san/kasan-test-arm64.s

   1 #include <arm64/proc_reg.h>
   2 #include <mach/arm64/asm.h>
   3 #include <architecture/arm/asm_help.h>
   4
   5 #define JMP_r19_20      #0x00
   6 #define JMP_r21_22      #0x10
   7 #define JMP_r23_24      #0x20
   8 #define JMP_r25_26      #0x30
   9 #define JMP_r27_28      #0x40
  10 #define JMP_r29_lr      #0x50
  11 #define JMP_fp_sp       #0x60
  12
  13 #define JMP_d8_d9       #0x70
  14 #define JMP_d10_d11     #0x80
  15 #define JMP_d12_d13     #0x90
  16 #define JMP_d14_d15     #0xA0
  17
  18 .text
  19
  20 .align 5
  21 .globl EXT(_setjmp)
  22 LEXT(_setjmp)
  23         add             x1, sp, #0      /* can't STP from sp */
  24         stp             x19, x20,       [x0, JMP_r19_20]
  25         stp             x21, x22,       [x0, JMP_r21_22]
  26         stp             x23, x24,       [x0, JMP_r23_24]
  27         stp             x25, x26,       [x0, JMP_r25_26]
  28         stp             x27, x28,       [x0, JMP_r27_28]
  29         stp             x29, lr,        [x0, JMP_r29_lr]
  30         stp             fp, x1,         [x0, JMP_fp_sp]
  31         stp             d8, d9,         [x0, JMP_d8_d9]
  32         stp             d10, d11,       [x0, JMP_d10_d11]
  33         stp             d12, d13,       [x0, JMP_d12_d13]
  34         stp             d14, d15,       [x0, JMP_d14_d15]
  35         mov             x0, #0
  36         ret
  37
  38 .align 5
  39 .globl EXT(_longjmp)
  40 LEXT(_longjmp)
  41         ldp             x19, x20,       [x0, JMP_r19_20]
  42         ldp             x21, x22,       [x0, JMP_r21_22]
  43         ldp             x23, x24,       [x0, JMP_r23_24]
  44         ldp             x25, x26,       [x0, JMP_r25_26]
  45         ldp             x27, x28,       [x0, JMP_r27_28]
  46         ldp             x29, lr,        [x0, JMP_r29_lr]
  47         ldp             fp, x2,         [x0, JMP_fp_sp]
  48         ldp             d8, d9,         [x0, JMP_d8_d9]
  49         ldp             d10, d11,       [x0, JMP_d10_d11]
  50         ldp             d12, d13,       [x0, JMP_d12_d13]
  51         ldp             d14, d15,       [x0, JMP_d14_d15]
  52         add             sp, x2, #0
  53         mov             x0, x1
  54         cmp             x0, #0          /* longjmp returns 1 if val is 0 */
  55         b.ne    1f
  56         add             x0, x0, #1
  57 1:      ret
  58