Add new test case to check stack integrity on complex stack frames. - lightning.git - Portable just-in-time compiler library

Portable just-in-time compiler library

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author	pcpa <paulo.cesar.pereira.de.andrade@gmail.com>	2012年12月19日 18:07:12 -0200
committer	pcpa <paulo.cesar.pereira.de.andrade@gmail.com>	2012年12月19日 18:07:12 -0200
commit	a74318a1d715a7f9ce9c99ae81c3038645efcc10 (patch)
tree	5b13fe85aa14c298324b238c8e6140ee14f392b0 /lib/jit_x86-cpu.c
parent	b43ea1f908866baaf14586e6d048bff4dbf6db1f (diff)
download	lightning-a74318a1d715a7f9ce9c99ae81c3038645efcc10.tar.gz

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

* 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.

Diffstat (limited to 'lib/jit_x86-cpu.c')

-rw-r--r--

lib/jit_x86-cpu.c

1 files changed, 8 insertions, 4 deletions

diff --git a/lib/jit_x86-cpu.c b/lib/jit_x86-cpu.c
index ed02008..197f780 100644
--- a/lib/jit_x86-cpu.c
+++ b/lib/jit_x86-cpu.c

@@ -20,8 +20,6 @@

#if PROTO

# if __WORDSIZE == 32

-# define stack_alignment 4

-# define stack_framesize 20

# define ldi(u, v) ldi_i(u, v)

# define ldxi(u, v, w) ldxi_i(u, v, w)

# define sti(u, v) sti_i(u, v)

@@ -32,8 +30,6 @@

# define reg8_p(rn) \

((rn) >= _RAX_REGNO && (rn) <= _RBX_REGNO)

# else

-# define stack_alignment 8

-# define stack_framesize 56

# define ldi(u, v) ldi_l(u, v)

# define ldxi(u, v, w) ldxi_l(u, v, w)

# define sti(u, v) sti_l(u, v)

@@ -3070,6 +3066,14 @@ _jmpi(jit_state_t *_jit, jit_word_t i0)

static void

_prolog(jit_state_t *_jit, jit_node_t *node)

{

+#if __WORDSIZE == 32

+ _jit->function->stack = (((_jit->function->self.alen -

+ _jit->function->self.aoff) + 15) & -16) + 12;

+#else

+ _jit->function->stack = (((_jit->function->self.alen -

+ _jit->function->self.aoff) + 15) & -16) + 8;

+#endif

/* callee save registers */

subi(_RSP_REGNO, _RSP_REGNO, stack_framesize - sizeof(jit_word_t));

#if __WORDSIZE == 32

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