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[cfi-verify] Abort on unsupported targets
As suggested in the review for r337007, this makes cfi-verify abort on unsupported targets instead of producing incorrect results. It also updates the design document to reflect this. Differential Revision: https://reviews.llvm.org/D49304 llvm-svn: 337181
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llvm/test/tools/llvm-cfi-verify/Unsupported/arm-protected-lineinfo.s
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# RUN: llvm-mc %s -filetype obj -triple armv7a-- -o %t.o | ||
# RUN: not llvm-cfi-verify %t.o 2>&1 | FileCheck %s | ||
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# CHECK: Could not initialise disassembler: Unsupported architecture. | ||
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# Source (tiny.cc): | ||
# int a() { return 42; } | ||
# int b() { return 137; } | ||
# int main(int argc, char** argv) { | ||
# int(*ptr)(); | ||
# if (argc == 1) | ||
# ptr = &a; | ||
# else | ||
# ptr = &b; | ||
# return ptr(); | ||
# } | ||
.text | ||
.syntax unified | ||
.eabi_attribute 67, "2.09" | ||
.eabi_attribute 6, 2 | ||
.eabi_attribute 8, 1 | ||
.eabi_attribute 9, 1 | ||
.eabi_attribute 34, 1 | ||
.eabi_attribute 15, 1 | ||
.eabi_attribute 16, 1 | ||
.eabi_attribute 17, 2 | ||
.eabi_attribute 20, 1 | ||
.eabi_attribute 21, 1 | ||
.eabi_attribute 23, 3 | ||
.eabi_attribute 24, 1 | ||
.eabi_attribute 25, 1 | ||
.eabi_attribute 38, 1 | ||
.eabi_attribute 18, 4 | ||
.eabi_attribute 26, 2 | ||
.eabi_attribute 14, 0 | ||
.file "ld-temp.o" | ||
.p2align 2 | ||
.type _Z1av.cfi,%function | ||
.code 32 | ||
_Z1av.cfi: | ||
.Lfunc_begin0: | ||
.file 1 "tiny.cc" | ||
.loc 1 1 0 | ||
.fnstart | ||
.cfi_sections .debug_frame | ||
.cfi_startproc | ||
.loc 1 1 11 prologue_end | ||
mov r0, #42 | ||
bx lr | ||
.Ltmp0: | ||
.Lfunc_end0: | ||
.size _Z1av.cfi, .Lfunc_end0-_Z1av.cfi | ||
.cfi_endproc | ||
.cantunwind | ||
.fnend | ||
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.p2align 2 | ||
.type _Z1bv.cfi,%function | ||
.code 32 | ||
_Z1bv.cfi: | ||
.Lfunc_begin1: | ||
.loc 1 2 0 | ||
.fnstart | ||
.cfi_startproc | ||
.loc 1 2 11 prologue_end | ||
mov r0, #137 | ||
bx lr | ||
.Ltmp1: | ||
.Lfunc_end1: | ||
.size _Z1bv.cfi, .Lfunc_end1-_Z1bv.cfi | ||
.cfi_endproc | ||
.cantunwind | ||
.fnend | ||
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.p2align 2 | ||
.type main,%function | ||
.code 32 | ||
main: | ||
.Lfunc_begin2: | ||
.loc 1 3 0 | ||
.fnstart | ||
.cfi_startproc | ||
.save {r11, lr} | ||
push {r11, lr} | ||
.cfi_def_cfa_offset 8 | ||
.cfi_offset lr, -4 | ||
.cfi_offset r11, -8 | ||
.setfp r11, sp | ||
mov r11, sp | ||
.cfi_def_cfa_register r11 | ||
.pad #16 | ||
sub sp, sp, #16 | ||
mov r2, #0 | ||
str r2, [r11, #-4] | ||
str r0, [sp, #8] | ||
str r1, [sp, #4] | ||
.Ltmp2: | ||
.loc 1 5 7 prologue_end | ||
ldr r0, [sp, #8] | ||
cmp r0, #1 | ||
bne .LBB2_2 | ||
b .LBB2_1 | ||
.LBB2_1: | ||
.loc 1 6 9 | ||
ldr r0, .LCPI2_0 | ||
.LPC2_0: | ||
add r0, pc, r0 | ||
str r0, [sp] | ||
.loc 1 6 5 is_stmt 0 | ||
b .LBB2_3 | ||
.LBB2_2: | ||
.loc 1 8 9 is_stmt 1 | ||
ldr r0, .LCPI2_1 | ||
.LPC2_1: | ||
add r0, pc, r0 | ||
str r0, [sp] | ||
b .LBB2_3 | ||
.LBB2_3: | ||
.loc 1 9 10 | ||
ldr r1, [sp] | ||
ldr r0, .LCPI2_2 | ||
.LPC2_2: | ||
add r0, pc, r0 | ||
sub r0, r1, r0 | ||
ror r0, r0, #2 | ||
cmp r0, #2 | ||
blo .LBB2_5 | ||
b .LBB2_4 | ||
.LBB2_4: | ||
.inst 0xe7ffdefe | ||
.LBB2_5: | ||
mov lr, pc | ||
bx r1 | ||
.loc 1 9 3 is_stmt 0 | ||
mov sp, r11 | ||
pop {r11, lr} | ||
bx lr | ||
.Ltmp3: | ||
.p2align 2 | ||
.loc 1 0 3 | ||
.LCPI2_0: | ||
.long _Z1av-(.LPC2_0+8) | ||
.LCPI2_1: | ||
.long _Z1bv-(.LPC2_1+8) | ||
.LCPI2_2: | ||
.long .L.cfi.jumptable-(.LPC2_2+8) | ||
.Lfunc_end2: | ||
.size main, .Lfunc_end2-main | ||
.cfi_endproc | ||
.fnend | ||
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.p2align 2 | ||
.type .L.cfi.jumptable,%function | ||
.code 32 | ||
.L.cfi.jumptable: | ||
.Lfunc_begin3: | ||
.fnstart | ||
.cfi_startproc | ||
@APP | ||
b _Z1av.cfi | ||
b _Z1bv.cfi | ||
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@NO_APP | ||
.Lfunc_end3: | ||
.size .L.cfi.jumptable, .Lfunc_end3-.L.cfi.jumptable | ||
.cfi_endproc | ||
.cantunwind | ||
.fnend | ||
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.type .L__unnamed_1,%object | ||
.section .rodata,"a",%progbits | ||
.L__unnamed_1: | ||
.size .L__unnamed_1, 0 | ||
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.section .debug_str,"MS",%progbits,1 | ||
.Linfo_string0: | ||
.asciz "clang version 7.0.0 (trunk 336681) (llvm/trunk 336683)" | ||
.Linfo_string1: | ||
.asciz "tiny.cc" | ||
.Linfo_string2: | ||
.asciz "" | ||
.section .debug_abbrev,"",%progbits | ||
.byte 1 | ||
.byte 17 | ||
.byte 0 | ||
.byte 37 | ||
.byte 14 | ||
.byte 19 | ||
.byte 5 | ||
.byte 3 | ||
.byte 14 | ||
.byte 16 | ||
.byte 23 | ||
.byte 27 | ||
.byte 14 | ||
.byte 17 | ||
.byte 1 | ||
.byte 18 | ||
.byte 6 | ||
.byte 0 | ||
.byte 0 | ||
.byte 0 | ||
.section .debug_info,"",%progbits | ||
.Lcu_begin0: | ||
.long 34 | ||
.short 4 | ||
.long .debug_abbrev | ||
.byte 4 | ||
.byte 1 | ||
.long .Linfo_string0 | ||
.short 4 | ||
.long .Linfo_string1 | ||
.long .Lline_table_start0 | ||
.long .Linfo_string2 | ||
.long .Lfunc_begin0 | ||
.long .Lfunc_end2-.Lfunc_begin0 | ||
.section .debug_ranges,"",%progbits | ||
.section .debug_macinfo,"",%progbits | ||
.byte 0 | ||
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.globl __typeid__ZTSFivE_global_addr | ||
.hidden __typeid__ZTSFivE_global_addr | ||
.set __typeid__ZTSFivE_global_addr, .L.cfi.jumptable | ||
.size __typeid__ZTSFivE_global_addr, 1 | ||
.type _Z1av,%function | ||
.set _Z1av, .L.cfi.jumptable | ||
.type _Z1bv,%function | ||
.set _Z1bv, .L.cfi.jumptable+4 | ||
.ident "clang version 7.0.0 (trunk 336681) (llvm/trunk 336683)" | ||
.section ".note.GNU-stack","",%progbits | ||
.section .debug_line,"",%progbits | ||
.Lline_table_start0: |
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@@ -0,0 +1,2 @@ | ||
if not 'ARM' in config.root.targets: | ||
config.unsupported = True |
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