qemu/tcg/i386/tcg-target-con-str.h
Richard Henderson 36df88c040 tcg/i386: Drop BYTEH deposits for 64-bit
It is more useful to allow low-part deposits into all registers
than to restrict allocation for high-byte deposits.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-08-24 11:22:42 -07:00

33 lines
875 B
C

/* SPDX-License-Identifier: MIT */
/*
* Define i386 target-specific operand constraints.
* Copyright (c) 2021 Linaro
*
*/
/*
* Define constraint letters for register sets:
* REGS(letter, register_mask)
*/
REGS('a', 1u << TCG_REG_EAX)
REGS('b', 1u << TCG_REG_EBX)
REGS('c', 1u << TCG_REG_ECX)
REGS('d', 1u << TCG_REG_EDX)
REGS('S', 1u << TCG_REG_ESI)
REGS('D', 1u << TCG_REG_EDI)
REGS('r', ALL_GENERAL_REGS)
REGS('x', ALL_VECTOR_REGS)
REGS('q', ALL_BYTEL_REGS) /* regs that can be used as a byte operand */
REGS('L', ALL_GENERAL_REGS & ~SOFTMMU_RESERVE_REGS) /* qemu_ld/st */
REGS('s', ALL_BYTEL_REGS & ~SOFTMMU_RESERVE_REGS) /* qemu_st8_i32 data */
/*
* Define constraint letters for constants:
* CONST(letter, TCG_CT_CONST_* bit set)
*/
CONST('e', TCG_CT_CONST_S32)
CONST('I', TCG_CT_CONST_I32)
CONST('W', TCG_CT_CONST_WSZ)
CONST('Z', TCG_CT_CONST_U32)