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Check and skip 67h address size prefix for x32

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PR libjava/53973
	* include/x86_64-signal.h (CHECK_67H_PREFIX): New.
	(HANDLE_DIVIDE_OVERFLOW): Check and and skip 67h address size
	prefix if CHECK_67H_PREFIX is 1.  Use ULL suffix for 64-bit
	integer.

From-SVN: r189621
This commit is contained in:
H.J. Lu 2012-07-18 17:38:37 +00:00 committed by H.J. Lu
parent 9df3cfeac2
commit e4f9276749
2 changed files with 20 additions and 2 deletions
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8
libjava/ChangeLog
View File

@ -1,3 +1,11 @@
2012-07-18 H.J. Lu <hongjiu.lu@intel.com>
PR libjava/53973
* include/x86_64-signal.h (CHECK_67H_PREFIX): New.
(HANDLE_DIVIDE_OVERFLOW): Check and and skip 67h address size
prefix if CHECK_67H_PREFIX is 1. Use ULL suffix for 64-bit
integer.
2012-06-20 David Edelsohn <dje.gcc@gmail.com>
Alan Modra <amodra@gmail.com>

14
libjava/include/x86_64-signal.h
View File

@ -21,6 +21,12 @@ details. */
#define HANDLE_SEGV 1
#define HANDLE_FPE 1
#ifdef __ILP32__
# define CHECK_67H_PREFIX 1
#else
# define CHECK_67H_PREFIX 0
#endif
#define SIGNAL_HANDLER(_name) \
static void _Jv_##_name (int, siginfo_t *, \
void *_p __attribute__ ((__unused__)))
@ -47,6 +53,10 @@ do \
\
bool _is_64_bit = false; \
\
/* Check and skip 67h address size prefix if needed. */ \
if (CHECK_67H_PREFIX && _rip[0] == 0x67) \
_rip++; \
\
if ((_rip[0] & 0xf0) == 0x40) /* REX byte present. */ \
{ \
unsigned char _rex = _rip[0] & 0x0f; \
@ -64,10 +74,10 @@ do \
{ \
if (_is_64_bit) \
_min_value_dividend = \
_gregs[REG_RAX] == (greg_t)0x8000000000000000UL; \
_gregs[REG_RAX] == (greg_t)0x8000000000000000ULL; \
else \
_min_value_dividend = \
(_gregs[REG_RAX] & 0xffffffff) == (greg_t)0x80000000UL; \
(_gregs[REG_RAX] & 0xffffffff) == (greg_t)0x80000000ULL; \
} \
\
if (_min_value_dividend) \