#ifdef TARGET_DEFS_ONLY
#define EM_TCC_TARGET EM_C60
/* relocation type for 32 bit data relocation */
#define R_DATA_32 R_C60_32
#define R_DATA_PTR R_C60_32
#define R_JMP_SLOT R_C60_JMP_SLOT
#define R_GLOB_DAT R_C60_GLOB_DAT
#define R_COPY R_C60_COPY
#define R_RELATIVE R_C60_RELATIVE
#define R_NUM R_C60_NUM
#define ELF_START_ADDR 0x00000400
#define ELF_PAGE_SIZE 0x1000
#define PCRELATIVE_DLLPLT 0
#define RELOCATE_DLLPLT 0
#else /* !TARGET_DEFS_ONLY */
#include "tcc.h"
/* Returns 1 for a code relocation, 0 for a data relocation. For unknown
relocations, returns -1. */
int code_reloc (int reloc_type)
{
switch (reloc_type) {
case R_C60_32:
case R_C60LO16:
case R_C60HI16:
case R_C60_GOT32:
case R_C60_GOTOFF:
case R_C60_GOTPC:
case R_C60_COPY:
return 0;
case R_C60_PLT32:
return 1;
}
tcc_error ("Unknown relocation type: %d", reloc_type);
return -1;
}
/* Returns an enumerator to describe whether and when the relocation needs a
GOT and/or PLT entry to be created. See tcc.h for a description of the
different values. */
int gotplt_entry_type (int reloc_type)
{
switch (reloc_type) {
case R_C60_32:
case R_C60LO16:
case R_C60HI16:
case R_C60_COPY:
return NO_GOTPLT_ENTRY;
case R_C60_GOTOFF:
case R_C60_GOTPC:
return BUILD_GOT_ONLY;
case R_C60_PLT32:
case R_C60_GOT32:
return ALWAYS_GOTPLT_ENTRY;
}
tcc_error ("Unknown relocation type: %d", reloc_type);
return -1;
}
ST_FUNC unsigned create_plt_entry(TCCState *s1, unsigned got_offset, struct sym_attr *attr)
{
tcc_error("C67 got not implemented");
return 0;
}
/* relocate the PLT: compute addresses and offsets in the PLT now that final
address for PLT and GOT are known (see fill_program_header) */
ST_FUNC void relocate_plt(TCCState *s1)
{
uint8_t *p, *p_end;
if (!s1->plt)
return;
p = s1->plt->data;
p_end = p + s1->plt->data_offset;
if (p < p_end) {
/* XXX: TODO */
while (p < p_end) {
/* XXX: TODO */
}
}
}
void relocate_init(Section *sr) {}
void relocate(TCCState *s1, ElfW_Rel *rel, int type, unsigned char *ptr, addr_t addr, addr_t val)
{
switch(type) {
case R_C60_32:
*(int *)ptr += val;
break;
case R_C60LO16:
{
uint32_t orig;
/* put the low 16 bits of the absolute address add to what is
already there */
orig = ((*(int *)(ptr )) >> 7) & 0xffff;
orig |= (((*(int *)(ptr+4)) >> 7) & 0xffff) << 16;
/* patch both at once - assumes always in pairs Low - High */
*(int *) ptr = (*(int *) ptr & (~(0xffff << 7)) ) |
(((val+orig) & 0xffff) << 7);
*(int *)(ptr+4) = (*(int *)(ptr+4) & (~(0xffff << 7)) ) |
((((val+orig)>>16) & 0xffff) << 7);
}
break;
case R_C60HI16:
break;
default:
fprintf(stderr,"FIXME: handle reloc type %x at %x [%p] to %x\n",
type, (unsigned) addr, ptr, (unsigned) val);
break;
}
}
#endif /* !TARGET_DEFS_ONLY */