/*
- * 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 "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 */
+#define MAXNUM_GPREG_ARGS 3
+#define MAXNUM_SSE_ARGS 8
-/* this is the order of the assigned registers usesd for parameter passing */
+/* this is the order of the assigned registers used for parameter passing */
-const arch_register_t *gpreg_param_reg_std[] = {
- &ia32_gp_regs[REG_EAX],
- &ia32_gp_regs[REG_EDX],
+static const arch_register_t *gpreg_param_reg_fastcall[] = {
&ia32_gp_regs[REG_ECX],
- &ia32_gp_regs[REG_EBX],
- &ia32_gp_regs[REG_EDI],
- &ia32_gp_regs[REG_ESI]
+ &ia32_gp_regs[REG_EDX],
+ NULL
};
-const arch_register_t *gpreg_param_reg_this[] = {
- &ia32_gp_regs[REG_ECX],
+static const arch_register_t *gpreg_param_reg_regparam[] = {
&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]
+ &ia32_gp_regs[REG_ECX]
};
-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 *gpreg_param_reg_this[] = {
+ &ia32_gp_regs[REG_ECX],
+ NULL,
+ NULL
};
-const arch_register_t *fpreg_sse_param_reg_this[] = {
- NULL, /* in case of a "this" pointer, the first parameter must not be a float */
+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_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 */
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;
}
templ.irn = irn;
templ.reg = NULL;
- hash = nodeset_hash(irn);
+ hash = hash_irn(irn);
return set_insert(reg_set, &templ, sizeof(templ), hash);
}
return e->value;
}
-/**
- * Check all parameters and determine the maximum number of parameters
- * to pass in gp regs resp. in fp regs.
- */
-int ia32_get_n_regparam_class(ia32_code_gen_t *cg, int n, ir_mode **modes)
-{
- int i;
- int max_fp_regs;
- int n_int = 0;
- int n_float = 0;
-
- if(USE_SSE2(cg)) {
- max_fp_regs = maxnum_sse_args;
- } else {
- max_fp_regs = 0;
- }
-
- for (i = 0; i < n; i++) {
- if (mode_is_int(modes[i]) || mode_is_reference(modes[i])) {
- ++n_int;
- } else if (mode_is_float(modes[i])) {
- ++n_float;
- } else {
- panic("Unknown parameter mode encountered");
- }
-
- if (n_int >= maxnum_gpreg_args || n_float >= max_fp_regs)
- break;
- }
-
- return i;
-}
-
-
/**
* 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)
+const arch_register_t *ia32_get_RegParam_reg(unsigned cc, size_t nr,
+ const ir_mode *mode)
{
- if(mode_is_float(mode)) {
- if(!USE_SSE2(cg))
+ 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;
- assert(nr < maxnum_sse_args);
- if(cc & cc_this_call) {
+ 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;
- assert(mode_is_int(mode) || mode_is_reference(mode));
+ if (get_mode_size_bits(mode) > 32)
+ return NULL;
- if(cc & cc_this_call) {
- assert(nr < maxnum_gpreg_args);
- return gpreg_param_reg_this[nr];
+ 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;
}
- return gpreg_param_reg_std[nr];
+
+ panic("unknown argument mode");
}
projects / libfirm / blobdiff