On Tue, 2025-07-08 at 01:30 -0700, Eduard Zingerman wrote: > On Mon, 2025-07-07 at 12:07 -0700, Eduard Zingerman wrote: > > On Thu, 2025-07-03 at 11:21 -0700, Eduard Zingerman wrote: > > > > [...] > > > > > > > > .jumptables > > > > > > <subprog-rel-off-0> > > > > > > <subprog-rel-off-1> | <--- jump table #1 symbol: > > > > > > <subprog-rel-off-2> | .size = 2 // number of entries in the jump table > > > > > > ... .value = 1 // offset within .jumptables > > > > > > <subprog-rel-off-N> ^ > > > > > > | > > > > > > .text | > > > > > > ... | > > > > > > <insn-N> <------ relocation referencing -' > > > > > > ... jump table #1 symbol > > > > [...] > > > > I think I got it working in: > > https://github.com/eddyz87/llvm-project/tree/separate-jumptables-section Pushed fixes. Relocations are now emitted for gotox and reference correct symbol: 0000000000000000 <foo>: 0: if w1 > 0x1f goto +0x10 <foo+0x88> 1: w1 = w1 2: r1 <<= 0x3 3: r2 = 0x0 ll 0000000000000018: R_BPF_64_64 .BPF.JT.0.0 5: r2 += r1 6: r1 = *(u64 *)(r2 + 0x0) 7: gotox r1 0000000000000038: R_BPF_64_64 .BPF.JT.0.0 8: goto +0x8 <foo+0x88> Two llvm BPF unit tests are failing: Failed Tests (2): LLVM :: CodeGen/BPF/CORE/offset-reloc-fieldinfo-2-bpfeb.ll LLVM :: CodeGen/BPF/CORE/offset-reloc-fieldinfo-2.ll But I think current state should be sufficient for basic testing.
