diff options
Diffstat (limited to 'tcg/tcg.h')
| -rw-r--r-- | tcg/tcg.h | 60 |
1 files changed, 26 insertions, 34 deletions
@@ -29,6 +29,7 @@ #include "cpu.h" #include "exec/tb-context.h" #include "qemu/bitops.h" +#include "qemu/queue.h" #include "tcg-mo.h" #include "tcg-target.h" @@ -40,7 +41,7 @@ #else #define MAX_OPC_PARAM_PER_ARG 1 #endif -#define MAX_OPC_PARAM_IARGS 5 +#define MAX_OPC_PARAM_IARGS 6 #define MAX_OPC_PARAM_OARGS 1 #define MAX_OPC_PARAM_ARGS (MAX_OPC_PARAM_IARGS + MAX_OPC_PARAM_OARGS) @@ -48,8 +49,6 @@ * and up to 4 + N parameters on 64-bit archs * (N = number of input arguments + output arguments). */ #define MAX_OPC_PARAM (4 + (MAX_OPC_PARAM_PER_ARG * MAX_OPC_PARAM_ARGS)) -#define OPC_BUF_SIZE 640 -#define OPC_MAX_SIZE (OPC_BUF_SIZE - MAX_OP_PER_INSTR) #define CPU_TEMP_BUF_NLONGS 128 @@ -428,15 +427,6 @@ typedef TCGv_ptr TCGv_env; #error Unhandled TARGET_LONG_BITS value #endif -/* See the comment before tcgv_i32_temp. */ -#define TCGV_UNUSED_I32(x) (x = (TCGv_i32)NULL) -#define TCGV_UNUSED_I64(x) (x = (TCGv_i64)NULL) -#define TCGV_UNUSED_PTR(x) (x = (TCGv_ptr)NULL) - -#define TCGV_IS_UNUSED_I32(x) ((x) == (TCGv_i32)NULL) -#define TCGV_IS_UNUSED_I64(x) ((x) == (TCGv_i64)NULL) -#define TCGV_IS_UNUSED_PTR(x) ((x) == (TCGv_ptr)NULL) - /* call flags */ /* Helper does not read globals (either directly or through an exception). It implies TCG_CALL_NO_WRITE_GLOBALS. */ @@ -498,6 +488,12 @@ static inline TCGCond tcg_unsigned_cond(TCGCond c) return c & 2 ? (TCGCond)(c ^ 6) : c; } +/* Create a "signed" version of an "unsigned" comparison. */ +static inline TCGCond tcg_signed_cond(TCGCond c) +{ + return c & 4 ? (TCGCond)(c ^ 6) : c; +} + /* Must a comparison be considered unsigned? */ static inline bool is_unsigned_cond(TCGCond c) { @@ -576,28 +572,25 @@ typedef uint16_t TCGLifeData; typedef struct TCGOp { TCGOpcode opc : 8; /* 8 */ - /* The number of out and in parameter for a call. */ - unsigned calli : 4; /* 12 */ - unsigned callo : 2; /* 14 */ - unsigned : 2; /* 16 */ - - /* Index of the prev/next op, or 0 for the end of the list. */ - unsigned prev : 16; /* 32 */ - unsigned next : 16; /* 48 */ + /* Parameters for this opcode. See below. */ + unsigned param1 : 4; /* 12 */ + unsigned param2 : 4; /* 16 */ /* Lifetime data of the operands. */ - unsigned life : 16; /* 64 */ + unsigned life : 16; /* 32 */ + + /* Next and previous opcodes. */ + QTAILQ_ENTRY(TCGOp) link; /* Arguments for the opcode. */ TCGArg args[MAX_OPC_PARAM]; } TCGOp; -/* Make sure that we don't expand the structure without noticing. */ -QEMU_BUILD_BUG_ON(sizeof(TCGOp) != 8 + sizeof(TCGArg) * MAX_OPC_PARAM); +#define TCGOP_CALLI(X) (X)->param1 +#define TCGOP_CALLO(X) (X)->param2 /* Make sure operands fit in the bitfields above. */ QEMU_BUILD_BUG_ON(NB_OPS > (1 << 8)); -QEMU_BUILD_BUG_ON(OPC_BUF_SIZE > (1 << 16)); typedef struct TCGProfile { int64_t tb_count1; @@ -651,8 +644,6 @@ struct TCGContext { int goto_tb_issue_mask; #endif - int gen_next_op_idx; - /* Code generation. Note that we specifically do not use tcg_insn_unit here, because there's too much arithmetic throughout that relies on addition and subtraction working on bytes. Rely on the GCC @@ -683,12 +674,12 @@ struct TCGContext { TCGTempSet free_temps[TCG_TYPE_COUNT * 2]; TCGTemp temps[TCG_MAX_TEMPS]; /* globals first, temps after */ + QTAILQ_HEAD(TCGOpHead, TCGOp) ops, free_ops; + /* Tells which temporary holds a given register. It does not take into account fixed registers */ TCGTemp *reg_to_temp[TCG_TARGET_NB_REGS]; - TCGOp gen_op_buf[OPC_BUF_SIZE]; - uint16_t gen_insn_end_off[TCG_MAX_INSNS]; target_ulong gen_insn_data[TCG_MAX_INSNS][TARGET_INSN_START_WORDS]; }; @@ -778,21 +769,21 @@ static inline TCGv_i32 TCGV_HIGH(TCGv_i64 t) } #endif -static inline void tcg_set_insn_param(int op_idx, int arg, TCGArg v) +static inline void tcg_set_insn_param(TCGOp *op, int arg, TCGArg v) { - tcg_ctx->gen_op_buf[op_idx].args[arg] = v; + op->args[arg] = v; } -/* The number of opcodes emitted so far. */ -static inline int tcg_op_buf_count(void) +/* The last op that was emitted. */ +static inline TCGOp *tcg_last_op(void) { - return tcg_ctx->gen_next_op_idx; + return QTAILQ_LAST(&tcg_ctx->ops, TCGOpHead); } /* Test for whether to terminate the TB for using too many opcodes. */ static inline bool tcg_op_buf_full(void) { - return tcg_op_buf_count() >= OPC_MAX_SIZE; + return false; } /* pool based memory allocation */ @@ -976,6 +967,7 @@ bool tcg_op_supported(TCGOpcode op); void tcg_gen_callN(void *func, TCGTemp *ret, int nargs, TCGTemp **args); +TCGOp *tcg_emit_op(TCGOpcode opc); void tcg_op_remove(TCGContext *s, TCGOp *op); TCGOp *tcg_op_insert_before(TCGContext *s, TCGOp *op, TCGOpcode opc, int narg); TCGOp *tcg_op_insert_after(TCGContext *s, TCGOp *op, TCGOpcode opc, int narg); |