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sparc: Add initial jit_va_ calls to sparc

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* lib/jit_sparc-cpu.c, lib/jit_sparc-fpu.c, lib/jit_sparc.c:
	Add base support to jit vararg functions to the sparc backend.
This commit is contained in:
pcpa 2015-05-20 14:33:31 -03:00
parent 9a90a28360
commit bd38cfa9c9
4 changed files with 64 additions and 0 deletions
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28
lib/jit_sparc-cpu.c
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@ -673,6 +673,10 @@ static jit_word_t _calli_p(jit_state_t*,jit_word_t);
static void _prolog(jit_state_t*,jit_node_t*);
# define epilog(node) _epilog(_jit, node)
static void _epilog(jit_state_t*,jit_node_t*);
#define vastart(r0) _vastart(_jit, r0)
static void _vastart(jit_state_t*, jit_int32_t);
#define vaarg(r0, r1) _vaarg(_jit, r0, r1)
static void _vaarg(jit_state_t*, jit_int32_t, jit_int32_t);
#define patch_at(jump, label) _patch_at(_jit, jump, label)
static void _patch_at(jit_state_t*,jit_word_t,jit_word_t);
#endif
@ -1672,6 +1676,11 @@ _prolog(jit_state_t *_jit, jit_node_t *node)
stxi_i(_jitc->function->aoffoff, _FP_REGNO, rn(reg));
jit_unget_reg(reg);
}
if (_jitc->function->self.call & jit_call_varargs) {
for (reg = _jitc->function->vagp; jit_arg_reg_p(reg); ++reg)
stxi(68 + reg * 4, _SP_REGNO, rn(_I0 + reg));
}
}
static void
@ -1702,6 +1711,25 @@ _epilog(jit_state_t *_jit, jit_node_t *node)
NOP();
}
static void
_vastart(jit_state_t *_jit, jit_int32_t r0)
{
/* Initialize stack pointer to the first stack argument. */
addi(r0, _SP_REGNO, 68 + _jitc->function->vagp * 4);
}
static void
_vaarg(jit_state_t *_jit, jit_int32_t r0, jit_int32_t r1)
{
assert(_jitc->function->self.call & jit_call_varargs);
/* Load argument. */
ldr(r0, r1);
/* Update vararg stack pointer. */
addi(r1, r1, 4);
}
static void
_patch_at(jit_state_t *_jit, jit_word_t instr, jit_word_t label)
{