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| author | David Faust <david.faust@oracle.com> | 2023-08-21 09:07:11 -0700 |
|---|---|---|
| committer | David Faust <david.faust@oracle.com> | 2023-08-21 10:07:25 -0700 |
| commit | 41aa80c5440ff24fc931fa2a3e681213dc1dbdec (patch) | |
| tree | eeda5e5d2a14d7f6927af428599c89d089a259d8 /include | |
| parent | 11e3488d3f787d51196a115fd9c6085e57bd9626 (diff) | |
| download | gdb-41aa80c5440ff24fc931fa2a3e681213dc1dbdec.zip gdb-41aa80c5440ff24fc931fa2a3e681213dc1dbdec.tar.gz gdb-41aa80c5440ff24fc931fa2a3e681213dc1dbdec.tar.bz2 | |
bpf: correct neg and neg32 instruction encoding
The neg/neg32 BPF instructions always use BPF_SRC_K (=0) in their header
source bit, despite operating on registers. If BPF_SRC_X (=1) is set,
the instructions are rejected by the kernel.
Because of this there are also no neg/neg32 instructions which operate
on immediates, so remove them.
bd434cc4d94ec3d2f9fc1e7c00c27b074f962bc1 was a similar fix in the old
CGEN-based port, but was not carried forward in the new port.
include/
* opcode/bpf.h (enum bpf_insn_id): Remove spurious entries
BPF_INSN_NEGI and BPF_INSN_NEG32I.
opcodes/
* bpf-opc.c (bpf_opcodes): Remove erroneous NEGI and NEG32I
instructions.
gas/
* doc/c-bpf.texi (BPF Instructions): Remove erroneous neg and
neg32 instructions operating on immediates.
* testsuite/gas/bpf/alu.s: Adapt accordingly.
* testsuite/gas/bpf/alu.d: Likewise.
* testsuite/gas/bpf/alu-be.d: Likewise
* testsuite/gas/bpf/alu32.s: Likewise.
* testsuite/gas/bpf/alu32.d: Likewise.
* testsuite/gas/bpf/alu32-be.d: Likewise.
* testsuite/gas/bpf/alu-pseudoc.s: Likewise.
* testsuite/gas/bpf/alu-pseudoc.d: Likewise.
* testsuite/gas/bpf/alu-be-pseudoc.d: Likewise.
* testsuite/gas/bpf/alu32-pseudoc.s: Likewise.
* testsuite/gas/bpf/alu32-pseudoc.d: Likewise.
* testsuite/gas/bpf/alu32-be-pseudoc.d: Likewise.
Diffstat (limited to 'include')
| -rw-r--r-- | include/opcode/bpf.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/opcode/bpf.h b/include/opcode/bpf.h index 6decae4..a8a9595 100644 --- a/include/opcode/bpf.h +++ b/include/opcode/bpf.h @@ -168,7 +168,7 @@ enum bpf_insn_id BPF_INSN_SMODR, BPF_INSN_SMODI, BPF_INSN_DIVR, BPF_INSN_DIVI, BPF_INSN_MODR, BPF_INSN_MODI, BPF_INSN_ORR, BPF_INSN_ORI, BPF_INSN_ANDR, BPF_INSN_ANDI, BPF_INSN_XORR, BPF_INSN_XORI, - BPF_INSN_NEGR, BPF_INSN_NEGI, BPF_INSN_LSHR, BPF_INSN_LSHI, + BPF_INSN_NEGR, BPF_INSN_LSHR, BPF_INSN_LSHI, BPF_INSN_RSHR, BPF_INSN_RSHI, BPF_INSN_ARSHR, BPF_INSN_ARSHI, BPF_INSN_MOVS8R, BPF_INSN_MOVS16R, BPF_INSN_MOVS32R, BPF_INSN_MOVR, BPF_INSN_MOVI, @@ -178,7 +178,7 @@ enum bpf_insn_id BPF_INSN_SMOD32R, BPF_INSN_SMOD32I, BPF_INSN_DIV32R, BPF_INSN_DIV32I, BPF_INSN_MOD32R, BPF_INSN_MOD32I, BPF_INSN_OR32R, BPF_INSN_OR32I, BPF_INSN_AND32R, BPF_INSN_AND32I, BPF_INSN_XOR32R, BPF_INSN_XOR32I, - BPF_INSN_NEG32R, BPF_INSN_NEG32I, BPF_INSN_LSH32R, BPF_INSN_LSH32I, + BPF_INSN_NEG32R, BPF_INSN_LSH32R, BPF_INSN_LSH32I, BPF_INSN_RSH32R, BPF_INSN_RSH32I, BPF_INSN_ARSH32R, BPF_INSN_ARSH32I, BPF_INSN_MOVS328R, BPF_INSN_MOVS3216R, BPF_INSN_MOVS3232R, BPF_INSN_MOV32R, BPF_INSN_MOV32I, |