| // RUN: llvm-mc -filetype=obj -triple=armv7a-none-linux-gnueabi %s -o %t |
| // RUN: llvm-mc -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 2>&1 |
| // RUN: llvm-objdump -d -triple=armv7a-none-linux-gnueabi %t2 | FileCheck -check-prefix=CHECK-ARM %s |
| // RUN: llvm-objdump -d -triple=thumbv7a-none-linux-gnueabi %t2 | FileCheck -check-prefix=CHECK-THUMB %s |
| // REQUIRES: arm |
| |
| // 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-THUMB: Disassembly of section .callee1: |
| // CHECK-THUMB-NEXT: callee_low: |
| // CHECK-THUMB-NEXT: b4: 70 47 bx lr |
| // CHECK-THUMB: callee_low2: |
| // CHECK-THUMB-NEXT: b6: 70 47 bx lr |
| |
| // CHECK-ARM: Disassembly of section .callee2: |
| // CHECK-ARM-NEXT: callee_arm_low: |
| // CHECK-ARM-NEXT: 100: 1e ff 2f e1 bx lr |
| |
| // CHECK-ARM: Disassembly of section .caller: |
| // CHECK-ARM-NEXT: _start: |
| // CHECK-ARM-NEXT: 10000: 2b c0 ff fa blx #-65364 <callee_low> |
| // CHECK-ARM-NEXT: 10004: 2a c0 ff fa blx #-65368 <callee_low> |
| // CHECK-ARM-NEXT: 10008: 29 c0 ff fb blx #-65370 <callee_low2> |
| // CHECK-ARM-NEXT: 1000c: 28 c0 ff fb blx #-65374 <callee_low2> |
| // CHECK-ARM-NEXT: 10010: 3a 00 00 fa blx #232 <callee_high> |
| // CHECK-ARM-NEXT: 10014: 39 00 00 fa blx #228 <callee_high> |
| // CHECK-ARM-NEXT: 10018: 38 00 00 fb blx #226 <callee_high2> |
| // CHECK-ARM-NEXT: 1001c: 37 00 00 fb blx #222 <callee_high2> |
| // 10020 + 1FFFFFC + 8 = 0x2010024 = blx_far |
| // CHECK-ARM-NEXT: 10020: ff ff 7f fa blx #33554428 |
| // 10024 + 1FFFFFC + 8 = 0x2010028 = blx_far2 |
| // CHECK-ARM-NEXT: 10024: ff ff 7f fa blx #33554428 |
| // CHECK-ARM-NEXT: 10028: 34 c0 ff eb bl #-65328 <callee_arm_low> |
| // CHECK-ARM-NEXT: 1002c: 33 c0 ff eb bl #-65332 <callee_arm_low> |
| // CHECK-ARM-NEXT: 10030: 72 00 00 eb bl #456 <callee_arm_high> |
| // CHECK-ARM-NEXT: 10034: 71 00 00 eb bl #452 <callee_arm_high> |
| // CHECK-ARM-NEXT: 10038: 1e ff 2f e1 bx lr |
| |
| // CHECK-THUMB: Disassembly of section .callee3: |
| // CHECK-THUMB: callee_high: |
| // CHECK-THUMB-NEXT: 10100: 70 47 bx lr |
| // CHECK-THUMB: callee_high2: |
| // CHECK-THUMB-NEXT: 10102: 70 47 bx lr |
| |
| // CHECK-ARM: Disassembly of section .callee4: |
| // CHECK-NEXT-ARM: callee_arm_high: |
| // CHECK-NEXT-ARM: 10200: 1e ff 2f e1 bx lr |
