File: lo-addr-volatile.c

package info (click to toggle)
gcc-arm-none-eabi 15%3A8-2019-q3-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 571,828 kB
  • sloc: ansic: 2,937,651; cpp: 881,644; ada: 597,189; makefile: 65,528; asm: 56,499; xml: 46,621; exp: 24,747; sh: 19,684; python: 7,256; pascal: 4,370; awk: 3,497; perl: 2,695; yacc: 316; ml: 285; f90: 234; lex: 198; objc: 194; haskell: 119
file content (41 lines) | stat: -rw-r--r-- 1,240 bytes parent folder | download | duplicates (4)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
/* { dg-do compile } */
/* { dg-options "-O2 -march=r2 -mno-cache-volatile" } */
/* { dg-final { scan-assembler-times "addi\tr., r., %lo" 12 } } */
/* { dg-final { scan-assembler-not "ldw\t" } } */
/* { dg-final { scan-assembler-not "stw\t" } } */
/* { dg-final { scan-assembler-not "ldwio\tr., %lo" } } */
/* { dg-final { scan-assembler-not "stwio\tr., %lo" } } */

/* Check that we do not generate %lo addresses with R2 ldstio instructions.
   %lo requires a 16-bit relocation and on R2 these instructions only have a
   12-bit register offset.  */

#define TYPE int

struct ss
{
  TYPE x1,x2;
};

extern volatile TYPE S1;
extern volatile TYPE S2[];

extern volatile struct ss S3;
extern volatile struct ss S4[];

volatile TYPE *addr1 (void) { return &S1; }
TYPE get1 (void) { return S1; }
void set1 (TYPE value) { S1 = value; }

volatile TYPE *addr2 (int i) { return &(S2[i]); }
TYPE get2 (int i) { return S2[i]; }
void set2 (int i, TYPE value) { S2[i] = value; }

volatile TYPE *addr3 (void) { return &(S3.x2); }
TYPE get3 (void) { return S3.x2; }
void set3 (TYPE value) { S3.x2 = value; }

volatile TYPE *addr4 (int i) { return &(S4[i].x2); }
TYPE get4 (int i) { return S4[i].x2; }
void set4 (int i, TYPE value) { S4[i].x2 = value; }