| /* DN(X) generates 2**N copies of asm instruction X. */ |
| #define D0(X) X |
| #define D1(X) X "\n\t" X |
| #define D2(X) D1 (D1 (X)) |
| #define D3(X) D2 (D1 (X)) |
| #define D4(X) D2 (D2 (X)) |
| #define D5(X) D4 (D1 (X)) |
| #define D6(X) D4 (D2 (X)) |
| #define D7(X) D4 (D2 (D1 (X))) |
| #define D8(X) D4 (D4 (X)) |
| #define D9(X) D8 (D1 (X)) |
| #define D10(X) D8 (D2 (X)) |
| #define D11(X) D8 (D2 (D1 (X))) |
| #define D12(X) D8 (D4 (X)) |
| #define D13(X) D8 (D4 (D1 (X))) |
| #define D14(X) D8 (D4 (D2 (X))) |
| |
| /* Emit something that is 0x1fff8 bytes long, which is the largest |
| permissible range for non-MIPS16 forward branches. */ |
| #define OCCUPY_0x1fff8 \ |
| asm (D14 ("nop") "\n\t" \ |
| D13 ("nop") "\n\t" \ |
| D12 ("nop") "\n\t" \ |
| D11 ("nop") "\n\t" \ |
| D10 ("nop") "\n\t" \ |
| D9 ("nop") "\n\t" \ |
| D8 ("nop") "\n\t" \ |
| D7 ("nop") "\n\t" \ |
| D6 ("nop") "\n\t" \ |
| D5 ("nop") "\n\t" \ |
| D4 ("nop") "\n\t" \ |
| D3 ("nop") "\n\t" \ |
| D2 ("nop") "\n\t" \ |
| D1 ("nop")) |
| |
| /* Emit something that is 0xfffc bytes long, which is the largest |
| permissible range for microMIPS forward branches when branches |
| have delay slots. */ |
| #define OCCUPY_0xfffc \ |
| asm (D13 ("nop32") "\n\t" \ |
| D12 ("nop32") "\n\t" \ |
| D11 ("nop32") "\n\t" \ |
| D10 ("nop32") "\n\t" \ |
| D9 ("nop32") "\n\t" \ |
| D8 ("nop32") "\n\t" \ |
| D7 ("nop32") "\n\t" \ |
| D6 ("nop32") "\n\t" \ |
| D5 ("nop32") "\n\t" \ |
| D4 ("nop32") "\n\t" \ |
| D3 ("nop32") "\n\t" \ |
| D2 ("nop32") "\n\t" \ |
| D1 ("nop32") "\n\t" \ |
| D0 ("nop32")) |
| /* Likewise emit something that is 0x1fffc bytes long. */ |
| #define OCCUPY_0x1fffc do { asm ("nop"); OCCUPY_0x1fff8; } while (0) |
| /* Likewise emit something that is 0x10000 bytes long. */ |
| #define OCCUPY_0x10000 do { asm ("nop32"); OCCUPY_0xfffc; } while (0) |
