10f4e14c2SRichard Henderson /* 20f4e14c2SRichard Henderson * TCG Helper Infomation Structure 30f4e14c2SRichard Henderson * 40f4e14c2SRichard Henderson * Copyright (c) 2023 Linaro Ltd 50f4e14c2SRichard Henderson * 60f4e14c2SRichard Henderson * SPDX-License-Identifier: GPL-2.0-or-later 70f4e14c2SRichard Henderson */ 80f4e14c2SRichard Henderson 90f4e14c2SRichard Henderson #ifndef TCG_HELPER_INFO_H 100f4e14c2SRichard Henderson #define TCG_HELPER_INFO_H 110f4e14c2SRichard Henderson 120f4e14c2SRichard Henderson #ifdef CONFIG_TCG_INTERPRETER 130f4e14c2SRichard Henderson #include <ffi.h> 140f4e14c2SRichard Henderson #endif 150f4e14c2SRichard Henderson 160f4e14c2SRichard Henderson /* 170f4e14c2SRichard Henderson * Describe the calling convention of a given argument type. 180f4e14c2SRichard Henderson */ 190f4e14c2SRichard Henderson typedef enum { 200f4e14c2SRichard Henderson TCG_CALL_RET_NORMAL, /* by registers */ 210f4e14c2SRichard Henderson TCG_CALL_RET_BY_REF, /* for i128, by reference */ 220f4e14c2SRichard Henderson TCG_CALL_RET_BY_VEC, /* for i128, by vector register */ 230f4e14c2SRichard Henderson } TCGCallReturnKind; 240f4e14c2SRichard Henderson 250f4e14c2SRichard Henderson typedef enum { 260f4e14c2SRichard Henderson TCG_CALL_ARG_NORMAL, /* by registers (continuing onto stack) */ 270f4e14c2SRichard Henderson TCG_CALL_ARG_EVEN, /* like normal, but skipping odd slots */ 280f4e14c2SRichard Henderson TCG_CALL_ARG_EXTEND, /* for i32, as a sign/zero-extended i64 */ 290f4e14c2SRichard Henderson TCG_CALL_ARG_EXTEND_U, /* ... as a zero-extended i64 */ 300f4e14c2SRichard Henderson TCG_CALL_ARG_EXTEND_S, /* ... as a sign-extended i64 */ 310f4e14c2SRichard Henderson TCG_CALL_ARG_BY_REF, /* for i128, by reference, first */ 320f4e14c2SRichard Henderson TCG_CALL_ARG_BY_REF_N, /* ... by reference, subsequent */ 330f4e14c2SRichard Henderson } TCGCallArgumentKind; 340f4e14c2SRichard Henderson 350f4e14c2SRichard Henderson typedef struct TCGCallArgumentLoc { 360f4e14c2SRichard Henderson TCGCallArgumentKind kind : 8; 370f4e14c2SRichard Henderson unsigned arg_slot : 8; 380f4e14c2SRichard Henderson unsigned ref_slot : 8; 390f4e14c2SRichard Henderson unsigned arg_idx : 4; 400f4e14c2SRichard Henderson unsigned tmp_subindex : 2; 410f4e14c2SRichard Henderson } TCGCallArgumentLoc; 420f4e14c2SRichard Henderson 43*d53106c9SRichard Henderson struct TCGHelperInfo { 440f4e14c2SRichard Henderson void *func; 450f4e14c2SRichard Henderson const char *name; 46*d53106c9SRichard Henderson 47*d53106c9SRichard Henderson /* Used with g_once_init_enter. */ 480f4e14c2SRichard Henderson #ifdef CONFIG_TCG_INTERPRETER 490f4e14c2SRichard Henderson ffi_cif *cif; 50*d53106c9SRichard Henderson #else 51*d53106c9SRichard Henderson uintptr_t init; 520f4e14c2SRichard Henderson #endif 53*d53106c9SRichard Henderson 540f4e14c2SRichard Henderson unsigned typemask : 32; 550f4e14c2SRichard Henderson unsigned flags : 8; 560f4e14c2SRichard Henderson unsigned nr_in : 8; 570f4e14c2SRichard Henderson unsigned nr_out : 8; 580f4e14c2SRichard Henderson TCGCallReturnKind out_kind : 8; 590f4e14c2SRichard Henderson 600f4e14c2SRichard Henderson /* Maximum physical arguments are constrained by TCG_TYPE_I128. */ 610f4e14c2SRichard Henderson TCGCallArgumentLoc in[MAX_CALL_IARGS * (128 / TCG_TARGET_REG_BITS)]; 62*d53106c9SRichard Henderson }; 630f4e14c2SRichard Henderson 640f4e14c2SRichard Henderson #endif /* TCG_HELPER_INFO_H */ 65