gen.c (98817a84ff1c755c347ac633ff017a623a631fad) gen.c (0b20933d8cfe2bf6473e9b581b5d1ed9a2117ecc)
1// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2/* Copyright (C) 2019 Facebook */
3
4#ifndef _GNU_SOURCE
5#define _GNU_SOURCE
6#endif
7#include <ctype.h>
8#include <errno.h>

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83 else if (str_has_suffix(name, ".bss"))
84 return "bss";
85 else if (str_has_suffix(name, ".kconfig"))
86 return "kconfig";
87 else
88 return NULL;
89}
90
1// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2/* Copyright (C) 2019 Facebook */
3
4#ifndef _GNU_SOURCE
5#define _GNU_SOURCE
6#endif
7#include <ctype.h>
8#include <errno.h>

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83 else if (str_has_suffix(name, ".bss"))
84 return "bss";
85 else if (str_has_suffix(name, ".kconfig"))
86 return "kconfig";
87 else
88 return NULL;
89}
90
91static void codegen_btf_dump_printf(void *ct, const char *fmt, va_list args)
91static void codegen_btf_dump_printf(void *ctx, const char *fmt, va_list args)
92{
93 vprintf(fmt, args);
94}
95
96static int codegen_datasec_def(struct bpf_object *obj,
97 struct btf *btf,
98 struct btf_dump *d,
99 const struct btf_type *sec,
100 const char *obj_name)
101{
102 const char *sec_name = btf__name_by_offset(btf, sec->name_off);
103 const struct btf_var_secinfo *sec_var = btf_var_secinfos(sec);
104 int i, err, off = 0, pad_cnt = 0, vlen = btf_vlen(sec);
105 const char *sec_ident;
106 char var_ident[256];
92{
93 vprintf(fmt, args);
94}
95
96static int codegen_datasec_def(struct bpf_object *obj,
97 struct btf *btf,
98 struct btf_dump *d,
99 const struct btf_type *sec,
100 const char *obj_name)
101{
102 const char *sec_name = btf__name_by_offset(btf, sec->name_off);
103 const struct btf_var_secinfo *sec_var = btf_var_secinfos(sec);
104 int i, err, off = 0, pad_cnt = 0, vlen = btf_vlen(sec);
105 const char *sec_ident;
106 char var_ident[256];
107 bool strip_mods = false;
107
108
108 if (strcmp(sec_name, ".data") == 0)
109 if (strcmp(sec_name, ".data") == 0) {
109 sec_ident = "data";
110 sec_ident = "data";
110 else if (strcmp(sec_name, ".bss") == 0)
111 } else if (strcmp(sec_name, ".bss") == 0) {
111 sec_ident = "bss";
112 sec_ident = "bss";
112 else if (strcmp(sec_name, ".rodata") == 0)
113 } else if (strcmp(sec_name, ".rodata") == 0) {
113 sec_ident = "rodata";
114 sec_ident = "rodata";
114 else if (strcmp(sec_name, ".kconfig") == 0)
115 strip_mods = true;
116 } else if (strcmp(sec_name, ".kconfig") == 0) {
115 sec_ident = "kconfig";
117 sec_ident = "kconfig";
116 else
118 } else {
117 return 0;
119 return 0;
120 }
118
119 printf(" struct %s__%s {\n", obj_name, sec_ident);
120 for (i = 0; i < vlen; i++, sec_var++) {
121 const struct btf_type *var = btf__type_by_id(btf, sec_var->type);
122 const char *var_name = btf__name_by_offset(btf, var->name_off);
123 DECLARE_LIBBPF_OPTS(btf_dump_emit_type_decl_opts, opts,
124 .field_name = var_ident,
125 .indent_level = 2,
121
122 printf(" struct %s__%s {\n", obj_name, sec_ident);
123 for (i = 0; i < vlen; i++, sec_var++) {
124 const struct btf_type *var = btf__type_by_id(btf, sec_var->type);
125 const char *var_name = btf__name_by_offset(btf, var->name_off);
126 DECLARE_LIBBPF_OPTS(btf_dump_emit_type_decl_opts, opts,
127 .field_name = var_ident,
128 .indent_level = 2,
129 .strip_mods = strip_mods,
126 );
127 int need_off = sec_var->offset, align_off, align;
128 __u32 var_type_id = var->type;
130 );
131 int need_off = sec_var->offset, align_off, align;
132 __u32 var_type_id = var->type;
129 const struct btf_type *t;
130
133
131 t = btf__type_by_id(btf, var_type_id);
132 while (btf_is_mod(t)) {
133 var_type_id = t->type;
134 t = btf__type_by_id(btf, var_type_id);
135 }
136
137 if (off > need_off) {
138 p_err("Something is wrong for %s's variable #%d: need offset %d, already at %d.\n",
139 sec_name, i, need_off, off);
140 return -EINVAL;
141 }
142
143 align = btf__align_of(btf, var->type);
144 if (align <= 0) {

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135 p_err("Something is wrong for %s's variable #%d: need offset %d, already at %d.\n",
136 sec_name, i, need_off, off);
137 return -EINVAL;
138 }
139
140 align = btf__align_of(btf, var->type);
141 if (align <= 0) {

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