[PATCH] sim: bpf: remove negi, neg32i insns

[David Faust <david.faust@oracle.com>]

The BPF virtual machine does not support neg instructions operating on
immediates, and these erroneous instructions were recently removed from
gas.  Remove them from the simulator as well.

binutils patch:
[PATCH] bpf: correct neg and neg32 instruction encoding
https://sourceware.org/pipermail/binutils/2023-August/129135.html

---
 sim/bpf/bpf-sim.c | 8 --------
 1 file changed, 8 deletions(-)

diff --git a/sim/bpf/bpf-sim.c b/sim/bpf/bpf-sim.c
index 5e01ddeca9f..a4af22b2308 100644
--- a/sim/bpf/bpf-sim.c
+++ b/sim/bpf/bpf-sim.c
@@ -730,10 +730,6 @@ execute (SIM_CPU *cpu, struct bpf_insn *insn)
       BPF_TRACE ("BPF_INSN_NEGR\n");
       bpf_regs[insn->dst] = - (int64_t) bpf_regs[insn->dst];
       break;
-    case BPF_INSN_NEGI:
-      BPF_TRACE ("BPF_INSN_NEGI\n");
-      bpf_regs[insn->dst] = - (int64_t) insn->imm32;
-      break;
     case BPF_INSN_LSHR:
       BPF_TRACE ("BPF_INSN_LSHR\n");
       bpf_regs[insn->dst] <<= bpf_regs[insn->src];
@@ -867,10 +863,6 @@ execute (SIM_CPU *cpu, struct bpf_insn *insn)
       BPF_TRACE ("BPF_INSN_NEG32R\n");
       bpf_regs[insn->dst] = (uint32_t) (- (int32_t) bpf_regs[insn->dst]);
       break;
-    case BPF_INSN_NEG32I:
-      BPF_TRACE ("BPF_INSN_NEG32I\n");
-      bpf_regs[insn->dst] = (uint32_t) - (int32_t) insn->imm32;
-      break;
     case BPF_INSN_LSH32R:
       BPF_TRACE ("BPF_INSN_LSH32R\n");
       bpf_regs[insn->dst] = (uint32_t) bpf_regs[insn->dst] << bpf_regs[insn->src];
-- 
2.40.1