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Fix off-by-one unwinding error.

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4570 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
pbrook 2008-05-25 00:36:06 +00:00
parent 8bba5c81b1
commit 9b7b85d260
11 changed files with 12 additions and 49 deletions
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12
dyngen-exec.h
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@ -287,4 +287,16 @@ extern int __op_jmp0, __op_jmp1, __op_jmp2, __op_jmp3;
#error unsupported CPU
#endif
/* The return address may point to the start of the next instruction.
Subtracting one gets us the call instruction itself. */
#if defined(__s390__)
# define GETPC() ((void*)(((unsigned long)__builtin_return_address(0) & 0x7fffffffUL) - 1))
#elif defined(__arm__)
/* Thumb return addresses have the low bit set, so we need to subtract two.
This is still safe in ARM mode because instructions are 4 bytes. */
# define GETPC() ((void *)((unsigned long)__builtin_return_address(0) - 2))
#else
# define GETPC() ((void *)((unsigned long)__builtin_return_address(0) - 1))
#endif
#endif /* !defined(__DYNGEN_EXEC_H__) */