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RISC-V: Include instruction hex in disassembly

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This was added to help debug issues using -d in_asm. It is
useful to see the instruction bytes, as one can detect if
one is trying to execute ASCII or device-tree magic.

Cc: Sagar Karandikar <sagark@eecs.berkeley.edu>
Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Michael Clark <mjc@sifive.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Michael Clark 2018-03-04 13:50:12 +13:00
parent 42b3a4b7cc
commit 6296a799b1
No known key found for this signature in database
GPG key ID: 6BF1D7B357EF3E4F
1 changed files with 20 additions and 19 deletions
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39
disas/riscv.c
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@ -2769,25 +2769,6 @@ static void format_inst(char *buf, size_t buflen, size_t tab, rv_decode *dec)
char tmp[64];
const char *fmt;
if (dec->op == rv_op_illegal) {
size_t len = inst_length(dec->inst);
switch (len) {
case 2:
snprintf(buf, buflen, "(0x%04" PRIx64 ")", dec->inst);
break;
case 4:
snprintf(buf, buflen, "(0x%08" PRIx64 ")", dec->inst);
break;
case 6:
snprintf(buf, buflen, "(0x%012" PRIx64 ")", dec->inst);
break;
default:
snprintf(buf, buflen, "(0x%016" PRIx64 ")", dec->inst);
break;
}
return;
}
fmt = opcode_data[dec->op].format;
while (*fmt) {
switch (*fmt) {
@ -3004,6 +2985,11 @@ disasm_inst(char *buf, size_t buflen, rv_isa isa, uint64_t pc, rv_inst inst)
format_inst(buf, buflen, 16, &dec);
}
#define INST_FMT_2 "%04" PRIx64 " "
#define INST_FMT_4 "%08" PRIx64 " "
#define INST_FMT_6 "%012" PRIx64 " "
#define INST_FMT_8 "%016" PRIx64 " "
static int
print_insn_riscv(bfd_vma memaddr, struct disassemble_info *info, rv_isa isa)
{
@ -3031,6 +3017,21 @@ print_insn_riscv(bfd_vma memaddr, struct disassemble_info *info, rv_isa isa)
}
}
switch (len) {
case 2:
(*info->fprintf_func)(info->stream, INST_FMT_2, inst);
break;
case 4:
(*info->fprintf_func)(info->stream, INST_FMT_4, inst);
break;
case 6:
(*info->fprintf_func)(info->stream, INST_FMT_6, inst);
break;
default:
(*info->fprintf_func)(info->stream, INST_FMT_8, inst);
break;
}
disasm_inst(buf, sizeof(buf), isa, memaddr, inst);
(*info->fprintf_func)(info->stream, "%s", buf);