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79a4851ba7
add BPF disassembler, so tools like llvm-objdump can be used: $ llvm-objdump -d -no-show-raw-insn ./sockex1_kern.o ./sockex1_kern.o: file format ELF64-BPF Disassembly of section socket1: bpf_prog1: 0: r6 = r1 8: r0 = *(u8 *)skb[23] 10: *(u32 *)(r10 - 4) = r0 18: r1 = *(u32 *)(r6 + 4) 20: if r1 != 4 goto 8 28: r2 = r10 30: r2 += -4 ld_imm64 (the only 16-byte insn) and special ld_abs/ld_ind instructions had to be treated in a special way. The decoders for the rest of the insns are automatically generated. Add tests to cover new functionality. Signed-off-by: Alexei Starovoitov <ast@kernel.org> llvm-svn: 287477
20 lines
311 B
LLVM
20 lines
311 B
LLVM
; RUN: llc -march=bpfel -filetype=obj -o - %s | llvm-objdump -d - | FileCheck %s
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; CHECK: if r2 s> r1 goto
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; CHECK: call
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; CHECK: exit
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declare void @a()
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declare void @b()
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define void @foo(i32 %a) {
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%b = icmp sgt i32 %a, -1
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br i1 %b, label %x, label %y
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x:
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call void @a()
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ret void
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y:
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call void @b()
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ret void
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}
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