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/* Copyright 2010-2013 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
.syntax unified
.text
.type main,%function
#if defined (__thumb__)
.code 16
.thumb_func
#endif
.globl main
main:
push {r7, lr}
add sp, sp, #4
mov r7, sp
/* Test call and return */
.global test_call
test_call:
bl test_call_subr
.global test_ret_end
test_ret_end:
nop @ Location test_ret_end
/* Test branch */
bl test_branch
/* Test ldr from pc */
bl test_ldr_pc
/* Test ldm/stm only in ARM mode */
#if !defined (__thumb__)
bl test_ldm_stm_pc
#endif
/* Test ldrX literal in ARM and Thumb-2 */
#if !defined (__thumb__) || defined(__thumb2__)
bl test_ldr_literal
#endif
/* Test ldr literal in Thumb */
#if defined(__thumb__)
bl test_ldr_literal_16
#endif
/* Test cbnz/cbz in Thumb-2 */
#if defined(__thumb2__)
bl test_cbz_cbnz
#endif
/* Test adr in Thumb and Thumb-2 */
#if defined(__thumb__)
bl test_adr
#endif
/* Test 32-bit adr in ARM and Thumb-2 */
#if defined(__thumb2__) || !defined(__thumb__)
bl test_adr_32bit
#endif
bl test_pop_pc
/* Test str in ARM mode and Thumb-2 */
#if !defined(__thumb__)
bl test_str_pc
#endif
/* Return */
mov sp, r7
sub sp, sp, #4
movs r0, #0
pop {r7, pc}
.size main, .-main
.global test_call_subr
#if defined (__thumb__)
.code 16
.thumb_func
#endif
.type test_call_subr, %function
test_call_subr:
nop
.global test_call_end
test_call_end:
nop @ Location test_call_end
.global test_ret
test_ret:
bx lr
.size test_call_subr, .-test_call_subr
.global test_branch
#if defined (__thumb__)
.code 16
.thumb_func
#endif
.type test_branch, %function
test_branch:
b L_branch
.global L_branch
L_branch:
bx lr
.size test_branch, .-test_branch
.global test_ldr_pc
#if defined (__thumb__)
.code 16
.thumb_func
#endif
.type test_ldr_pc, %function
test_ldr_pc:
ldr r1, [pc, #0]
.global test_ldr_pc_ret
test_ldr_pc_ret:
bx lr
.size test_ldr_pc, .-test_ldr_pc
#if !defined (__thumb__)
.global test_ldm_stm_pc
.type test_ldm_stm_pc, %function
test_ldm_stm_pc:
stmdb sp!, {lr, pc}
ldmia sp!, {r0, r1}
ldr r0, .L1
stmdb sp!, {r0}
.global test_ldm_pc
test_ldm_pc:
ldmia sp!, {pc}
.global test_ldm_stm_pc_ret
test_ldm_stm_pc_ret:
bx lr
.align 2
.L1:
.word test_ldm_stm_pc_ret
.size test_ldm_stm_pc, .-test_ldm_stm_pc
#endif
#if !defined (__thumb__) || defined(__thumb2__)
.global test_ldr_literal
.type test_ldr_literal, %function
test_ldr_literal:
ldrh r0, [pc]
.global test_ldrsb_literal
test_ldrsb_literal:
ldrsb r0, [pc]
.global test_ldrsh_literal
test_ldrsh_literal:
ldrsh r0, [pc]
.global test_ldr_literal_end
test_ldr_literal_end:
bx lr
.size test_ldr_literal, .-test_ldr_literal
#endif
#if defined(__thumb__)
.global test_ldr_literal_16
.code 16
.thumb_func
test_ldr_literal_16:
ldr r0, .L2
.global test_ldr_literal_16_end
test_ldr_literal_16_end:
bx lr
.align 2
.L2:
.word test_ldr_literal_16
.size test_ldr_literal_16, .-test_ldr_literal_16
#endif
#if defined(__thumb2__)
.global test_cbz_cbnz
.code 16
.thumb_func
test_cbz_cbnz:
movs r0, #0
.global test_zero_cbnz
test_zero_cbnz:
cbnz r0, .L3
.global test_zero_cbz
test_zero_cbz:
cbz r0, .L3
.L3:
movs r0, #1
.global test_non_zero_cbz
test_non_zero_cbz:
cbz r0, .L4
.global test_non_zero_cbnz
test_non_zero_cbnz:
cbnz r0, .L4
nop
.L4:
.global test_cbz_cbnz_end
test_cbz_cbnz_end:
bx lr
.size test_cbz_cbnz, .-test_cbz_cbnz
#endif
#if defined(__thumb__)
.global test_adr
.code 16
.thumb_func
test_adr:
adr r0, .L8
nop
nop
nop
.L8:
.global test_adr_end
test_adr_end:
bx lr
.size test_adr, .-test_adr
#endif
#if defined(__thumb2__) || !defined(__thumb__)
.global test_adr_32bit
#if defined(__thumb2__)
.code 16
.thumb_func
#endif
test_adr_32bit:
adr r0, .L6
nop
.L6:
nop
.global test_adr_32bit_after
test_adr_32bit_after:
adr r0, .L6
.global test_adr_32bit_end
test_adr_32bit_end:
bx lr
.size test_adr_32bit, .-test_adr_32bit
#endif
.global test_pop_pc
.type test_pop_pc, %function
#if defined(__thumb__)
.code 16
.thumb_func
#endif
test_pop_pc:
ldr r1, .L1_right
ldr r2, .L1_wrong
#if defined(__thumb__)
movs r0, #1
orrs r1, r0
orrs r2, r0
#endif
push {r1}
push {r2}
.global test_pop_pc_1
test_pop_pc_1:
pop {r1, pc}
test_pop_pc_2_start:
ldr r1, .L2_right
#if defined(__thumb__)
movs r0, #1
orrs r1, r0
#endif
push {r1}
.global test_pop_pc_2
test_pop_pc_2:
pop {pc}
/* Test pop instruction with full register list. */
test_pop_pc_3_start:
ldr r1, .L3_right
ldr r2, .L3_wrong
#if defined(__thumb__)
movs r0, #1
orrs r1, r0
orrs r2, r0
#endif
push {r7}
push {r1} /* Push the right address so that PC will get it. */
/* Push the wrong address so r0-r7 will get the wrong a ddress. If PC
is set from any of them, we can get a FAIL. */
push {r2}
push {r2}
push {r2}
push {r2}
push {r2}
push {r2}
push {r2}
push {r2}
test_pop_pc_3:
pop {r0,r1,r2,r3,r4,r5,r6,r7,pc}
.global test_pop_pc_ret
test_pop_pc_ret:
pop {r7}
bx lr
.global test_pop_pc_1_right
test_pop_pc_1_right:
b test_pop_pc_2_start /* right */
.global test_pop_pc_1_wrong
test_pop_pc_1_wrong:
b test_pop_pc_2_start /* wrong */
.global test_pop_pc_2_right
test_pop_pc_2_right:
b test_pop_pc_3_start /* right */
.global test_pop_pc_2_wrong
test_pop_pc_2_wrong:
b test_pop_pc_3_start /* wrong */
.global test_pop_pc_3_right
test_pop_pc_3_right:
b test_pop_pc_ret /* right */
.global test_pop_pc_3_wrong
test_pop_pc_3_wrong:
b test_pop_pc_ret /* wrong */
.align 2
.L1_right:
.word test_pop_pc_1_right
.L1_wrong:
.word test_pop_pc_1_wrong
.L2_right:
.word test_pop_pc_2_right
.L2_wrong:
.word test_pop_pc_2_wrong
.L3_right:
.word test_pop_pc_3_right
.L3_wrong:
.word test_pop_pc_3_wrong
.size test_pop_pc, .-test_pop_pc
#if !defined(__thumb__)
#if defined (__thumb2__)
.code 16
.thumb_func
#endif
.global test_str_pc
.type test_str_pc, %function
test_str_pc:
str pc, [sp, #-4]
ldr r0, [sp, #-4]
sub r0, r0, pc
/* compute offset again without displaced stepping. */
str pc, [sp, #-4]
ldr r1, [sp, #-4]
sub r1, r1, pc
/* r0 should be equal to r1. */
cmp r0, r1
bne pc_offset_wrong
.global pc_offset_right
pc_offset_right:
b test_str_pc_end
.global pc_offset_wrong
pc_offset_wrong:
nop
.global test_str_pc_end
test_str_pc_end:
bx lr
#endif
|
