| typedef unsigned int u32; |
| |
| static const u32 deadfish = 0xdeadf155; |
| |
| static const u32 cfb_tab8_be[] = { |
| 0x00000000,0x000000ff,0x0000ff00,0x0000ffff, |
| 0x00ff0000,0x00ff00ff,0x00ffff00,0x00ffffff, |
| 0xff000000,0xff0000ff,0xff00ff00,0xff00ffff, |
| 0xffff0000,0xffff00ff,0xffffff00,0xffffffff |
| }; |
| |
| static const u32 cfb_tab8_le[] = { |
| 0x00000000,0xff000000,0x00ff0000,0xffff0000, |
| 0x0000ff00,0xff00ff00,0x00ffff00,0xffffff00, |
| 0x000000ff,0xff0000ff,0x00ff00ff,0xffff00ff, |
| 0x0000ffff,0xff00ffff,0x00ffffff,0xffffffff |
| }; |
| |
| static const u32 cfb_tab16_be[] = { |
| 0x00000000, 0x0000ffff, 0xffff0000, 0xffffffff |
| }; |
| |
| static const u32 cfb_tab16_le[] = { |
| 0x00000000, 0xffff0000, 0x0000ffff, 0xffffffff |
| }; |
| |
| static const u32 cfb_tab32[] = { |
| 0x00000000, 0xffffffff |
| }; |
| |
| |
| |
| |
| |
| |
| const u32 *xxx(int bpp) |
| { |
| const u32 *tab; |
| |
| if (0) return &deadfish; |
| |
| switch (bpp) { |
| case 8: |
| tab = cfb_tab8_be; |
| break; |
| case 16: |
| tab = cfb_tab16_be; |
| break; |
| case 32: |
| default: |
| tab = cfb_tab32; |
| break; |
| } |
| |
| return tab; |
| } |
| |
| int main(void) |
| { |
| const u32 *a = xxx(8); |
| int b = a[0]; |
| if (b != cfb_tab8_be[0]) |
| __builtin_abort (); |
| return 0; |
| } |