// Check that we are able to rewrite binaries when we fail to identify a // suitable location to put new code and user supplies a custom one via // --custom-allocation-vma. This happens more obviously if the binary has // segments mapped to very high addresses. // In this example, my.reserved.section is mapped to a segment to be loaded // at address 0x10000000000, while regular text should be at 0x200000. We // pick a vma in the middle at 0x700000 to carve space for BOLT to put data, // since BOLT's usual route of allocating after the last segment will put // code far away and that will blow up relocations from main. // RUN: split-file %s %t // RUN: llvm-mc -filetype=obj -triple x86_64-unknown-unknown %t/main.s -o %t.o // RUN: %clang %cflags -no-pie %t.o -o %t.exe -Wl,-T %t/main.ls // RUN: llvm-bolt %t.exe -o %t.bolt --custom-allocation-vma=0x700000 //--- main.s .type reserved_space,@object .section .my.reserved.section,"awx",@nobits .globl reserved_space .p2align 4, 0x0 reserved_space: .zero 0x80000000 .size reserved_space, 0x80000000 .text .globl main .globl _start .type main, %function _start: main: .cfi_startproc nop nop nop retq .cfi_endproc .size main, .-main //--- main.ls SECTIONS { .my.reserved.section 1<<40 : { *(.my.reserved.section); } } INSERT BEFORE .comment;