1 @ RUN: llvm-mc %s -triple=armv7-unknown-linux-gnueabi -filetype=obj -o - \ 2 @ RUN: | llvm-readobj -s -sd -sr | FileCheck %s 3 4 @ Check the .fnstart directive and the .fnend directive. 5 6 @ The .fnstart directive and .fnend directive should create an entry in 7 @ exception handling table. For example, if the function is defined in .text 8 @ section, then there should be an entry in .ARM.exidx section. 9 10 .syntax unified 11 12 .text 13 .globl func1 14 .align 2 15 .type func1,%function 16 .fnstart 17 func1: 18 bx lr 19 .fnend 20 21 22 23 @------------------------------------------------------------------------------- 24 @ Check the .text section. 25 @------------------------------------------------------------------------------- 26 @ CHECK: Sections [ 27 @ CHECK: Section { 28 29 @------------------------------------------------------------------------------- 30 @ Check the index of .text section. This will be used in .ARM.exidx. 31 @------------------------------------------------------------------------------- 32 @ CHECK: Index: 1 33 @ CHECK: Name: .text 34 @ CHECK: Type: SHT_PROGBITS (0x1) 35 @ CHECK: Flags [ (0x6) 36 @ CHECK: SHF_ALLOC (0x2) 37 @ CHECK: SHF_EXECINSTR (0x4) 38 @ CHECK: ] 39 @ CHECK: SectionData ( 40 @ CHECK: 0000: 1EFF2FE1 |../.| 41 @ CHECK: ) 42 @ CHECK: } 43 44 45 @------------------------------------------------------------------------------- 46 @ Check the name of the EXIDX section. For the function in the .text section, 47 @ this should be .ARM.exidx. It is incorrect to see .ARM.exidx.text here. 48 @------------------------------------------------------------------------------- 49 @ CHECK: Section { 50 @ CHECK: Name: .ARM.exidx 51 @ CHECK: Type: SHT_ARM_EXIDX (0x70000001) 52 @ CHECK: Flags [ (0x82) 53 @ CHECK: SHF_ALLOC (0x2) 54 @ CHECK: SHF_LINK_ORDER (0x80) 55 @ CHECK: ] 56 57 @------------------------------------------------------------------------------- 58 @ Check the linked section of the EXIDX section. This should be the index 59 @ of the .text section. 60 @------------------------------------------------------------------------------- 61 @ CHECK: Link: 1 62 63 @------------------------------------------------------------------------------- 64 @ The first word should be the offset to .text. The second word should be 65 @ 0xB0B0B080, which means compact model 0 is used (0x80) and the rest of the 66 @ word is filled with FINISH opcode (0xB0). 67 @------------------------------------------------------------------------------- 68 @ CHECK: SectionData ( 69 @ CHECK: 0000: 00000000 B0B0B080 |........| 70 @ CHECK: ) 71 @ CHECK: } 72 @ CHECK: ] 73 74 @------------------------------------------------------------------------------- 75 @ The first word should be relocated to the code address in .text section. 76 @ Besides, since this function is using compact model 0, thus we have to 77 @ add an relocation to __aeabi_unwind_cpp_pr0. 78 @------------------------------------------------------------------------------- 79 @ CHECK: Relocations [ 80 @ CHECK: 0x0 R_ARM_PREL31 .text 0x0 81 @ CHECK: 0x0 R_ARM_NONE __aeabi_unwind_cpp_pr0 0x0 82 @ CHECK: ] 83