gdb/testsuite/gdb.arch/arm-disp-step.S

   1 /* Copyright 2010 Free Software Foundation, Inc.
   2
   3    This file is part of GDB.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  17
  18         .syntax unified
  19         .text
  20         .type main,%function
  21 #if defined (__thumb__) || defined (__thumb2__)
  22         .code   16
  23         .thumb_func
  24 #endif
  25         .globl main
  26 main:
  27         push {r7, lr}
  28         add     sp, sp, #4
  29         mov     r7, sp
  30
  31
  32         /* Test call and return */
  33         .global test_call
  34 test_call:
  35         bl test_call_subr
  36         .global test_ret_end
  37 test_ret_end:
  38         nop                     @ Location test_ret_end
  39
  40         /* Test branch */
  41         bl test_branch
  42
  43         /* Test ldr from pc */
  44         bl test_ldr_pc
  45
  46         /* Test ldm/stm only in ARM mode */
  47 #if !defined (__thumb__) && !defined (__thumb2__)
  48         bl test_ldm_stm_pc
  49 #endif
  50
  51         /* Return */
  52         mov     sp, r7
  53         sub     sp, sp, #4
  54         movs    r0, #0
  55         pop     {r7, pc}
  56         .size main, .-main
  57
  58         .global test_call_subr
  59 #if defined (__thumb__) || defined (__thumb2__)
  60         .code   16
  61         .thumb_func
  62 #endif
  63         .type test_call_subr, %function
  64 test_call_subr:
  65         nop
  66         .global test_call_end
  67 test_call_end:
  68         nop                     @ Location test_call_end
  69         .global test_ret
  70 test_ret:
  71         bx lr
  72         .size test_call_subr, .-test_call_subr
  73
  74
  75         .global test_branch
  76 #if defined (__thumb__) || defined (__thumb2__)
  77         .code   16
  78         .thumb_func
  79 #endif
  80         .type test_branch, %function
  81 test_branch:
  82         b       L_branch
  83         .global
  84 L_branch:
  85         bx lr
  86         .size test_branch, .-test_branch
  87
  88         .global test_ldr_pc
  89 #if defined (__thumb__) || defined (__thumb2__)
  90         .code   16
  91         .thumb_func
  92 #endif
  93         .type test_ldr_pc, %function
  94 test_ldr_pc:
  95         ldr     r1, [pc, #0]
  96
  97         .global
  98 test_ldr_pc_ret:
  99         bx lr
 100         .size test_ldr_pc, .-test_ldr_pc
 101
 102 #if !defined (__thumb__) && !defined (__thumb2__)
 103         .global test_ldm_stm_pc
 104         .type test_ldm_stm_pc, %function
 105 test_ldm_stm_pc:
 106         stmdb   sp!, {lr, pc}
 107         ldmia   sp!, {r0, r1}
 108         ldr     r0, .L1
 109         stmdb   sp!, {r0}
 110         .global
 111 test_ldm_pc:
 112         ldmia   sp!, {pc}
 113         .global
 114 test_ldm_stm_pc_ret:
 115         bx lr
 116         .align  2
 117 .L1:
 118         .word   test_ldm_stm_pc_ret
 119         .size test_ldm_stm_pc, .-test_ldm_stm_pc
 120 #endif