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llvm-project/llvm/test/MC/BPF/insn-unit.s

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[bpf] Fix test to always use little endian. r313055 broke the big endian buildbots as the CHECK lines contained little endian data but -triple bpf uses the host endian. llvm-svn: 313281
2017-09-15 01:55:50 +08:00
# RUN: llvm-mc -triple bpfel -filetype=obj -o %t %s
bpf: New disassembler testcases for 32-bit subregister support This patch test disassembler output for load/store instructions when -mattr=+alu32 specified for which we want to use "w" register format. Also, this patch extended the existing insn-unit.s and insn-unit-32.s to make sure disassemblers for all other instructions are not affected. Signed-off-by: Jiong Wang <jiong.wang@netronome.com> Reviewed-by: Yonghong Song <yhs@fb.com> llvm-svn: 325993
2018-02-24 07:49:35 +08:00
# RUN: llvm-objdump -d -r %t | FileCheck --check-prefixes CHECK,CHECK-64 %s
[test] llvm/test/: change llvm-objdump single-dash long options to double-dash options As announced here: http://lists.llvm.org/pipermail/llvm-dev/2019-April/131786.html Grouped option syntax (POSIX Utility Conventions) does not play well with -long-option A subsequent change will reject -long-option.
2020-03-16 07:17:52 +08:00
# RUN: llvm-objdump --mattr=+alu32 -d -r %t | FileCheck --check-prefixes CHECK,CHECK-32 %s
bpf: Add BPF AsmParser support in LLVM Reviewed-by: Yonghong Song <yhs@fb.com> Signed-off-by: Jiong Wang <jiong.wang@netronome.com> llvm-svn: 313055
2017-09-13 01:55:23 +08:00
// ======== BPF_LD Class ========
// Some extra whitespaces are deliberately added to test the parser.
r0 = * (u8 *)skb[0] // BPF_LD | BPF_ABS | BPF_B
r0 = *(u16 *)skb[2] // BPF_LD | BPF_ABS | BPF_H
r0 = * (u32*)skb[4] // BPF_LD | BPF_ABS | BPF_W
// CHECK: 30 00 00 00 00 00 00 00 r0 = *(u8 *)skb[0]
// CHECK: 28 00 00 00 02 00 00 00 r0 = *(u16 *)skb[2]
// CHECK: 20 00 00 00 04 00 00 00 r0 = *(u32 *)skb[4]
r0 = * (u8 *)skb[r0] // BPF_LD | BPF_IND | BPF_B
r0 = * (u16 *)skb[r1] // BPF_LD | BPF_IND | BPF_H
r0 = *(u32 *)skb[r2] // BPF_LD | BPF_IND | BPF_W
// CHECK: 50 00 00 00 00 00 00 00 r0 = *(u8 *)skb[r0]
// CHECK: 48 10 00 00 00 00 00 00 r0 = *(u16 *)skb[r1]
// CHECK: 40 20 00 00 00 00 00 00 r0 = *(u32 *)skb[r2]
r9 = 0xffffffff ll // BPF_LD | BPF_DW | BPF_IMM
r9 = 8589934591 ll // BPF_LD | BPF_DW | BPF_IMM
r9 = 0x1ffffffff ll // BPF_LD | BPF_DW | BPF_IMM
r9 = dummy_map ll // BPF_LD | BPF_DW | BPF_IMM
// CHECK: 18 09 00 00 ff ff ff ff 00 00 00 00 00 00 00 00 r9 = 4294967295 ll
// CHECK: 18 09 00 00 ff ff ff ff 00 00 00 00 01 00 00 00 r9 = 8589934591 ll
// CHECK: 18 09 00 00 ff ff ff ff 00 00 00 00 01 00 00 00 r9 = 8589934591 ll
// CHECK: 18 09 00 00 00 00 00 00 00 00 00 00 00 00 00 00 r9 = 0 ll
// CHECK: 0000000000000060: R_BPF_64_64 dummy_map
// ======== BPF_LDX Class ========
r5 = *(u8 *)(r0 + 0) // BPF_LDX | BPF_B
r6 = *(u16 *)(r1 + 8) // BPF_LDX | BPF_H
r7 = *(u32 *)(r2 + 16) // BPF_LDX | BPF_W
r8 = *(u64 *)(r3 - 30) // BPF_LDX | BPF_DW
bpf: New disassembler testcases for 32-bit subregister support This patch test disassembler output for load/store instructions when -mattr=+alu32 specified for which we want to use "w" register format. Also, this patch extended the existing insn-unit.s and insn-unit-32.s to make sure disassemblers for all other instructions are not affected. Signed-off-by: Jiong Wang <jiong.wang@netronome.com> Reviewed-by: Yonghong Song <yhs@fb.com> llvm-svn: 325993
2018-02-24 07:49:35 +08:00
// CHECK-64: 71 05 00 00 00 00 00 00 r5 = *(u8 *)(r0 + 0)
// CHECK-64: 69 16 08 00 00 00 00 00 r6 = *(u16 *)(r1 + 8)
// CHECK-64: 61 27 10 00 00 00 00 00 r7 = *(u32 *)(r2 + 16)
// CHECK-32: 71 05 00 00 00 00 00 00 w5 = *(u8 *)(r0 + 0)
// CHECK-32: 69 16 08 00 00 00 00 00 w6 = *(u16 *)(r1 + 8)
// CHECK-32: 61 27 10 00 00 00 00 00 w7 = *(u32 *)(r2 + 16)
bpf: Add BPF AsmParser support in LLVM Reviewed-by: Yonghong Song <yhs@fb.com> Signed-off-by: Jiong Wang <jiong.wang@netronome.com> llvm-svn: 313055
2017-09-13 01:55:23 +08:00
// CHECK: 79 38 e2 ff 00 00 00 00 r8 = *(u64 *)(r3 - 30)
// ======== BPF_STX Class ========
*(u8 *)(r0 + 0) = r7 // BPF_STX | BPF_B
*(u16 *)(r1 + 8) = r8 // BPF_STX | BPF_H
*(u32 *)(r2 + 16) = r9 // BPF_STX | BPF_W
*(u64 *)(r3 - 30) = r10 // BPF_STX | BPF_DW
bpf: New disassembler testcases for 32-bit subregister support This patch test disassembler output for load/store instructions when -mattr=+alu32 specified for which we want to use "w" register format. Also, this patch extended the existing insn-unit.s and insn-unit-32.s to make sure disassemblers for all other instructions are not affected. Signed-off-by: Jiong Wang <jiong.wang@netronome.com> Reviewed-by: Yonghong Song <yhs@fb.com> llvm-svn: 325993
2018-02-24 07:49:35 +08:00
// CHECK-64: 73 70 00 00 00 00 00 00 *(u8 *)(r0 + 0) = r7
// CHECK-64: 6b 81 08 00 00 00 00 00 *(u16 *)(r1 + 8) = r8
// CHECK-64: 63 92 10 00 00 00 00 00 *(u32 *)(r2 + 16) = r9
// CHECK-32: 73 70 00 00 00 00 00 00 *(u8 *)(r0 + 0) = w7
// CHECK-32: 6b 81 08 00 00 00 00 00 *(u16 *)(r1 + 8) = w8
// CHECK-32: 63 92 10 00 00 00 00 00 *(u32 *)(r2 + 16) = w9
bpf: Add BPF AsmParser support in LLVM Reviewed-by: Yonghong Song <yhs@fb.com> Signed-off-by: Jiong Wang <jiong.wang@netronome.com> llvm-svn: 313055
2017-09-13 01:55:23 +08:00
// CHECK: 7b a3 e2 ff 00 00 00 00 *(u64 *)(r3 - 30) = r10
lock *(u32 *)(r2 + 16) += r9 // BPF_STX | BPF_W | BPF_XADD
lock *(u64 *)(r3 - 30) += r10 // BPF_STX | BPF_DW | BPF_XADD
bpf: disassembler support for XADD under sub-register mode Like the other load/store instructions, "w" register is preferred when disassembling BPF_STX | BPF_W | BPF_XADD. v1 -> v2: - Updated testcase insn-unit.s (Yonghong) Acked-by: Yonghong Song <yhs@fb.com> Signed-off-by: Jiong Wang <jiong.wang@netronome.com> llvm-svn: 355127
2019-03-01 03:22:34 +08:00
// CHECK-64: c3 92 10 00 00 00 00 00 lock *(u32 *)(r2 + 16) += r9
// CHECK-32: c3 92 10 00 00 00 00 00 lock *(u32 *)(r2 + 16) += w9
bpf: Add BPF AsmParser support in LLVM Reviewed-by: Yonghong Song <yhs@fb.com> Signed-off-by: Jiong Wang <jiong.wang@netronome.com> llvm-svn: 313055
2017-09-13 01:55:23 +08:00
// CHECK: db a3 e2 ff 00 00 00 00 lock *(u64 *)(r3 - 30) += r10
// ======== BPF_JMP Class ========
goto Llabel0 // BPF_JA
call 1 // BPF_CALL
exit // BPF_EXIT
bpf: print backward branch target properly Currently, it prints the backward branch offset as unsigned value like below: 7: 7d 34 0b 00 00 00 00 00 if r4 s>= r3 goto 11 <LBB0_3> 8: b7 00 00 00 00 00 00 00 r0 = 0 LBB0_2: 9: 07 00 00 00 01 00 00 00 r0 += 1 ...... 17: bf 31 00 00 00 00 00 00 r1 = r3 18: 6d 32 f6 ff 00 00 00 00 if r2 s> r3 goto 65526 <LBB0_3+0x7FFB0> The correct print insn 18 should be: 18: 6d 32 f6 ff 00 00 00 00 if r2 s> r3 goto -10 <LBB0_2> To provide better clarity and be consistent with kernel verifier output, the insn 7 output is changed to the following with "+" added to non-negative branch offset: 7: 7d 34 0b 00 00 00 00 00 if r4 s>= r3 goto +11 <LBB0_3> Signed-off-by: Yonghong Song <yhs@fb.com> Acked-by: Alexei Starovoitov <ast@kernel.org> llvm-svn: 318442
2017-11-17 03:15:36 +08:00
// CHECK: 05 00 1a 00 00 00 00 00 goto +26
bpf: Add BPF AsmParser support in LLVM Reviewed-by: Yonghong Song <yhs@fb.com> Signed-off-by: Jiong Wang <jiong.wang@netronome.com> llvm-svn: 313055
2017-09-13 01:55:23 +08:00
// CHECK: 85 00 00 00 01 00 00 00 call 1
// CHECK: 95 00 00 00 00 00 00 00 exit
if r0 == r1 goto Llabel0 // BPF_JEQ | BPF_X
if r3 != r4 goto Llabel0 // BPF_JNE | BPF_X
bpf: print backward branch target properly Currently, it prints the backward branch offset as unsigned value like below: 7: 7d 34 0b 00 00 00 00 00 if r4 s>= r3 goto 11 <LBB0_3> 8: b7 00 00 00 00 00 00 00 r0 = 0 LBB0_2: 9: 07 00 00 00 01 00 00 00 r0 += 1 ...... 17: bf 31 00 00 00 00 00 00 r1 = r3 18: 6d 32 f6 ff 00 00 00 00 if r2 s> r3 goto 65526 <LBB0_3+0x7FFB0> The correct print insn 18 should be: 18: 6d 32 f6 ff 00 00 00 00 if r2 s> r3 goto -10 <LBB0_2> To provide better clarity and be consistent with kernel verifier output, the insn 7 output is changed to the following with "+" added to non-negative branch offset: 7: 7d 34 0b 00 00 00 00 00 if r4 s>= r3 goto +11 <LBB0_3> Signed-off-by: Yonghong Song <yhs@fb.com> Acked-by: Alexei Starovoitov <ast@kernel.org> llvm-svn: 318442
2017-11-17 03:15:36 +08:00
// CHECK: 1d 10 17 00 00 00 00 00 if r0 == r1 goto +23
// CHECK: 5d 43 16 00 00 00 00 00 if r3 != r4 goto +22
bpf: Add BPF AsmParser support in LLVM Reviewed-by: Yonghong Song <yhs@fb.com> Signed-off-by: Jiong Wang <jiong.wang@netronome.com> llvm-svn: 313055
2017-09-13 01:55:23 +08:00
if r1 > r2 goto Llabel0 // BPF_JGT | BPF_X
if r2 >= r3 goto Llabel0 // BPF_JGE | BPF_X
if r4 s> r5 goto Llabel0 // BPF_JSGT | BPF_X
if r5 s>= r6 goto Llabel0 // BPF_JSGE | BPF_X
bpf: print backward branch target properly Currently, it prints the backward branch offset as unsigned value like below: 7: 7d 34 0b 00 00 00 00 00 if r4 s>= r3 goto 11 <LBB0_3> 8: b7 00 00 00 00 00 00 00 r0 = 0 LBB0_2: 9: 07 00 00 00 01 00 00 00 r0 += 1 ...... 17: bf 31 00 00 00 00 00 00 r1 = r3 18: 6d 32 f6 ff 00 00 00 00 if r2 s> r3 goto 65526 <LBB0_3+0x7FFB0> The correct print insn 18 should be: 18: 6d 32 f6 ff 00 00 00 00 if r2 s> r3 goto -10 <LBB0_2> To provide better clarity and be consistent with kernel verifier output, the insn 7 output is changed to the following with "+" added to non-negative branch offset: 7: 7d 34 0b 00 00 00 00 00 if r4 s>= r3 goto +11 <LBB0_3> Signed-off-by: Yonghong Song <yhs@fb.com> Acked-by: Alexei Starovoitov <ast@kernel.org> llvm-svn: 318442
2017-11-17 03:15:36 +08:00
// CHECK: 2d 21 15 00 00 00 00 00 if r1 > r2 goto +21
// CHECK: 3d 32 14 00 00 00 00 00 if r2 >= r3 goto +20
// CHECK: 6d 54 13 00 00 00 00 00 if r4 s> r5 goto +19
// CHECK: 7d 65 12 00 00 00 00 00 if r5 s>= r6 goto +18
bpf: Add BPF AsmParser support in LLVM Reviewed-by: Yonghong Song <yhs@fb.com> Signed-off-by: Jiong Wang <jiong.wang@netronome.com> llvm-svn: 313055
2017-09-13 01:55:23 +08:00
if r6 < r7 goto Llabel0 // BPF_JLT | BPF_X
if r7 <= r8 goto Llabel0 // BPF_JLE | BPF_X
if r8 s< r9 goto Llabel0 // BPF_JSLT | BPF_X
if r9 s<= r10 goto Llabel0 // BPF_JSLE | BPF_X
bpf: print backward branch target properly Currently, it prints the backward branch offset as unsigned value like below: 7: 7d 34 0b 00 00 00 00 00 if r4 s>= r3 goto 11 <LBB0_3> 8: b7 00 00 00 00 00 00 00 r0 = 0 LBB0_2: 9: 07 00 00 00 01 00 00 00 r0 += 1 ...... 17: bf 31 00 00 00 00 00 00 r1 = r3 18: 6d 32 f6 ff 00 00 00 00 if r2 s> r3 goto 65526 <LBB0_3+0x7FFB0> The correct print insn 18 should be: 18: 6d 32 f6 ff 00 00 00 00 if r2 s> r3 goto -10 <LBB0_2> To provide better clarity and be consistent with kernel verifier output, the insn 7 output is changed to the following with "+" added to non-negative branch offset: 7: 7d 34 0b 00 00 00 00 00 if r4 s>= r3 goto +11 <LBB0_3> Signed-off-by: Yonghong Song <yhs@fb.com> Acked-by: Alexei Starovoitov <ast@kernel.org> llvm-svn: 318442
2017-11-17 03:15:36 +08:00
// CHECK: ad 76 11 00 00 00 00 00 if r6 < r7 goto +17
// CHECK: bd 87 10 00 00 00 00 00 if r7 <= r8 goto +16
// CHECK: cd 98 0f 00 00 00 00 00 if r8 s< r9 goto +15
// CHECK: dd a9 0e 00 00 00 00 00 if r9 s<= r10 goto +14
bpf: Add BPF AsmParser support in LLVM Reviewed-by: Yonghong Song <yhs@fb.com> Signed-off-by: Jiong Wang <jiong.wang@netronome.com> llvm-svn: 313055
2017-09-13 01:55:23 +08:00
if r0 == 0 goto Llabel0 // BPF_JEQ | BPF_K
if r3 != -1 goto Llabel0 // BPF_JNE | BPF_K
bpf: print backward branch target properly Currently, it prints the backward branch offset as unsigned value like below: 7: 7d 34 0b 00 00 00 00 00 if r4 s>= r3 goto 11 <LBB0_3> 8: b7 00 00 00 00 00 00 00 r0 = 0 LBB0_2: 9: 07 00 00 00 01 00 00 00 r0 += 1 ...... 17: bf 31 00 00 00 00 00 00 r1 = r3 18: 6d 32 f6 ff 00 00 00 00 if r2 s> r3 goto 65526 <LBB0_3+0x7FFB0> The correct print insn 18 should be: 18: 6d 32 f6 ff 00 00 00 00 if r2 s> r3 goto -10 <LBB0_2> To provide better clarity and be consistent with kernel verifier output, the insn 7 output is changed to the following with "+" added to non-negative branch offset: 7: 7d 34 0b 00 00 00 00 00 if r4 s>= r3 goto +11 <LBB0_3> Signed-off-by: Yonghong Song <yhs@fb.com> Acked-by: Alexei Starovoitov <ast@kernel.org> llvm-svn: 318442
2017-11-17 03:15:36 +08:00
// CHECK: 15 00 0d 00 00 00 00 00 if r0 == 0 goto +13
// CHECK: 55 03 0c 00 ff ff ff ff if r3 != -1 goto +12
bpf: Add BPF AsmParser support in LLVM Reviewed-by: Yonghong Song <yhs@fb.com> Signed-off-by: Jiong Wang <jiong.wang@netronome.com> llvm-svn: 313055
2017-09-13 01:55:23 +08:00
if r1 > 64 goto Llabel0 // BPF_JGT | BPF_K
if r2 >= 0xffffffff goto Llabel0 // BPF_JGE | BPF_K
if r4 s> 0xffffffff goto Llabel0 // BPF_JSGT | BPF_K
if r5 s>= 0x7fffffff goto Llabel0 // BPF_JSGE | BPF_K
bpf: print backward branch target properly Currently, it prints the backward branch offset as unsigned value like below: 7: 7d 34 0b 00 00 00 00 00 if r4 s>= r3 goto 11 <LBB0_3> 8: b7 00 00 00 00 00 00 00 r0 = 0 LBB0_2: 9: 07 00 00 00 01 00 00 00 r0 += 1 ...... 17: bf 31 00 00 00 00 00 00 r1 = r3 18: 6d 32 f6 ff 00 00 00 00 if r2 s> r3 goto 65526 <LBB0_3+0x7FFB0> The correct print insn 18 should be: 18: 6d 32 f6 ff 00 00 00 00 if r2 s> r3 goto -10 <LBB0_2> To provide better clarity and be consistent with kernel verifier output, the insn 7 output is changed to the following with "+" added to non-negative branch offset: 7: 7d 34 0b 00 00 00 00 00 if r4 s>= r3 goto +11 <LBB0_3> Signed-off-by: Yonghong Song <yhs@fb.com> Acked-by: Alexei Starovoitov <ast@kernel.org> llvm-svn: 318442
2017-11-17 03:15:36 +08:00
// CHECK: 25 01 0b 00 40 00 00 00 if r1 > 64 goto +11
// CHECK: 35 02 0a 00 ff ff ff ff if r2 >= -1 goto +10
// CHECK: 65 04 09 00 ff ff ff ff if r4 s> -1 goto +9
// CHECK: 75 05 08 00 ff ff ff 7f if r5 s>= 2147483647 goto +8
bpf: Add BPF AsmParser support in LLVM Reviewed-by: Yonghong Song <yhs@fb.com> Signed-off-by: Jiong Wang <jiong.wang@netronome.com> llvm-svn: 313055
2017-09-13 01:55:23 +08:00
if r6 < 0xff goto Llabel0 // BPF_JLT | BPF_K
if r7 <= 0xffff goto Llabel0 // BPF_JLE | BPF_K
if r8 s< 0 goto Llabel0 // BPF_JSLT | BPF_K
if r9 s<= -1 goto Llabel0 // BPF_JSLE | BPF_K
bpf: print backward branch target properly Currently, it prints the backward branch offset as unsigned value like below: 7: 7d 34 0b 00 00 00 00 00 if r4 s>= r3 goto 11 <LBB0_3> 8: b7 00 00 00 00 00 00 00 r0 = 0 LBB0_2: 9: 07 00 00 00 01 00 00 00 r0 += 1 ...... 17: bf 31 00 00 00 00 00 00 r1 = r3 18: 6d 32 f6 ff 00 00 00 00 if r2 s> r3 goto 65526 <LBB0_3+0x7FFB0> The correct print insn 18 should be: 18: 6d 32 f6 ff 00 00 00 00 if r2 s> r3 goto -10 <LBB0_2> To provide better clarity and be consistent with kernel verifier output, the insn 7 output is changed to the following with "+" added to non-negative branch offset: 7: 7d 34 0b 00 00 00 00 00 if r4 s>= r3 goto +11 <LBB0_3> Signed-off-by: Yonghong Song <yhs@fb.com> Acked-by: Alexei Starovoitov <ast@kernel.org> llvm-svn: 318442
2017-11-17 03:15:36 +08:00
// CHECK: a5 06 07 00 ff 00 00 00 if r6 < 255 goto +7
// CHECK: b5 07 06 00 ff ff 00 00 if r7 <= 65535 goto +6
// CHECK: c5 08 05 00 00 00 00 00 if r8 s< 0 goto +5
// CHECK: d5 09 04 00 ff ff ff ff if r9 s<= -1 goto +4
bpf: Add BPF AsmParser support in LLVM Reviewed-by: Yonghong Song <yhs@fb.com> Signed-off-by: Jiong Wang <jiong.wang@netronome.com> llvm-svn: 313055
2017-09-13 01:55:23 +08:00
// ======== BPF_ALU64 Class ========
r0 += r1 // BPF_ADD | BPF_X
r1 -= r2 // BPF_SUB | BPF_X
r2 *= r3 // BPF_MUL | BPF_X
r3 /= r4 // BPF_DIV | BPF_X
// CHECK: 0f 10 00 00 00 00 00 00 r0 += r1
// CHECK: 1f 21 00 00 00 00 00 00 r1 -= r2
// CHECK: 2f 32 00 00 00 00 00 00 r2 *= r3
// CHECK: 3f 43 00 00 00 00 00 00 r3 /= r4
Llabel0 :
bpf: fix an insn encoding issue for neg insn Signed-off-by: Yonghong Song <yhs@fb.com> llvm-svn: 314911
2017-10-05 00:11:52 +08:00
r2 = -r2 // BPF_NEG
bpf: Add BPF AsmParser support in LLVM Reviewed-by: Yonghong Song <yhs@fb.com> Signed-off-by: Jiong Wang <jiong.wang@netronome.com> llvm-svn: 313055
2017-09-13 01:55:23 +08:00
r4 |= r5 // BPF_OR | BPF_X
r5 &= r6 // BPF_AND | BPF_X
r6 <<= r7 // BPF_LSH | BPF_X
r7 >>= r8 // BPF_RSH | BPF_X
r8 ^= r9 // BPF_XOR | BPF_X
r9 = r10 // BPF_MOV | BPF_X
r10 s>>= r0 // BPF_ARSH | BPF_X
[llvm-objdump] -d: print `00000000 <foo>:` instead of `00000000 foo:` The new behavior matches GNU objdump. A pair of angle brackets makes tests slightly easier. `.foo:` is not unique and thus cannot be used in a `CHECK-LABEL:` directive. Without `-LABEL`, the CHECK line can match the `Disassembly of section` line and causes the next `CHECK-NEXT:` to fail. ``` Disassembly of section .foo: 0000000000001634 .foo: ``` Bdragon: <> has metalinguistic connotation. it just "feels right" Reviewed By: rupprecht Differential Revision: https://reviews.llvm.org/D75713
2020-03-06 06:18:38 +08:00
// CHECK: <Llabel0>:
bpf: fix an insn encoding issue for neg insn Signed-off-by: Yonghong Song <yhs@fb.com> llvm-svn: 314911
2017-10-05 00:11:52 +08:00
// CHECK: 87 02 00 00 00 00 00 00 r2 = -r2
bpf: Add BPF AsmParser support in LLVM Reviewed-by: Yonghong Song <yhs@fb.com> Signed-off-by: Jiong Wang <jiong.wang@netronome.com> llvm-svn: 313055
2017-09-13 01:55:23 +08:00
// CHECK: 4f 54 00 00 00 00 00 00 r4 |= r5
// CHECK: 5f 65 00 00 00 00 00 00 r5 &= r6
// CHECK: 6f 76 00 00 00 00 00 00 r6 <<= r7
// CHECK: 7f 87 00 00 00 00 00 00 r7 >>= r8
// CHECK: af 98 00 00 00 00 00 00 r8 ^= r9
// CHECK: bf a9 00 00 00 00 00 00 r9 = r10
// CHECK: cf 0a 00 00 00 00 00 00 r10 s>>= r0
bpf: add new insns for bswap_to_le and negation This patch adds new insn, "reg = be16/be32/be64 reg", for bswap to little endian for big-endian target (bpfeb). It also adds new insn for negation "reg = -reg". Currently, for source code, e.g., b = -a LLVM still prefers to generate: b = 0 - a But "reg = -reg" format can be used in assembly code. Signed-off-by: Yonghong Song <yhs@fb.com> Acked-by: Alexei Starovoitov <ast@kernel.org> llvm-svn: 314376
2017-09-28 10:46:11 +08:00
r1 = be16 r1 // BPF_END | BPF_TO_BE
r2 = be32 r2 // BPF_END | BPF_TO_BE
r3 = be64 r3 // BPF_END | BPF_TO_BE
// CHECK: dc 01 00 00 10 00 00 00 r1 = be16 r1
// CHECK: dc 02 00 00 20 00 00 00 r2 = be32 r2
// CHECK: dc 03 00 00 40 00 00 00 r3 = be64 r3
bpf: Add BPF AsmParser support in LLVM Reviewed-by: Yonghong Song <yhs@fb.com> Signed-off-by: Jiong Wang <jiong.wang@netronome.com> llvm-svn: 313055
2017-09-13 01:55:23 +08:00
r0 += 1 // BPF_ADD | BPF_K
r1 -= 0x1 // BPF_SUB | BPF_K
r2 *= -4 // BPF_MUL | BPF_K
r3 /= 5 // BPF_DIV | BPF_K
// CHECK: 07 00 00 00 01 00 00 00 r0 += 1
// CHECK: 17 01 00 00 01 00 00 00 r1 -= 1
// CHECK: 27 02 00 00 fc ff ff ff r2 *= -4
// CHECK: 37 03 00 00 05 00 00 00 r3 /= 5
r4 |= 0xff // BPF_OR | BPF_K
r5 &= 0xFF // BPF_AND | BPF_K
r6 <<= 63 // BPF_LSH | BPF_K
r7 >>= 32 // BPF_RSH | BPF_K
r8 ^= 0 // BPF_XOR | BPF_K
r9 = 1 // BPF_MOV | BPF_K
r9 = 0xffffffff // BPF_MOV | BPF_K
r10 s>>= 64 // BPF_ARSH | BPF_K
// CHECK: 47 04 00 00 ff 00 00 00 r4 |= 255
// CHECK: 57 05 00 00 ff 00 00 00 r5 &= 255
// CHECK: 67 06 00 00 3f 00 00 00 r6 <<= 63
// CHECK: 77 07 00 00 20 00 00 00 r7 >>= 32
// CHECK: a7 08 00 00 00 00 00 00 r8 ^= 0
// CHECK: b7 09 00 00 01 00 00 00 r9 = 1
// CHECK: b7 09 00 00 ff ff ff ff r9 = -1
// CHECK: c7 0a 00 00 40 00 00 00 r10 s>>= 64