1 /* ddt_remote - Stuff needed to get datadescs about remote hosts */
3 /* Copyright (c) 2004, 2005, 2006, 2009, 2010. The SimGrid Team.
4 * All rights reserved. */
6 /* This program is free software; you can redistribute it and/or modify it
7 * under the terms of the license (GNU LGPL) which comes with this package. */
9 /************************************************************************/
10 /* C combines the power of assembler with the portability of assembler. */
11 /************************************************************************/
13 #include "datadesc_private.h"
15 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(xbt_ddt_convert, xbt_ddt,
16 "Inter-architecture convertions");
19 *** Table of all known architectures:
21 l_C:1/1:_I:2/1:4/1:4/1:8/1:_P:4/1:4/1:_D:4/1:8/1: #xbt_arch=0; xbt_size=32; xbt_arch_name=little32_1;
22 l_C:1/1:_I:2/2:4/2:4/2:8/2:_P:4/2:4/2:_D:4/2:8/2: #xbt_arch=1; xbt_size=32; xbt_arch_name=little32_2;
23 l_C:1/1:_I:2/2:4/4:4/4:8/4:_P:4/4:4/4:_D:4/4:8/4: #xbt_arch=2; xbt_size=32; xbt_arch_name=little32_4;
24 l_C:1/1:_I:2/2:4/4:4/4:8/8:_P:4/4:4/4:_D:4/4:8/8: #xbt_arch=3; xbt_size=32; xbt_arch_name=little32_8;
25 l_C:1/1:_I:2/2:4/4:8/8:8/8:_P:8/8:8/8:_D:4/4:8/8: #xbt_arch=4; xbt_size=64; xbt_arch_name=little64;
26 l_C:1/1:_I:2/2:4/4:4/4:8/8:_P:8/8:8/8:_D:4/4:8/8: #xbt_arch=5; xbt_size=64; xbt_arch_name=little64_2;
28 B_C:1/1:_I:2/2:4/4:4/4:8/8:_P:4/4:4/4:_D:4/4:8/8: #xbt_arch=6; xbt_size=32; xbt_arch_name=big32_8;
29 B_C:1/1:_I:2/2:4/4:4/4:8/8:_P:4/4:4/4:_D:4/4:8/4: #xbt_arch=7; xbt_size=32; xbt_arch_name=big32_8_4;
30 B_C:1/1:_I:2/2:4/4:4/4:8/4:_P:4/4:4/4:_D:4/4:8/4: #xbt_arch=8; xbt_size=32; xbt_arch_name=big32_4;
31 B_C:1/1:_I:2/2:4/2:4/2:8/2:_P:4/2:4/2:_D:4/2:8/2: #xbt_arch=9; xbt_size=32; xbt_arch_name=big32_2;
32 B_C:1/1:_I:2/2:4/4:8/8:8/8:_P:8/8:8/8:_D:4/4:8/8: #xbt_arch=10; xbt_size=64; xbt_arch_name=big64;
33 B_C:1/1:_I:2/2:4/4:8/8:8/8:_P:8/8:8/8:_D:4/4:8/4: #xbt_arch=11; xbt_size=64; xbt_arch_name=big64_8_4;
35 PLEASE DO NOT MESS WITH THESE HARDCODED VALUES
38 Grep GRAS_THISARCH in buildtools/Cmake/CompleteInFiles.cmake for details
42 const xbt_arch_desc_t xbt_arches[xbt_arch_count] = {
44 {"little32_1", 0, {1, 2, 4, 4, 8, 4, 4, 4, 8}, /* little endian, 1 byte alignement (win32) */
45 {1, 1, 1, 1, 1, 1, 1, 1, 1}},
47 {"little32_2", 0, {1, 2, 4, 4, 8, 4, 4, 4, 8}, /* little endian, 2 bytes alignements (win32) */
48 {1, 2, 2, 2, 2, 2, 2, 2, 2}},
50 {"little32_4", 0, {1, 2, 4, 4, 8, 4, 4, 4, 8}, /* little endian, 4 bytes alignements (win32 and linux x86) */
51 {1, 2, 4, 4, 4, 4, 4, 4, 4}},
53 {"little32_8", 0, {1, 2, 4, 4, 8, 4, 4, 4, 8}, /* little endian, 8 bytes alignement (win32) */
54 {1, 2, 4, 4, 8, 4, 4, 4, 8}},
56 {"little64", 0, {1, 2, 4, 8, 8, 8, 8, 4, 8}, /* alpha, ia64 */
57 {1, 2, 4, 8, 8, 8, 8, 4, 8}},
59 {"little64_2", 0, {1, 2, 4, 4, 8, 8, 8, 4, 8}, /* win64 */
60 {1, 2, 4, 4, 8, 8, 8, 4, 8}},
62 {"big32_8", 1, {1, 2, 4, 4, 8, 4, 4, 4, 8},
63 {1, 2, 4, 4, 8, 4, 4, 4, 8}},
65 {"big32_8_4", 1, {1, 2, 4, 4, 8, 4, 4, 4, 8}, /* AIX */
66 {1, 2, 4, 4, 8, 4, 4, 4, 4}},
68 {"big32_4", 1, {1, 2, 4, 4, 8, 4, 4, 4, 8}, /* G5 */
69 {1, 2, 4, 4, 4, 4, 4, 4, 4}},
71 {"big32_2", 1, {1, 2, 4, 4, 8, 4, 4, 4, 8}, /* ARM */
72 {1, 2, 2, 2, 2, 2, 2, 2, 2}},
74 {"big64", 1, {1, 2, 4, 8, 8, 8, 8, 4, 8}, /* sparc */
75 {1, 2, 4, 8, 8, 8, 8, 4, 8}},
77 {"big64_8_4", 1, {1, 2, 4, 8, 8, 8, 8, 4, 8}, /* aix with -maix64 */
78 {1, 2, 4, 8, 8, 8, 8, 4, 4}}
81 const char *xbt_datadesc_arch_name(int code)
83 if (code < 0 || code >= xbt_arch_count)
84 return "[unknown arch]";
85 return xbt_arches[code].name;
90 * Local function doing the grunt work
92 static void xbt_dd_reverse_bytes(void *to, const void *from,
98 * Convert the element described by @type comming from architecture @r_arch.
99 * The data to be converted is stored in @src, and is to be stored in @dst.
100 * Both pointers may be the same location if no resizing is needed.
103 xbt_dd_convert_elm(xbt_datadesc_type_t type, int count,
104 int r_arch, void *src, void *dst)
106 xbt_dd_cat_scalar_t scal = type->category.scalar_data;
110 unsigned long r_size, l_size;
111 /* Hexadecimal displayer
118 xbt_assert(type->category_code == e_xbt_datadesc_type_cat_scalar);
119 xbt_assert(r_arch != GRAS_THISARCH);
121 r_size = type->size[r_arch];
122 l_size = type->size[GRAS_THISARCH];
123 XBT_DEBUG("r_size=%lu l_size=%lu, src=%p dst=%p", r_size, l_size, src,
126 XBT_DEBUG("remote=%c local=%c", xbt_arches[r_arch].endian ? 'B' : 'l',
127 xbt_arches[GRAS_THISARCH].endian ? 'B' : 'l');
129 if (r_size != l_size) {
130 for (cpt = 0, r_data = src, l_data = dst;
133 r_data = (char *) r_data + r_size,
134 l_data = (char *) l_data + l_size) {
137 fprintf(stderr,"r_data=");
138 for (cpt=0; cpt<r_size; cpt++) {
140 tester.c[0]= ((char*)r_data)[cpt];
141 fprintf(stderr,"\\%02x", tester.i);
143 fprintf(stderr,"\n");
146 /* Resize that damn integer, pal */
148 unsigned char *l_sign, *r_sign;
150 int sizeChange = l_size - r_size;
151 int lowOrderFirst = !xbt_arches[r_arch].endian ||
152 xbt_arches[r_arch].endian == xbt_arches[GRAS_THISARCH].endian;
154 XBT_DEBUG("Resize integer %d from %lu @%p to %lu @%p",
155 cpt, r_size, r_data, l_size, l_data);
156 xbt_assert(r_data != l_data, "Impossible to resize in place");
158 if (sizeChange < 0) {
159 XBT_DEBUG("Truncate %d bytes (%s,%s)", -sizeChange,
160 lowOrderFirst ? "lowOrderFirst" : "bigOrderFirst",
162 e_xbt_dd_scalar_encoding_sint ? "signed" : "unsigned");
163 /* Truncate high-order bytes. */
165 xbt_arches[r_arch].endian ? ((char *) r_data - sizeChange)
168 if (scal.encoding == e_xbt_dd_scalar_encoding_sint) {
169 XBT_DEBUG("This is signed");
170 /* Make sure the high order bit of r_data and l_data are the same */
171 l_sign = xbt_arches[GRAS_THISARCH].endian
172 ? ((unsigned char *) l_data + l_size - 1)
173 : (unsigned char *) l_data;
174 r_sign = xbt_arches[r_arch].endian
175 ? ((unsigned char *) r_data + r_size - 1)
176 : (unsigned char *) r_data;
177 XBT_DEBUG("This is signed (r_sign=%c l_sign=%c", *r_sign, *l_sign);
179 if ((*r_sign > 127) != (*l_sign > 127)) {
187 XBT_DEBUG("Extend %d bytes", sizeChange);
188 if (scal.encoding != e_xbt_dd_scalar_encoding_sint) {
189 XBT_DEBUG("This is signed");
190 padding = 0; /* pad unsigned with 0 */
194 xbt_arches[r_arch].endian ? ((unsigned char *) r_data +
196 : (unsigned char *) r_data;
197 padding = (*r_sign > 127) ? 0xff : 0;
201 memset(l_data, padding, l_size);
203 memcpy(!xbt_arches[r_arch].endian ? l_data
204 : ((char *) l_data + sizeChange), r_data, r_size);
207 fprintf(stderr,"r_data=");
208 for (cpt=0; cpt<r_size; cpt++) {
210 tester.c[0] = ((char*)r_data)[cpt];
211 fprintf(stderr,"\\%02x", tester.i);
213 fprintf(stderr,"\n");
215 fprintf(stderr,"l_data=");
216 for (cpt=0; cpt<l_size; cpt++) {
218 tester.c[0]= ((char*)l_data)[cpt];
219 fprintf(stderr,"\\%02x", tester.i);
220 } fprintf(stderr,"\n");
226 /* flip bytes if needed */
227 if (xbt_arches[r_arch].endian != xbt_arches[GRAS_THISARCH].endian &&
228 (l_size * count) > 1) {
230 for (cpt = 0, r_data = dst, l_data = dst; cpt < count; cpt++, r_data = (char *) r_data + l_size, /* resizing already done */
231 l_data = (char *) l_data + l_size) {
233 XBT_DEBUG("Flip elm %d", cpt);
234 xbt_dd_reverse_bytes(l_data, r_data, l_size);
240 static void xbt_dd_reverse_bytes(void *to, const void *from,
245 const char *fromBegin;
250 for (fromBegin = (const char *) from,
251 fromEnd = fromBegin + length - 1,
252 toBegin = (char *) to,
253 toEnd = toBegin + length - 1;
254 fromBegin <= fromEnd; fromBegin++, fromEnd--, toBegin++, toEnd--) {
256 charBegin = *fromBegin;
266 * returns the ID of the architecture the process is running on
268 int xbt_arch_selfid(void)
270 return GRAS_THISARCH;