| 1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162 |
- /* 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. See arm/boot1_arch.h for an example of what
- * can be done.
- */
- #define DL_BOOT(X) __attribute__ ((unused)) void _dl_boot (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. We assume that argc is stored
- * at the word just below the argvp that we return here.
- */
- #define GET_ARGV(ARGVP, ARGS) __asm__("\tadd %%fp,68,%0\n" : "=r" (ARGVP));
- /*
- * 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_SPARC_32: \
- *REL = SYMBOL + (RELP)->r_addend; \
- break; \
- case R_SPARC_GLOB_DAT: \
- *REL = SYMBOL + (RELP)->r_addend; \
- break; \
- case R_SPARC_JMP_SLOT: \
- REL[1] = 0x03000000 | ((SYMBOL >> 10) & 0x3fffff); \
- REL[2] = 0x81c06000 | (SYMBOL & 0x3ff); \
- break; \
- case R_SPARC_NONE: \
- break; \
- case R_SPARC_WDISP30: \
- break; \
- case R_SPARC_RELATIVE: \
- *REL += (unsigned int) LOAD + (RELP)->r_addend; \
- break; \
- default: \
- _dl_exit(1); \
- }
- /*
- * Transfer control to the user's application, once the dynamic loader
- * is done. The crt calls atexit with $g1 if not null, so we need to
- * ensure that it contains NULL.
- */
- #define START() \
- __asm__ volatile ( \
- "add %%g0,%%g0,%%g1\n\t" \
- "jmpl %0, %%o7\n\t" \
- "restore %%g0,%%g0,%%g0\n\t" \
- : /*"=r" (status) */ : \
- "r" (_dl_elf_main): "g1", "o0", "o1")
|
