aboutsummaryrefslogtreecommitdiff
path: root/target-cris
diff options
context:
space:
mode:
Diffstat (limited to 'target-cris')
-rw-r--r--target-cris/helper.c393
1 files changed, 196 insertions, 197 deletions
diff --git a/target-cris/helper.c b/target-cris/helper.c
index 6e75e9819e..de04143da8 100644
--- a/target-cris/helper.c
+++ b/target-cris/helper.c
@@ -36,19 +36,19 @@
#if defined(CONFIG_USER_ONLY)
-void do_interrupt (CPUCRISState *env)
+void do_interrupt(CPUCRISState *env)
{
- env->exception_index = -1;
- env->pregs[PR_ERP] = env->pc;
+ env->exception_index = -1;
+ env->pregs[PR_ERP] = env->pc;
}
int cpu_cris_handle_mmu_fault(CPUCRISState * env, target_ulong address, int rw,
int mmu_idx)
{
- env->exception_index = 0xaa;
- env->pregs[PR_EDA] = address;
- cpu_dump_state(env, stderr, fprintf, 0);
- return 1;
+ env->exception_index = 0xaa;
+ env->pregs[PR_EDA] = address;
+ cpu_dump_state(env, stderr, fprintf, 0);
+ return 1;
}
#else /* !CONFIG_USER_ONLY */
@@ -56,211 +56,210 @@ int cpu_cris_handle_mmu_fault(CPUCRISState * env, target_ulong address, int rw,
static void cris_shift_ccs(CPUCRISState *env)
{
- uint32_t ccs;
- /* Apply the ccs shift. */
- ccs = env->pregs[PR_CCS];
- ccs = ((ccs & 0xc0000000) | ((ccs << 12) >> 2)) & ~0x3ff;
- env->pregs[PR_CCS] = ccs;
+ uint32_t ccs;
+ /* Apply the ccs shift. */
+ ccs = env->pregs[PR_CCS];
+ ccs = ((ccs & 0xc0000000) | ((ccs << 12) >> 2)) & ~0x3ff;
+ env->pregs[PR_CCS] = ccs;
}
-int cpu_cris_handle_mmu_fault (CPUCRISState *env, target_ulong address, int rw,
- int mmu_idx)
+int cpu_cris_handle_mmu_fault(CPUCRISState *env, target_ulong address, int rw,
+ int mmu_idx)
{
- struct cris_mmu_result res;
- int prot, miss;
- int r = -1;
- target_ulong phy;
-
- D(printf ("%s addr=%x pc=%x rw=%x\n", __func__, address, env->pc, rw));
- miss = cris_mmu_translate(&res, env, address & TARGET_PAGE_MASK,
- rw, mmu_idx, 0);
- if (miss)
- {
- if (env->exception_index == EXCP_BUSFAULT)
- cpu_abort(env,
- "CRIS: Illegal recursive bus fault."
- "addr=%x rw=%d\n",
- address, rw);
-
- env->pregs[PR_EDA] = address;
- env->exception_index = EXCP_BUSFAULT;
- env->fault_vector = res.bf_vec;
- r = 1;
- }
- else
- {
- /*
- * Mask off the cache selection bit. The ETRAX busses do not
- * see the top bit.
- */
- phy = res.phy & ~0x80000000;
- prot = res.prot;
- tlb_set_page(env, address & TARGET_PAGE_MASK, phy,
- prot, mmu_idx, TARGET_PAGE_SIZE);
- r = 0;
- }
- if (r > 0)
- D_LOG("%s returns %d irqreq=%x addr=%x phy=%x vec=%x pc=%x\n",
- __func__, r, env->interrupt_request, address, res.phy,
- res.bf_vec, env->pc);
- return r;
+ struct cris_mmu_result res;
+ int prot, miss;
+ int r = -1;
+ target_ulong phy;
+
+ D(printf("%s addr=%x pc=%x rw=%x\n", __func__, address, env->pc, rw));
+ miss = cris_mmu_translate(&res, env, address & TARGET_PAGE_MASK,
+ rw, mmu_idx, 0);
+ if (miss) {
+ if (env->exception_index == EXCP_BUSFAULT) {
+ cpu_abort(env,
+ "CRIS: Illegal recursive bus fault."
+ "addr=%x rw=%d\n",
+ address, rw);
+ }
+
+ env->pregs[PR_EDA] = address;
+ env->exception_index = EXCP_BUSFAULT;
+ env->fault_vector = res.bf_vec;
+ r = 1;
+ } else {
+ /*
+ * Mask off the cache selection bit. The ETRAX busses do not
+ * see the top bit.
+ */
+ phy = res.phy & ~0x80000000;
+ prot = res.prot;
+ tlb_set_page(env, address & TARGET_PAGE_MASK, phy,
+ prot, mmu_idx, TARGET_PAGE_SIZE);
+ r = 0;
+ }
+ if (r > 0) {
+ D_LOG("%s returns %d irqreq=%x addr=%x phy=%x vec=%x pc=%x\n",
+ __func__, r, env->interrupt_request, address, res.phy,
+ res.bf_vec, env->pc);
+ }
+ return r;
}
static void do_interruptv10(CPUCRISState *env)
{
- int ex_vec = -1;
-
- D_LOG( "exception index=%d interrupt_req=%d\n",
- env->exception_index,
- env->interrupt_request);
-
- assert(!(env->pregs[PR_CCS] & PFIX_FLAG));
- switch (env->exception_index)
- {
- case EXCP_BREAK:
- /* These exceptions are genereated by the core itself.
- ERP should point to the insn following the brk. */
- ex_vec = env->trap_vector;
- env->pregs[PRV10_BRP] = env->pc;
- break;
-
- case EXCP_NMI:
- /* NMI is hardwired to vector zero. */
- ex_vec = 0;
- env->pregs[PR_CCS] &= ~M_FLAG_V10;
- env->pregs[PRV10_BRP] = env->pc;
- break;
-
- case EXCP_BUSFAULT:
- cpu_abort(env, "Unhandled busfault");
- break;
-
- default:
- /* The interrupt controller gives us the vector. */
- ex_vec = env->interrupt_vector;
- /* Normal interrupts are taken between
- TB's. env->pc is valid here. */
- env->pregs[PR_ERP] = env->pc;
- break;
- }
-
- if (env->pregs[PR_CCS] & U_FLAG) {
- /* Swap stack pointers. */
- env->pregs[PR_USP] = env->regs[R_SP];
- env->regs[R_SP] = env->ksp;
- }
-
- /* Now that we are in kernel mode, load the handlers address. */
- env->pc = cpu_ldl_code(env, env->pregs[PR_EBP] + ex_vec * 4);
- env->locked_irq = 1;
- env->pregs[PR_CCS] |= F_FLAG_V10; /* set F. */
-
- qemu_log_mask(CPU_LOG_INT, "%s isr=%x vec=%x ccs=%x pid=%d erp=%x\n",
- __func__, env->pc, ex_vec,
- env->pregs[PR_CCS],
- env->pregs[PR_PID],
- env->pregs[PR_ERP]);
+ int ex_vec = -1;
+
+ D_LOG("exception index=%d interrupt_req=%d\n",
+ env->exception_index,
+ env->interrupt_request);
+
+ assert(!(env->pregs[PR_CCS] & PFIX_FLAG));
+ switch (env->exception_index) {
+ case EXCP_BREAK:
+ /* These exceptions are genereated by the core itself.
+ ERP should point to the insn following the brk. */
+ ex_vec = env->trap_vector;
+ env->pregs[PRV10_BRP] = env->pc;
+ break;
+
+ case EXCP_NMI:
+ /* NMI is hardwired to vector zero. */
+ ex_vec = 0;
+ env->pregs[PR_CCS] &= ~M_FLAG_V10;
+ env->pregs[PRV10_BRP] = env->pc;
+ break;
+
+ case EXCP_BUSFAULT:
+ cpu_abort(env, "Unhandled busfault");
+ break;
+
+ default:
+ /* The interrupt controller gives us the vector. */
+ ex_vec = env->interrupt_vector;
+ /* Normal interrupts are taken between
+ TB's. env->pc is valid here. */
+ env->pregs[PR_ERP] = env->pc;
+ break;
+ }
+
+ if (env->pregs[PR_CCS] & U_FLAG) {
+ /* Swap stack pointers. */
+ env->pregs[PR_USP] = env->regs[R_SP];
+ env->regs[R_SP] = env->ksp;
+ }
+
+ /* Now that we are in kernel mode, load the handlers address. */
+ env->pc = cpu_ldl_code(env, env->pregs[PR_EBP] + ex_vec * 4);
+ env->locked_irq = 1;
+ env->pregs[PR_CCS] |= F_FLAG_V10; /* set F. */
+
+ qemu_log_mask(CPU_LOG_INT, "%s isr=%x vec=%x ccs=%x pid=%d erp=%x\n",
+ __func__, env->pc, ex_vec,
+ env->pregs[PR_CCS],
+ env->pregs[PR_PID],
+ env->pregs[PR_ERP]);
}
void do_interrupt(CPUCRISState *env)
{
- int ex_vec = -1;
-
- if (env->pregs[PR_VR] < 32)
- return do_interruptv10(env);
-
- D_LOG( "exception index=%d interrupt_req=%d\n",
- env->exception_index,
- env->interrupt_request);
-
- switch (env->exception_index)
- {
- case EXCP_BREAK:
- /* These exceptions are genereated by the core itself.
- ERP should point to the insn following the brk. */
- ex_vec = env->trap_vector;
- env->pregs[PR_ERP] = env->pc;
- break;
-
- case EXCP_NMI:
- /* NMI is hardwired to vector zero. */
- ex_vec = 0;
- env->pregs[PR_CCS] &= ~M_FLAG_V32;
- env->pregs[PR_NRP] = env->pc;
- break;
-
- case EXCP_BUSFAULT:
- ex_vec = env->fault_vector;
- env->pregs[PR_ERP] = env->pc;
- break;
-
- default:
- /* The interrupt controller gives us the vector. */
- ex_vec = env->interrupt_vector;
- /* Normal interrupts are taken between
- TB's. env->pc is valid here. */
- env->pregs[PR_ERP] = env->pc;
- break;
- }
-
- /* Fill in the IDX field. */
- env->pregs[PR_EXS] = (ex_vec & 0xff) << 8;
-
- if (env->dslot) {
- D_LOG("excp isr=%x PC=%x ds=%d SP=%x"
- " ERP=%x pid=%x ccs=%x cc=%d %x\n",
- ex_vec, env->pc, env->dslot,
- env->regs[R_SP],
- env->pregs[PR_ERP], env->pregs[PR_PID],
- env->pregs[PR_CCS],
- env->cc_op, env->cc_mask);
- /* We loose the btarget, btaken state here so rexec the
- branch. */
- env->pregs[PR_ERP] -= env->dslot;
- /* Exception starts with dslot cleared. */
- env->dslot = 0;
- }
+ int ex_vec = -1;
+
+ if (env->pregs[PR_VR] < 32) {
+ return do_interruptv10(env);
+ }
+
+ D_LOG("exception index=%d interrupt_req=%d\n",
+ env->exception_index,
+ env->interrupt_request);
+
+ switch (env->exception_index) {
+ case EXCP_BREAK:
+ /* These exceptions are genereated by the core itself.
+ ERP should point to the insn following the brk. */
+ ex_vec = env->trap_vector;
+ env->pregs[PR_ERP] = env->pc;
+ break;
+
+ case EXCP_NMI:
+ /* NMI is hardwired to vector zero. */
+ ex_vec = 0;
+ env->pregs[PR_CCS] &= ~M_FLAG_V32;
+ env->pregs[PR_NRP] = env->pc;
+ break;
+
+ case EXCP_BUSFAULT:
+ ex_vec = env->fault_vector;
+ env->pregs[PR_ERP] = env->pc;
+ break;
+
+ default:
+ /* The interrupt controller gives us the vector. */
+ ex_vec = env->interrupt_vector;
+ /* Normal interrupts are taken between
+ TB's. env->pc is valid here. */
+ env->pregs[PR_ERP] = env->pc;
+ break;
+ }
+
+ /* Fill in the IDX field. */
+ env->pregs[PR_EXS] = (ex_vec & 0xff) << 8;
+
+ if (env->dslot) {
+ D_LOG("excp isr=%x PC=%x ds=%d SP=%x"
+ " ERP=%x pid=%x ccs=%x cc=%d %x\n",
+ ex_vec, env->pc, env->dslot,
+ env->regs[R_SP],
+ env->pregs[PR_ERP], env->pregs[PR_PID],
+ env->pregs[PR_CCS],
+ env->cc_op, env->cc_mask);
+ /* We loose the btarget, btaken state here so rexec the
+ branch. */
+ env->pregs[PR_ERP] -= env->dslot;
+ /* Exception starts with dslot cleared. */
+ env->dslot = 0;
+ }
- if (env->pregs[PR_CCS] & U_FLAG) {
- /* Swap stack pointers. */
- env->pregs[PR_USP] = env->regs[R_SP];
- env->regs[R_SP] = env->ksp;
- }
-
- /* Apply the CRIS CCS shift. Clears U if set. */
- cris_shift_ccs(env);
-
- /* Now that we are in kernel mode, load the handlers address.
- This load may not fault, real hw leaves that behaviour as
- undefined. */
- env->pc = cpu_ldl_code(env, env->pregs[PR_EBP] + ex_vec * 4);
-
- /* Clear the excption_index to avoid spurios hw_aborts for recursive
- bus faults. */
- env->exception_index = -1;
-
- D_LOG("%s isr=%x vec=%x ccs=%x pid=%d erp=%x\n",
- __func__, env->pc, ex_vec,
- env->pregs[PR_CCS],
- env->pregs[PR_PID],
- env->pregs[PR_ERP]);
+ if (env->pregs[PR_CCS] & U_FLAG) {
+ /* Swap stack pointers. */
+ env->pregs[PR_USP] = env->regs[R_SP];
+ env->regs[R_SP] = env->ksp;
+ }
+
+ /* Apply the CRIS CCS shift. Clears U if set. */
+ cris_shift_ccs(env);
+
+ /* Now that we are in kernel mode, load the handlers address.
+ This load may not fault, real hw leaves that behaviour as
+ undefined. */
+ env->pc = cpu_ldl_code(env, env->pregs[PR_EBP] + ex_vec * 4);
+
+ /* Clear the excption_index to avoid spurios hw_aborts for recursive
+ bus faults. */
+ env->exception_index = -1;
+
+ D_LOG("%s isr=%x vec=%x ccs=%x pid=%d erp=%x\n",
+ __func__, env->pc, ex_vec,
+ env->pregs[PR_CCS],
+ env->pregs[PR_PID],
+ env->pregs[PR_ERP]);
}
hwaddr cpu_get_phys_page_debug(CPUCRISState * env, target_ulong addr)
{
- uint32_t phy = addr;
- struct cris_mmu_result res;
- int miss;
-
- miss = cris_mmu_translate(&res, env, addr, 0, 0, 1);
- /* If D TLB misses, try I TLB. */
- if (miss) {
- miss = cris_mmu_translate(&res, env, addr, 2, 0, 1);
- }
-
- if (!miss)
- phy = res.phy;
- D(fprintf(stderr, "%s %x -> %x\n", __func__, addr, phy));
- return phy;
+ uint32_t phy = addr;
+ struct cris_mmu_result res;
+ int miss;
+
+ miss = cris_mmu_translate(&res, env, addr, 0, 0, 1);
+ /* If D TLB misses, try I TLB. */
+ if (miss) {
+ miss = cris_mmu_translate(&res, env, addr, 2, 0, 1);
+ }
+
+ if (!miss) {
+ phy = res.phy;
+ }
+ D(fprintf(stderr, "%s %x -> %x\n", __func__, addr, phy));
+ return phy;
}
#endif
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-18 12:41:57 +0000