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1325 |
phoenix |
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/* Various assmbly language/system dependent hacks that are required
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so that we can minimize the amount of platform specific code. */
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/* Define this if the system uses RELOCA. */
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#define ELF_USES_RELOCA
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/* Get a pointer to the argv array. On many platforms this can be
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just the address if the first argument, on other platforms we need
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to do something a little more subtle here. */
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#define GET_ARGV(ARGVP, ARGS) ((ARGVP) = ((unsigned int *) &(ARGS)))
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/* Initialization sequence for a GOT. */
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#define INIT_GOT(GOT_BASE,MODULE) \
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{ \
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GOT_BASE[2] = (int) _dl_linux_resolve; \
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GOT_BASE[1] = (int) (MODULE); \
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}
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/* Here is a macro to perform a relocation. This is only used when
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bootstrapping the dynamic loader. RELP is the relocation that we
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are performing, REL is the pointer to the address we are
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relocating. SYMBOL is the symbol involved in the relocation, and
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LOAD is the load address. */
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#define PERFORM_BOOTSTRAP_RELOC(RELP,REL,SYMBOL,LOAD,SYMTAB) \
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switch (ELF32_R_TYPE ((RELP)->r_info)) \
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{ \
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case R_68K_8: \
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*(char *) (REL) = (SYMBOL) + (RELP)->r_addend; \
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break; \
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case R_68K_16: \
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*(short *) (REL) = (SYMBOL) + (RELP)->r_addend; \
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break; \
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case R_68K_32: \
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*(REL) = (SYMBOL) + (RELP)->r_addend; \
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break; \
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case R_68K_PC8: \
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*(char *) (REL) = ((SYMBOL) + (RELP)->r_addend \
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- (unsigned int) (REL)); \
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break; \
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case R_68K_PC16: \
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*(short *) (REL) = ((SYMBOL) + (RELP)->r_addend \
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- (unsigned int) (REL)); \
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break; \
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case R_68K_PC32: \
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*(REL) = ((SYMBOL) + (RELP)->r_addend \
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- (unsigned int) (REL)); \
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break; \
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case R_68K_GLOB_DAT: \
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case R_68K_JMP_SLOT: \
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*(REL) = (SYMBOL); \
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break; \
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case R_68K_RELATIVE: /* Compatibility kludge */ \
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*(REL) = ((unsigned int) (LOAD) + ((RELP)->r_addend ? : *(REL))); \
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break; \
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default: \
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_dl_exit (1); \
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}
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/* Transfer control to the user's application, once the dynamic loader
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is done. */
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#define START() \
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__asm__ volatile ("unlk %%a6\n\t" \
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"jmp %0@" \
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: : "a" (_dl_elf_main));
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/* Here we define the magic numbers that this dynamic loader should accept */
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#define MAGIC1 EM_68K
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#undef MAGIC2
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/* Used for error messages */
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#define ELF_TARGET "m68k"
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struct elf_resolve;
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extern unsigned int _dl_linux_resolver (int, int, struct elf_resolve *, int);
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/* Define this because we do not want to call .udiv in the library.
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Not needed for m68k. */
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#define do_rem(result, n, base) ((result) = (n) % (base))
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/* 4096 bytes alignment */
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#define PAGE_ALIGN 0xfffff000
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#define ADDR_ALIGN 0xfff
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#define OFFS_ALIGN 0x7ffff000
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