| // REQUIRES: arm |
| // RUN: llvm-mc -arm-add-build-attributes -filetype=obj -triple=armv7a-none-linux-gnueabi %s -o %t |
| // RUN: llvm-mc -arm-add-build-attributes -filetype=obj -triple=armv7a-none-linux-gnueabi %S/Inputs/far-arm-thumb-abs.s -o %tfar |
| // RUN: echo "SECTIONS { \ |
| // RUN: . = 0xb4; \ |
| // RUN: .callee1 : { *(.callee_low) } \ |
| // RUN: .callee2 : { *(.callee_arm_low) } \ |
| // RUN: .caller : { *(.text) } \ |
| // RUN: .callee3 : { *(.callee_high) } \ |
| // RUN: .callee4 : { *(.callee_arm_high) } } " > %t.script |
| // RUN: ld.lld --script %t.script %t %tfar -o %t2 |
| // RUN: llvm-objdump -d --triple=armv7a-none-linux-gnueabi %t2 | FileCheck %s |
| |
| /// Test BLX instruction is chosen for ARM BL/BLX instruction and Thumb callee |
| /// Using two callees to ensure at least one has 2-byte alignment. |
| .syntax unified |
| .thumb |
| .section .callee_low, "ax",%progbits |
| .align 2 |
| .type callee_low,%function |
| callee_low: |
| bx lr |
| .type callee_low2, %function |
| callee_low2: |
| bx lr |
| |
| .section .callee_arm_low, "ax",%progbits |
| .arm |
| .balign 0x100 |
| .type callee_arm_low,%function |
| .align 2 |
| callee_arm_low: |
| bx lr |
| |
| .section .text, "ax",%progbits |
| .arm |
| .globl _start |
| .balign 0x10000 |
| .type _start,%function |
| _start: |
| bl callee_low |
| blx callee_low |
| bl callee_low2 |
| blx callee_low2 |
| bl callee_high |
| blx callee_high |
| bl callee_high2 |
| blx callee_high2 |
| bl blx_far |
| blx blx_far2 |
| /// blx to ARM instruction should be written as a BL |
| bl callee_arm_low |
| blx callee_arm_low |
| bl callee_arm_high |
| blx callee_arm_high |
| bx lr |
| |
| .section .callee_high, "ax",%progbits |
| .balign 0x100 |
| .thumb |
| .type callee_high,%function |
| callee_high: |
| bx lr |
| .type callee_high2,%function |
| callee_high2: |
| bx lr |
| |
| .section .callee_arm_high, "ax",%progbits |
| .arm |
| .balign 0x100 |
| .type callee_arm_high,%function |
| callee_arm_high: |
| bx lr |
| |
| // CHECK: Disassembly of section .callee1: |
| // CHECK-EMPTY: |
| // CHECK-NEXT: <callee_low>: |
| // CHECK-NEXT: b4: 4770 bx lr |
| // CHECK: <callee_low2>: |
| // CHECK-NEXT: b6: 4770 bx lr |
| |
| // CHECK: Disassembly of section .callee2: |
| // CHECK-EMPTY: |
| // CHECK-NEXT: <callee_arm_low>: |
| // CHECK-NEXT: 100: e12fff1e bx lr |
| |
| // CHECK: Disassembly of section .caller: |
| // CHECK-EMPTY: |
| // CHECK-NEXT: <_start>: |
| // CHECK-NEXT: 10000: faffc02b blx 0xb4 <callee_low> |
| // CHECK-NEXT: 10004: faffc02a blx 0xb4 <callee_low> |
| // CHECK-NEXT: 10008: fbffc029 blx 0xb6 <callee_low2> |
| // CHECK-NEXT: 1000c: fbffc028 blx 0xb6 <callee_low2> |
| // CHECK-NEXT: 10010: fa00003a blx 0x10100 <callee_high> |
| // CHECK-NEXT: 10014: fa000039 blx 0x10100 <callee_high> |
| // CHECK-NEXT: 10018: fb000038 blx 0x10102 <callee_high2> |
| // CHECK-NEXT: 1001c: fb000037 blx 0x10102 <callee_high2> |
| /// 0x2010024 = blx_far |
| // CHECK-NEXT: 10020: fa7fffff blx 0x2010024 |
| /// 0x2010028 = blx_far2 |
| // CHECK-NEXT: 10024: fa7fffff blx 0x2010028 |
| // CHECK-NEXT: 10028: ebffc034 bl 0x100 <callee_arm_low> |
| // CHECK-NEXT: 1002c: ebffc033 bl 0x100 <callee_arm_low> |
| // CHECK-NEXT: 10030: eb000072 bl 0x10200 <callee_arm_high> |
| // CHECK-NEXT: 10034: eb000071 bl 0x10200 <callee_arm_high> |
| // CHECK-NEXT: 10038: e12fff1e bx lr |
| |
| // CHECK: Disassembly of section .callee3: |
| // CHECK-EMPTY: |
| // CHECK: <callee_high>: |
| // CHECK-NEXT: 10100: 4770 bx lr |
| // CHECK: <callee_high2>: |
| // CHECK-NEXT: 10102: 4770 bx lr |
| |
| // CHECK: Disassembly of section .callee4: |
| // CHECK-EMPTY: |
| // CHECK-NEXT: <callee_arm_high>: |
| // CHECK-NEXT: 10200: e12fff1e bx lr |
