| author | pcpa <paulo.cesar.pereira.de.andrade@gmail.com> | 2012年12月20日 14:34:28 -0200 |
|---|---|---|
| committer | pcpa <paulo.cesar.pereira.de.andrade@gmail.com> | 2012年12月20日 14:34:28 -0200 |
| commit | 27513200220c6f08af454049561642ab587681fc (patch) | |
| tree | a2e1303803740ee6f77f8c00f31a5b168fe6b7a9 /lib/jit_ppc-cpu.c | |
| parent | a74318a1d715a7f9ce9c99ae81c3038645efcc10 (diff) | |
| download | lightning-27513200220c6f08af454049561642ab587681fc.tar.gz | |
| -rw-r--r-- | lib/jit_ppc-cpu.c | 17 |
diff --git a/lib/jit_ppc-cpu.c b/lib/jit_ppc-cpu.c index 0f9b343..868fcc1 100644 --- a/lib/jit_ppc-cpu.c +++ b/lib/jit_ppc-cpu.c @@ -16,7 +16,11 @@ */ #if PROTO -# define stack_framesize 80 +# define gpr_save_area 72 /* r14~r31 = 18 * 4 */ +# define fpr_save_area 0 /* FIXME extra fpr registers + * not used */ +# define alloca_offset -(gpr_save_area + fpr_save_area) +# define params_offset 56 # define ii(i) *_jit->pc.ui++ = i # define can_sign_extend_short_p(im) ((im) >= -32768 && (im) <= 32767) # define can_zero_extend_short_p(im) ((im) >= 0 && (im) <= 65535) @@ -2363,7 +2367,7 @@ _prolog(jit_state_t *_jit, jit_node_t *node) { unsigned long regno; - _jit->function->stack = ((_jit->function->self.alen - + _jit->function->stack = ((_jit->function->self.alen + params_offset - _jit->function->self.aoff) + 15) & -16; /* return address */ @@ -2376,8 +2380,12 @@ _prolog(jit_state_t *_jit, jit_node_t *node) STMW(rn(regno), _SP_REGNO, -(32 * 4) + rn(regno) * 4); stxi(8, _SP_REGNO, _R0_REGNO); - STWU(_SP_REGNO, _SP_REGNO, -(stack_framesize + _jit->function->stack + 16)); - addi(_FP_REGNO, _SP_REGNO, _jit->function->stack + 16); + + /* params >= %r31+56 + * alloca < %r31-80 */ + movr(_FP_REGNO, _SP_REGNO); + + STWU(_SP_REGNO, _SP_REGNO, -_jit->function->stack); } static void @@ -2385,7 +2393,6 @@ _epilog(jit_state_t *_jit, jit_node_t *node) { unsigned long regno; - //ldxi(_SP_REGNO, _SP_REGNO, 0); LWZ(_SP_REGNO, _SP_REGNO, 0); ldxi(_R0_REGNO, _SP_REGNO, 8); |