#include "gen_ia32_regalloc_if.h"
#include "bearch_ia32_t.h"
-#define MAXNUM_GPREG_ARGS 3
-#define MAXNUM_SSE_ARGS 8
-
/* this is the order of the assigned registers used for parameter passing */
-static const arch_register_t *gpreg_param_reg_fastcall[] = {
- &ia32_gp_regs[REG_ECX],
- &ia32_gp_regs[REG_EDX],
- NULL
-};
-
-static const arch_register_t *gpreg_param_reg_regparam[] = {
- &ia32_gp_regs[REG_EAX],
- &ia32_gp_regs[REG_EDX],
- &ia32_gp_regs[REG_ECX]
-};
-
-static const arch_register_t *gpreg_param_reg_this[] = {
- &ia32_gp_regs[REG_ECX],
- NULL,
- NULL
-};
-
-static const arch_register_t *fpreg_sse_param_reg_std[] = {
- &ia32_xmm_regs[REG_XMM0],
- &ia32_xmm_regs[REG_XMM1],
- &ia32_xmm_regs[REG_XMM2],
- &ia32_xmm_regs[REG_XMM3],
- &ia32_xmm_regs[REG_XMM4],
- &ia32_xmm_regs[REG_XMM5],
- &ia32_xmm_regs[REG_XMM6],
- &ia32_xmm_regs[REG_XMM7]
-};
-
-static const arch_register_t *fpreg_sse_param_reg_this[] = {
- NULL, /* in case of a "this" pointer, the first parameter must not be a float */
-};
-
-
-/* Mapping to store registers in firm nodes */
-
-struct ia32_irn_reg_assoc {
- const ir_node *irn;
- const arch_register_t *reg;
-};
-
-int ia32_cmp_irn_reg_assoc(const void *a, const void *b, size_t len) {
- const struct ia32_irn_reg_assoc *x = a;
- const struct ia32_irn_reg_assoc *y = b;
- (void) len;
-
- return x->irn != y->irn;
-}
-
-static struct ia32_irn_reg_assoc *get_irn_reg_assoc(const ir_node *irn, set *reg_set) {
- struct ia32_irn_reg_assoc templ;
- unsigned int hash;
-
- templ.irn = irn;
- templ.reg = NULL;
- hash = hash_irn(irn);
-
- return set_insert(reg_set, &templ, sizeof(templ), hash);
-}
-
-void ia32_set_firm_reg(ir_node *irn, const arch_register_t *reg, set *reg_set) {
- struct ia32_irn_reg_assoc *assoc = get_irn_reg_assoc(irn, reg_set);
- assoc->reg = reg;
-}
-
-const arch_register_t *ia32_get_firm_reg(const ir_node *irn, set *reg_set) {
- struct ia32_irn_reg_assoc *assoc = get_irn_reg_assoc(irn, reg_set);
- return assoc->reg;
-}
void ia32_build_16bit_reg_map(pmap *reg_map) {
pmap_insert(reg_map, &ia32_gp_regs[REG_EAX], "ax");
return e->value;
}
-
-/**
- * Returns the register for parameter nr.
- */
-const arch_register_t *ia32_get_RegParam_reg(unsigned cc, size_t nr,
- const ir_mode *mode)
-{
- if ((cc & cc_this_call) && nr == 0)
- return gpreg_param_reg_this[0];
-
- if (! (cc & cc_reg_param))
- return NULL;
-
- if (mode_is_float(mode)) {
- if (!ia32_cg_config.use_sse2 || (cc & cc_fpreg_param) == 0)
- return NULL;
- if (nr >= MAXNUM_SSE_ARGS)
- return NULL;
-
- if (cc & cc_this_call) {
- return fpreg_sse_param_reg_this[nr];
- }
- return fpreg_sse_param_reg_std[nr];
- } else if (mode_is_int(mode) || mode_is_reference(mode)) {
- unsigned num_regparam;
-
- if (get_mode_size_bits(mode) > 32)
- return NULL;
-
- if (nr >= MAXNUM_GPREG_ARGS)
- return NULL;
-
- if (cc & cc_this_call) {
- return gpreg_param_reg_this[nr];
- }
- num_regparam = cc & ~cc_bits;
- if (num_regparam == 0) {
- /* default fastcall */
- return gpreg_param_reg_fastcall[nr];
- }
- if (nr < num_regparam)
- return gpreg_param_reg_regparam[nr];
- return NULL;
- }
-
- panic("unknown argument mode");
-}