| /* |
| * test relax |
| * addi <-> addei! : for addei : register number must be in 0-15, offset : 4b, only 16b -> 32b |
| * (1)addi rD, simm16 : rD = rD + simm16, -32768 <= simm16 <= 32767 |
| * (2)addei! rD, imm4 : rD = rD + 2**imm4 |
| * addi <-> subei! : for addei : register number must be in 0-15, offset : 4b, only 16b -> 32b |
| * (1)addi rD, simm16 : rD = rD + simm16, -32768 <= simm16 <= 32767 |
| * (2)subei! rD, imm4 : rD = rD + 2**imm4 |
| |
| * Author: ligang |
| */ |
| |
| /* This macro transform 16b instruction to 32b. */ |
| .macro tran1632 insn32, insn16, sign |
| .align 4 |
| |
| \insn16 r0, 0 #16b -> 32b |
| \insn32 r0, \sign * 1 |
| |
| \insn16 r15, 4 #16b -> 32b |
| \insn32 r15, \sign * 16 |
| |
| \insn16 r15, 14 #16b -> 32b |
| \insn32 r15, \sign * 1024 * 16 |
| |
| \insn16 r8, 3 #No transform |
| \insn16 r8, 3 #No transform |
| |
| \insn16 r15, 15 #No transform. Because 2**15 = 32768, extend range of addi |
| \insn32 r15, 0x7FFF |
| |
| .endm |
| |
| .text |
| |
| tran1632 "addi.c", "addei!", 1 |
| tran1632 "addi.c", "subei!", -1 |
