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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, tpnt) \
do { \
Elf32_Sym *sym; \
unsigned long i; \
\
/* Add load address displacement to all local GOT entries */ \
i = 2; \
while (i < tpnt->dynamic_info[DT_MIPS_LOCAL_GOTNO_IDX]) \
got[i++] += load_addr; \
\
/* Handle global GOT entries */ \
got += tpnt->dynamic_info[DT_MIPS_LOCAL_GOTNO_IDX]; \
sym = (Elf32_Sym *) (tpnt->dynamic_info[DT_SYMTAB] + \
load_addr) + tpnt->dynamic_info[DT_MIPS_GOTSYM_IDX]; \
i = tpnt->dynamic_info[DT_MIPS_SYMTABNO_IDX] - tpnt->dynamic_info[DT_MIPS_GOTSYM_IDX];\
\
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) { \
if (symtab_index<tpnt->dynamic_info[DT_MIPS_GOTSYM_IDX])\
*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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