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1 /* | 1 /* |
2 * ORG bytecode | 2 * ORG bytecode |
3 * | 3 * |
4 * Copyright (C) 2005-2007 Peter Johnson | 4 * Copyright (C) 2005-2007 Peter Johnson |
5 * | 5 * |
6 * Redistribution and use in source and binary forms, with or without | 6 * Redistribution and use in source and binary forms, with or without |
7 * modification, are permitted provided that the following conditions | 7 * modification, are permitted provided that the following conditions |
8 * are met: | 8 * are met: |
9 * 1. Redistributions of source code must retain the above copyright | 9 * 1. Redistributions of source code must retain the above copyright |
10 * notice, this list of conditions and the following disclaimer. | 10 * notice, this list of conditions and the following disclaimer. |
11 * 2. Redistributions in binary form must reproduce the above copyright | 11 * 2. Redistributions in binary form must reproduce the above copyright |
12 * notice, this list of conditions and the following disclaimer in the | 12 * notice, this list of conditions and the following disclaimer in the |
13 * documentation and/or other materials provided with the distribution. | 13 * documentation and/or other materials provided with the distribution. |
14 * | 14 * |
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND OTHER CONTRIBUTORS ``AS IS'' | 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND OTHER CONTRIBUTORS ``AS IS'' |
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR OTHER CONTRIBUTORS BE | 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR OTHER CONTRIBUTORS BE |
19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | 19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
25 * POSSIBILITY OF SUCH DAMAGE. | 25 * POSSIBILITY OF SUCH DAMAGE. |
26 */ | 26 */ |
27 #include "util.h" | 27 #include "util.h" |
28 /*@unused@*/ RCSID("$Id: bc-org.c 2130 2008-10-07 05:38:11Z peter $"); | |
29 | 28 |
30 #include "libyasm-stdint.h" | 29 #include "libyasm-stdint.h" |
31 #include "coretype.h" | 30 #include "coretype.h" |
32 #include "file.h" | 31 #include "file.h" |
33 | 32 |
34 #include "errwarn.h" | 33 #include "errwarn.h" |
35 #include "intnum.h" | 34 #include "intnum.h" |
36 #include "expr.h" | 35 #include "expr.h" |
37 #include "value.h" | 36 #include "value.h" |
38 | 37 |
39 #include "bytecode.h" | 38 #include "bytecode.h" |
40 | 39 |
41 | 40 |
42 typedef struct bytecode_org { | 41 typedef struct bytecode_org { |
43 unsigned long start; /* target starting offset within section */ | 42 unsigned long start; /* target starting offset within section */ |
44 unsigned long fill; /* fill value */ | 43 unsigned long fill; /* fill value */ |
45 } bytecode_org; | 44 } bytecode_org; |
46 | 45 |
47 static void bc_org_destroy(void *contents); | 46 static void bc_org_destroy(void *contents); |
48 static void bc_org_print(const void *contents, FILE *f, int indent_level); | 47 static void bc_org_print(const void *contents, FILE *f, int indent_level); |
49 static void bc_org_finalize(yasm_bytecode *bc, yasm_bytecode *prev_bc); | 48 static void bc_org_finalize(yasm_bytecode *bc, yasm_bytecode *prev_bc); |
50 static int bc_org_calc_len(yasm_bytecode *bc, yasm_bc_add_span_func add_span, | 49 static int bc_org_calc_len(yasm_bytecode *bc, yasm_bc_add_span_func add_span, |
51 void *add_span_data); | 50 void *add_span_data); |
52 static int bc_org_expand(yasm_bytecode *bc, int span, long old_val, | 51 static int bc_org_expand(yasm_bytecode *bc, int span, long old_val, |
53 long new_val, /*@out@*/ long *neg_thres, | 52 long new_val, /*@out@*/ long *neg_thres, |
54 /*@out@*/ long *pos_thres); | 53 /*@out@*/ long *pos_thres); |
55 static int bc_org_tobytes(yasm_bytecode *bc, unsigned char **bufp, void *d, | 54 static int bc_org_tobytes(yasm_bytecode *bc, unsigned char **bufp, |
| 55 unsigned char *bufstart, void *d, |
56 yasm_output_value_func output_value, | 56 yasm_output_value_func output_value, |
57 /*@null@*/ yasm_output_reloc_func output_reloc); | 57 /*@null@*/ yasm_output_reloc_func output_reloc); |
58 | 58 |
59 static const yasm_bytecode_callback bc_org_callback = { | 59 static const yasm_bytecode_callback bc_org_callback = { |
60 bc_org_destroy, | 60 bc_org_destroy, |
61 bc_org_print, | 61 bc_org_print, |
62 bc_org_finalize, | 62 bc_org_finalize, |
63 NULL, | 63 NULL, |
64 bc_org_calc_len, | 64 bc_org_calc_len, |
65 bc_org_expand, | 65 bc_org_expand, |
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113 N_("ORG overlap with already existing data")); | 113 N_("ORG overlap with already existing data")); |
114 return -1; | 114 return -1; |
115 } | 115 } |
116 | 116 |
117 /* Generate space to start offset */ | 117 /* Generate space to start offset */ |
118 bc->len = org->start - new_val; | 118 bc->len = org->start - new_val; |
119 return 1; | 119 return 1; |
120 } | 120 } |
121 | 121 |
122 static int | 122 static int |
123 bc_org_tobytes(yasm_bytecode *bc, unsigned char **bufp, void *d, | 123 bc_org_tobytes(yasm_bytecode *bc, unsigned char **bufp, |
| 124 unsigned char *bufstart, void *d, |
124 yasm_output_value_func output_value, | 125 yasm_output_value_func output_value, |
125 /*@unused@*/ yasm_output_reloc_func output_reloc) | 126 /*@unused@*/ yasm_output_reloc_func output_reloc) |
126 { | 127 { |
127 bytecode_org *org = (bytecode_org *)bc->contents; | 128 bytecode_org *org = (bytecode_org *)bc->contents; |
128 unsigned long len, i; | 129 unsigned long len, i; |
129 | 130 |
130 /* Sanity check for overrun */ | 131 /* Sanity check for overrun */ |
131 if (bc->offset > org->start) { | 132 if (bc->offset > org->start) { |
132 yasm_error_set(YASM_ERROR_GENERAL, | 133 yasm_error_set(YASM_ERROR_GENERAL, |
133 N_("ORG overlap with already existing data")); | 134 N_("ORG overlap with already existing data")); |
134 return 1; | 135 return 1; |
135 } | 136 } |
136 len = org->start - bc->offset; | 137 len = org->start - bc->offset; |
137 for (i=0; i<len; i++) | 138 for (i=0; i<len; i++) |
138 YASM_WRITE_8(*bufp, org->fill); /* XXX: handle more than 8 bit? */ | 139 YASM_WRITE_8(*bufp, org->fill); /* XXX: handle more than 8 bit? */ |
139 return 0; | 140 return 0; |
140 } | 141 } |
141 | 142 |
142 yasm_bytecode * | 143 yasm_bytecode * |
143 yasm_bc_create_org(unsigned long start, unsigned long fill, unsigned long line) | 144 yasm_bc_create_org(unsigned long start, unsigned long fill, unsigned long line) |
144 { | 145 { |
145 bytecode_org *org = yasm_xmalloc(sizeof(bytecode_org)); | 146 bytecode_org *org = yasm_xmalloc(sizeof(bytecode_org)); |
146 | 147 |
147 org->start = start; | 148 org->start = start; |
148 org->fill = fill; | 149 org->fill = fill; |
149 | 150 |
150 return yasm_bc_create_common(&bc_org_callback, org, line); | 151 return yasm_bc_create_common(&bc_org_callback, org, line); |
151 } | 152 } |
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