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Correct wrong test and update of arm thumb offset information.

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* lib/jit_arm-cpu.c, lib/jit_arm.c: Correct wrong test and update
	of the thumb offset information, when checking if needing to
	patch a jump from arm to thumb mode. The problem would happen when
	remapping the code buffer, and the new address being lower than
	the previous one.
This commit is contained in:
pcpa 2013-08-29 17:08:05 -03:00
parent ba182b139a
commit b8770059dc
3 changed files with 10 additions and 1 deletions
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8
ChangeLog
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@ -1,3 +1,11 @@
2013-08-29 Paulo Andrade <pcpa@gnu.org>
* lib/jit_arm-cpu.c, lib/jit_arm.c: Correct wrong test and update
of the thumb offset information, when checking if needing to
patch a jump from arm to thumb mode. The problem would happen when
remapping the code buffer, and the new address being lower than
the previous one.
2013-08-26 Paulo Andrade <pcpa@gnu.org>
* configure.ac: Extend FreeBSD test to also handle NetBSD.

2
lib/jit_arm-cpu.c
View file

@ -3755,7 +3755,7 @@ _patch_at(jit_state_t *_jit,
} u;
u.w = instr;
if (kind == arm_patch_jump) {
if (jit_thumb_p() && instr >= _jitc->thumb) {
if (jit_thumb_p() && (jit_uword_t)instr >= _jitc->thumb) {
code2thumb(thumb.s[0], thumb.s[1], u.s[0], u.s[1]);
if ((thumb.i & THUMB2_B) == THUMB2_B) {
d = ((label - instr) >> 1) - 2;

1
lib/jit_arm.c
View file

@ -810,6 +810,7 @@ _emit_code(jit_state_t *_jit)
} undo;
_jitc->function = NULL;
_jitc->thumb = 0;
jit_reglive_setup();