Flesh out include/elf.h

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5251 42af7a65-404d-4744-a932-0658087f49c3

binfmt/libelf/arm.h

+/****************************************************************************
+ * binfmt/libelf/arm.h
+ *
+ *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __BINFMT_LIBELF_ARM_H
+#define __BINFMT_LIBELF_ARM_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+#endif /* __BINFMT_LIBELF_ARM_H */

binfmt/libelf/libelf.h

+/****************************************************************************
+ * binfmt/libelf/libelf.h
+ *
+ *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __BINFMT_LIBELF_LIBELF_H
+#define __BINFMT_LIBELF_LIBELF_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+#endif /* __BINFMT_LIBELF_LIBELF_H */

include/elf.h

@@ -4,6 +4,9 @@
  *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
+ * Reference: System V Application Binary Interface, Edition 4.1, March 18,
+ * 1997, The Santa Cruz Operation, Inc.
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
@@ -42,12 +45,286 @@
 
 #include <nuttx/config.h>
 
+#include <stdint.h>
+
 /****************************************************************************
  * Pre-processor Definitions
  ****************************************************************************/
 
 /****************************************************************************
- * Public Types
+ * Pre-processor Definitions
  ****************************************************************************/
 
+/* Values for Elf32_Ehdr::e_type */
+
+#define ET_NONE           0       /* No file type */
+#define ET_REL            1       /* Relocatable file */
+#define ET_EXEC           2       /* Executable file */
+#define ET_DYN            3       /* Shared object file */
+#define ET_CORE           4       /* Core file */
+#define ET_LOPROC         0xff00  /* Processor-specific */
+#define ET_HIPROC         0xffff  /* Processor-specific */
+
+/* Values for Elf32_Ehdr::e_machine */
+
+#define EM_NONE            0      /* No machine */
+#define EM_M32             1      /* AT&T WE 32100 */
+#define EM_SPARC           2      /* SPARC */
+#define EM_386             3      /* Intel 80386 */
+#define EM_68K             4      /* Motorola 68000 */
+#define EM_88K             5      /* Motorola 88000 */
+#define EM_860             7      /* Intel 80860 */
+#define EM_MIPS            8      /* MIPS RS3000 Big-Endian */
+#define EM_MIPS_RS4_BE     10     /* MIPS RS4000 Big-Endian */
+                                  /* 11-16 Reserved for future use */
+
+/* Values for Elf32_Ehdr::e_version */
+
+#define EV_NONE            0      /* Invalid version */
+#define EV_CURRENT         1      /* The current version */
+
+/* Ehe ELF identifier */
+
+#define EI_MAG0            0      /* File identification */
+#define EI_MAG1            1      /* File identification */
+#define EI_MAG2            2      /* File identification */
+#define EI_MAG3            3      /* File identification */
+#define EI_CLASS           4      /* File class */
+#define EI_DATA            5      /* Data encoding */
+#define EI_VERSION         6      /* File version */
+#define EI_PAD             7      /* Start of padding bytes */
+#define EI_NIDENT          16     /* Size of eident[] */
+
+#define EI_MAGIC           { 0x7f, 'E', 'L', 'F' }
+
+/* Values for EI_CLASS */
+
+#define ELFCLASSNONE       0      /* Invalid class */
+#define ELFCLASS32         1      /* 32-bit objects */
+#define ELFCLASS64         2      /* 64-bit objects */
+
+/* Values for EI_DATA */
+
+#define ELFDATANONE        0     /* Invalid data encoding */
+#define ELFDATA2LSB        1     /* Least significant byte occupying the lowest address */
+#define ELFDATA2MSB        2     /* Most significant byte occupying the lowest address */
+
+/* Figure 4-7: Special Section Indexes */
+
+#define SHN_UNDEF          0
+#define SHN_LORESERVE      0xff00
+#define SHN_LOPROC         0xff00
+#define SHN_HIPROC         0xff1f
+#define SHN_ABS            0xfff1
+#define SHN_COMMON         0xfff2
+#define SHN_HIRESERVE      0xffff
+
+/* Figure 4-9: Section Types, sh_type */
+
+#define SHT_NULL           0
+#define SHT_PROGBITS       1
+#define SHT_SYMTAB         2
+#define SHT_STRTAB         3
+#define SHT_RELA           4
+#define SHT_HASH           5
+#define SHT_DYNAMIC        6
+#define SHT_NOTE           7
+#define SHT_NOBITS         8
+#define SHT_REL            9
+#define SHT_SHLIB          10
+#define SHT_DYNSYM         11
+#define SHT_LOPROC         0x70000000
+#define SHT_HIPROC         0x7fffffff
+#define SHT_LOUSER         0x80000000
+#define SHT_HIUSER         0xffffffff
+
+/* Figure 4-11: Section Attribute Flags, sh_flags */
+
+#define SHF_WRITE          1
+#define SHF_ALLOC          2
+#define SHF_EXECINSTR      4
+#define SHF_MASKPROC       0xf0000000
+
+/* Definitions for Elf32_Sym::st_info */
+
+#define ELF32_ST_BIND(i)   ((i)>>4)
+#define ELF32_ST_TYPE(i)   ((i)&0xf)
+#define ELF32_ST_INFO(b,t) (((b)<<4)+((t)&0xf))
+
+/* Figure 4-16: Symbol Binding, ELF32_ST_BIND */
+
+#define STB_LOCAL          0
+#define STB_GLOBAL         1
+#define STB_WEAK           2
+#define STB_LOPROC         13
+#define STB_HIPROC         15
+
+/* Figure 4-17: Symbol Types, ELF32_ST_TYPE */
+
+#define STT_NOTYPE         0
+#define STT_OBJECT         1
+#define STT_FUNC           2
+#define STT_SECTION        3
+#define STT_FILE           4
+#define STT_LOPROC         13
+#define STT_HIPROC         15
+
+/* Definitions for Elf32_Rel*::r_info */
+
+#define ELF32_R_SYM(i)    ((i)>>8)
+#define ELF32_R_TYPE(i)   ((unsigned char)(i))
+#define ELF32_R_INFO(s,t) (((s)<<8)+(unsigned char)(t))
+
+/* Figure 5-2: Segment Types, p_type */
+
+#define PT_NULL            0
+#define PT_LOAD            1
+#define PT_DYNAMIC         2
+#define PT_INTERP          3
+#define PT_NOTE            4
+#define PT_SHLIB           5
+#define PT_PHDR            6
+#define PT_LOPROC          0x70000000
+#define PT_HIPROC          0x7fffffff
+
+/* Figure 5-3: Segment Flag Bits, p_flags */
+
+#define PF_X               1          /* Execute */
+#define PF_W               2          /* Write */
+#define PF_R               4          /* Read */
+#define PF_MASKPROC        0xf0000000 /* Unspecified */
+
+/* Figure 5-10: Dynamic Array Tags, d_tag */
+
+#define DT_NULL            0          /* d_un=ignored */
+#define DT_NEEDED          1          /* d_un=d_val */
+#define DT_PLTRELSZ        2          /* d_un=d_val */
+#define DT_PLTGOT          3          /* d_un=d_ptr */
+#define DT_HASH            4          /* d_un=d_ptr */
+#define DT_STRTAB          5          /* d_un=d_ptr */
+#define DT_SYMTAB          6          /* d_un=d_ptr */
+#define DT_RELA            7          /* d_un=d_ptr */
+#define DT_RELASZ          8          /* d_un=d_val */
+#define DT_RELAENT         9          /* d_un=d_val */
+#define DT_STRSZ           10         /* d_un=d_val */
+#define DT_SYMENT          11         /* d_un=d_val */
+#define DT_INIT            12         /* d_un=d_ptr */
+#define DT_FINI            13         /* d_un=d_ptr */
+#define DT_SONAME          14         /* d_un=d_val */
+#define DT_RPATH           15         /* d_un=d_val */
+#define DT_SYMBOLIC        16         /* d_un=ignored */
+#define DT_REL             17         /* d_un=d_ptr */
+#define DT_RELSZ           18         /* d_un=d_val */
+#define DT_RELENT          19         /* d_un=d_val */
+#define DT_PLTREL          20         /* d_un=d_val */
+#define DT_DEBUG           21         /* d_un=d_ptr */
+#define DT_TEXTREL         22         /* d_un=ignored */
+#define DT_JMPREL          23         /* d_un=d_ptr */
+#define DT_BINDNOW         24         /* d_un=ignored */
+#define DT_LOPROC          0x70000000 /* d_un=unspecified */
+#define DT_HIPROC          0x7fffffff /* d_un= unspecified */
+
+/****************************************************************************
+ * Public Type Definitions
+ ****************************************************************************/
+
+/* Figure 4.2: 32-Bit Data Types */
+
+typedef uint32_t  ELF32_Addr  /* Unsigned program address */
+typedef uint16_t  ELF32_Half  /* Unsigned medium integer */
+typedef uint32_t  ELF32_Off   /* Unsigned file offset */
+typedef int32_t   ELF32_Sword /* Signed large integer */
+typedef uint32_t  ELF32_Word  /* Unsigned large integer */
+
+/* Figure 4-3: ELF Header */
+
+typedef struct
+{
+  unsigned char e_ident[EI_NIDENT];
+  ELF32_Half    e_type;
+  ELF32_Half    e_machine;
+  ELF32_Word    e_version;
+  ELF32_Addr    e_entry;
+  ELF32_Off     e_phoff;
+  ELF32_Off     e_shoff;
+  ELF32_Word    e_flags;
+  ELF32_Half    e_ehsize;
+  ELF32_Half    e_phentsize;
+  ELF32_Half    e_phnum;
+  ELF32_Half    e_shentsize;
+  ELF32_Half    e_shnum;
+  ELF32_Half    e_shstrndx;
+} Elf32_Ehdr;
+
+/* Figure 4-8: Section Header */
+
+typedef struct
+{
+  ELF32_Word    sh_name;
+  ELF32_Word    sh_type;
+  ELF32_Word    sh_flags;
+  ELF32_Addr    sh_addr;
+  ELF32_Off     sh_offset;
+  ELF32_Word    sh_size;
+  ELF32_Word    sh_link;
+  ELF32_Word    sh_info;
+  ELF32_Word    sh_addralign;
+  ELF32_Word    sh_entsize;
+} Elf32_Shdr;
+
+/* Figure 4-15: Symbol Table Entry */
+
+typedef struct
+{
+  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;
+
+/* Figure 4-19: Relocation Entries */
+
+typedef struct
+{
+  ELF32_Addr   r_offset;
+  ELF32_Word   r_info;
+} Elf32_Rel;
+
+typedef struct
+{
+  ELF32_Addr   r_offset;
+  ELF32_Word   r_info;
+  ELF32_Sword  r_addend;
+} Elf32_Rela;
+
+/* Figure 5-1: Program Header */
+
+typedef struct
+{
+  Elf32_Word   p_type;
+  Elf32_Off    p_offset;
+  Elf32_Addr   p_vaddr;
+  Elf32_Addr   p_paddr;
+  Elf32_Word   p_filesz;
+  Elf32_Word   p_memsz;
+  Elf32_Word   p_flags;
+  Elf32_Word   p_align;
+} Elf32_Phdr;
+
+/* Figure 5-9: Dynamic Structure */
+
+typedef struct
+{
+  Elf32_Sword  d_tag;
+  union
+  {
+    Elf32_Word d_val;
+    Elf32_Addr d_ptr;
+  } d_un;
+} Elf32_Dyn;
+
+//extern Elf32_Dyn _DYNAMIC[] ;
+
 #endif /* __INCLUDE_ELF_H */