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RISC-V: Fix buffer overflow on print_insn_riscv

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Because riscv_insn_length started to support instructions up to 176-bit,
we need to increase packet buffer size to 176-bit in size.

include/ChangeLog:

	* opcode/riscv.h (RISCV_MAX_INSN_LEN): Max instruction length for
	use in buffer size.

opcodes/ChangeLog:

	* riscv-dis.c (print_insn_riscv): Increase buffer size for max
	176-bit length instructions.
This commit is contained in:
Tsukasa OI 2022-10-04 08:35:30 +00:00
parent 136ea87420
commit 73e30e726c
2 changed files with 3 additions and 1 deletions
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2
include/opcode/riscv.h
View File

@ -40,6 +40,8 @@ static inline unsigned int riscv_insn_length (insn_t insn)
/* 80- ... 176-bit instructions. */
if ((insn & 0x7f) == 0x7f && (insn & 0x7000) != 0x7000)
return 10 + ((insn >> 11) & 0xe);
/* Maximum value returned by this function. */
#define RISCV_MAX_INSN_LEN 22
/* Longer instructions not supported at the moment. */
return 2;
}

2
opcodes/riscv-dis.c
View File

@ -1000,7 +1000,7 @@ riscv_disassemble_data (bfd_vma memaddr ATTRIBUTE_UNUSED,
int
print_insn_riscv (bfd_vma memaddr, struct disassemble_info *info)
{
bfd_byte packet[8];
bfd_byte packet[RISCV_MAX_INSN_LEN];
insn_t insn = 0;
bfd_vma dump_size;
int status;