/*
- * Copyright (C) 1995-2007 University of Karlsruhe. All right reserved.
+ * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved.
*
* This file is part of libFirm.
*
* @author Christian Wuerdig
* @version $Id$
*/
-#ifdef HAVE_CONFIG_H
#include "config.h"
-#endif
#include <stdlib.h>
#include "pmap.h"
+#include "error.h"
#include "ia32_map_regs.h"
#include "ia32_new_nodes.h"
+#include "ia32_architecture.h"
#include "gen_ia32_regalloc_if.h"
#include "bearch_ia32_t.h"
-#include "../benodesets.h"
-static int maxnum_gpreg_args = 3; /* maximum number of int arguments passed in registers; default 3 */
-static int maxnum_sse_args = 5; /* maximum number of float arguments passed in registers; default 5 */
+/* this is the order of the assigned registers used for parameter passing */
-/* this is the order of the assigned registers usesd for parameter passing */
-
-const arch_register_t *gpreg_param_reg_std[] = {
- &ia32_gp_regs[REG_EAX],
- &ia32_gp_regs[REG_EDX],
- &ia32_gp_regs[REG_ECX],
- &ia32_gp_regs[REG_EBX],
- &ia32_gp_regs[REG_EDI],
- &ia32_gp_regs[REG_ESI]
-};
-
-const arch_register_t *gpreg_param_reg_this[] = {
- &ia32_gp_regs[REG_ECX],
- &ia32_gp_regs[REG_EAX],
- &ia32_gp_regs[REG_EDX],
- &ia32_gp_regs[REG_EBX],
- &ia32_gp_regs[REG_EDI],
- &ia32_gp_regs[REG_ESI]
-};
-
-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]
-};
-
-const arch_register_t *fpreg_sse_param_reg_this[] = {
- NULL, /* in case of a "this" pointer, the first parameter must not be a float */
- &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]
-};
-
-
-
-/* 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;
-
- 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 = nodeset_hash(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;
}
-
-/**
- * Check all parameters and determine the maximum number of parameters
- * to pass in gp regs resp. in fp regs.
- *
- * @param n The number of parameters
- * @param modes The list of the parameter modes
- * @param n_int Holds the number of int parameters to be passed in regs after the call
- * @param n_float Holds the number of float parameters to be passed in regs after the call
- * @return The number of the last parameter to be passed in register
- */
-int ia32_get_n_regparam_class(ia32_code_gen_t *cg, int n, ir_mode **modes,
- int *n_int, int *n_float)
-{
- int i, finished = 0;
- int max_fp_regs;
-
- if(USE_SSE2(cg)) {
- max_fp_regs = maxnum_sse_args;
- } else {
- max_fp_regs = 0;
- }
-
- *n_int = 0;
- *n_float = 0;
-
- for (i = 0; i < n && !finished; i++) {
- if (mode_is_int(modes[i]) || mode_is_reference(modes[i])) {
- *n_int = *n_int + 1;
- }
- else if (mode_is_float(modes[i])) {
- *n_float = *n_float + 1;
- }
- else {
- finished = 1;
- }
-
- /* test for maximum */
- if (*n_int == maxnum_gpreg_args || *n_float == max_fp_regs) {
- finished = 1;
- }
- }
-
- return i - 1;
-}
-
-
-/**
- * Returns the register for parameter nr.
- *
- * @param n The number of parameters
- * @param modes The list of the parameter modes
- * @param nr The number of the parameter to return the requirements for
- * @param cc The calling convention
- * @return The register
- */
-const arch_register_t *ia32_get_RegParam_reg(ia32_code_gen_t *cg, unsigned cc,
- unsigned nr, ir_mode *mode)
-{
- if(mode_is_float(mode)) {
- if(!USE_SSE2(cg))
- return NULL;
- assert(nr < maxnum_sse_args);
- if(cc & cc_this_call) {
- return fpreg_sse_param_reg_this[nr];
- }
- return fpreg_sse_param_reg_std[nr];
- }
-
- assert(mode_is_int(mode) || mode_is_reference(mode));
-
- if(cc & cc_this_call) {
- assert(nr < maxnum_gpreg_args);
- return gpreg_param_reg_this[nr];
- }
- return gpreg_param_reg_std[nr];
-}
projects / libfirm / blobdiff