X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fia32%2Fia32_map_regs.c;h=49110979b11f8bab8e98520d74523e4692bdbd6f;hb=0fbcef83aa6060534172bb13e71cdadb04428806;hp=e8169c8fd1bd4b4f13fe63ca1ea8ee61ed5c9f79;hpb=294764ce7bb590e7714ef1378d7eda9608dbef6e;p=libfirm

diff --git a/ir/be/ia32/ia32_map_regs.c b/ir/be/ia32/ia32_map_regs.c
index e8169c8fd..49110979b 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.
  *
@@ -23,9 +23,7 @@
  * @author      Christian Wuerdig
  * @version     $Id$
  */
-#ifdef HAVE_CONFIG_H
 #include "config.h"
-#endif
 
 #include <stdlib.h>
 
@@ -39,41 +37,29 @@
 #include "bearch_ia32_t.h"
 
 #define MAXNUM_GPREG_ARGS     3
-#define MAXNUM_SSE_ARGS       5
+#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],
@@ -84,6 +70,9 @@ const arch_register_t *fpreg_sse_param_reg_this[] = {
 	&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 */
@@ -165,30 +154,39 @@ const char *ia32_get_mapped_reg_name(pmap *reg_map, const arch_register_t *reg)
 const arch_register_t *ia32_get_RegParam_reg(unsigned cc, size_t nr,
                                              const ir_mode *mode)
 {
-	if(! (cc & cc_reg_param))
+	if (! (cc & cc_reg_param))
 		return NULL;
 
-	if(mode_is_float(mode)) {
-		if(!ia32_cg_config.use_sse2)
+	if (mode_is_float(mode)) {
+		if (!ia32_cg_config.use_sse2 || (cc & cc_fpreg_param) == 0)
 			return NULL;
-		if(nr >= MAXNUM_SSE_ARGS)
+		if (nr >= MAXNUM_SSE_ARGS)
 			return NULL;
 
-		if(cc & cc_this_call) {
+		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)) {
-		if(get_mode_size_bits(mode) > 32)
+	} 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)
+		if (nr >= MAXNUM_GPREG_ARGS)
 			return NULL;
 
-		if(cc & cc_this_call) {
+		if (cc & cc_this_call) {
 			return gpreg_param_reg_this[nr];
 		}
-		return gpreg_param_reg_std[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");