projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| ee1ee5b5 NC |
1 | /* |
| 2 | * test relax | |
| 3 | * addi <-> addei! : for addei : register number must be in 0-15, offset : 4b, only 16b -> 32b | |
| 4 | * (1)addi rD, simm16 : rD = rD + simm16, -32768 <= simm16 <= 32767 | |
| 5 | * (2)addei! rD, imm4 : rD = rD + 2**imm4 | |
| 6 | * addi <-> subei! : for addei : register number must be in 0-15, offset : 4b, only 16b -> 32b | |
| 7 | * (1)addi rD, simm16 : rD = rD + simm16, -32768 <= simm16 <= 32767 | |
| 8 | * (2)subei! rD, imm4 : rD = rD + 2**imm4 | |
| 9 | ||
| 10 | * Author: ligang | |
| 11 | */ | |
| 12 | ||
| 13 | /* This macro transform 16b instruction to 32b. */ | |
| 14 | .macro tran1632 insn32, insn16, sign | |
| 15 | .align 4 | |
| 16 | ||
| 17 | \insn16 r0, 0 #16b -> 32b | |
| 18 | \insn32 r0, \sign * 1 | |
| 19 | ||
| 20 | \insn16 r15, 4 #16b -> 32b | |
| 21 | \insn32 r15, \sign * 16 | |
| 22 | ||
| 23 | \insn16 r15, 14 #16b -> 32b | |
| 24 | \insn32 r15, \sign * 1024 * 16 | |
| 25 | ||
| 26 | \insn16 r8, 3 #No transform | |
| 27 | \insn16 r8, 3 #No transform | |
| 28 | ||
| 29 | \insn16 r15, 15 #No transform. Because 2**15 = 32768, extend range of addi | |
| 30 | \insn32 r15, 0x7FFF | |
| 31 | ||
| 32 | .endm | |
| 33 | ||
| 34 | .text | |
| 35 | ||
| 36 | tran1632 "addi.c", "addei!", 1 | |
| 37 | tran1632 "addi.c", "subei!", -1 |