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Added arch_debug_get_stack_trace() that can be used to get a stack trace

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(the list of return addresses) for the current stack.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25204 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Ingo Weinhold 2008-04-27 02:54:27 +00:00
parent d4a5975f50
commit 4dd0a2c7b6
2 changed files with 43 additions and 5 deletions
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4
headers/private/kernel/arch/debug.h
View File

@ -21,8 +21,10 @@ extern "C" {
status_t arch_debug_init(kernel_args *args);
void *arch_debug_get_caller(void);
int32 arch_debug_get_stack_trace(addr_t* returnAddresses, int32 maxCount,
int32 skipFrames, bool userOnly);
bool arch_debug_contains_call(struct thread *thread, const char *symbol,
addr_t start, addr_t end);
addr_t start, addr_t end);
void arch_debug_save_registers(int *);
#ifdef __cplusplus

44
src/system/kernel/arch/x86/arch_debug.cpp
View File

@ -582,15 +582,51 @@ arch_debug_contains_call(struct thread *thread, const char *symbol,
void *
arch_debug_get_caller(void)
{
// It looks like you would get the wrong stack frame here, but
// since read_ebp() is an assembler inline macro, GCC seems to
// be smart enough to save its original value.
struct stack_frame *frame = (struct stack_frame *)x86_read_ebp();
return (void *)frame->previous->return_address;
}
int32
arch_debug_get_stack_trace(addr_t* returnAddresses, int32 maxCount,
int32 skipFrames, bool userOnly)
{
// always skip our own frame
skipFrames++;
struct thread* thread = thread_get_current_thread();
int32 count = 0;
addr_t ebp = x86_read_ebp();
bool onKernelStack = true;
while (ebp != 0 && count < maxCount) {
onKernelStack = onKernelStack
&& is_kernel_stack_address(thread, ebp);
addr_t eip;
addr_t nextEbp;
if (onKernelStack && is_iframe(thread, ebp)) {
struct iframe *frame = (struct iframe*)ebp;
eip = frame->eip;
nextEbp = frame->ebp;
} else {
if (get_next_frame(ebp, &nextEbp, &eip) != B_OK)
break;
}
if (skipFrames <= 0 && (!userOnly || IS_USER_ADDRESS(ebp)))
returnAddresses[count++] = eip;
else
skipFrames--;
ebp = nextEbp;
}
return count;
}
status_t
arch_debug_init(kernel_args *args)
{