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-rw-r--r--pk/elf.c71
1 files changed, 0 insertions, 71 deletions
diff --git a/pk/elf.c b/pk/elf.c
deleted file mode 100644
index ca44645..0000000
--- a/pk/elf.c
+++ /dev/null
@@ -1,71 +0,0 @@
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <elf.h>
-#include <string.h>
-#include "file.h"
-#include "pk.h"
-
-long load_elf(const char* fn, int* user64)
-{
- sysret_t ret = file_open(fn, strlen(fn)+1, O_RDONLY, 0);
- file_t* file = (file_t*)ret.result;
- if(ret.result == -1)
- goto fail;
-
- char buf[2048]; // XXX
- int header_size = file_read(file, buf, sizeof(buf)).result;
- const Elf64_Ehdr* eh64 = (const Elf64_Ehdr*)buf;
- if(header_size < (int)sizeof(Elf64_Ehdr) ||
- !(eh64->e_ident[0] == '\177' && eh64->e_ident[1] == 'E' &&
- eh64->e_ident[2] == 'L' && eh64->e_ident[3] == 'F'))
- goto fail;
-
- #define LOAD_ELF do { \
- eh = (typeof(eh))buf; \
- kassert(header_size >= eh->e_phoff + eh->e_phnum*sizeof(*ph)); \
- ph = (typeof(ph))(buf+eh->e_phoff); \
- for(int i = 0; i < eh->e_phnum; i++, ph++) { \
- if(ph->p_type == SHT_PROGBITS && ph->p_memsz) { \
- extern char _end; \
- if((char*)(long)ph->p_vaddr < &_end) \
- { \
- long diff = &_end - (char*)(long)ph->p_vaddr; \
- ph->p_vaddr += diff; \
- ph->p_offset += diff; \
- ph->p_memsz = diff >= ph->p_memsz ? 0 : ph->p_memsz - diff; \
- ph->p_filesz = diff >= ph->p_filesz ? 0 : ph->p_filesz - diff; \
- } \
- if(file_pread(file, (char*)(long)ph->p_vaddr, ph->p_filesz, ph->p_offset).result != ph->p_filesz) \
- goto fail; \
- memset((char*)(long)ph->p_vaddr+ph->p_filesz, 0, ph->p_memsz-ph->p_filesz); \
- } \
- } \
- } while(0)
-
- long entry;
- if(eh64->e_ident[EI_CLASS] == ELFCLASS32)
- {
- Elf32_Ehdr* eh;
- Elf32_Phdr* ph;
- LOAD_ELF;
- entry = eh->e_entry;
- }
- else if(eh64->e_ident[EI_CLASS] == ELFCLASS64)
- {
- Elf64_Ehdr* eh;
- Elf64_Phdr* ph;
- LOAD_ELF;
- entry = eh->e_entry;
- }
- else
- goto fail;
-
- *user64 = eh64->e_ident[EI_CLASS] == ELFCLASS64;
-
- file_decref(file);
-
- return entry;
-
-fail:
- panic("couldn't open ELF program: %s!", fn);
-}