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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@5257 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
2012-10-25 16:18:20 +00:00
parent a91b6552cd
commit 630862cd04
15 changed files with 568 additions and 153 deletions
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nuttx/binfmt/elf.c
+55 -29
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@@ -64,6 +64,10 @@
# undef CONFIG_ELF_DUMPBUFFER
#endif
#ifndef CONFIG_ELF_STACKSIZE
# define CONFIG_ELF_STACKSIZE 2048
#endif
#ifdef CONFIG_ELF_DUMPBUFFER
# define elf_dumpbuffer(m,b,n) bvdbgdumpbuffer(m,b,n)
#else
@@ -104,33 +108,55 @@ static struct binfmt_s g_elfbinfmt =
#if defined(CONFIG_DEBUG) && defined(CONFIG_DEBUG_BINFMT)
static void elf_dumploadinfo(FAR struct elf_loadinfo_s *loadinfo)
{
unsigned long dsize = loadinfo->datasize + loadinfo->bsssize;
int i;
bdbg("LOAD_INFO:\n");
bdbg(" ISPACE:\n");
bdbg(" ispace: %08lx\n", loadinfo->ispace);
bdbg(" entryoffs: %08lx\n", loadinfo->entryoffs);
bdbg(" isize: %08lx\n", loadinfo->isize);
bdbg(" alloc: %08lx\n", (long)loadinfo->alloc);
bdbg(" allocsize: %ld\n", (long)loadinfo->allocsize);
bdbg(" filelen: %ld\n", (long)loadinfo->filelen);
#ifdef CONFIG_ELF_CONSTRUCTORS
bdbg(" ctors: %08lx\n", (long)loadinfo->ctors);
#endif
bdbg(" filfd: %d\n", loadinfo->filfd);
bdbg(" symtabidx: %d\n", loadinfo->symtabidx);
bdbg(" strtabidx: %d\n", loadinfo->strtabidx);
bdbg(" DSPACE:\n");
bdbg(" dspace: %08lx\n", loadinfo->dspace);
if (loadinfo->dspace != NULL)
bdbg("ELF Header:\n");
bdbg(" e_ident: %02x %02x %02x %02x\n",
loadinfo->ehdr.e_ident[0], loadinfo->ehdr.e_ident[1],
loadinfo->ehdr.e_ident[2], loadinfo->ehdr.e_ident[3]);
bdbg(" e_type: %04x\n", loadinfo->ehdr.e_type);
bdbg(" e_machine: %04x\n", loadinfo->ehdr.e_machine);
bdbg(" e_version: %08x\n", loadinfo->ehdr.e_version);
bdbg(" e_entry: %08lx\n", (long)loadinfo->ehdr.e_entry);
bdbg(" e_phoff: %d\n", loadinfo->ehdr.e_phoff);
bdbg(" e_shoff: %d\n", loadinfo->ehdr.e_shoff);
bdbg(" e_flags: %08x\n" , loadinfo->ehdr.e_flags);
bdbg(" e_ehsize: %d\n", loadinfo->ehdr.e_ehsize);
bdbg(" e_phentsize: %d\n", loadinfo->ehdr.e_phentsize);
bdbg(" e_phnum: %d\n", loadinfo->ehdr.e_phnum);
bdbg(" e_shentsize: %d\n", loadinfo->ehdr.e_shentsize);
bdbg(" e_shnum: %d\n", loadinfo->ehdr.e_shnum);
bdbg(" e_shstrndx: %d\n", loadinfo->ehdr.e_shstrndx);
if (loadinfo->shdr && loadinfo->ehdr.e_shum > 0)
{
bdbg(" crefs: %d\n", loadinfo->dspace->crefs);
bdbg(" region: %08lx\n", loadinfo->dspace->region);
for (i = 0; i < loadinfo->ehdr.e_shum; i++)
{
FAR ELF32_Shdr *shdr = &loadinfo->shdr[i];
bdbg("Sections %d:\n", i);
bdbg(" sh_name: %08x\n", shdr->sh_name);
bdbg(" sh_type: %08x\n", shdr->sh_type);
bdbg(" sh_flags: %08x\n", shdr->sh_flags);
bdbg(" sh_addr: %08x\n", shdr->sh_addr);
bdbg(" sh_offset: %d\n", shdr->sh_offset);
bdbg(" sh_size: %d\n", shdr->sh_size);
bdbg(" sh_link: %d\n", shdr->sh_link);
bdbg(" sh_info: %d\n", shdr->sh_info);
bdbg(" sh_addralign: %d\n", shdr->sh_addralign);
bdbg(" sh_entsize: %d\n", shdr->sh_entsize);
}
}
bdbg(" datasize: %08lx\n", loadinfo->datasize);
bdbg(" bsssize: %08lx\n", loadinfo->bsssize);
bdbg(" (pad): %08lx\n", loadinfo->dsize - dsize);
bdbg(" stacksize: %08lx\n", loadinfo->stacksize);
bdbg(" dsize: %08lx\n", loadinfo->dsize);
bdbg(" RELOCS:\n");
bdbg(" relocstart: %08lx\n", loadinfo->relocstart);
bdbg(" reloccount: %d\n", loadinfo->reloccount);
bdbg(" HANDLES:\n");
bdbg(" filfd: %d\n", loadinfo->filfd);
}
#else
# define elf_dumploadinfo(i)
@@ -148,7 +174,7 @@ static void elf_dumploadinfo(FAR struct elf_loadinfo_s *loadinfo)
static int elf_loadbinary(struct binary_s *binp)
{
struct elf_loadinfo_s loadinfo; /* Contains globals for libelf */
int ret;
int ret;
bvdbg("Loading file: %s\n", binp->filename);
@@ -183,14 +209,14 @@ static int elf_loadbinary(struct binary_s *binp)
/* Return the load information */
binp->entrypt = (main_t)(loadinfo.ispace + loadinfo.entryoffs);
binp->ispace = (void*)loadinfo.ispace;
binp->dspace = (void*)loadinfo.dspace;
binp->isize = loadinfo.isize;
binp->stacksize = loadinfo.stacksize;
binp->entrypt = (main_t)(loadinfo.alloc + loadinfo.ehdr.e_entry);
binp->ispace = (void*)loadinfo.alloc;
binp->dspace = NULL;
binp->isize = loadinfo.allocsize;
binp->stacksize = CONFIG_ELF_STACKSIZE;
elf_dumpbuffer("Entry code", (FAR const uint8_t*)binp->entrypt,
MIN(binp->isize - loadinfo.entryoffs,512));
MIN(binp->isize - loadinfo.ehdr.e_entry, 512));
elf_uninit(&loadinfo);
return OK;