X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fia32%2Fia32_map_regs.c;h=cb09bf1418eae00afea8589f1fdf99969fd38efa;hb=dabecf7efb18569c6f06f047c68d124f108cfced;hp=765ce9f6a4982f9e88c3e7199595f6df1b24a69e;hpb=8cb8fe7d9d69a9bd06365823d5d5f68d051f6db0;p=libfirm

diff --git a/ir/be/ia32/ia32_map_regs.c b/ir/be/ia32/ia32_map_regs.c
index 765ce9f6a..cb09bf141 100644
--- a/ir/be/ia32/ia32_map_regs.c
+++ b/ir/be/ia32/ia32_map_regs.c
@@ -1,5 +1,5 @@
 /*
- * 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.
  *
@@ -23,225 +23,63 @@
  * @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 "../benodesets.h"
-
-static int maxnum_gpreg_args = 3;   /* maximum number of int arguments passed in registers; default 3 */
-static int maxnum_fpreg_args = 5;   /* maximum number of float arguments passed in registers; default 5 */
-
-/* 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_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_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);
+#include "bearch_ia32_t.h"
+
+/* this is the order of the assigned registers used for parameter passing */
+
+
+void ia32_build_16bit_reg_map(const char *reg_map[])
+{
+	memset(reg_map, 0, sizeof(reg_map[0]) * N_ia32_gp_REGS);
+	reg_map[REG_GP_EAX] = "ax";
+	reg_map[REG_GP_EBX] = "bx";
+	reg_map[REG_GP_ECX] = "cx";
+	reg_map[REG_GP_EDX] = "dx";
+	reg_map[REG_GP_ESI] = "si";
+	reg_map[REG_GP_EDI] = "di";
+	reg_map[REG_GP_EBP] = "bp";
+	reg_map[REG_GP_ESP] = "sp";
 }
 
-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;
+void ia32_build_8bit_reg_map(const char *reg_map[])
+{
+	memset(reg_map, 0, sizeof(reg_map[0]) * N_ia32_gp_REGS);
+	reg_map[REG_GP_EAX] = "al";
+	reg_map[REG_GP_EBX] = "bl";
+	reg_map[REG_GP_ECX] = "cl";
+	reg_map[REG_GP_EDX] = "dl";
 }
 
-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_8bit_reg_map_high(const char *reg_map[])
+{
+	memset(reg_map, 0, sizeof(reg_map[0]) * N_ia32_gp_REGS);
+	reg_map[REG_GP_EAX], "ah";
+	reg_map[REG_GP_EBX], "bh";
+	reg_map[REG_GP_ECX], "ch";
+	reg_map[REG_GP_EDX], "dh";
 }
 
-void ia32_build_16bit_reg_map(pmap *reg_map) {
-	pmap_insert(reg_map, &ia32_gp_regs[REG_EAX], "ax");
-	pmap_insert(reg_map, &ia32_gp_regs[REG_EBX], "bx");
-	pmap_insert(reg_map, &ia32_gp_regs[REG_ECX], "cx");
-	pmap_insert(reg_map, &ia32_gp_regs[REG_EDX], "dx");
-	pmap_insert(reg_map, &ia32_gp_regs[REG_ESI], "si");
-	pmap_insert(reg_map, &ia32_gp_regs[REG_EDI], "di");
-	pmap_insert(reg_map, &ia32_gp_regs[REG_EBP], "bp");
-	pmap_insert(reg_map, &ia32_gp_regs[REG_ESP], "sp");
-}
-
-void ia32_build_8bit_reg_map(pmap *reg_map) {
-	pmap_insert(reg_map, &ia32_gp_regs[REG_EAX], "al");
-	pmap_insert(reg_map, &ia32_gp_regs[REG_EBX], "bl");
-	pmap_insert(reg_map, &ia32_gp_regs[REG_ECX], "cl");
-	pmap_insert(reg_map, &ia32_gp_regs[REG_EDX], "dl");
-}
+const char *ia32_get_mapped_reg_name(const char *reg_map[], const arch_register_t *reg)
+{
+	const char *name = reg_map[reg->index];
+	assert(reg->reg_class->index == CLASS_ia32_gp);
 
-const char *ia32_get_mapped_reg_name(pmap *reg_map, const arch_register_t *reg) {
-	pmap_entry *e = pmap_find(reg_map, (void *)reg);
-
-	//assert(e && "missing map init?");
-	if (! e) {
+	//assert(name && "missing map init?");
+	if (! name) {
 		printf("FIXME: ia32map_regs.c:122: returning fake register name for ia32 with 32 register\n");
 		return reg->name;
 	}
 
-	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(int n, ir_mode **modes, int *n_int, int *n_float) {
-	int i, finished = 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 == maxnum_fpreg_args) {
-			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(int n, ir_mode **modes, long nr, unsigned cc) {
-	const arch_register_t **current_gpreg_param_reg;
-	const arch_register_t **current_fpreg_param_reg;
-	const arch_register_t  *param_reg = NULL;
-	int n_gpregparam = 0;
-	int n_fpregparam = 0;
-	int i, done      = 0;
-	int cur_gp_idx   = 0;
-	int cur_fp_idx   = 0;
-	int biggest_n    = ia32_get_n_regparam_class(n, modes, &n_gpregparam, &n_fpregparam);
-
-	/* Check if parameter #nr is in range for passing in register */
-	if (nr <= biggest_n) {
-		current_gpreg_param_reg = gpreg_param_reg_std;
-		current_fpreg_param_reg = fpreg_param_reg_std;
-
-		if (cc & cc_this_call) {
-			current_gpreg_param_reg = gpreg_param_reg_this;
-			current_fpreg_param_reg = fpreg_param_reg_this;
-		}
-
-		/* loop over all parameters and determine whether its a int or float register parameter */
-		for (i = 0; i < nr && !done && (cc & cc_reg_param); i++) {
-			if ((mode_is_int(modes[i]) || mode_is_reference(modes[i])) && cur_gp_idx < maxnum_gpreg_args) {
-				/* param can be passed in general purpose register and we have some registers left */
-				cur_gp_idx++;
-			}
-			else if (mode_is_float(modes[i]) && cur_fp_idx < maxnum_fpreg_args) {
-				/* param can be passed in floating point register and we have some registers left */
-				assert(current_gpreg_param_reg[cur_fp_idx] && "'this' pointer cannot be passed as float");
-				cur_fp_idx++;
-			}
-		}
-
-		/* now: i == nr, that's the parameter requirement we want */
-		if ((mode_is_int(modes[i]) || mode_is_reference(modes[i])) && cur_gp_idx < maxnum_gpreg_args) {
-			/* parameter #nr can be passed in general purpose register */
-			param_reg = current_gpreg_param_reg[i];
-		}
-		else if (mode_is_float(modes[i]) && cur_fp_idx < maxnum_fpreg_args) {
-			/* parameter #nr can be passed in floating point register */
-			param_reg = current_fpreg_param_reg[i];
-		}
-		else {
-			assert(0 && "This should not happen!");
-		}
-	}
-
-	return param_reg;
+	return name;
 }