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- /* Any assmbly language/system dependent hacks needed to setup boot1.c so it
- * will work as expected and cope with whatever platform specific wierdness is
- * needed for this architecture.
- */
- asm("" \
- " .text\n" \
- " .globl _dl_boot\n" \
- "_dl_boot:\n" \
- " .set noreorder\n" \
- " bltzal $0, 0f\n" \
- " nop\n" \
- "0: .cpload $31\n" \
- " .set reorder\n" \
- " la $4, _DYNAMIC\n" \
- " sw $4, -0x7ff0($28)\n" \
- " move $4, $29\n" \
- " la $8, coff\n" \
- " .set noreorder\n" \
- " bltzal $0, coff\n" \
- " nop\n" \
- "coff: subu $8, $31, $8\n" \
- " .set reorder\n" \
- " la $25, _dl_boot2\n" \
- " addu $25, $8\n" \
- " jalr $25\n" \
- " lw $4, 0($29)\n" \
- " la $5, 4($29)\n" \
- " sll $6, $4, 2\n" \
- " addu $6, $6, $5\n" \
- " addu $6, $6, 4\n" \
- " la $7, _dl_elf_main\n" \
- " lw $25, 0($7)\n" \
- " jr $25\n" \
- );
- #define DL_BOOT(X) static void __attribute_used__ _dl_boot2 (X)
- /*
- * Get a pointer to the argv array. On many platforms this can be just
- * the address if the first argument, on other platforms we need to
- * do something a little more subtle here.
- */
- #define GET_ARGV(ARGVP, ARGS) ARGVP = ((unsigned long *) ARGS)
- /*
- * Here is a macro to perform the GOT relocation. This is only
- * used when bootstrapping the dynamic loader.
- */
- #define PERFORM_BOOTSTRAP_GOT(got) \
- do { \
- Elf32_Sym *sym; \
- unsigned long i; \
- \
- /* Add load address displacement to all local GOT entries */ \
- i = 2; \
- while (i < tpnt->mips_local_gotno) \
- got[i++] += load_addr; \
- \
- /* Handle global GOT entries */ \
- got += tpnt->mips_local_gotno; \
- sym = (Elf32_Sym *) (tpnt->dynamic_info[DT_SYMTAB] + \
- load_addr) + tpnt->mips_gotsym; \
- i = tpnt->mips_symtabno - tpnt->mips_gotsym; \
- \
- while (i--) { \
- if (sym->st_shndx == SHN_UNDEF || \
- sym->st_shndx == SHN_COMMON) \
- *got = load_addr + sym->st_value; \
- else if (ELF32_ST_TYPE(sym->st_info) == STT_FUNC && \
- *got != sym->st_value) \
- *got += load_addr; \
- else if (ELF32_ST_TYPE(sym->st_info) == STT_SECTION) { \
- if (sym->st_other == 0) \
- *got += load_addr; \
- } \
- else \
- *got = load_addr + sym->st_value; \
- \
- got++; \
- sym++; \
- } \
- } while (0)
- /*
- * Here is a macro to perform a relocation. This is only used when
- * bootstrapping the dynamic loader.
- */
- #define PERFORM_BOOTSTRAP_RELOC(RELP,REL,SYMBOL,LOAD,SYMTAB) \
- switch(ELF32_R_TYPE((RELP)->r_info)) { \
- case R_MIPS_REL32: \
- if (symtab_index) { \
- if (symtab_index < tpnt->mips_gotsym) \
- *REL += SYMBOL; \
- } \
- else { \
- *REL += LOAD; \
- } \
- break; \
- case R_MIPS_NONE: \
- break; \
- default: \
- SEND_STDERR("Aiieeee!"); \
- _dl_exit(1); \
- }
- /*
- * Transfer control to the user's application, once the dynamic loader
- * is done. This routine has to exit the current function, then
- * call the _dl_elf_main function. For MIPS, we do it in assembly
- * because the stack doesn't get properly restored otherwise. Got look
- * at boot1_arch.h
- */
- #define START()
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