diff options
| author | Christian Weisgerber <naddy@cvs.openbsd.org> | 2020-10-19 22:01:33 +0000 |
|---|---|---|
| committer | Christian Weisgerber <naddy@cvs.openbsd.org> | 2020-10-19 22:01:33 +0000 |
| commit | b08d7f25156cb96c664cf4bbec1fc1db4c58f45c (patch) | |
| tree | baed7a0e7ae4e14ed953ad923f199833da58b12e | |
| parent | 9941cc9efda213d32111bbe22780fe9e4a865220 (diff) | |
Decode the UDF ("permanently undefined") instruction in ddb(4)'s arm64
disassembler. The particular immediate16 format appears to be unique to
this instruction.
ok kettenis@ deraadt@
| -rw-r--r-- | sys/arch/arm64/arm64/disasm.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/sys/arch/arm64/arm64/disasm.c b/sys/arch/arm64/arm64/disasm.c index ac263d48407..89391d72ad7 100644 --- a/sys/arch/arm64/arm64/disasm.c +++ b/sys/arch/arm64/arm64/disasm.c @@ -1,4 +1,4 @@ -/* $OpenBSD: disasm.c,v 1.2 2020/09/11 09:27:10 mpi Exp $ */ +/* $OpenBSD: disasm.c,v 1.3 2020/10/19 22:01:32 naddy Exp $ */ /* $NetBSD: disasm.c,v 1.8 2020/05/26 05:25:21 ryo Exp $ */ /* @@ -3107,6 +3107,11 @@ OP4FUNC(op_tbz, b5, b40, imm14, Rt) PRINTF("\n"); } +OP1FUNC(op_udf, imm16) +{ + PRINTF("udf\t#0x%"PRIx64"\n", imm16); +} + OP4FUNC(op_udiv, sf, Rm, Rn, Rd) { PRINTF("udiv\t%s, %s, %s\n", @@ -3668,6 +3673,8 @@ struct insn_info { {{ 5,16}, { 0, 0}, { 0, 0}, { 0, 0}, { 0, 0}, { 0, 0}, { 0, 0}, { 0, 0}} #define FMT_IMM16_LL \ {{ 5,16}, { 0, 2}, { 0, 0}, { 0, 0}, { 0, 0}, { 0, 0}, { 0, 0}, { 0, 0}} +#define FMT_IMM16_UDF \ + {{ 0,16}, { 0, 0}, { 0, 0}, { 0, 0}, { 0, 0}, { 0, 0}, { 0, 0}, { 0, 0}} #define FMT_OP0_OP1_CRN_CRM_OP2_RT \ {{19, 2}, {16, 3}, {12, 4}, { 8, 4}, { 5, 3}, { 0, 5}, { 0, 0}, { 0, 0}} #define FMT_IMM7_RT2_RN_RT \ @@ -3786,6 +3793,7 @@ static const struct insn_info insn_tables[] = { { 0xffffd800, 0xdac10000, FMT_Z_M_RN_RD, op_pacia }, { 0xffffcc00, 0x4e284800, FMT_M_D_RN_RD, op_simd_aes }, { 0xffff8c00, 0x5e280800, FMT_OP3_RN_RD, op_simd_sha_reg2 }, + { 0xffff0000, 0x00000000, FMT_IMM16_UDF, op_udf }, { 0xfff8f01f, 0xd500401f, FMT_OP1_CRM_OP2, op_msr_imm }, { 0xfff80000, 0xd5080000, FMT_OP1_CRN_CRM_OP2_RT, op_sys }, { 0xfff80000, 0xd5280000, FMT_OP1_CRN_CRM_OP2_RT, op_sysl }, |