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A little more ELF loader logic

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git-svn-id: http://svn.code.sf.net/p/nuttx/code/trunk@5253 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
2012-10-24 23:40:31 +00:00
parent 8a2348d18d
commit e2018e4d30
9 changed files with 228 additions and 112 deletions
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nuttx/include/elf.h
+5 -4
View File
@@ -86,16 +86,17 @@
/* 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_MAG1 1 /* " " " " */
#define EI_MAG2 2 /* " " " " */
#define EI_MAG3 3 /* " " " " */
#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' }
#define EI_MAGIC_SIZE 4
#define EI_MAGIC {0x7f, 'E', 'L', 'F'}
/* Values for EI_CLASS */
nuttx/include/nuttx/binfmt/elf.h
+6 -32
View File
@@ -60,38 +60,12 @@
struct elf_loadinfo_s
{
/* Instruction Space (ISpace): This region contains the ELF file header
* plus everything from the text section. Ideally, will have only one mmap'ed
* text section instance in the system for each module.
*/
uint32_t ispace; /* Address where hdr/text is loaded */
uint32_t entryoffs; /* Offset from ispace to entry point */
uint32_t isize; /* Size of ispace. */
/* Data Space (DSpace): This region contains all information that in referenced
* as data (other than the stack which is separately allocated). There will be
* a unique instance of DSpace (and stack) for each instance of a process.
*/
FAR struct dspace_s *dspace; /* Allocated D-Space (data/bss/etc) */
uint32_t datasize; /* Size of data segment in dspace */
uint32_t bsssize; /* Size of bss segment in dspace */
uint32_t stacksize; /* Size of stack (not allocated) */
uint32_t dsize; /* Size of dspace (may be large than parts) */
/* This is temporary memory where relocation records will be loaded. */
uint32_t relocstart; /* Start of array of struct flat_reloc */
uint16_t reloccount; /* Number of elements in reloc array */
/* File descriptors */
int filfd; /* Descriptor for the file being loaded */
/* This is a copy of the ELF header */
Elf32_Ehdr header;
uintptr_t alloc; /* Allocated memory with the ELF file is loaded */
size_t allocsize; /* Size of the memory allocation */
off_t filelen; /* Length of the entire ELF file */
int filfd; /* Descriptor for the file being loaded */
Elf32_Ehdr ehdr; /* Buffered ELF file header */
FAR Elf32_Shdr *shdr; /* Buffered ELF section headers */
};
/****************************************************************************