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[/] [openrisc/] [tags/] [or1ksim/] [or1ksim-0.4.0rc1/] [cpu/] [or32/] [dyngen-i386.c] - Rev 222
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/* dyngen-i386.c -- i386 parts of dyngen Copyright (C) 2005 György `nog' Jeney, nog@sdf.lonestar.org This file is part of OpenRISC 1000 Architectural Simulator. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include <stdio.h> #include <stdint.h> #include <stdlib.h> #include <elf.h> #include "dyngen.h" #define RET_OPCODE 0xc3 unsigned int i386_get_real_func_len(void *f_start, unsigned int f_len, char *name) { if(((uint8_t *)f_start)[f_len - 1] != RET_OPCODE) { fprintf(stderr, "`%s' does not have a ret at the end!\n", name); exit(1); } return f_len - 1; } void i386_gen_reloc(FILE *f, struct reloc *reloc, unsigned int param) { switch(reloc->type) { case R_386_32: fprintf(f, " *(uint32_t *)(host_page + %d) = *(ops_param + %u) + %d;\n", reloc->func_offset, param - 1, reloc->addend); break; default: fprintf(stderr, "Unknown i386 relocation: %i (%s)\n", reloc->type, reloc->name); } } void i386_gen_func_reloc(FILE *f, struct reloc *reloc) { switch(reloc->type) { case R_386_32: /* This relocation is absolute. There is nothing to relocate (The linker * handles this fine). */ break; case R_386_PC32: fprintf(f, " *(uint32_t *)(host_page + %d) = (uint32_t)((%s + %d) - (unsigned int)(host_page + %d));\n", reloc->func_offset, reloc->name, reloc->addend, reloc->func_offset); break; default: fprintf(stderr, "Unknown i386 relocation: %i (symbol: %s)\n", reloc->type, reloc->name); } } const struct archf archfs = { i386_get_real_func_len, i386_gen_reloc, i386_gen_func_reloc };
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