393 lines
7.2 KiB
ArmAsm
393 lines
7.2 KiB
ArmAsm
/* Copyright 2010-2016 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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.syntax unified
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.text
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.type main,%function
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#if defined (__thumb__)
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.code 16
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.thumb_func
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#endif
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.globl main
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main:
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push {r7, lr}
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add sp, sp, #4
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mov r7, sp
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/* Test call and return */
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.global test_call
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test_call:
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bl test_call_subr
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.global test_ret_end
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test_ret_end:
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nop @ Location test_ret_end
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/* Test branch */
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bl test_branch
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/* Test ldr from pc */
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bl test_ldr_pc
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/* Test ldm/stm only in ARM mode */
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#if !defined (__thumb__)
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bl test_ldm_stm_pc
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#endif
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/* Test ldrX literal in ARM and Thumb-2 */
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#if !defined (__thumb__) || defined(__thumb2__)
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bl test_ldr_literal
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#endif
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/* Test ldr literal in Thumb */
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#if defined(__thumb__)
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bl test_ldr_literal_16
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#endif
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/* Test cbnz/cbz in Thumb-2 */
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#if defined(__thumb2__)
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bl test_cbz_cbnz
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#endif
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/* Test adr in Thumb and Thumb-2 */
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#if defined(__thumb__)
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bl test_adr
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#endif
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/* Test 32-bit adr in ARM and Thumb-2 */
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#if defined(__thumb2__) || !defined(__thumb__)
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bl test_adr_32bit
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#endif
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bl test_pop_pc
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/* Test str in ARM mode and Thumb-2 */
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#if !defined(__thumb__)
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bl test_str_pc
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#endif
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/* Test add with pc in Thumb and Thumb-2 */
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#if defined(__thumb__)
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bl test_add_rn_pc
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#endif
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/* Return */
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mov sp, r7
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sub sp, sp, #4
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movs r0, #0
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pop {r7, pc}
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.size main, .-main
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.global test_call_subr
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#if defined (__thumb__)
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.code 16
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.thumb_func
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#endif
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.type test_call_subr, %function
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test_call_subr:
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nop
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.global test_call_end
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test_call_end:
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nop @ Location test_call_end
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.global test_ret
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test_ret:
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bx lr
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.size test_call_subr, .-test_call_subr
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.global test_branch
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#if defined (__thumb__)
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.code 16
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.thumb_func
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#endif
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.type test_branch, %function
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test_branch:
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b L_branch
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.global L_branch
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L_branch:
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bx lr
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.size test_branch, .-test_branch
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.global test_ldr_pc
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#if defined (__thumb__)
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.code 16
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.thumb_func
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#endif
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.type test_ldr_pc, %function
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test_ldr_pc:
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ldr r1, [pc, #0]
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.global test_ldr_pc_ret
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test_ldr_pc_ret:
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bx lr
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.size test_ldr_pc, .-test_ldr_pc
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#if !defined (__thumb__)
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.global test_ldm_stm_pc
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.type test_ldm_stm_pc, %function
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test_ldm_stm_pc:
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stmdb sp!, {lr, pc}
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ldmia sp!, {r0, r1}
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ldr r0, .L1
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stmdb sp!, {r0}
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.global test_ldm_pc
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test_ldm_pc:
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ldmia sp!, {pc}
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.global test_ldm_stm_pc_ret
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test_ldm_stm_pc_ret:
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bx lr
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.align 2
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.L1:
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.word test_ldm_stm_pc_ret
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.size test_ldm_stm_pc, .-test_ldm_stm_pc
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#endif
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#if !defined (__thumb__) || defined(__thumb2__)
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.global test_ldr_literal
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.type test_ldr_literal, %function
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test_ldr_literal:
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ldrh r0, [pc]
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.global test_ldrsb_literal
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test_ldrsb_literal:
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ldrsb r0, [pc]
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.global test_ldrsh_literal
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test_ldrsh_literal:
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ldrsh r0, [pc]
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.global test_ldr_literal_end
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test_ldr_literal_end:
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bx lr
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.size test_ldr_literal, .-test_ldr_literal
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#endif
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#if defined(__thumb__)
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.global test_ldr_literal_16
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.code 16
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.thumb_func
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test_ldr_literal_16:
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ldr r0, .L2
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.global test_ldr_literal_16_end
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test_ldr_literal_16_end:
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bx lr
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.align 2
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.L2:
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.word test_ldr_literal_16
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.size test_ldr_literal_16, .-test_ldr_literal_16
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#endif
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#if defined(__thumb2__)
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.global test_cbz_cbnz
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.code 16
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.thumb_func
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test_cbz_cbnz:
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movs r0, #0
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.global test_zero_cbnz
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test_zero_cbnz:
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cbnz r0, .L3
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.global test_zero_cbz
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test_zero_cbz:
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cbz r0, .L3
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.L3:
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movs r0, #1
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.global test_non_zero_cbz
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test_non_zero_cbz:
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cbz r0, .L4
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.global test_non_zero_cbnz
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test_non_zero_cbnz:
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cbnz r0, .L4
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nop
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.L4:
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.global test_cbz_cbnz_end
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test_cbz_cbnz_end:
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bx lr
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.size test_cbz_cbnz, .-test_cbz_cbnz
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#endif
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#if defined(__thumb__)
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.global test_adr
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.code 16
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.thumb_func
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test_adr:
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adr r0, .L8
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nop
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nop
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nop
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.L8:
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.global test_adr_end
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test_adr_end:
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bx lr
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.size test_adr, .-test_adr
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#endif
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#if defined(__thumb2__) || !defined(__thumb__)
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.global test_adr_32bit
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#if defined(__thumb2__)
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.code 16
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.thumb_func
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#endif
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test_adr_32bit:
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adr r0, .L6
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nop
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.L6:
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nop
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.global test_adr_32bit_after
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test_adr_32bit_after:
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adr r0, .L6
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.global test_adr_32bit_end
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test_adr_32bit_end:
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bx lr
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.size test_adr_32bit, .-test_adr_32bit
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#endif
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.global test_pop_pc
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.type test_pop_pc, %function
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#if defined(__thumb__)
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.code 16
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.thumb_func
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#endif
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test_pop_pc:
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ldr r1, .L1_right
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ldr r2, .L1_wrong
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#if defined(__thumb__)
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movs r0, #1
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orrs r1, r0
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orrs r2, r0
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#endif
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push {r1}
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push {r2}
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.global test_pop_pc_1
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test_pop_pc_1:
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pop {r1, pc}
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test_pop_pc_2_start:
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ldr r1, .L2_right
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#if defined(__thumb__)
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movs r0, #1
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orrs r1, r0
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#endif
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push {r1}
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.global test_pop_pc_2
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test_pop_pc_2:
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pop {pc}
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/* Test pop instruction with full register list. */
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test_pop_pc_3_start:
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ldr r1, .L3_right
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ldr r2, .L3_wrong
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#if defined(__thumb__)
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movs r0, #1
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orrs r1, r0
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orrs r2, r0
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#endif
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push {r7}
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push {r1} /* Push the right address so that PC will get it. */
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/* Push the wrong address so r0-r7 will get the wrong a ddress. If PC
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is set from any of them, we can get a FAIL. */
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push {r2}
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push {r2}
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push {r2}
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push {r2}
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push {r2}
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push {r2}
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push {r2}
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push {r2}
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test_pop_pc_3:
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pop {r0,r1,r2,r3,r4,r5,r6,r7,pc}
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.global test_pop_pc_ret
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test_pop_pc_ret:
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pop {r7}
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bx lr
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.global test_pop_pc_1_right
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test_pop_pc_1_right:
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b test_pop_pc_2_start /* right */
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.global test_pop_pc_1_wrong
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test_pop_pc_1_wrong:
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b test_pop_pc_2_start /* wrong */
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.global test_pop_pc_2_right
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test_pop_pc_2_right:
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b test_pop_pc_3_start /* right */
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.global test_pop_pc_2_wrong
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test_pop_pc_2_wrong:
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b test_pop_pc_3_start /* wrong */
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.global test_pop_pc_3_right
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test_pop_pc_3_right:
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b test_pop_pc_ret /* right */
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.global test_pop_pc_3_wrong
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test_pop_pc_3_wrong:
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b test_pop_pc_ret /* wrong */
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.align 2
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.L1_right:
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.word test_pop_pc_1_right
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.L1_wrong:
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.word test_pop_pc_1_wrong
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.L2_right:
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.word test_pop_pc_2_right
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.L2_wrong:
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.word test_pop_pc_2_wrong
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.L3_right:
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.word test_pop_pc_3_right
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.L3_wrong:
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.word test_pop_pc_3_wrong
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.size test_pop_pc, .-test_pop_pc
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#if !defined(__thumb__)
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#if defined (__thumb2__)
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.code 16
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.thumb_func
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#endif
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.global test_str_pc
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.type test_str_pc, %function
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test_str_pc:
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str pc, [sp, #-4]
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ldr r0, [sp, #-4]
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sub r0, r0, pc
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/* compute offset again without displaced stepping. */
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str pc, [sp, #-4]
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ldr r1, [sp, #-4]
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sub r1, r1, pc
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/* r0 should be equal to r1. */
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cmp r0, r1
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bne pc_offset_wrong
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.global pc_offset_right
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pc_offset_right:
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b test_str_pc_end
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.global pc_offset_wrong
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pc_offset_wrong:
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nop
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.global test_str_pc_end
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test_str_pc_end:
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bx lr
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#endif
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#if defined(__thumb__)
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.global test_add_rn_pc
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.code 16
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.thumb_func
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test_add_rn_pc:
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mov r3, 4
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test_add_rn_pc_start:
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add r3, pc
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.global test_add_rn_pc_end
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test_add_rn_pc_end:
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bx lr
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.size test_add_rn_pc, .-test_add_rn_pc
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#endif
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