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[/] [or1k/] [trunk/] [linux/] [uClibc/] [ldso/] [ldso/] [sh/] [ld_sysdep.h] - Rev 1325
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/* * Various assmbly language/system dependent hacks that are required * so that we can minimize the amount of platform specific code. */ /* * Define this if the system uses RELOCA. */ #define ELF_USES_RELOCA /* * 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) /* * Initialization sequence for a GOT. */ #define INIT_GOT(GOT_BASE,MODULE) \ { \ GOT_BASE[2] = (unsigned long) _dl_linux_resolve; \ GOT_BASE[1] = (unsigned long) (MODULE); \ } /* * 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: \ SEND_STDERR("BOOTSTRAP_RELOC: unhandled reloc type "); \ SEND_NUMBER_STDERR(ELF32_R_TYPE((RELP)->r_info), 1); \ SEND_STDERR("REL, SYMBOL, LOAD: "); \ SEND_ADDRESS_STDERR(REL, 0); \ SEND_STDERR(", "); \ SEND_ADDRESS_STDERR(SYMBOL, 0); \ SEND_STDERR(", "); \ SEND_ADDRESS_STDERR(LOAD, 1); \ _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. */ #define START() return _dl_elf_main; /* Here we define the magic numbers that this dynamic loader should accept */ #define MAGIC1 EM_SH #undef MAGIC2 /* Used for error messages */ #define ELF_TARGET "sh" struct elf_resolve; extern unsigned long _dl_linux_resolver(struct elf_resolve * tpnt, int reloc_entry); static __inline__ unsigned int _dl_urem(unsigned int n, unsigned int base) { int res; __asm__ (""\ "mov #0, r0\n\t" \ "div0u\n\t" \ "" \ "! get one bit from the msb of the numerator into the T\n\t" \ "! bit and divide it by whats in %2. Put the answer bit\n\t" \ "! into the T bit so it can come out again at the bottom\n\t" \ "" \ "rotcl %1 ; div1 %2, r0\n\t" \ "rotcl %1 ; div1 %2, r0\n\t" \ "rotcl %1 ; div1 %2, r0\n\t" \ "rotcl %1 ; div1 %2, r0\n\t" \ "rotcl %1 ; div1 %2, r0\n\t" \ "rotcl %1 ; div1 %2, r0\n\t" \ "rotcl %1 ; div1 %2, r0\n\t" \ "rotcl %1 ; div1 %2, r0\n\t" \ "" \ "rotcl %1 ; div1 %2, r0\n\t" \ "rotcl %1 ; div1 %2, r0\n\t" \ "rotcl %1 ; div1 %2, r0\n\t" \ "rotcl %1 ; div1 %2, r0\n\t" \ "rotcl %1 ; div1 %2, r0\n\t" \ "rotcl %1 ; div1 %2, r0\n\t" \ "rotcl %1 ; div1 %2, r0\n\t" \ "rotcl %1 ; div1 %2, r0\n\t" \ "" \ "rotcl %1 ; div1 %2, r0\n\t" \ "rotcl %1 ; div1 %2, r0\n\t" \ "rotcl %1 ; div1 %2, r0\n\t" \ "rotcl %1 ; div1 %2, r0\n\t" \ "rotcl %1 ; div1 %2, r0\n\t" \ "rotcl %1 ; div1 %2, r0\n\t" \ "rotcl %1 ; div1 %2, r0\n\t" \ "rotcl %1 ; div1 %2, r0\n\t" \ "" \ "rotcl %1 ; div1 %2, r0\n\t" \ "rotcl %1 ; div1 %2, r0\n\t" \ "rotcl %1 ; div1 %2, r0\n\t" \ "rotcl %1 ; div1 %2, r0\n\t" \ "rotcl %1 ; div1 %2, r0\n\t" \ "rotcl %1 ; div1 %2, r0\n\t" \ "rotcl %1 ; div1 %2, r0\n\t" \ "rotcl %1 ; div1 %2, r0\n\t" \ "rotcl %1\n\t" : "=r" (res) : "0" (n), "r" (base) : "r0","cc"); return n - (base * res); } #define do_rem(result, n, base) ((result) = _dl_urem((n), (base))) /* 4096 bytes alignment */ #define PAGE_ALIGN 0xfffff000 #define ADDR_ALIGN 0xfff #define OFFS_ALIGN 0x7ffff000
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