diff options
Diffstat (limited to 'tcg/tcg-internal.h')
| -rw-r--r-- | tcg/tcg-internal.h | 58 |
1 files changed, 56 insertions, 2 deletions
diff --git a/tcg/tcg-internal.h b/tcg/tcg-internal.h index cc82088d52..6e50aeba3a 100644 --- a/tcg/tcg-internal.h +++ b/tcg/tcg-internal.h @@ -25,13 +25,53 @@ #ifndef TCG_INTERNAL_H #define TCG_INTERNAL_H +#ifdef CONFIG_TCG_INTERPRETER +#include <ffi.h> +#endif + #define TCG_HIGHWATER 1024 +/* + * Describe the calling convention of a given argument type. + */ +typedef enum { + TCG_CALL_RET_NORMAL, /* by registers */ +} TCGCallReturnKind; + +typedef enum { + TCG_CALL_ARG_NORMAL, /* by registers (continuing onto stack) */ + TCG_CALL_ARG_EVEN, /* like normal, but skipping odd slots */ + TCG_CALL_ARG_EXTEND, /* for i32, as a sign/zero-extended i64 */ + TCG_CALL_ARG_EXTEND_U, /* ... as a zero-extended i64 */ + TCG_CALL_ARG_EXTEND_S, /* ... as a sign-extended i64 */ +} TCGCallArgumentKind; + +typedef struct TCGCallArgumentLoc { + TCGCallArgumentKind kind : 8; + unsigned arg_slot : 8; + unsigned ref_slot : 8; + unsigned arg_idx : 4; + unsigned tmp_subindex : 2; +} TCGCallArgumentLoc; + +/* Avoid "unsigned < 0 is always false" Werror, when iarg_regs is empty. */ +#define REG_P(L) \ + ((int)(L)->arg_slot < (int)ARRAY_SIZE(tcg_target_call_iarg_regs)) + typedef struct TCGHelperInfo { void *func; const char *name; - unsigned flags; - unsigned typemask; +#ifdef CONFIG_TCG_INTERPRETER + ffi_cif *cif; +#endif + unsigned typemask : 32; + unsigned flags : 8; + unsigned nr_in : 8; + unsigned nr_out : 8; + TCGCallReturnKind out_kind : 8; + + /* Maximum physical arguments are constrained by TCG_TYPE_I128. */ + TCGCallArgumentLoc in[MAX_CALL_IARGS * (128 / TCG_TARGET_REG_BITS)]; } TCGHelperInfo; extern TCGContext tcg_init_ctx; @@ -59,4 +99,18 @@ static inline unsigned tcg_call_flags(TCGOp *op) return tcg_call_info(op)->flags; } +#if TCG_TARGET_REG_BITS == 32 +static inline TCGv_i32 TCGV_LOW(TCGv_i64 t) +{ + return temp_tcgv_i32(tcgv_i64_temp(t) + HOST_BIG_ENDIAN); +} +static inline TCGv_i32 TCGV_HIGH(TCGv_i64 t) +{ + return temp_tcgv_i32(tcgv_i64_temp(t) + !HOST_BIG_ENDIAN); +} +#else +extern TCGv_i32 TCGV_LOW(TCGv_i64) QEMU_ERROR("32-bit code path is reachable"); +extern TCGv_i32 TCGV_HIGH(TCGv_i64) QEMU_ERROR("32-bit code path is reachable"); +#endif + #endif /* TCG_INTERNAL_H */ |