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authoreutarass2008-08-29 00:06:20 +0000
committereutarass2008-08-29 00:06:20 +0000
commita58df79f11b5d768f6f7bbdea1e9f8e9d3e550f3 (patch)
treed467c1a3726dc7de311db3856538f0b5d2962706 /elf.h
parent8ea5fe28ae91619ce3ed884210a199af96c6a489 (diff)
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TCF agent: Implemented reading, caching and usage of ELF/DWARF debug information.
Diffstat (limited to 'elf.h')
-rw-r--r--elf.h102
1 files changed, 91 insertions, 11 deletions
diff --git a/elf.h b/elf.h
index cdb8f74f..9aeb45eb 100644
--- a/elf.h
+++ b/elf.h
@@ -19,10 +19,82 @@
#define D_elf
#include "mdep.h"
+#include "context.h"
+
#if !defined(WIN32)
# include <elf.h>
#endif
-#include "context.h"
+
+#if defined(WIN32)
+
+#define SHT_NULL 0
+#define SHT_PROGBITS 1
+#define SHT_SYMTAB 2
+#define SHT_STRTAB 3
+
+#define STB_LOCAL 0
+#define STB_GLOBAL 1
+#define STB_WEAK 2
+
+#define STT_NOTYPE 0
+#define STT_OBJECT 1
+#define STT_FUNC 2
+#define STT_SECTION 3
+#define STT_FILE 4
+
+typedef unsigned long Elf32_Addr;
+typedef unsigned short Elf32_Half;
+typedef unsigned long Elf32_Off;
+typedef signed long Elf32_Sword;
+typedef unsigned long Elf32_Word;
+
+typedef struct Elf32_Sym {
+ Elf32_Word st_name;
+ Elf32_Addr st_value;
+ Elf32_Word st_size;
+ unsigned char st_info;
+ unsigned char st_other;
+ Elf32_Half st_shndx;
+} Elf32_Sym;
+
+#define ELF32_ST_BIND(i) ((i)>>4)
+#define ELF32_ST_TYPE(i) ((i)&0xf)
+
+#endif
+
+#if defined(_WRS_KERNEL) || defined(WIN32)
+
+typedef uns64 Elf64_Addr;
+typedef unsigned short Elf64_Half;
+typedef unsigned long Elf64_Word;
+typedef signed long Elf64_Sword;
+typedef uns64 Elf64_Xword;
+typedef int64 Elf64_Sxword;
+typedef uns64 Elf64_Off;
+typedef unsigned short Elf64_Section;
+typedef Elf64_Half Elf64_Versym;
+typedef unsigned short Elf64_Quarter;
+
+typedef struct {
+ Elf64_Word st_name;
+ unsigned char st_info;
+ unsigned char st_other;
+ Elf64_Section st_shndx;
+ Elf64_Addr st_value;
+ Elf64_Xword st_size;
+} Elf64_Sym;
+
+#define ELF64_ST_BIND(info) ((info) >> 4)
+#define ELF64_ST_TYPE(info) ((info) & 0xf)
+
+#endif
+
+typedef struct Elf_Sym {
+ union {
+ Elf32_Sym Elf32;
+ Elf64_Sym Elf64;
+ } u;
+} Elf_Sym;
typedef unsigned char U1_T;
typedef signed char I1_T;
@@ -49,13 +121,13 @@ struct ELF_File {
int fd;
int big_endian;
+ int elf64;
U4_T section_cnt;
ELF_Section ** sections;
void * libelf_cache;
- void * dwarf_cache;
- void * sym_cache;
- void * line_numbers_cache;
+ void * dwarf_io_cache;
+ void * dwarf_dt_cache;
int listed;
};
@@ -74,6 +146,21 @@ struct ELF_Section {
};
/*
+ * Open ELF file for reading.
+ * Same file can be opened mutiple times, each call to elf_open() increases reference counter.
+ * File must be closed after usage by calling elf_close().
+ * Returns the file descriptior on success. If error, returns NULL and sets errno.
+ */
+extern ELF_File * elf_open(char * file_name);
+
+/*
+ * Close ELF file.
+ * Each call of elf_close() decrements reference counter.
+ * The file will be kept in a cache for some time even after all references are closed.
+ */
+extern void elf_close(ELF_File * file);
+
+/*
* Iterate context ELF files that are mapped in context memory in given address range (inclusive).
* Returns the file descriptior on success. If error, returns NULL and sets errno.
*/
@@ -87,13 +174,6 @@ extern ELF_File * elf_list_next(Context * ctx);
extern void elf_list_done(Context * ctx);
/*
- * Read section data from ELF file.
- * '*rd_len' is set to number of bytes transfered into the buffer.
- * Returns zero on success. If error, returns -1 and sets errno.
- */
-extern int elf_read(ELF_Section * section, U8_T offset, U1_T * buf, U4_T size, U4_T * rd_len);
-
-/*
* Load section data into memory.
* '*address' is set to section data address in memory.
* Data will stay in memory at least until file is closed.

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