derek.holloway
7502bf64a4
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58 lines
1.8 KiB
ArmAsm
58 lines
1.8 KiB
ArmAsm
/// Test the Arm state R_ARM_CALL and R_ARM_JUMP24 relocation to Arm state destinations.
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/// R_ARM_CALL is used for branch and link (BL)
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/// R_ARM_JUMP24 is used for unconditional and conditional branches (B and B<cc>)
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/// Relocations defined in https://github.com/ARM-software/abi-aa/blob/main/aaelf32/aaelf32.rst
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/// Addend A is always -8 to cancel out Arm state PC-bias of 8 bytes
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// REQUIRES: arm
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// RUN: llvm-mc -filetype=obj -triple=armv7a-none-linux-gnueabi %s -o %t
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// RUN: echo "SECTIONS { \
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// RUN: . = 0xb4; \
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// RUN: .callee1 : { *(.callee_low) } \
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// RUN: .caller : { *(.text) } \
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// RUN: .callee2 : { *(.callee_high) } } " > %t.script
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// RUN: ld.lld --defsym=far=0x201001c --script %t.script %t -o %t2
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// RUN: llvm-objdump -d --no-show-raw-insn --triple=armv7a-none-linux-gnueabi %t2 | FileCheck %s
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.syntax unified
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.section .callee_low, "ax",%progbits
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.align 2
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.type callee_low,%function
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callee_low:
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bx lr
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.section .text, "ax",%progbits
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.globl _start
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.balign 0x10000
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.type _start,%function
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_start:
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bl callee_low
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b callee_low
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beq callee_low
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bl callee_high
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b callee_high
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bne callee_high
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bl far
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b far
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bgt far
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bx lr
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.section .callee_high, "ax",%progbits
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.align 2
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.type callee_high,%function
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callee_high:
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bx lr
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// CHECK: 00010000 <_start>:
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// CHECK-NEXT: 10000: bl 0xb4 <callee_low>
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// CHECK-NEXT: 10004: b 0xb4 <callee_low>
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// CHECK-NEXT: 10008: beq 0xb4 <callee_low>
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// CHECK-NEXT: 1000c: bl 0x10028 <callee_high>
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// CHECK-NEXT: 10010: b 0x10028 <callee_high>
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// CHECK-NEXT: 10014: bne 0x10028 <callee_high>
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/// 0x201001c = far
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// CHECK-NEXT: 10018: bl 0x201001c
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// CHECK-NEXT: 1001c: b 0x201001c
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// CHECK-NEXT: 10020: bgt 0x201001c
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// CHECK-NEXT: 10024: bx lr
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