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-rw-r--r--src/format/elf/format_elf.c101
-rw-r--r--src/format/elf/format_elf.h6
2 files changed, 107 insertions, 0 deletions
diff --git a/src/format/elf/format_elf.c b/src/format/elf/format_elf.c
index f043d0a..b70eef5 100644
--- a/src/format/elf/format_elf.c
+++ b/src/format/elf/format_elf.c
@@ -22,3 +22,104 @@
#include "elf.h"
+
+
+
+
+
+
+
+
+
+
+#include <ctype.h>
+#include <elf.h>
+#include <malloc.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+
+char *read_section_names(const uint8_t *content, Elf32_Off offset)
+{
+ char *result;
+ Elf32_Shdr section;
+
+ result = NULL;
+
+ memcpy(&section, &content[offset], sizeof(Elf32_Shdr));
+
+ result = (char *)calloc(section.sh_size + 1, sizeof(char));
+
+ memcpy(result, &content[section.sh_offset], section.sh_size);
+
+ return result;
+
+}
+
+
+bool find_target_section(const uint8_t *content, const char *target, const char *names, Elf32_Off offset, Elf32_Shdr *data)
+{
+ bool result;
+ Elf32_Shdr section;
+
+ result = false;
+
+ memcpy(&section, &content[offset], sizeof(Elf32_Shdr));
+
+ result = (strcmp(target, &names[section.sh_name]) == 0);
+
+ if (result)
+ {
+ printf("section: %s (0x%08x)\n", &names[section.sh_name], section.sh_addr);
+ *data = section;
+ }
+
+ return result;
+
+}
+
+
+
+bool find_text_data(const uint8_t *content, off_t *offset, off_t *size)
+{
+ bool result;
+ Elf32_Ehdr header;
+ char *names;
+ Elf32_Half i;
+ Elf32_Shdr data;
+
+ result = false;
+
+ memcpy(&header, content, sizeof(Elf32_Ehdr));
+
+ names = read_section_names(content, header.e_shoff + header.e_shentsize * header.e_shstrndx);
+ if (names == NULL)
+ {
+ fprintf(stderr, "no section header string table\n");
+ return NULL;
+ }
+
+ for (i = 0; i < header.e_shnum; i++)
+ {
+ if (i == header.e_shstrndx) continue;
+
+ if (find_target_section(content, ".text", names, header.e_shoff + header.e_shentsize * i, &data))
+ {
+ printf("Find it !\n");
+
+ *offset = data.sh_offset;
+ *size = data.sh_size;
+
+ result = true;
+
+ }
+
+ }
+
+ free(names);
+
+ return result;
+
+}
diff --git a/src/format/elf/format_elf.h b/src/format/elf/format_elf.h
index 894623a..feca71d 100644
--- a/src/format/elf/format_elf.h
+++ b/src/format/elf/format_elf.h
@@ -26,9 +26,15 @@
+#include <stdbool.h>
+#include <stdint.h>
+#include <sys/types.h>
+bool find_text_data(const uint8_t *content, off_t *, off_t *);
+
+
#endif /* _FORMAT_ELF_H */