Even with the patch, the DSISR may not have its 'write' bit set
correctly (it tends not to be set if the fault was caused by
something other than a protection violation.)
-
+
Caveat callers. */
#ifndef PT_DAR
-#define PT_DAR 41
+#define PT_DAR 41
#endif
#ifndef PT_DSISR
-#define PT_DSISR 42
+#define PT_DSISR 42
#endif
void arch_init() {
}
-os_vm_address_t
+os_vm_address_t
arch_get_bad_addr(int sig, siginfo_t *code, os_context_t *context)
{
unsigned int *pc = (unsigned int *)(*os_context_pc_addr(context));
os_vm_address_t addr;
-
-
+
+
/* Make sure it's not the pc thats bogus, and that it was lisp code */
/* that caused the fault. */
if ((((unsigned long)pc) & 3) != 0 ||
- ((pc < READ_ONLY_SPACE_START ||
- pc >= READ_ONLY_SPACE_START+READ_ONLY_SPACE_SIZE) &&
- ((lispobj *)pc < current_dynamic_space ||
- (lispobj *)pc >= current_dynamic_space + DYNAMIC_SPACE_SIZE)))
- return 0;
-
-
+ ((pc < READ_ONLY_SPACE_START ||
+ pc >= READ_ONLY_SPACE_START+READ_ONLY_SPACE_SIZE) &&
+ ((lispobj *)pc < current_dynamic_space ||
+ (lispobj *)pc >= current_dynamic_space + DYNAMIC_SPACE_SIZE)))
+ return 0;
+
+
addr = (os_vm_address_t) (*os_context_register_addr(context,PT_DAR));
return addr;
}
-
-void
+
+void
arch_skip_instruction(os_context_t *context)
{
char** pcptr;
}
-boolean
+boolean
arch_pseudo_atomic_atomic(os_context_t *context)
{
return ((*os_context_register_addr(context,reg_ALLOC)) & 4);
#define PSEUDO_ATOMIC_INTERRUPTED_BIAS 0x7f000000
-void
+void
arch_set_pseudo_atomic_interrupted(os_context_t *context)
{
- *os_context_register_addr(context,reg_NL3)
- += PSEUDO_ATOMIC_INTERRUPTED_BIAS;
+ *os_context_register_addr(context,reg_NL3)
+ += PSEUDO_ATOMIC_INTERRUPTED_BIAS;
}
-unsigned long
+unsigned long
arch_install_breakpoint(void *pc)
{
unsigned long *ptr = (unsigned long *)pc;
return result;
}
-void
+void
arch_remove_breakpoint(void *pc, unsigned long orig_inst)
{
*(unsigned long *)pc = orig_inst;
static unsigned long *skipped_break_addr, displaced_after_inst;
static sigset_t orig_sigmask;
-void
+void
arch_do_displaced_inst(os_context_t *context,unsigned int orig_inst)
{
/* not sure how we ensure that we get the breakpoint reinstalled
* after doing this -dan */
unsigned long *pc = (unsigned long *)(*os_context_pc_addr(context));
-
+
orig_sigmask = *os_context_sigmask_addr(context);
sigaddset_blockable(os_context_sigmask_addr(context));
-
+
*pc = orig_inst;
os_flush_icache((os_vm_address_t) pc, sizeof(unsigned long));
skipped_break_addr = pc;
}
-static void
+static void
sigtrap_handler(int signal, siginfo_t *siginfo, os_context_t *context)
{
u32 code;
#endif
code=*((u32 *)(*os_context_pc_addr(context)));
if (code == ((3 << 26) | (16 << 21) | (reg_ALLOC << 16))) {
- /* twlti reg_ALLOC,0 - check for deferred interrupt */
- *os_context_register_addr(context,reg_ALLOC)
- -= PSEUDO_ATOMIC_INTERRUPTED_BIAS;
- arch_skip_instruction(context);
- /* interrupt or GC was requested in PA; now we're done with the
- PA section we may as well get around to it */
- interrupt_handle_pending(context);
- return;
-
+ /* twlti reg_ALLOC,0 - check for deferred interrupt */
+ *os_context_register_addr(context,reg_ALLOC)
+ -= PSEUDO_ATOMIC_INTERRUPTED_BIAS;
+ arch_skip_instruction(context);
+ /* interrupt or GC was requested in PA; now we're done with the
+ PA section we may as well get around to it */
+ interrupt_handle_pending(context);
+ return;
+
}
if ((code >> 16) == ((3 << 10) | (6 << 5))) {
- /* twllei reg_ZERO,N will always trap if reg_ZERO = 0 */
- int trap = code & 0x1f;
-
- switch (trap) {
- case trap_Halt:
- fake_foreign_function_call(context);
- lose("%%primitive halt called; the party is over.\n");
-
- case trap_Error:
- case trap_Cerror:
- interrupt_internal_error(signal, code, context, trap == trap_Cerror);
- break;
-
- case trap_PendingInterrupt:
- /* This is supposed run after WITHOUT-INTERRUPTS if there
- * were pending signals. */
- arch_skip_instruction(context);
- interrupt_handle_pending(context);
- break;
-
- case trap_Breakpoint:
- handle_breakpoint(signal, code, context);
- break;
-
- case trap_FunEndBreakpoint:
- *os_context_pc_addr(context)
- =(int)handle_fun_end_breakpoint(signal, code, context);
- break;
-
- case trap_AfterBreakpoint:
- *skipped_break_addr = trap_Breakpoint;
- skipped_break_addr = NULL;
- *(unsigned long *)*os_context_pc_addr(context)
- = displaced_after_inst;
- *os_context_sigmask_addr(context)= orig_sigmask;
-
- os_flush_icache((os_vm_address_t) *os_context_pc_addr(context),
- sizeof(unsigned long));
- break;
-
- default:
- interrupt_handle_now(signal, code, context);
- break;
- }
+ /* twllei reg_ZERO,N will always trap if reg_ZERO = 0 */
+ int trap = code & 0x1f;
+
+ switch (trap) {
+ case trap_Halt:
+ fake_foreign_function_call(context);
+ lose("%%primitive halt called; the party is over.\n");
+
+ case trap_Error:
+ case trap_Cerror:
+ interrupt_internal_error(signal, code, context, trap == trap_Cerror);
+ break;
+
+ case trap_PendingInterrupt:
+ /* This is supposed run after WITHOUT-INTERRUPTS if there
+ * were pending signals. */
+ arch_skip_instruction(context);
+ interrupt_handle_pending(context);
+ break;
+
+ case trap_Breakpoint:
+ handle_breakpoint(signal, code, context);
+ break;
+
+ case trap_FunEndBreakpoint:
+ *os_context_pc_addr(context)
+ =(int)handle_fun_end_breakpoint(signal, code, context);
+ break;
+
+ case trap_AfterBreakpoint:
+ *skipped_break_addr = trap_Breakpoint;
+ skipped_break_addr = NULL;
+ *(unsigned long *)*os_context_pc_addr(context)
+ = displaced_after_inst;
+ *os_context_sigmask_addr(context)= orig_sigmask;
+
+ os_flush_icache((os_vm_address_t) *os_context_pc_addr(context),
+ sizeof(unsigned long));
+ break;
+
+ default:
+ interrupt_handle_now(signal, code, context);
+ break;
+ }
#ifdef LISP_FEATURE_DARWIN
- DARWIN_FIX_CONTEXT(context);
+ DARWIN_FIX_CONTEXT(context);
#endif
- return;
+ return;
}
if (((code >> 26) == 3) && (((code >> 21) & 31) == 24)) {
- interrupt_internal_error(signal, code, context, 0);
+ interrupt_internal_error(signal, code, context, 0);
#ifdef LISP_FEATURE_DARWIN
- DARWIN_FIX_CONTEXT(context);
+ DARWIN_FIX_CONTEXT(context);
#endif
- return;
+ return;
}
-
+
interrupt_handle_now(signal, code, context);
#ifdef LISP_FEATURE_DARWIN
/* Work around G5 bug */
* ori 13, 13, (low part of addr)
* mtctr 13
* bctr
- *
+ *
*/
int* inst_ptr;
unsigned long hi; /* Top 16 bits of address */
/*
* addis 13, 0, (hi part)
*/
-
+
inst = (15 << 26) | (LINKAGE_TEMP_REG << 21) | (0 << 16) | hi;
*inst_ptr++ = inst;
inst = (24 << 26) | (LINKAGE_TEMP_REG << 21) | (LINKAGE_TEMP_REG << 16) | lo;
*inst_ptr++ = inst;
-
+
/*
* mtctr 13
*/
*inst_ptr++ = inst;
-
+
os_flush_icache((os_vm_address_t) reloc_addr, (char*) inst_ptr - (char*) reloc_addr);
}
-void
+void
arch_write_linkage_table_ref(void * reloc_addr, void *target_addr)
{
*(unsigned long *)reloc_addr = (unsigned long)target_addr;
projects / sbcl.git / blobdiff