| // REQUIRES: x86 |
| // RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o %t.o |
| // RUN: echo "SECTIONS { . = SIZEOF_HEADERS; .text : { *(.text) } }" > %t.script |
| // RUN: ld.lld -T %t.script %t.o -o %t |
| // RUN: llvm-readobj --symbols %t | FileCheck %s |
| |
| // Test that _start is in the correct section. |
| // CHECK: Name: _start |
| // CHECK-NEXT: Value: |
| // CHECK-NEXT: Size: 0 |
| // CHECK-NEXT: Binding: Global |
| // CHECK-NEXT: Type: None |
| // CHECK-NEXT: Other: 0 |
| // CHECK-NEXT: Section: dn |
| |
| // Show that --gc-sections works when there are many sections, and that |
| // referenced common and absolute symbols in such cases are not removed, nor are |
| // they incorrectly attributed to the sections with index 0xFFF1 or 0xFFF2. |
| // RUN: ld.lld %t.o -T %t.script -o %t --gc-sections |
| // RUN: llvm-readobj --symbols --sections %t | FileCheck %s --check-prefix=GC |
| |
| // GC: Sections [ |
| // GC-NEXT: Section { |
| // GC-NEXT: Index: 0 |
| // GC-NEXT: Name: (0) |
| // GC: Section { |
| // GC-NEXT: Index: 1 |
| // GC-NEXT: Name: dn |
| // GC: Section { |
| // GC-NEXT: Index: 2 |
| // GC-NEXT: Name: .bss |
| // GC: Section { |
| // GC-NEXT: Index: 3 |
| // GC-NEXT: Name: .comment |
| // GC: Section { |
| // GC-NEXT: Index: 4 |
| // GC-NEXT: Name: .symtab |
| // GC: Section { |
| // GC-NEXT: Index: 5 |
| // GC-NEXT: Name: .shstrtab |
| // GC: Section { |
| // GC-NEXT: Index: 6 |
| // GC-NEXT: Name: .strtab |
| // GC-NOT: Section { |
| |
| // GC: Symbols [ |
| // GC-NEXT: Symbol { |
| // GC-NEXT: Name: (0) |
| // GC: Symbol { |
| // GC-NEXT: Name: sdn |
| // GC: Symbol { |
| // GC-NEXT: Name: _start |
| // GC: Symbol { |
| // GC-NEXT: Name: abs |
| // GC: Symbol { |
| // GC-NEXT: Name: common |
| // GC-NOT: Symbol { |
| |
| .macro gen_sections4 x |
| .section a\x,"a" |
| .global sa\x |
| sa\x: |
| .section b\x,"a" |
| .global sa\x |
| sb\x: |
| .section c\x,"a" |
| .global sa\x |
| sc\x: |
| .section d\x,"a" |
| .global sa\x |
| sd\x: |
| .endm |
| |
| .macro gen_sections8 x |
| gen_sections4 a\x |
| gen_sections4 b\x |
| .endm |
| |
| .macro gen_sections16 x |
| gen_sections8 a\x |
| gen_sections8 b\x |
| .endm |
| |
| .macro gen_sections32 x |
| gen_sections16 a\x |
| gen_sections16 b\x |
| .endm |
| |
| .macro gen_sections64 x |
| gen_sections32 a\x |
| gen_sections32 b\x |
| .endm |
| |
| .macro gen_sections128 x |
| gen_sections64 a\x |
| gen_sections64 b\x |
| .endm |
| |
| .macro gen_sections256 x |
| gen_sections128 a\x |
| gen_sections128 b\x |
| .endm |
| |
| .macro gen_sections512 x |
| gen_sections256 a\x |
| gen_sections256 b\x |
| .endm |
| |
| .macro gen_sections1024 x |
| gen_sections512 a\x |
| gen_sections512 b\x |
| .endm |
| |
| .macro gen_sections2048 x |
| gen_sections1024 a\x |
| gen_sections1024 b\x |
| .endm |
| |
| .macro gen_sections4096 x |
| gen_sections2048 a\x |
| gen_sections2048 b\x |
| .endm |
| |
| .macro gen_sections8192 x |
| gen_sections4096 a\x |
| gen_sections4096 b\x |
| .endm |
| |
| .macro gen_sections16384 x |
| gen_sections8192 a\x |
| gen_sections8192 b\x |
| .endm |
| |
| .macro gen_sections32768 x |
| gen_sections16384 a\x |
| gen_sections16384 b\x |
| .endm |
| |
| gen_sections32768 a |
| gen_sections16384 b |
| gen_sections8192 c |
| gen_sections4096 d |
| gen_sections2048 e |
| gen_sections1024 f |
| gen_sections512 g |
| gen_sections256 h |
| gen_sections128 i |
| gen_sections64 j |
| gen_sections32 k |
| gen_sections16 l |
| gen_sections8 m |
| gen_sections4 n |
| |
| .global abs |
| abs = 0x12345678 |
| |
| .comm common,4,4 |
| |
| .global _start |
| _start: |
| .quad abs |
| .quad common |