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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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