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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 _start\n"
" .type _start,@function\n"
"_start:\n"
" mov r15, r4\n"
" mov.l .L_dl_start, r0\n"
" bsrf r0\n"
" add #4, r4\n"
".jmp_loc:\n"
" mov r0, r8 ! Save the user entry point address in r8\n"
" mov.l .L_got, r12 ! Load the GOT on r12\n"
" mova .L_got, r0\n"
" add r0, r12\n"
" mov.l .L_dl_fini, r0\n"
" mov.l @(r0,r12), r4 ! Pass the finalizer in r4\n"
" jmp @r8\n"
" nop\n"
".L_dl_start:\n"
" .long _dl_start-.jmp_loc\n"
".L_dl_fini:\n"
" .long _dl_fini@GOT\n"
".L_got:\n"
" .long _GLOBAL_OFFSET_TABLE_\n"
" .size _start,.-_start\n"
" .previous\n"
);
/*
* 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)
/* We can't call functions earlier in the dl startup process */
#define NO_FUNCS_BEFORE_BOOTSTRAP
/*
* Here is a macro to perform a relocation. This is only used when
* bootstrapping the dynamic loader. RELP is the relocation that we
* are performing, REL is the pointer to the address we are relocating.
* SYMBOL is the symbol involved in the relocation, and LOAD is the
* load address.
*/
#define PERFORM_BOOTSTRAP_RELOC(RELP,REL,SYMBOL,LOAD,SYMTAB) \
switch(ELF32_R_TYPE((RELP)->r_info)){ \
case R_SH_REL32: \
*(REL) = (SYMBOL) + (RELP)->r_addend \
- (unsigned long)(REL); \
break; \
case R_SH_DIR32: \
case R_SH_GLOB_DAT: \
case R_SH_JMP_SLOT: \
*(REL) = (SYMBOL) + (RELP)->r_addend; \
break; \
case R_SH_RELATIVE: \
*(REL) = (LOAD) + (RELP)->r_addend; \
break; \
case R_SH_NONE: \
break; \
default: \
_dl_exit(1); \
}
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