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Another fault handler instance where we have to trick gcc4 not to

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optimize our code away.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20450 a95241bf-73f2-0310-859d-f6bbb57e9c96
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Ingo Weinhold
2007-03-28 15:59:51 +00:00
parent 1cda11801e
commit 3f51dabd08
1 changed files with 4 additions and 0 deletions
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src/system/kernel/arch/x86/arch_debug.c
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@@ -57,6 +57,10 @@ get_next_frame(addr_t ebp, addr_t *_next, addr_t *_eip)
{ {
// set fault handler, so that we can safely access user stacks // set fault handler, so that we can safely access user stacks
thread_get_current_thread()->fault_handler = (addr_t)&&error; thread_get_current_thread()->fault_handler = (addr_t)&&error;
// Fake goto to trick the compiler not to optimize the code at the label
// away.
if (ebp == 0)
goto error;
*_eip = ((struct stack_frame *)ebp)->return_address; *_eip = ((struct stack_frame *)ebp)->return_address;
*_next = (addr_t)((struct stack_frame *)ebp)->previous; *_next = (addr_t)((struct stack_frame *)ebp)->previous;