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-rw-r--r--target-ppc/helper.c349
1 files changed, 170 insertions, 179 deletions
diff --git a/target-ppc/helper.c b/target-ppc/helper.c
index 4e8206e728..e4bc0545b3 100644
--- a/target-ppc/helper.c
+++ b/target-ppc/helper.c
@@ -21,6 +21,7 @@
#include "exec.h"
#if defined (USE_OPEN_FIRMWARE)
+#include <time.h>
#include "of.h"
#endif
@@ -28,7 +29,7 @@
//#define DEBUG_BATS
//#define DEBUG_EXCEPTIONS
-extern FILE *logfile, *stderr;
+extern FILE *logfile, *stdout, *stderr;
void exit (int);
void abort (void);
@@ -74,6 +75,9 @@ int check_exception_state (CPUState *env)
/*****************************************************************************/
/* PPC MMU emulation */
+int cpu_ppc_handle_mmu_fault (CPUState *env, uint32_t address, int rw,
+ int is_user, int is_softmmu);
+
/* Perform BAT hit & translation */
static int get_bat (CPUState *env, uint32_t *real, int *prot,
uint32_t virtual, int rw, int type)
@@ -88,8 +92,6 @@ static int get_bat (CPUState *env, uint32_t *real, int *prot,
fprintf(logfile, "%s: %cBAT v 0x%08x\n", __func__,
type == ACCESS_CODE ? 'I' : 'D', virtual);
}
- printf("%s: %cBAT v 0x%08x\n", __func__,
- type == ACCESS_CODE ? 'I' : 'D', virtual);
#endif
switch (type) {
case ACCESS_CODE:
@@ -106,8 +108,6 @@ static int get_bat (CPUState *env, uint32_t *real, int *prot,
fprintf(logfile, "%s...: %cBAT v 0x%08x\n", __func__,
type == ACCESS_CODE ? 'I' : 'D', virtual);
}
- printf("%s...: %cBAT v 0x%08x\n", __func__,
- type == ACCESS_CODE ? 'I' : 'D', virtual);
#endif
base = virtual & 0xFFFC0000;
for (i = 0; i < 4; i++) {
@@ -121,10 +121,6 @@ static int get_bat (CPUState *env, uint32_t *real, int *prot,
fprintf(logfile, "%s: %cBAT%d v 0x%08x BATu 0x%08x BATl 0x%08x\n",
__func__, type == ACCESS_CODE ? 'I' : 'D', i, virtual,
*BATu, *BATl);
- } else {
- printf("%s: %cBAT%d v 0x%08x BATu 0x%08x BATl 0x%08x\n",
- __func__, type == ACCESS_CODE ? 'I' : 'D', i, virtual,
- *BATu, *BATl);
}
#endif
if ((virtual & 0xF0000000) == BEPIu &&
@@ -135,7 +131,7 @@ static int get_bat (CPUState *env, uint32_t *real, int *prot,
/* Get physical address */
*real = (*BATl & 0xF0000000) |
((virtual & 0x0FFE0000 & bl) | (*BATl & 0x0FFE0000)) |
- (virtual & 0x0001FFFF);
+ (virtual & 0x0001F000);
if (*BATl & 0x00000001)
*prot = PROT_READ;
if (*BATl & 0x00000002)
@@ -145,10 +141,6 @@ static int get_bat (CPUState *env, uint32_t *real, int *prot,
fprintf(logfile, "BAT %d match: r 0x%08x prot=%c%c\n",
i, *real, *prot & PROT_READ ? 'R' : '-',
*prot & PROT_WRITE ? 'W' : '-');
- } else {
- printf("BAT %d match: 0x%08x => 0x%08x prot=%c%c\n",
- i, virtual, *real, *prot & PROT_READ ? 'R' : '-',
- *prot & PROT_WRITE ? 'W' : '-');
}
#endif
ret = 0;
@@ -181,7 +173,7 @@ static int get_bat (CPUState *env, uint32_t *real, int *prot,
static int find_pte (uint32_t *RPN, int *prot, uint32_t base, uint32_t va,
int h, int key, int rw)
{
- uint32_t pte0, pte1, keep = 0;
+ uint32_t pte0, pte1, keep = 0, access = 0;
int i, good = -1, store = 0;
int ret = -1; /* No entry found */
@@ -189,85 +181,97 @@ static int find_pte (uint32_t *RPN, int *prot, uint32_t base, uint32_t va,
pte0 = ldl_raw((void *)((uint32_t)phys_ram_base + base + (i * 8)));
pte1 = ldl_raw((void *)((uint32_t)phys_ram_base + base + (i * 8) + 4));
#if defined (DEBUG_MMU)
- printf("Load pte from 0x%08x => 0x%08x 0x%08x\n", base + (i * 8),
- pte0, pte1);
+ if (loglevel > 0) {
+ fprintf(logfile, "Load pte from 0x%08x => 0x%08x 0x%08x "
+ "%d %d %d 0x%08x\n", base + (i * 8), pte0, pte1,
+ pte0 >> 31, h, (pte0 >> 6) & 1, va);
+ }
#endif
/* Check validity and table match */
if (pte0 & 0x80000000 && (h == ((pte0 >> 6) & 1))) {
-#if defined (DEBUG_MMU)
- printf("PTE is valid and table matches... compare 0x%08x:%08x\n",
- pte0 & 0x7FFFFFBF, va);
-#endif
/* Check vsid & api */
if ((pte0 & 0x7FFFFFBF) == va) {
-#if defined (DEBUG_MMU)
- printf("PTE match !\n");
-#endif
if (good == -1) {
good = i;
keep = pte1;
} else {
/* All matches should have equal RPN, WIMG & PP */
if ((keep & 0xFFFFF07B) != (pte1 & 0xFFFFF07B)) {
- printf("Bad RPN/WIMG/PP\n");
+ if (loglevel > 0)
+ fprintf(logfile, "Bad RPN/WIMG/PP\n");
return -1;
}
}
/* Check access rights */
if (key == 0) {
- *prot = PROT_READ;
+ access = PROT_READ;
if ((pte1 & 0x00000003) != 0x3)
- *prot |= PROT_WRITE;
+ access |= PROT_WRITE;
} else {
switch (pte1 & 0x00000003) {
case 0x0:
- *prot = 0;
+ access = 0;
break;
case 0x1:
case 0x3:
- *prot = PROT_READ;
+ access = PROT_READ;
break;
case 0x2:
- *prot = PROT_READ | PROT_WRITE;
+ access = PROT_READ | PROT_WRITE;
break;
}
}
- if ((rw == 0 && *prot != 0) ||
- (rw == 1 && (*prot & PROT_WRITE))) {
+ if (ret < 0) {
+ if ((rw == 0 && (access & PROT_READ)) ||
+ (rw == 1 && (access & PROT_WRITE))) {
#if defined (DEBUG_MMU)
- printf("PTE access granted !\n");
+ if (loglevel > 0)
+ fprintf(logfile, "PTE access granted !\n");
#endif
good = i;
keep = pte1;
ret = 0;
- } else if (ret == -1) {
- ret = -2; /* Access right violation */
+ } else {
+ /* Access right violation */
+ ret = -2;
#if defined (DEBUG_MMU)
- printf("PTE access rejected\n");
+ if (loglevel > 0)
+ fprintf(logfile, "PTE access rejected\n");
#endif
}
+ *prot = access;
+ }
}
}
}
if (good != -1) {
*RPN = keep & 0xFFFFF000;
#if defined (DEBUG_MMU)
- printf("found PTE at addr 0x%08x prot=0x%01x ret=%d\n",
+ if (loglevel > 0) {
+ fprintf(logfile, "found PTE at addr 0x%08x prot=0x%01x ret=%d\n",
*RPN, *prot, ret);
+ }
#endif
/* Update page flags */
if (!(keep & 0x00000100)) {
+ /* Access flag */
keep |= 0x00000100;
store = 1;
}
- if (rw) {
if (!(keep & 0x00000080)) {
+ if (rw && ret == 0) {
+ /* Change flag */
keep |= 0x00000080;
store = 1;
+ } else {
+ /* Force page fault for first write access */
+ *prot &= ~PROT_WRITE;
}
}
- if (store)
- stl_raw((void *)(base + (good * 2) + 1), keep);
+ if (store) {
+ stl_raw((void *)((uint32_t)phys_ram_base + base + (good * 8) + 4),
+ keep);
+ }
}
return ret;
@@ -290,29 +294,37 @@ static int get_segment (CPUState *env, uint32_t *real, int *prot,
sr = env->sr[virtual >> 28];
#if defined (DEBUG_MMU)
- printf("Check segment v=0x%08x %d 0x%08x nip=0x%08x lr=0x%08x ir=%d dr=%d "
- "pr=%d t=%d\n", virtual, virtual >> 28, sr, env->nip,
- env->lr, msr_ir, msr_dr, msr_pr, type);
+ if (loglevel > 0) {
+ fprintf(logfile, "Check segment v=0x%08x %d 0x%08x nip=0x%08x "
+ "lr=0x%08x ir=%d dr=%d pr=%d %d t=%d\n",
+ virtual, virtual >> 28, sr, env->nip,
+ env->lr, msr_ir, msr_dr, msr_pr, rw, type);
+ }
#endif
- key = ((sr & 0x20000000) && msr_pr == 1) ||
- ((sr & 0x40000000) && msr_pr == 0) ? 1 : 0;
+ key = (((sr & 0x20000000) && msr_pr == 1) ||
+ ((sr & 0x40000000) && msr_pr == 0)) ? 1 : 0;
if ((sr & 0x80000000) == 0) {
#if defined (DEBUG_MMU)
- printf("pte segment: key=%d n=0x%08x\n", key, sr & 0x10000000);
+ if (loglevel > 0)
+ fprintf(logfile, "pte segment: key=%d n=0x%08x\n",
+ key, sr & 0x10000000);
#endif
/* Check if instruction fetch is allowed, if needed */
if (type != ACCESS_CODE || (sr & 0x10000000) == 0) {
/* Page address translation */
vsid = sr & 0x00FFFFFF;
pgidx = (virtual >> 12) & 0xFFFF;
- sdr = env->spr[SDR1];
- hash = ((vsid ^ pgidx) & 0x07FFFF) << 6;
+ sdr = env->sdr1;
+ hash = ((vsid ^ pgidx) & 0x0007FFFF) << 6;
mask = ((sdr & 0x000001FF) << 16) | 0xFFC0;
pg_addr = get_pgaddr(sdr, hash, mask);
ptem = (vsid << 7) | (pgidx >> 10);
#if defined (DEBUG_MMU)
- printf("0 sdr1=0x%08x vsid=0x%06x api=0x%04x hash=0x%07x "
- "pg_addr=0x%08x\n", sdr, vsid, pgidx, hash, pg_addr);
+ if (loglevel > 0) {
+ fprintf(logfile, "0 sdr1=0x%08x vsid=0x%06x api=0x%04x "
+ "hash=0x%07x pg_addr=0x%08x\n", sdr, vsid, pgidx, hash,
+ pg_addr);
+ }
#endif
/* Primary table lookup */
ret = find_pte(real, prot, pg_addr, ptem, 0, key, rw);
@@ -321,25 +333,27 @@ static int get_segment (CPUState *env, uint32_t *real, int *prot,
hash = (~hash) & 0x01FFFFC0;
pg_addr = get_pgaddr(sdr, hash, mask);
#if defined (DEBUG_MMU)
- printf("1 sdr1=0x%08x vsid=0x%06x api=0x%04x hash=0x%05x "
- "pg_addr=0x%08x\n", sdr, vsid, pgidx, hash, pg_addr);
+ if (virtual != 0xEFFFFFFF && loglevel > 0) {
+ fprintf(logfile, "1 sdr1=0x%08x vsid=0x%06x api=0x%04x "
+ "hash=0x%05x pg_addr=0x%08x\n", sdr, vsid, pgidx,
+ hash, pg_addr);
+ }
#endif
ret2 = find_pte(real, prot, pg_addr, ptem, 1, key, rw);
if (ret2 != -1)
ret = ret2;
}
- if (ret != -1)
- *real |= (virtual & 0x00000FFF);
- if (ret == -2 && type == ACCESS_CODE && (sr & 0x10000000))
- ret = -3;
} else {
#if defined (DEBUG_MMU)
- printf("No access allowed\n");
+ if (loglevel > 0)
+ fprintf(logfile, "No access allowed\n");
#endif
+ ret = -3;
}
} else {
#if defined (DEBUG_MMU)
- printf("direct store...\n");
+ if (loglevel > 0)
+ fprintf(logfile, "direct store...\n");
#endif
/* Direct-store segment : absolutely *BUGGY* for now */
switch (type) {
@@ -393,9 +407,10 @@ int get_physical_address (CPUState *env, uint32_t *physical, int *prot,
if (loglevel > 0) {
fprintf(logfile, "%s\n", __func__);
}
+
if ((access_type == ACCESS_CODE && msr_ir == 0) || msr_dr == 0) {
/* No address translation */
- *physical = address;
+ *physical = address & ~0xFFF;
*prot = PROT_READ | PROT_WRITE;
ret = 0;
} else {
@@ -406,6 +421,10 @@ int get_physical_address (CPUState *env, uint32_t *physical, int *prot,
ret = get_segment(env, physical, prot, address, rw, access_type);
}
}
+ if (loglevel > 0) {
+ fprintf(logfile, "%s address %08x => %08x\n",
+ __func__, address, *physical);
+ }
return ret;
}
@@ -448,18 +467,17 @@ target_ulong cpu_get_phys_page_debug(CPUState *env, target_ulong addr)
NULL, it means that the function was called in C code (i.e. not
from generated code or from helper.c) */
/* XXX: fix it to restore all registers */
-void tlb_fill(unsigned long addr, int is_write, int flags, void *retaddr)
+void tlb_fill(unsigned long addr, int is_write, int is_user, void *retaddr)
{
TranslationBlock *tb;
- int ret, is_user;
- unsigned long pc;
CPUState *saved_env;
+ unsigned long pc;
+ int ret;
/* XXX: hack to restore env in all cases, even if not called from
generated code */
saved_env = env;
env = cpu_single_env;
- is_user = flags & 0x01;
{
unsigned long tlb_addrr, tlb_addrw;
int index;
@@ -474,7 +492,7 @@ void tlb_fill(unsigned long addr, int is_write, int flags, void *retaddr)
tlb_addrr & (TARGET_PAGE_MASK | TLB_INVALID_MASK));
#endif
}
- ret = cpu_handle_mmu_fault(env, addr, is_write, flags, 1);
+ ret = cpu_ppc_handle_mmu_fault(env, addr, is_write, is_user, 1);
if (ret) {
if (retaddr) {
/* now we have a real cpu fault */
@@ -506,7 +524,7 @@ void tlb_fill(unsigned long addr, int is_write, int flags, void *retaddr)
env = saved_env;
}
-void cpu_ppc_init_mmu(CPUPPCState *env)
+void cpu_ppc_init_mmu(CPUState *env)
{
/* Nothing to do: all translation are disabled */
}
@@ -514,59 +532,36 @@ void cpu_ppc_init_mmu(CPUPPCState *env)
/* Perform address translation */
int cpu_ppc_handle_mmu_fault (CPUState *env, uint32_t address, int rw,
- int flags, int is_softmmu)
+ int is_user, int is_softmmu)
{
uint32_t physical;
int prot;
int exception = 0, error_code = 0;
- int is_user, access_type;
+ int access_type;
int ret = 0;
// printf("%s 0\n", __func__);
- is_user = flags & 0x01;
access_type = env->access_type;
if (env->user_mode_only) {
/* user mode only emulation */
ret = -1;
goto do_fault;
}
+ /* NASTY BUG workaround */
+ if (access_type == ACCESS_CODE && rw) {
+ // printf("%s: ERROR WRITE CODE ACCESS\n", __func__);
+ access_type = ACCESS_INT;
+ }
ret = get_physical_address(env, &physical, &prot,
address, rw, access_type);
if (ret == 0) {
- ret = tlb_set_page(env, address, physical, prot, is_user, is_softmmu);
+ ret = tlb_set_page(env, address & ~0xFFF, physical, prot,
+ is_user, is_softmmu);
} else if (ret < 0) {
do_fault:
#if defined (DEBUG_MMU)
- printf("%s 5\n", __func__);
- printf("nip=0x%08x LR=0x%08x CTR=0x%08x MSR=0x%08x TBL=0x%08x\n",
- env->nip, env->lr, env->ctr, /*msr*/0, env->tb[0]);
- {
- int i;
- for (i = 0; i < 32; i++) {
- if ((i & 7) == 0)
- printf("GPR%02d:", i);
- printf(" %08x", env->gpr[i]);
- if ((i & 7) == 7)
- printf("\n");
- }
- printf("CR: 0x");
- for (i = 0; i < 8; i++)
- printf("%01x", env->crf[i]);
- printf(" [");
- for (i = 0; i < 8; i++) {
- char a = '-';
- if (env->crf[i] & 0x08)
- a = 'L';
- else if (env->crf[i] & 0x04)
- a = 'G';
- else if (env->crf[i] & 0x02)
- a = 'E';
- printf(" %c%c", a, env->crf[i] & 0x01 ? 'O' : ' ');
- }
- printf(" ] ");
- }
- printf("TB: 0x%08x %08x\n", env->tb[1], env->tb[0]);
- printf("SRR0 0x%08x SRR1 0x%08x\n", env->spr[SRR0], env->spr[SRR1]);
+ if (loglevel > 0)
+ cpu_ppc_dump_state(env, logfile, 0);
#endif
if (access_type == ACCESS_CODE) {
exception = EXCP_ISI;
@@ -580,13 +575,13 @@ int cpu_ppc_handle_mmu_fault (CPUState *env, uint32_t address, int rw,
error_code = EXCP_ISI_PROT;
break;
case -3:
+ /* No execute protection violation */
error_code = EXCP_ISI_NOEXEC;
break;
case -4:
/* Direct store exception */
/* No code fetch is allowed in direct-store areas */
- exception = EXCP_ISI;
- error_code = EXCP_ISI_NOEXEC;
+ error_code = EXCP_ISI_DIRECT;
break;
}
} else {
@@ -612,15 +607,15 @@ int cpu_ppc_handle_mmu_fault (CPUState *env, uint32_t address, int rw,
/* lwarx, ldarx or srwcx. */
exception = EXCP_DSI;
error_code = EXCP_DSI_NOTSUP | EXCP_DSI_DIRECT;
- if (rw)
- error_code |= EXCP_DSI_STORE;
break;
case ACCESS_EXT:
/* eciwx or ecowx */
exception = EXCP_DSI;
- error_code = EXCP_DSI_NOTSUP | EXCP_DSI_DIRECT | EXCP_ECXW;
+ error_code = EXCP_DSI_NOTSUP | EXCP_DSI_DIRECT |
+ EXCP_DSI_ECXW;
break;
default:
+ printf("DSI: invalid exception (%d)\n", ret);
exception = EXCP_PROGRAM;
error_code = EXCP_INVAL | EXCP_INVAL_INVAL;
break;
@@ -628,27 +623,8 @@ int cpu_ppc_handle_mmu_fault (CPUState *env, uint32_t address, int rw,
}
if (rw)
error_code |= EXCP_DSI_STORE;
- /* Should find a better solution:
- * this will be invalid for some exception if more than one
- * exception occurs for one instruction
- */
- env->spr[DSISR] = 0;
- if (error_code & EXCP_DSI_DIRECT) {
- env->spr[DSISR] |= 0x80000000;
- if (access_type == ACCESS_EXT ||
- access_type == ACCESS_RES)
- env->spr[DSISR] |= 0x04000000;
- }
- if ((error_code & 0xF) == EXCP_DSI_TRANSLATE)
- env->spr[DSISR] |= 0x40000000;
- if (error_code & EXCP_DSI_PROT)
- env->spr[DSISR] |= 0x08000000;
- if (error_code & EXCP_DSI_STORE)
- env->spr[DSISR] |= 0x02000000;
- if ((error_code & 0xF) == EXCP_DSI_DABR)
- env->spr[DSISR] |= 0x00400000;
- if (access_type == ACCESS_EXT)
- env->spr[DSISR] |= 0x00100000;
+ /* Store fault address */
+ env->spr[DAR] = address;
}
#if 0
printf("%s: set exception to %d %02x\n",
@@ -656,15 +632,13 @@ int cpu_ppc_handle_mmu_fault (CPUState *env, uint32_t address, int rw,
#endif
env->exception_index = exception;
env->error_code = error_code;
- /* Store fault address */
- env->spr[DAR] = address;
ret = 1;
}
return ret;
}
-uint32_t _load_xer (void)
+uint32_t _load_xer (CPUState *env)
{
return (xer_so << XER_SO) |
(xer_ov << XER_OV) |
@@ -672,7 +646,7 @@ uint32_t _load_xer (void)
(xer_bc << XER_BC);
}
-void _store_xer (uint32_t value)
+void _store_xer (CPUState *env, uint32_t value)
{
xer_so = (value >> XER_SO) & 0x01;
xer_ov = (value >> XER_OV) & 0x01;
@@ -680,7 +654,7 @@ void _store_xer (uint32_t value)
xer_bc = (value >> XER_BC) & 0x1f;
}
-uint32_t _load_msr (void)
+uint32_t _load_msr (CPUState *env)
{
return (msr_pow << MSR_POW) |
(msr_ile << MSR_ILE) |
@@ -699,8 +673,13 @@ uint32_t _load_msr (void)
(msr_le << MSR_LE);
}
-void _store_msr (uint32_t value)
+void _store_msr (CPUState *env, uint32_t value)
{
+ if (((T0 >> MSR_IR) & 0x01) != msr_ir ||
+ ((T0 >> MSR_DR) & 0x01) != msr_dr) {
+ /* Flush all tlb when changing translation mode or privilege level */
+ do_tlbia();
+ }
msr_pow = (value >> MSR_POW) & 0x03;
msr_ile = (value >> MSR_ILE) & 0x01;
msr_ee = (value >> MSR_EE) & 0x01;
@@ -729,47 +708,16 @@ void do_interrupt (CPUState *env)
/* Dequeue PPC exceptions */
if (excp < EXCP_PPC_MAX)
env->exceptions &= ~(1 << excp);
- msr = _load_msr();
+ msr = _load_msr(env);
#if defined (DEBUG_EXCEPTIONS)
- if (excp != EXCP_DECR && excp == EXCP_PROGRAM && excp < EXCP_PPC_MAX)
+ if ((excp == EXCP_PROGRAM || excp == EXCP_DSI) && msr_pr == 1)
{
if (loglevel > 0) {
fprintf(logfile, "Raise exception at 0x%08x => 0x%08x (%02x)\n",
env->nip, excp << 8, env->error_code);
- } else {
- printf("Raise exception at 0x%08x => 0x%08x (%02x)\n",
- env->nip, excp << 8, env->error_code);
- }
- printf("nip=0x%08x LR=0x%08x CTR=0x%08x MSR=0x%08x DECR=0x%08x\n",
- env->nip, env->lr, env->ctr, msr, env->decr);
- {
- int i;
- for (i = 0; i < 32; i++) {
- if ((i & 7) == 0)
- printf("GPR%02d:", i);
- printf(" %08x", env->gpr[i]);
- if ((i & 7) == 7)
- printf("\n");
- }
- printf("CR: 0x");
- for (i = 0; i < 8; i++)
- printf("%01x", env->crf[i]);
- printf(" [");
- for (i = 0; i < 8; i++) {
- char a = '-';
- if (env->crf[i] & 0x08)
- a = 'L';
- else if (env->crf[i] & 0x04)
- a = 'G';
- else if (env->crf[i] & 0x02)
- a = 'E';
- printf(" %c%c", a, env->crf[i] & 0x01 ? 'O' : ' ');
}
- printf(" ] ");
- }
- printf("TB: 0x%08x %08x\n", env->tb[1], env->tb[0]);
- printf("XER 0x%08x SRR0 0x%08x SRR1 0x%08x\n",
- _load_xer(), env->spr[SRR0], env->spr[SRR1]);
+ if (loglevel > 0)
+ cpu_ppc_dump_state(env, logfile, 0);
}
#endif
/* Generate informations in save/restore registers */
@@ -812,26 +760,63 @@ void do_interrupt (CPUState *env)
/* data location address has been stored
* when the fault has been detected
*/
- goto store_current;
+ msr &= ~0xFFFF0000;
+ env->spr[DSISR] = 0;
+ if (env->error_code & EXCP_DSI_TRANSLATE)
+ env->spr[DSISR] |= 0x40000000;
+ else if (env->error_code & EXCP_DSI_PROT)
+ env->spr[DSISR] |= 0x08000000;
+ else if (env->error_code & EXCP_DSI_NOTSUP) {
+ env->spr[DSISR] |= 0x80000000;
+ if (env->error_code & EXCP_DSI_DIRECT)
+ env->spr[DSISR] |= 0x04000000;
+ }
+ if (env->error_code & EXCP_DSI_STORE)
+ env->spr[DSISR] |= 0x02000000;
+ if ((env->error_code & 0xF) == EXCP_DSI_DABR)
+ env->spr[DSISR] |= 0x00400000;
+ if (env->error_code & EXCP_DSI_ECXW)
+ env->spr[DSISR] |= 0x00100000;
+#if defined (DEBUG_EXCEPTIONS)
+ if (loglevel) {
+ fprintf(logfile, "DSI exception: DSISR=0x%08x, DAR=0x%08x\n",
+ env->spr[DSISR], env->spr[DAR]);
+ } else {
+ printf("DSI exception: DSISR=0x%08x, DAR=0x%08x nip=0x%08x\n",
+ env->spr[DSISR], env->spr[DAR], env->nip);
+ }
+#endif
+ goto store_next;
case EXCP_ISI:
/* Store exception cause */
+ msr &= ~0xFFFF0000;
if (env->error_code == EXCP_ISI_TRANSLATE)
msr |= 0x40000000;
else if (env->error_code == EXCP_ISI_NOEXEC ||
- env->error_code == EXCP_ISI_GUARD)
+ env->error_code == EXCP_ISI_GUARD ||
+ env->error_code == EXCP_ISI_DIRECT)
msr |= 0x10000000;
else
msr |= 0x08000000;
+#if defined (DEBUG_EXCEPTIONS)
+ if (loglevel) {
+ fprintf(logfile, "ISI exception: msr=0x%08x, nip=0x%08x\n",
+ msr, env->nip);
+ } else {
+ printf("ISI exception: msr=0x%08x, nip=0x%08x tbl:0x%08x\n",
+ msr, env->nip, env->spr[V_TBL]);
+ }
+#endif
goto store_next;
case EXCP_EXTERNAL:
if (msr_ee == 0) {
#if defined (DEBUG_EXCEPTIONS)
if (loglevel > 0) {
fprintf(logfile, "Skipping hardware interrupt\n");
- } else {
- printf("Skipping hardware interrupt\n");
}
#endif
+ /* Requeue it */
+ do_queue_exception(EXCP_EXTERNAL);
return;
}
goto store_next;
@@ -863,6 +848,7 @@ void do_interrupt (CPUState *env)
env->fpscr[7] |= 0x4;
break;
case EXCP_INVAL:
+ printf("Invalid instruction at 0x%08x\n", env->nip);
msr |= 0x00080000;
break;
case EXCP_PRIV:
@@ -888,8 +874,17 @@ void do_interrupt (CPUState *env)
goto store_next;
case EXCP_SYSCALL:
#if defined (DEBUG_EXCEPTIONS)
- printf("syscall %d 0x%08x 0x%08x 0x%08x 0x%08x\n",
- env->gpr[0], env->gpr[3], env->gpr[4], env->gpr[5], env->gpr[6]);
+ if (msr_pr) {
+ if (loglevel) {
+ fprintf(logfile, "syscall %d 0x%08x 0x%08x 0x%08x 0x%08x\n",
+ env->gpr[0], env->gpr[3], env->gpr[4],
+ env->gpr[5], env->gpr[6]);
+ } else {
+ printf("syscall %d from 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x\n",
+ env->gpr[0], env->nip, env->gpr[3], env->gpr[4],
+ env->gpr[5], env->gpr[6]);
+ }
+ }
#endif
goto store_next;
case EXCP_TRACE:
@@ -898,20 +893,16 @@ void do_interrupt (CPUState *env)
goto store_next;
case EXCP_MTMSR:
/* Nothing to do */
-#if defined (DEBUG_EXCEPTIONS)
- printf("%s: escape EXCP_MTMSR\n", __func__);
-#endif
return;
case EXCP_BRANCH:
/* Nothing to do */
-#if defined (DEBUG_EXCEPTIONS)
- printf("%s: escape EXCP_BRANCH\n", __func__);
-#endif
return;
case EXCP_RFI:
/* Restore user-mode state */
+ tb_flush(env);
#if defined (DEBUG_EXCEPTIONS)
- printf("%s: escape EXCP_RFI\n", __func__);
+ if (msr_pr == 1)
+ printf("Return from exception => 0x%08x\n", (uint32_t)env->nip);
#endif
return;
store_current:
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-17 11:18:07 +0000