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