mirror of
https://github.com/radareorg/radare2.git
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100 lines
2.6 KiB
C
100 lines
2.6 KiB
C
/* radare - LGPL - Copyright 2012-2018 - pancake */
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#include <stdio.h>
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#include <stdarg.h>
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#include <string.h>
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#include <r_types.h>
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#include <r_lib.h>
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#include <r_util.h>
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#include <r_asm.h>
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#include "disas-asm.h"
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#include <mybfd.h>
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/* extern */
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int decodeInstr (bfd_vma address, disassemble_info * info);
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int ARCTangent_decodeInstr (bfd_vma address, disassemble_info * info);
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int ARCompact_decodeInstr (bfd_vma address, disassemble_info * info);
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/* ugly globals */
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static ut32 Offset = 0;
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static RStrBuf *buf_global = NULL;
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static int buf_len = 0;
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static ut8 bytes[32] = {0};
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static int arc_buffer_read_memory (bfd_vma memaddr, bfd_byte *myaddr, unsigned int length, struct disassemble_info *info) {
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int delta = (memaddr - Offset);
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if (delta < 0) {
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return -1; // disable backward reads
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}
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if ((delta + length) > sizeof (bytes)) {
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return -1;
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}
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memcpy (myaddr, bytes + delta, R_MIN (buf_len - delta, length));
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return 0;
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}
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static int symbol_at_address(bfd_vma addr, struct disassemble_info * info) {
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return 0;
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}
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static void memory_error_func(int status, bfd_vma memaddr, struct disassemble_info *info) {
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//--
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}
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DECLARE_GENERIC_PRINT_ADDRESS_FUNC()
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DECLARE_GENERIC_FPRINTF_FUNC()
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static int disassemble(RAsm *a, RAsmOp *op, const ut8 *buf, int len) {
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static struct disassemble_info disasm_obj;
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if (len < 2) {
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return -1;
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}
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buf_global = &op->buf_asm;
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Offset = a->pc;
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if (len > sizeof (bytes)) {
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len = sizeof (bytes);
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}
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memcpy (bytes, buf, len); // TODO handle compact
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buf_len = len;
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/* prepare disassembler */
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memset (&disasm_obj,'\0', sizeof (struct disassemble_info));
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disasm_obj.buffer = bytes;
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disasm_obj.buffer_length = len;
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disasm_obj.read_memory_func = &arc_buffer_read_memory;
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disasm_obj.symbol_at_address_func = &symbol_at_address;
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disasm_obj.memory_error_func = &memory_error_func;
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disasm_obj.print_address_func = &generic_print_address_func;
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disasm_obj.endian = !a->big_endian;
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disasm_obj.fprintf_func = &generic_fprintf_func;
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disasm_obj.stream = stdout;
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disasm_obj.mach = 0;
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r_strbuf_set (&op->buf_asm, "");
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if (a->bits == 16) {
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op->size = ARCompact_decodeInstr ((bfd_vma)Offset, &disasm_obj);
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} else {
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op->size = ARCTangent_decodeInstr ((bfd_vma)Offset, &disasm_obj);
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}
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if (op->size == -1) {
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r_strbuf_set (&op->buf_asm, "(data)");
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}
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return op->size;
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}
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RAsmPlugin r_asm_plugin_arc = {
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.name = "arc",
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.arch = "arc",
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.bits = 16 | 32,
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.endian = R_SYS_ENDIAN_LITTLE | R_SYS_ENDIAN_BIG,
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.desc = "Argonaut RISC Core",
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.disassemble = &disassemble,
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.license = "GPL3"
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};
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#ifndef R2_PLUGIN_INCORE
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R_API RLibStruct radare_plugin = {
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.type = R_LIB_TYPE_ASM,
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.data = &r_asm_plugin_arc,
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.version = R2_VERSION
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};
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#endif
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