X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/ad0e7aecfb25fcdb9296e5bf34ed96b31b515927..bf3214f060ff7f2548d7f0fa2569f03fe3e58441:/src/gras/DataDesc/ddt_convert.c

diff --git a/src/gras/DataDesc/ddt_convert.c b/src/gras/DataDesc/ddt_convert.c
index 10c0d869d4..e310edfec4 100644
--- a/src/gras/DataDesc/ddt_convert.c
+++ b/src/gras/DataDesc/ddt_convert.c
@@ -2,37 +2,90 @@
 
 /* ddt_remote - Stuff needed to get datadescs about remote hosts            */
 
-/* Authors: Olivier Aumage, Martin Quinson                                  */
-/* Copyright (C) 2003, 2004 the GRAS posse.                                 */
+/* Copyright (c) 2003 Olivier Aumage.                                       */
+/* Copyright (c) 2003, 2004 Martin Quinson.                                 */
+/* All rights reserved.                                                     */
 
 /* This program is free software; you can redistribute it and/or modify it
-   under the terms of the license (GNU LGPL) which comes with this package. */
+ * under the terms of the license (GNU LGPL) which comes with this package. */
 
 /************************************************************************/
 /* C combines the power of assembler with the portability of assembler. */
 /************************************************************************/
 
-#include "DataDesc/datadesc_private.h"
+#include "gras/DataDesc/datadesc_private.h"
 
-GRAS_LOG_NEW_DEFAULT_SUBCATEGORY(convert,DataDesc);
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(gras_ddt_convert,gras_ddt,
+		"Inter-architecture convertions");
 
 /***
- *** Table of all known architectures. 
+ *** Table of all known architectures:
+ ***
+  l_C:1/1:_I:2/2:4/4:4/4:8/8:_P:4/4:4/4:_D:4/4:8/8:) gras_arch=0; gras_arch_name=little32;;
+  l_C:1/1:_I:2/2:4/4:4/4:8/4:_P:4/4:4/4:_D:4/4:8/4:) gras_arch=1; gras_arch_name=little32_4;;
+
+  l_C:1/1:_I:2/2:4/4:8/8:8/8:_P:8/8:8/8:_D:4/4:8/8:) gras_arch=2; gras_arch_name=little64;;
+
+  B_C:1/1:_I:2/2:4/4:4/4:8/8:_P:4/4:4/4:_D:4/4:8/8:) gras_arch=3; gras_arch_name=big32;;
+  B_C:1/1:_I:2/2:4/4:4/4:8/8:_P:4/4:4/4:_D:4/4:8/4:) gras_arch=4; gras_arch_name=big32_8_4;;
+  B_C:1/1:_I:2/2:4/4:4/4:8/4:_P:4/4:4/4:_D:4/4:8/4:) gras_arch=5; gras_arch_name=big32_4;;
+  B_C:1/1:_I:2/2:4/2:4/2:8/2:_P:4/2:4/2:_D:4/2:8/2:) gras_arch=6; gras_arch_name=big32_2;;
+
+  B_C:1/1:_I:2/2:4/4:8/8:8/8:_P:8/8:8/8:_D:4/4:8/8:) gras_arch=7; gras_arch_name=big64;;
+
  ***/
 
 const gras_arch_desc_t gras_arches[gras_arch_count] = {
-  {"i386",   0,   {1,2,4,4,8,   4,4,   4,8}},
-  {"alpha",  0,   {1,2,4,8,8,   8,8,   4.8}},
-  {"powerpc",1,   {1,2,4,4,8,   4,4,   4,8}},
-  {"sparc",  1,   {1,2,4,8,8,   8,8,   4,8}}
+
+		{"little32_1", 	0, {1,2,4,4,8,   4,4,   4,8}, 	/* little endian, 1 byte alignement (win32) */
+				{1,1,1,1,1,   1,1,   1,1}},
+
+				{"little32_2", 	0, {1,2,4,4,8,   4,4,   4,8}, 	/* little endian, 2 bytes alignements (win32) */
+						{1,2,2,2,2,   2,2,   2,2}},
+
+						{"little32_4",    0, {1,2,4,4,8,   4,4,   4,8},   /* little endian, 4 bytes alignements (win32 and linux x86) */
+								{1,2,4,4,4,   4,4,   4,4}},
+
+								{"little32_8",    0, {1,2,4,4,8,   4,4,   4,8}, 	/* little endian, 8 bytes alignement (win32) */
+										{1,2,4,4,8,   4,4,   4,8}},
+
+										{"little64",      0, {1,2,4,8,8,   8,8,   4,8}, /* alpha, ia64 */
+												{1,2,4,8,8,   8,8,   4,8}},
+
+												{"big32_8",       1, {1,2,4,4,8,   4,4,   4,8},
+														{1,2,4,4,8,   4,4,   4,8}},
+
+														{"big32_8_4",     1, {1,2,4,4,8,   4,4,   4,8}, /* AIX */
+																{1,2,4,4,8,   4,4,   4,4}},
+
+																{"big32_4",       1, {1,2,4,4,8,   4,4,   4,8}, /* G5 */
+																		{1,2,4,4,4,   4,4,   4,4}},
+
+																		{"big32_2",       1, {1,2,4,4,8,   4,4,   4,8}, /* ARM */
+																				{1,2,2,2,2,   2,2,   2,2}},
+
+																				{"big64",         1, {1,2,4,8,8,   8,8,   4,8}, /* sparc */
+																						{1,2,4,8,8,   8,8,   4,8}},
+
+																						{"big64_8_4",     1, {1,2,4,8,8,   8,8,   4,8}, /* aix with -maix64 */
+																								{1,2,4,8,8,   8,8,   4,4}}
 };
 
 const char *gras_datadesc_arch_name(int code) {
-   if (code < 0 || code >= gras_arch_count)
-     return "[unknown arch]";
-   return gras_arches[code].name;
+	if (code < 0 || code >= gras_arch_count)
+		return "[unknown arch]";
+	return gras_arches[code].name;
 }
 
+
+/**
+ * Local function doing the grunt work
+ */
+static void
+gras_dd_reverse_bytes(void *to,
+		const void *from,
+		size_t length);
+
 /**
  * gras_dd_convert_elm:
  *
@@ -40,26 +93,171 @@ const char *gras_datadesc_arch_name(int code) {
  * The data to be converted is stored in @src, and is to be stored in @dst.
  * Both pointers may be the same location if no resizing is needed.
  */
-gras_error_t
-gras_dd_convert_elm(gras_datadesc_type_t *type, int count,
-		    int r_arch, 
-		    void *src, void *dst) {
-  //  gras_dd_cat_scalar_t scal_data = type->category.scal_data;
+void
+gras_dd_convert_elm(gras_datadesc_type_t type, int count,
+		int r_arch,
+		void *src, void *dst) {
+	gras_dd_cat_scalar_t scal = type->category.scalar_data;
+	int cpt;
+	const void *r_data;
+	void *l_data;
+	unsigned long r_size, l_size;
+	/* Hexadecimal displayer
+  union {
+    char c[sizeof(int)];
+    int i;
+  } tester;
+	 */
+
+	xbt_assert(type->category_code == e_gras_datadesc_type_cat_scalar);
+	xbt_assert(r_arch != GRAS_THISARCH);
 
-  gras_assert(type->category_code == e_gras_datadesc_type_cat_scalar);
+	r_size = type->size[r_arch];
+	l_size = type->size[GRAS_THISARCH];
+	DEBUG4("r_size=%lu l_size=%lu,    src=%p dst=%p",
+			r_size,l_size,src,dst);
 
-  if (r_arch == GRAS_THISARCH)
-    return no_error;
+	DEBUG2("remote=%c local=%c", gras_arches[r_arch].endian?'B':'l',
+			gras_arches[GRAS_THISARCH].endian?'B':'l');
 
-  if (gras_arches[r_arch].endian == gras_arches[GRAS_THISARCH].endian &&
-      type->aligned_size[r_arch] == type->aligned_size[GRAS_THISARCH])
-    return no_error;
+	if(r_size != l_size) {
+		for(cpt = 0, r_data = src, l_data = dst;
+		cpt < count;
+		cpt++,
+		r_data = (char *)r_data + r_size,
+		l_data = (char *)l_data + l_size) {
 
-  
+			/*
+      fprintf(stderr,"r_data=");
+      for (cpt=0; cpt<r_size; cpt++) {
+	tester.i=0;
+	tester.c[0]= ((char*)r_data)[cpt];
+	fprintf(stderr,"\\%02x", tester.i);
+      }
+      fprintf(stderr,"\n");
+			 */
 
-  RAISE_UNIMPLEMENTED;
+			/* Resize that damn integer, pal */
+
+			unsigned char *l_sign, *r_sign;
+			int padding;
+			int sizeChange = l_size - r_size;
+			int lowOrderFirst = !gras_arches[r_arch].endian ||
+			gras_arches[r_arch].endian == gras_arches[GRAS_THISARCH].endian;
+
+			DEBUG5("Resize integer %d from %lu @%p to %lu @%p",
+					cpt, r_size,r_data, l_size,l_data);
+			xbt_assert0(r_data != l_data, "Impossible to resize in place");
+
+			if(sizeChange < 0) {
+				DEBUG3("Truncate %d bytes (%s,%s)", -sizeChange,
+						lowOrderFirst?"lowOrderFirst":"bigOrderFirst",
+								scal.encoding == e_gras_dd_scalar_encoding_sint?"signed":"unsigned");
+				/* Truncate high-order bytes. */
+				memcpy(l_data,
+						gras_arches[r_arch].endian ? ((char*)r_data-sizeChange)
+								:         r_data,
+								l_size);
+
+				if(scal.encoding == e_gras_dd_scalar_encoding_sint) {
+					DEBUG0("This is signed");
+					/* Make sure the high order bit of r_data and l_data are the same */
+					l_sign = gras_arches[GRAS_THISARCH].endian
+					? ((unsigned char*)l_data + l_size - 1)
+							:  (unsigned char*)l_data;
+					r_sign = gras_arches[r_arch].endian
+					? ((unsigned char*)r_data + r_size - 1)
+							:  (unsigned char*)r_data;
+					DEBUG2("This is signed (r_sign=%c l_sign=%c", *r_sign,*l_sign);
+
+					if ((*r_sign > 127) != (*l_sign > 127)) {
+						if(*r_sign > 127)
+							*l_sign += 128;
+						else
+							*l_sign -= 128;
+					}
+				}
+			} else {
+				DEBUG1("Extend %d bytes", sizeChange);
+				if (scal.encoding != e_gras_dd_scalar_encoding_sint) {
+					DEBUG0("This is signed");
+					padding = 0; /* pad unsigned with 0 */
+				} else {
+					/* extend sign */
+					r_sign = gras_arches[r_arch].endian ? ((unsigned char*)r_data + r_size - 1)
+							:  (unsigned char*)r_data;
+					padding = (*r_sign > 127) ? 0xff : 0;
+				}
+
+				memset(l_data, padding, l_size);
+				memcpy(!gras_arches[r_arch].endian ? l_data : ((char *)l_data + sizeChange),
+						r_data, r_size);
+
+				/*
+	fprintf(stderr,"r_data=");
+	for (cpt=0; cpt<r_size; cpt++) {
+	  tester.i=0;
+	  tester.c[0] = ((char*)r_data)[cpt];
+	  fprintf(stderr,"\\%02x", tester.i);
+	}
+	fprintf(stderr,"\n");
+
+	fprintf(stderr,"l_data=");
+	for (cpt=0; cpt<l_size; cpt++) {
+	  tester.i=0;
+	  tester.c[0]= ((char*)l_data)[cpt];
+	  fprintf(stderr,"\\%02x", tester.i);
+	} fprintf(stderr,"\n");
+				 */
+			}
+		}
+	}
+
+	/* flip bytes if needed */
+	if(gras_arches[r_arch].endian != gras_arches[GRAS_THISARCH].endian &&
+			(l_size * count)  > 1) {
+
+		for(cpt = 0, r_data=dst, l_data=dst;
+		cpt < count;
+		cpt++,
+		r_data = (char *)r_data + l_size, /* resizing already done */
+		l_data = (char *)l_data + l_size) {
+
+			DEBUG1("Flip elm %d",cpt);
+			gras_dd_reverse_bytes(l_data, r_data, l_size);
+		}
+	}
+
+}
+
+static void
+gras_dd_reverse_bytes(void *to,
+		const void *from,
+		size_t length) {
+
+	char charBegin;
+	const char *fromBegin;
+	const char *fromEnd;
+	char *toBegin;
+	char *toEnd;
+
+	for(fromBegin = (const char *)from,
+			fromEnd = fromBegin + length - 1,
+			toBegin = (char *)to,
+			toEnd = toBegin + length - 1;
+
+	fromBegin <= fromEnd;
+
+	fromBegin++, fromEnd--,
+	toBegin++, toEnd--) {
+
+		charBegin = *fromBegin;
+		*toBegin = *fromEnd;
+		*toEnd = charBegin;
+	}
 }
 
+
 /**
  * gras_arch_selfid:
  *
@@ -67,5 +265,5 @@ gras_dd_convert_elm(gras_datadesc_type_t *type, int count,
  */
 int
 gras_arch_selfid(void) {
-  return GRAS_THISARCH;
+	return GRAS_THISARCH;
 }