| /* SPDX-License-Identifier: MIT */ |
| /* |
| * Define S390 target-specific operand constraints. |
| * Copyright (c) 2021 Linaro |
| */ |
| |
| /* |
| * Define constraint letters for register sets: |
| * REGS(letter, register_mask) |
| */ |
| REGS('r', ALL_GENERAL_REGS) |
| REGS('L', ALL_GENERAL_REGS & ~SOFTMMU_RESERVE_REGS) |
| REGS('v', ALL_VECTOR_REGS) |
| /* |
| * A (single) even/odd pair for division. |
| * TODO: Add something to the register allocator to allow |
| * this kind of regno+1 pairing to be done more generally. |
| */ |
| REGS('a', 1u << TCG_REG_R2) |
| REGS('b', 1u << TCG_REG_R3) |
| |
| /* |
| * Define constraint letters for constants: |
| * CONST(letter, TCG_CT_CONST_* bit set) |
| */ |
| CONST('A', TCG_CT_CONST_S33) |
| CONST('I', TCG_CT_CONST_S16) |
| CONST('J', TCG_CT_CONST_S32) |
| CONST('Z', TCG_CT_CONST_ZERO) |
