
else
env->spr[SPR_DSISR] = 0x40000000;
break;
case POWERPC_MMU_601:
/* XXX: TODO */
cpu_abort(env, "MMU model not implemented\n");
......@@ -1410,52 +1404,66 @@ int cpu_ppc_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
break;
case -2:
/* Access rights violation */
error_code = 0x08000000;
env->exception_index = POWERPC_EXCP_DSI;
env->error_code = 0;
env->spr[SPR_DAR] = address;
if (rw == 1)
env->spr[SPR_DSISR] = 0x0A000000;
else
env->spr[SPR_DSISR] = 0x08000000;
break;
case -4:
/* Direct store exception */
switch (access_type) {
case ACCESS_FLOAT:
/* Floating point load/store */
exception = POWERPC_EXCP_ALIGN;
error_code = POWERPC_EXCP_ALIGN_FP;
env->exception_index = POWERPC_EXCP_ALIGN;
env->error_code = POWERPC_EXCP_ALIGN_FP;
env->spr[SPR_DAR] = address;
break;
case ACCESS_RES:
/* lwarx, ldarx or srwcx. */
error_code = 0x04000000;
/* lwarx, ldarx or stwcx. */
env->exception_index = POWERPC_EXCP_DSI;
env->error_code = 0;
env->spr[SPR_DAR] = address;
if (rw == 1)
env->spr[SPR_DSISR] = 0x06000000;
else
env->spr[SPR_DSISR] = 0x04000000;
break;
case ACCESS_EXT:
/* eciwx or ecowx */
error_code = 0x04100000;
env->exception_index = POWERPC_EXCP_DSI;
env->error_code = 0;
env->spr[SPR_DAR] = address;
if (rw == 1)
env->spr[SPR_DSISR] = 0x06100000;
else
env->spr[SPR_DSISR] = 0x04100000;
break;
default:
printf("DSI: invalid exception (%d)\n", ret);
exception = POWERPC_EXCP_PROGRAM;
error_code = POWERPC_EXCP_INVAL | POWERPC_EXCP_INVAL_INVAL;
env->exception_index = POWERPC_EXCP_PROGRAM;
env->error_code =
POWERPC_EXCP_INVAL | POWERPC_EXCP_INVAL_INVAL;
env->spr[SPR_DAR] = address;
break;
}
break;
#if defined(TARGET_PPC64)
case -5:
/* No match in segment table */
exception = POWERPC_EXCP_DSEG;
error_code = 0;
env->exception_index = POWERPC_EXCP_DSEG;
env->error_code = 0;
env->spr[SPR_DAR] = address;
break;
#endif
}
if (exception == POWERPC_EXCP_DSI && rw == 1)
error_code |= 0x02000000;
/* Store fault address */
env->spr[SPR_DAR] = address;
env->spr[SPR_DSISR] = error_code;
}
out:
#if 0
printf("%s: set exception to %d %02x\n",
__func__, exception, error_code);
printf("%s: set exception to %d %02x\n", __func__,
env->exception, env->error_code);
#endif
env->exception_index = exception;
env->error_code = error_code;
ret = 1;
}
......@@ -2291,8 +2299,6 @@ static always_inline void powerpc_excp (CPUState *env,
if (lpes1 == 0)
msr_hv = 1;
#endif
/* XXX: TODO */
cpu_abort(env, "Data segment exception is not implemented yet !\n");
goto store_next;
case POWERPC_EXCP_ISEG: /* Instruction segment exception */
msr_ri = 0;
......@@ -2300,9 +2306,6 @@ static always_inline void powerpc_excp (CPUState *env,
if (lpes1 == 0)
msr_hv = 1;
#endif
/* XXX: TODO */
cpu_abort(env,
"Instruction segment exception is not implemented yet !\n");
goto store_next;
#endif /* defined(TARGET_PPC64) */
#if defined(TARGET_PPC64H)
......
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