[v3,1/2] RISC-V: Fix buffer overflow on print_insn_riscv
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Commit Message
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.
---
include/opcode/riscv.h | 2 ++
opcodes/riscv-dis.c | 2 +-
2 files changed, 3 insertions(+), 1 deletion(-)
@@ -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;
}
@@ -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;