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Add new test case to check stack integrity on complex stack frames.

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* check/stack.ok, check/stack.tst: New files to test data
	integrity on a deep chain of stack frames.

	* lib/jit_arm.c, lib/jit_arm-cpu.c, lib/jit_mips.c,
	lib/jit_mips-cpu.c, lib/jit_ppc.c, lib/jit_ppc-cpu.c,
	lib/jit_x86.c, lib/jit_x86-cpu.c: Calculate _jit->function->stack
	in the emit stage, otherwise it will calculate it wrong if
	need to jit_allocai space to spill registers.

	* lib/lightning.c: Correct wrong offset when updating the
	"current" jit function pointer in the code that may need to
	allocate stack space to spill registers.

	* check/lightning.c: Correct off by one data space check.

	* check/Makefile.am: Update for new test case.
This commit is contained in:
pcpa 2012-12-19 18:07:12 -02:00
parent b43ea1f908
commit a74318a1d7
14 changed files with 387 additions and 29 deletions
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5
lib/jit_mips-cpu.c
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@ -2697,6 +2697,11 @@ _calli(jit_state_t *_jit, jit_word_t i0)
static void
_prolog(jit_state_t *_jit, jit_node_t *node)
{
_jit->function->stack = ((/* first 16 bytes must be allocated */
(_jit->function->self.alen > 16 ?
_jit->function->self.alen : 16) -
/* align stack at 8 bytes */
_jit->function->self.aoff) + 7) & -8;
/* callee save registers */
subi(_SP_REGNO, _SP_REGNO, stack_framesize);
#if __WORDSIZE == 32