* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
-#include "qemu-common.h"
+#ifndef TCG_H
+#define TCG_H
+
+#include "qemu-common.h"
+#include "qemu/bitops.h"
#include "tcg-target.h"
/* Default target word size to pointer size. */
#if TCG_TARGET_REG_BITS == 32
/* Turn some undef macros into false macros. */
+#define TCG_TARGET_HAS_trunc_shr_i32 0
#define TCG_TARGET_HAS_div_i64 0
#define TCG_TARGET_HAS_rem_i64 0
#define TCG_TARGET_HAS_div2_i64 0
/* Turn some undef macros into true macros. */
#define TCG_TARGET_HAS_add2_i32 1
#define TCG_TARGET_HAS_sub2_i32 1
-#define TCG_TARGET_HAS_mulu2_i32 1
#endif
#ifndef TCG_TARGET_deposit_i32_valid
#define TCG_TARGET_HAS_rem_i64 0
#endif
+/* For 32-bit targets, some sort of unsigned widening multiply is required. */
+#if TCG_TARGET_REG_BITS == 32 \
+ && !(defined(TCG_TARGET_HAS_mulu2_i32) \
+ || defined(TCG_TARGET_HAS_muluh_i32))
+# error "Missing unsigned widening multiply"
+#endif
+
typedef enum TCGOpcode {
#define DEF(name, oargs, iargs, cargs, flags) INDEX_op_ ## name,
#include "tcg-opc.h"
#define tcg_regset_andnot(d, a, b) (d) = (a) & ~(b)
#define tcg_regset_not(d, a) (d) = ~(a)
+#ifndef TCG_TARGET_INSN_UNIT_SIZE
+# error "Missing TCG_TARGET_INSN_UNIT_SIZE"
+#elif TCG_TARGET_INSN_UNIT_SIZE == 1
+typedef uint8_t tcg_insn_unit;
+#elif TCG_TARGET_INSN_UNIT_SIZE == 2
+typedef uint16_t tcg_insn_unit;
+#elif TCG_TARGET_INSN_UNIT_SIZE == 4
+typedef uint32_t tcg_insn_unit;
+#elif TCG_TARGET_INSN_UNIT_SIZE == 8
+typedef uint64_t tcg_insn_unit;
+#else
+/* The port better have done this. */
+#endif
+
+
typedef struct TCGRelocation {
struct TCGRelocation *next;
int type;
- uint8_t *ptr;
+ tcg_insn_unit *ptr;
intptr_t addend;
} TCGRelocation;
int has_value;
union {
uintptr_t value;
+ tcg_insn_unit *value_ptr;
TCGRelocation *first_reloc;
} u;
} TCGLabel;
#endif
} TCGType;
+/* Constants for qemu_ld and qemu_st for the Memory Operation field. */
+typedef enum TCGMemOp {
+ MO_8 = 0,
+ MO_16 = 1,
+ MO_32 = 2,
+ MO_64 = 3,
+ MO_SIZE = 3, /* Mask for the above. */
+
+ MO_SIGN = 4, /* Sign-extended, otherwise zero-extended. */
+
+ MO_BSWAP = 8, /* Host reverse endian. */
+#ifdef HOST_WORDS_BIGENDIAN
+ MO_LE = MO_BSWAP,
+ MO_BE = 0,
+#else
+ MO_LE = 0,
+ MO_BE = MO_BSWAP,
+#endif
+#ifdef TARGET_WORDS_BIGENDIAN
+ MO_TE = MO_BE,
+#else
+ MO_TE = MO_LE,
+#endif
+
+ /* Combinations of the above, for ease of use. */
+ MO_UB = MO_8,
+ MO_UW = MO_16,
+ MO_UL = MO_32,
+ MO_SB = MO_SIGN | MO_8,
+ MO_SW = MO_SIGN | MO_16,
+ MO_SL = MO_SIGN | MO_32,
+ MO_Q = MO_64,
+
+ MO_LEUW = MO_LE | MO_UW,
+ MO_LEUL = MO_LE | MO_UL,
+ MO_LESW = MO_LE | MO_SW,
+ MO_LESL = MO_LE | MO_SL,
+ MO_LEQ = MO_LE | MO_Q,
+
+ MO_BEUW = MO_BE | MO_UW,
+ MO_BEUL = MO_BE | MO_UL,
+ MO_BESW = MO_BE | MO_SW,
+ MO_BESL = MO_BE | MO_SL,
+ MO_BEQ = MO_BE | MO_Q,
+
+ MO_TEUW = MO_TE | MO_UW,
+ MO_TEUL = MO_TE | MO_UL,
+ MO_TESW = MO_TE | MO_SW,
+ MO_TESL = MO_TE | MO_SL,
+ MO_TEQ = MO_TE | MO_Q,
+
+ MO_SSIZE = MO_SIZE | MO_SIGN,
+} TCGMemOp;
+
typedef tcg_target_ulong TCGArg;
/* Define a type and accessor macros for variables. Using a struct is
are aliases for target_ulong and host pointer sized values respectively.
*/
-#if defined(CONFIG_QEMU_LDST_OPTIMIZATION) && defined(CONFIG_SOFTMMU)
-/* Macros/structures for qemu_ld/st IR code optimization:
- TCG_MAX_HELPER_LABELS is defined as same as OPC_BUF_SIZE in exec-all.h. */
-#define TCG_MAX_QEMU_LDST 640
-
-typedef struct TCGLabelQemuLdst {
- int is_ld:1; /* qemu_ld: 1, qemu_st: 0 */
- int opc:4;
- int addrlo_reg; /* reg index for low word of guest virtual addr */
- int addrhi_reg; /* reg index for high word of guest virtual addr */
- int datalo_reg; /* reg index for low word to be loaded or stored */
- int datahi_reg; /* reg index for high word to be loaded or stored */
- int mem_index; /* soft MMU memory index */
- uint8_t *raddr; /* gen code addr of the next IR of qemu_ld/st IR */
- uint8_t *label_ptr[2]; /* label pointers to be updated */
-} TCGLabelQemuLdst;
-#endif
-
#ifdef CONFIG_DEBUG_TCG
#define DEBUG_TCGV 1
#endif
#define TCGV_EQUAL_I32(a, b) (GET_TCGV_I32(a) == GET_TCGV_I32(b))
#define TCGV_EQUAL_I64(a, b) (GET_TCGV_I64(a) == GET_TCGV_I64(b))
+#define TCGV_EQUAL_PTR(a, b) (GET_TCGV_PTR(a) == GET_TCGV_PTR(b))
/* Dummy definition to avoid compiler warnings. */
#define TCGV_UNUSED_I32(x) x = MAKE_TCGV_I32(-1)
#define TCGV_UNUSED_I64(x) x = MAKE_TCGV_I64(-1)
+#define TCGV_UNUSED_PTR(x) x = MAKE_TCGV_PTR(-1)
#define TCGV_IS_UNUSED_I32(x) (GET_TCGV_I32(x) == -1)
#define TCGV_IS_UNUSED_I64(x) (GET_TCGV_I64(x) == -1)
+#define TCGV_IS_UNUSED_PTR(x) (GET_TCGV_PTR(x) == -1)
/* call flags */
/* Helper does not read globals (either directly or through an exception). It
basic blocks. Otherwise, it is not
preserved across basic blocks. */
unsigned int temp_allocated:1; /* never used for code gen */
- /* index of next free temp of same base type, -1 if end */
- int next_free_temp;
const char *name;
} TCGTemp;
-typedef struct TCGHelperInfo {
- tcg_target_ulong func;
- const char *name;
-} TCGHelperInfo;
-
typedef struct TCGContext TCGContext;
+typedef struct TCGTempSet {
+ unsigned long l[BITS_TO_LONGS(TCG_MAX_TEMPS)];
+} TCGTempSet;
+
struct TCGContext {
uint8_t *pool_cur, *pool_end;
TCGPool *pool_first, *pool_current, *pool_first_large;
int nb_labels;
int nb_globals;
int nb_temps;
- /* index of free temps, -1 if none */
- int first_free_temp[TCG_TYPE_COUNT * 2];
/* goto_tb support */
- uint8_t *code_buf;
+ tcg_insn_unit *code_buf;
uintptr_t *tb_next;
uint16_t *tb_next_offset;
uint16_t *tb_jmp_offset; /* != NULL if USE_DIRECT_JUMP */
intptr_t frame_end;
int frame_reg;
- uint8_t *code_ptr;
+ tcg_insn_unit *code_ptr;
TCGTemp temps[TCG_MAX_TEMPS]; /* globals first, temps after */
+ TCGTempSet free_temps[TCG_TYPE_COUNT * 2];
- TCGHelperInfo *helpers;
- int nb_helpers;
- int allocated_helpers;
- int helpers_sorted;
+ GHashTable *helpers;
#ifdef CONFIG_PROFILER
/* profiling info */
uint16_t gen_opc_icount[OPC_BUF_SIZE];
uint8_t gen_opc_instr_start[OPC_BUF_SIZE];
- /* Code generation */
+ /* 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
+ extension that allows arithmetic on void*. */
int code_gen_max_blocks;
- uint8_t *code_gen_prologue;
- uint8_t *code_gen_buffer;
+ void *code_gen_prologue;
+ void *code_gen_buffer;
size_t code_gen_buffer_size;
/* threshold to flush the translated code buffer */
size_t code_gen_buffer_max_size;
- uint8_t *code_gen_ptr;
+ void *code_gen_ptr;
TBContext tb_ctx;
-#if defined(CONFIG_QEMU_LDST_OPTIMIZATION) && defined(CONFIG_SOFTMMU)
- /* labels info for qemu_ld/st IRs
- The labels help to generate TLB miss case codes at the end of TB */
- TCGLabelQemuLdst *qemu_ldst_labels;
- int nb_qemu_ldst_labels;
-#endif
+ /* The TCGBackendData structure is private to tcg-target.c. */
+ struct TCGBackendData *be;
};
extern TCGContext tcg_ctx;
void tcg_prologue_init(TCGContext *s);
void tcg_func_start(TCGContext *s);
-int tcg_gen_code(TCGContext *s, uint8_t *gen_code_buf);
-int tcg_gen_code_search_pc(TCGContext *s, uint8_t *gen_code_buf, long offset);
+int tcg_gen_code(TCGContext *s, tcg_insn_unit *gen_code_buf);
+int tcg_gen_code_search_pc(TCGContext *s, tcg_insn_unit *gen_code_buf,
+ long offset);
void tcg_set_frame(TCGContext *s, int reg, intptr_t start, intptr_t size);
#define tcg_temp_free_ptr(T) tcg_temp_free_i64(TCGV_PTR_TO_NAT(T))
#endif
-void tcg_gen_callN(TCGContext *s, TCGv_ptr func, unsigned int flags,
+void tcg_gen_callN(TCGContext *s, void *func, unsigned int flags,
int sizemask, TCGArg ret, int nargs, TCGArg *args);
void tcg_gen_shifti_i64(TCGv_i64 ret, TCGv_i64 arg1,
TCGOpDef *tcg_op_def);
/* only used for debugging purposes */
-void tcg_register_helper(void *func, const char *name);
-const char *tcg_helper_get_name(TCGContext *s, void *func);
void tcg_dump_ops(TCGContext *s);
void dump_ops(const uint16_t *opc_buf, const TCGArg *opparam_buf);
TCGv_i32 tcg_const_local_i32(int32_t val);
TCGv_i64 tcg_const_local_i64(int64_t val);
+/**
+ * tcg_ptr_byte_diff
+ * @a, @b: addresses to be differenced
+ *
+ * There are many places within the TCG backends where we need a byte
+ * difference between two pointers. While this can be accomplished
+ * with local casting, it's easy to get wrong -- especially if one is
+ * concerned with the signedness of the result.
+ *
+ * This version relies on GCC's void pointer arithmetic to get the
+ * correct result.
+ */
+
+static inline ptrdiff_t tcg_ptr_byte_diff(void *a, void *b)
+{
+ return a - b;
+}
+
+/**
+ * tcg_pcrel_diff
+ * @s: the tcg context
+ * @target: address of the target
+ *
+ * Produce a pc-relative difference, from the current code_ptr
+ * to the destination address.
+ */
+
+static inline ptrdiff_t tcg_pcrel_diff(TCGContext *s, void *target)
+{
+ return tcg_ptr_byte_diff(target, s->code_ptr);
+}
+
+/**
+ * tcg_current_code_size
+ * @s: the tcg context
+ *
+ * Compute the current code size within the translation block.
+ * This is used to fill in qemu's data structures for goto_tb.
+ */
+
+static inline size_t tcg_current_code_size(TCGContext *s)
+{
+ return tcg_ptr_byte_diff(s->code_ptr, s->code_buf);
+}
+
/**
* tcg_qemu_tb_exec:
* @env: CPUArchState * for the CPU
void tcg_register_jit(void *buf, size_t buf_size);
-#if defined(CONFIG_QEMU_LDST_OPTIMIZATION) && defined(CONFIG_SOFTMMU)
-/* Generate TB finalization at the end of block */
-void tcg_out_tb_finalize(TCGContext *s);
+/*
+ * Memory helpers that will be used by TCG generated code.
+ */
+#ifdef CONFIG_SOFTMMU
+/* Value zero-extended to tcg register size. */
+tcg_target_ulong helper_ret_ldub_mmu(CPUArchState *env, target_ulong addr,
+ int mmu_idx, uintptr_t retaddr);
+tcg_target_ulong helper_le_lduw_mmu(CPUArchState *env, target_ulong addr,
+ int mmu_idx, uintptr_t retaddr);
+tcg_target_ulong helper_le_ldul_mmu(CPUArchState *env, target_ulong addr,
+ int mmu_idx, uintptr_t retaddr);
+uint64_t helper_le_ldq_mmu(CPUArchState *env, target_ulong addr,
+ int mmu_idx, uintptr_t retaddr);
+tcg_target_ulong helper_be_lduw_mmu(CPUArchState *env, target_ulong addr,
+ int mmu_idx, uintptr_t retaddr);
+tcg_target_ulong helper_be_ldul_mmu(CPUArchState *env, target_ulong addr,
+ int mmu_idx, uintptr_t retaddr);
+uint64_t helper_be_ldq_mmu(CPUArchState *env, target_ulong addr,
+ int mmu_idx, uintptr_t retaddr);
+
+/* Value sign-extended to tcg register size. */
+tcg_target_ulong helper_ret_ldsb_mmu(CPUArchState *env, target_ulong addr,
+ int mmu_idx, uintptr_t retaddr);
+tcg_target_ulong helper_le_ldsw_mmu(CPUArchState *env, target_ulong addr,
+ int mmu_idx, uintptr_t retaddr);
+tcg_target_ulong helper_le_ldsl_mmu(CPUArchState *env, target_ulong addr,
+ int mmu_idx, uintptr_t retaddr);
+tcg_target_ulong helper_be_ldsw_mmu(CPUArchState *env, target_ulong addr,
+ int mmu_idx, uintptr_t retaddr);
+tcg_target_ulong helper_be_ldsl_mmu(CPUArchState *env, target_ulong addr,
+ int mmu_idx, uintptr_t retaddr);
+
+void helper_ret_stb_mmu(CPUArchState *env, target_ulong addr, uint8_t val,
+ int mmu_idx, uintptr_t retaddr);
+void helper_le_stw_mmu(CPUArchState *env, target_ulong addr, uint16_t val,
+ int mmu_idx, uintptr_t retaddr);
+void helper_le_stl_mmu(CPUArchState *env, target_ulong addr, uint32_t val,
+ int mmu_idx, uintptr_t retaddr);
+void helper_le_stq_mmu(CPUArchState *env, target_ulong addr, uint64_t val,
+ int mmu_idx, uintptr_t retaddr);
+void helper_be_stw_mmu(CPUArchState *env, target_ulong addr, uint16_t val,
+ int mmu_idx, uintptr_t retaddr);
+void helper_be_stl_mmu(CPUArchState *env, target_ulong addr, uint32_t val,
+ int mmu_idx, uintptr_t retaddr);
+void helper_be_stq_mmu(CPUArchState *env, target_ulong addr, uint64_t val,
+ int mmu_idx, uintptr_t retaddr);
+
+/* Temporary aliases until backends are converted. */
+#ifdef TARGET_WORDS_BIGENDIAN
+# define helper_ret_ldsw_mmu helper_be_ldsw_mmu
+# define helper_ret_lduw_mmu helper_be_lduw_mmu
+# define helper_ret_ldsl_mmu helper_be_ldsl_mmu
+# define helper_ret_ldul_mmu helper_be_ldul_mmu
+# define helper_ret_ldq_mmu helper_be_ldq_mmu
+# define helper_ret_stw_mmu helper_be_stw_mmu
+# define helper_ret_stl_mmu helper_be_stl_mmu
+# define helper_ret_stq_mmu helper_be_stq_mmu
+#else
+# define helper_ret_ldsw_mmu helper_le_ldsw_mmu
+# define helper_ret_lduw_mmu helper_le_lduw_mmu
+# define helper_ret_ldsl_mmu helper_le_ldsl_mmu
+# define helper_ret_ldul_mmu helper_le_ldul_mmu
+# define helper_ret_ldq_mmu helper_le_ldq_mmu
+# define helper_ret_stw_mmu helper_le_stw_mmu
+# define helper_ret_stl_mmu helper_le_stl_mmu
+# define helper_ret_stq_mmu helper_le_stq_mmu
#endif
+
+uint8_t helper_ldb_mmu(CPUArchState *env, target_ulong addr, int mmu_idx);
+uint16_t helper_ldw_mmu(CPUArchState *env, target_ulong addr, int mmu_idx);
+uint32_t helper_ldl_mmu(CPUArchState *env, target_ulong addr, int mmu_idx);
+uint64_t helper_ldq_mmu(CPUArchState *env, target_ulong addr, int mmu_idx);
+
+void helper_stb_mmu(CPUArchState *env, target_ulong addr,
+ uint8_t val, int mmu_idx);
+void helper_stw_mmu(CPUArchState *env, target_ulong addr,
+ uint16_t val, int mmu_idx);
+void helper_stl_mmu(CPUArchState *env, target_ulong addr,
+ uint32_t val, int mmu_idx);
+void helper_stq_mmu(CPUArchState *env, target_ulong addr,
+ uint64_t val, int mmu_idx);
+#endif /* CONFIG_SOFTMMU */
+
+#endif /* TCG_H */
projects / qemu.git / blobdiff