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| author | Mike Stump <mrs@gcc.gnu.org> | 1994-11-29 01:33:07 +0000 |
|---|---|---|
| committer | Mike Stump <mrs@gcc.gnu.org> | 1994-11-29 01:33:07 +0000 |
| commit | 56031823208468f061281130a7e67d6ccf1b5fd2 (patch) | |
| tree | 73402b2bca23eb75b3ea14960fd1b2d5ee1479f8 | |
| parent | db5ae43ff2ce49f1cbe66a0e16f4e079b702580b (diff) | |
| download | gcc-56031823208468f061281130a7e67d6ccf1b5fd2.zip gcc-56031823208468f061281130a7e67d6ccf1b5fd2.tar.gz gcc-56031823208468f061281130a7e67d6ccf1b5fd2.tar.bz2 | |
libgcc2.c (__register_exceptions): Find max ending of a segment for end, not min.
* libgcc2.c (__register_exceptions): Find max ending of a segment for
end, not min.
* libgcc2.c (__unwind_function): New function to support stack
unwinding on i[34]86 for g++ exception handling.
From-SVN: r8571
| -rw-r--r-- | gcc/libgcc2.c | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/gcc/libgcc2.c b/gcc/libgcc2.c index 44b4de5..5df5278 100644 --- a/gcc/libgcc2.c +++ b/gcc/libgcc2.c @@ -2254,13 +2254,39 @@ __register_exceptions (exception_table *table) { if (range->start < node->start) node->start = range->start; - if (range->end < node->end) + if (range->end > node->end) node->end = range->end; } node->next = exception_table_list; exception_table_list = node; } + +#ifdef __i386 +void +__unwind_function(void *ptr) +{ + asm("movl 8(%esp),%ecx"); + /* Undo current frame */ + asm("movl %ebp,%esp"); + asm("popl %ebp"); + asm("# like ret, but stay here"); + asm("addl $4,%esp"); + + /* Now, undo previous frame. */ + /* This is a test routine, as we have to dynamically probe to find out + what to pop for certain, this is just a guess. */ + asm("leal -16(%ebp),%esp"); + asm("pop %eax # really for popl %ebx"); + asm("pop %eax # really for popl %esi"); + asm("pop %eax # really for popl %edi"); + asm("movl %ebp,%esp"); + asm("popl %ebp"); + + asm("movl %ecx,0(%esp)"); + asm("ret"); +} +#endif #endif /* L_eh */ #ifdef L_pure |