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-rw-r--r--qemu/tcg/tcg.c2803
1 files changed, 0 insertions, 2803 deletions
diff --git a/qemu/tcg/tcg.c b/qemu/tcg/tcg.c
deleted file mode 100644
index 796addd1f..000000000
--- a/qemu/tcg/tcg.c
+++ /dev/null
@@ -1,2803 +0,0 @@
-/*
- * Tiny Code Generator for QEMU
- *
- * Copyright (c) 2008 Fabrice Bellard
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-/* define it to use liveness analysis (better code) */
-#define USE_LIVENESS_ANALYSIS
-#define USE_TCG_OPTIMIZATIONS
-
-#include "qemu/osdep.h"
-
-/* Define to jump the ELF file used to communicate with GDB. */
-#undef DEBUG_JIT
-
-#include "qemu/cutils.h"
-#include "qemu/host-utils.h"
-#include "qemu/timer.h"
-
-/* Note: the long term plan is to reduce the dependencies on the QEMU
- CPU definitions. Currently they are used for qemu_ld/st
- instructions */
-#define NO_CPU_IO_DEFS
-#include "cpu.h"
-
-#include "tcg-op.h"
-
-#if UINTPTR_MAX == UINT32_MAX
-# define ELF_CLASS ELFCLASS32
-#else
-# define ELF_CLASS ELFCLASS64
-#endif
-#ifdef HOST_WORDS_BIGENDIAN
-# define ELF_DATA ELFDATA2MSB
-#else
-# define ELF_DATA ELFDATA2LSB
-#endif
-
-#include "elf.h"
-#include "exec/log.h"
-
-/* Forward declarations for functions declared in tcg-target.inc.c and
- used here. */
-static void tcg_target_init(TCGContext *s);
-static void tcg_target_qemu_prologue(TCGContext *s);
-static void patch_reloc(tcg_insn_unit *code_ptr, int type,
- intptr_t value, intptr_t addend);
-
-/* The CIE and FDE header definitions will be common to all hosts. */
-typedef struct {
- uint32_t len __attribute__((aligned((sizeof(void *)))));
- uint32_t id;
- uint8_t version;
- char augmentation[1];
- uint8_t code_align;
- uint8_t data_align;
- uint8_t return_column;
-} DebugFrameCIE;
-
-typedef struct QEMU_PACKED {
- uint32_t len __attribute__((aligned((sizeof(void *)))));
- uint32_t cie_offset;
- uintptr_t func_start;
- uintptr_t func_len;
-} DebugFrameFDEHeader;
-
-typedef struct QEMU_PACKED {
- DebugFrameCIE cie;
- DebugFrameFDEHeader fde;
-} DebugFrameHeader;
-
-static void tcg_register_jit_int(void *buf, size_t size,
- const void *debug_frame,
- size_t debug_frame_size)
- __attribute__((unused));
-
-/* Forward declarations for functions declared and used in tcg-target.inc.c. */
-static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str);
-static void tcg_out_ld(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg1,
- intptr_t arg2);
-static void tcg_out_mov(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg);
-static void tcg_out_movi(TCGContext *s, TCGType type,
- TCGReg ret, tcg_target_long arg);
-static void tcg_out_op(TCGContext *s, TCGOpcode opc, const TCGArg *args,
- const int *const_args);
-static void tcg_out_st(TCGContext *s, TCGType type, TCGReg arg, TCGReg arg1,
- intptr_t arg2);
-static void tcg_out_call(TCGContext *s, tcg_insn_unit *target);
-static int tcg_target_const_match(tcg_target_long val, TCGType type,
- const TCGArgConstraint *arg_ct);
-static void tcg_out_tb_init(TCGContext *s);
-static bool tcg_out_tb_finalize(TCGContext *s);
-
-
-
-static TCGRegSet tcg_target_available_regs[2];
-static TCGRegSet tcg_target_call_clobber_regs;
-
-#if TCG_TARGET_INSN_UNIT_SIZE == 1
-static __attribute__((unused)) inline void tcg_out8(TCGContext *s, uint8_t v)
-{
- *s->code_ptr++ = v;
-}
-
-static __attribute__((unused)) inline void tcg_patch8(tcg_insn_unit *p,
- uint8_t v)
-{
- *p = v;
-}
-#endif
-
-#if TCG_TARGET_INSN_UNIT_SIZE <= 2
-static __attribute__((unused)) inline void tcg_out16(TCGContext *s, uint16_t v)
-{
- if (TCG_TARGET_INSN_UNIT_SIZE == 2) {
- *s->code_ptr++ = v;
- } else {
- tcg_insn_unit *p = s->code_ptr;
- memcpy(p, &v, sizeof(v));
- s->code_ptr = p + (2 / TCG_TARGET_INSN_UNIT_SIZE);
- }
-}
-
-static __attribute__((unused)) inline void tcg_patch16(tcg_insn_unit *p,
- uint16_t v)
-{
- if (TCG_TARGET_INSN_UNIT_SIZE == 2) {
- *p = v;
- } else {
- memcpy(p, &v, sizeof(v));
- }
-}
-#endif
-
-#if TCG_TARGET_INSN_UNIT_SIZE <= 4
-static __attribute__((unused)) inline void tcg_out32(TCGContext *s, uint32_t v)
-{
- if (TCG_TARGET_INSN_UNIT_SIZE == 4) {
- *s->code_ptr++ = v;
- } else {
- tcg_insn_unit *p = s->code_ptr;
- memcpy(p, &v, sizeof(v));
- s->code_ptr = p + (4 / TCG_TARGET_INSN_UNIT_SIZE);
- }
-}
-
-static __attribute__((unused)) inline void tcg_patch32(tcg_insn_unit *p,
- uint32_t v)
-{
- if (TCG_TARGET_INSN_UNIT_SIZE == 4) {
- *p = v;
- } else {
- memcpy(p, &v, sizeof(v));
- }
-}
-#endif
-
-#if TCG_TARGET_INSN_UNIT_SIZE <= 8
-static __attribute__((unused)) inline void tcg_out64(TCGContext *s, uint64_t v)
-{
- if (TCG_TARGET_INSN_UNIT_SIZE == 8) {
- *s->code_ptr++ = v;
- } else {
- tcg_insn_unit *p = s->code_ptr;
- memcpy(p, &v, sizeof(v));
- s->code_ptr = p + (8 / TCG_TARGET_INSN_UNIT_SIZE);
- }
-}
-
-static __attribute__((unused)) inline void tcg_patch64(tcg_insn_unit *p,
- uint64_t v)
-{
- if (TCG_TARGET_INSN_UNIT_SIZE == 8) {
- *p = v;
- } else {
- memcpy(p, &v, sizeof(v));
- }
-}
-#endif
-
-/* label relocation processing */
-
-static void tcg_out_reloc(TCGContext *s, tcg_insn_unit *code_ptr, int type,
- TCGLabel *l, intptr_t addend)
-{
- TCGRelocation *r;
-
- if (l->has_value) {
- /* FIXME: This may break relocations on RISC targets that
- modify instruction fields in place. The caller may not have
- written the initial value. */
- patch_reloc(code_ptr, type, l->u.value, addend);
- } else {
- /* add a new relocation entry */
- r = tcg_malloc(sizeof(TCGRelocation));
- r->type = type;
- r->ptr = code_ptr;
- r->addend = addend;
- r->next = l->u.first_reloc;
- l->u.first_reloc = r;
- }
-}
-
-static void tcg_out_label(TCGContext *s, TCGLabel *l, tcg_insn_unit *ptr)
-{
- intptr_t value = (intptr_t)ptr;
- TCGRelocation *r;
-
- tcg_debug_assert(!l->has_value);
-
- for (r = l->u.first_reloc; r != NULL; r = r->next) {
- patch_reloc(r->ptr, r->type, value, r->addend);
- }
-
- l->has_value = 1;
- l->u.value_ptr = ptr;
-}
-
-TCGLabel *gen_new_label(void)
-{
- TCGContext *s = &tcg_ctx;
- TCGLabel *l = tcg_malloc(sizeof(TCGLabel));
-
- *l = (TCGLabel){
- .id = s->nb_labels++
- };
-
- return l;
-}
-
-#include "tcg-target.inc.c"
-
-/* pool based memory allocation */
-void *tcg_malloc_internal(TCGContext *s, int size)
-{
- TCGPool *p;
- int pool_size;
-
- if (size > TCG_POOL_CHUNK_SIZE) {
- /* big malloc: insert a new pool (XXX: could optimize) */
- p = g_malloc(sizeof(TCGPool) + size);
- p->size = size;
- p->next = s->pool_first_large;
- s->pool_first_large = p;
- return p->data;
- } else {
- p = s->pool_current;
- if (!p) {
- p = s->pool_first;
- if (!p)
- goto new_pool;
- } else {
- if (!p->next) {
- new_pool:
- pool_size = TCG_POOL_CHUNK_SIZE;
- p = g_malloc(sizeof(TCGPool) + pool_size);
- p->size = pool_size;
- p->next = NULL;
- if (s->pool_current)
- s->pool_current->next = p;
- else
- s->pool_first = p;
- } else {
- p = p->next;
- }
- }
- }
- s->pool_current = p;
- s->pool_cur = p->data + size;
- s->pool_end = p->data + p->size;
- return p->data;
-}
-
-void tcg_pool_reset(TCGContext *s)
-{
- TCGPool *p, *t;
- for (p = s->pool_first_large; p; p = t) {
- t = p->next;
- g_free(p);
- }
- s->pool_first_large = NULL;
- s->pool_cur = s->pool_end = NULL;
- s->pool_current = NULL;
-}
-
-typedef struct TCGHelperInfo {
- void *func;
- const char *name;
- unsigned flags;
- unsigned sizemask;
-} TCGHelperInfo;
-
-#include "exec/helper-proto.h"
-
-static const TCGHelperInfo all_helpers[] = {
-#include "exec/helper-tcg.h"
-};
-
-static int indirect_reg_alloc_order[ARRAY_SIZE(tcg_target_reg_alloc_order)];
-
-void tcg_context_init(TCGContext *s)
-{
- int op, total_args, n, i;
- TCGOpDef *def;
- TCGArgConstraint *args_ct;
- int *sorted_args;
- GHashTable *helper_table;
-
- memset(s, 0, sizeof(*s));
- s->nb_globals = 0;
-
- /* Count total number of arguments and allocate the corresponding
- space */
- total_args = 0;
- for(op = 0; op < NB_OPS; op++) {
- def = &tcg_op_defs[op];
- n = def->nb_iargs + def->nb_oargs;
- total_args += n;
- }
-
- args_ct = g_malloc(sizeof(TCGArgConstraint) * total_args);
- sorted_args = g_malloc(sizeof(int) * total_args);
-
- for(op = 0; op < NB_OPS; op++) {
- def = &tcg_op_defs[op];
- def->args_ct = args_ct;
- def->sorted_args = sorted_args;
- n = def->nb_iargs + def->nb_oargs;
- sorted_args += n;
- args_ct += n;
- }
-
- /* Register helpers. */
- /* Use g_direct_hash/equal for direct pointer comparisons on func. */
- s->helpers = helper_table = g_hash_table_new(NULL, NULL);
-
- for (i = 0; i < ARRAY_SIZE(all_helpers); ++i) {
- g_hash_table_insert(helper_table, (gpointer)all_helpers[i].func,
- (gpointer)&all_helpers[i]);
- }
-
- tcg_target_init(s);
-
- /* Reverse the order of the saved registers, assuming they're all at
- the start of tcg_target_reg_alloc_order. */
- for (n = 0; n < ARRAY_SIZE(tcg_target_reg_alloc_order); ++n) {
- int r = tcg_target_reg_alloc_order[n];
- if (tcg_regset_test_reg(tcg_target_call_clobber_regs, r)) {
- break;
- }
- }
- for (i = 0; i < n; ++i) {
- indirect_reg_alloc_order[i] = tcg_target_reg_alloc_order[n - 1 - i];
- }
- for (; i < ARRAY_SIZE(tcg_target_reg_alloc_order); ++i) {
- indirect_reg_alloc_order[i] = tcg_target_reg_alloc_order[i];
- }
-}
-
-void tcg_prologue_init(TCGContext *s)
-{
- size_t prologue_size, total_size;
- void *buf0, *buf1;
-
- /* Put the prologue at the beginning of code_gen_buffer. */
- buf0 = s->code_gen_buffer;
- s->code_ptr = buf0;
- s->code_buf = buf0;
- s->code_gen_prologue = buf0;
-
- /* Generate the prologue. */
- tcg_target_qemu_prologue(s);
- buf1 = s->code_ptr;
- flush_icache_range((uintptr_t)buf0, (uintptr_t)buf1);
-
- /* Deduct the prologue from the buffer. */
- prologue_size = tcg_current_code_size(s);
- s->code_gen_ptr = buf1;
- s->code_gen_buffer = buf1;
- s->code_buf = buf1;
- total_size = s->code_gen_buffer_size - prologue_size;
- s->code_gen_buffer_size = total_size;
-
- /* Compute a high-water mark, at which we voluntarily flush the buffer
- and start over. The size here is arbitrary, significantly larger
- than we expect the code generation for any one opcode to require. */
- s->code_gen_highwater = s->code_gen_buffer + (total_size - 1024);
-
- tcg_register_jit(s->code_gen_buffer, total_size);
-
-#ifdef DEBUG_DISAS
- if (qemu_loglevel_mask(CPU_LOG_TB_OUT_ASM)) {
- qemu_log("PROLOGUE: [size=%zu]\n", prologue_size);
- log_disas(buf0, prologue_size);
- qemu_log("\n");
- qemu_log_flush();
- }
-#endif
-}
-
-void tcg_func_start(TCGContext *s)
-{
- tcg_pool_reset(s);
- s->nb_temps = s->nb_globals;
-
- /* No temps have been previously allocated for size or locality. */
- memset(s->free_temps, 0, sizeof(s->free_temps));
-
- s->nb_labels = 0;
- s->current_frame_offset = s->frame_start;
-
-#ifdef CONFIG_DEBUG_TCG
- s->goto_tb_issue_mask = 0;
-#endif
-
- s->gen_first_op_idx = 0;
- s->gen_last_op_idx = -1;
- s->gen_next_op_idx = 0;
- s->gen_next_parm_idx = 0;
-
- s->be = tcg_malloc(sizeof(TCGBackendData));
-}
-
-static inline int temp_idx(TCGContext *s, TCGTemp *ts)
-{
- ptrdiff_t n = ts - s->temps;
- tcg_debug_assert(n >= 0 && n < s->nb_temps);
- return n;
-}
-
-static inline TCGTemp *tcg_temp_alloc(TCGContext *s)
-{
- int n = s->nb_temps++;
- tcg_debug_assert(n < TCG_MAX_TEMPS);
- return memset(&s->temps[n], 0, sizeof(TCGTemp));
-}
-
-static inline TCGTemp *tcg_global_alloc(TCGContext *s)
-{
- tcg_debug_assert(s->nb_globals == s->nb_temps);
- s->nb_globals++;
- return tcg_temp_alloc(s);
-}
-
-static int tcg_global_reg_new_internal(TCGContext *s, TCGType type,
- TCGReg reg, const char *name)
-{
- TCGTemp *ts;
-
- if (TCG_TARGET_REG_BITS == 32 && type != TCG_TYPE_I32) {
- tcg_abort();
- }
-
- ts = tcg_global_alloc(s);
- ts->base_type = type;
- ts->type = type;
- ts->fixed_reg = 1;
- ts->reg = reg;
- ts->name = name;
- tcg_regset_set_reg(s->reserved_regs, reg);
-
- return temp_idx(s, ts);
-}
-
-void tcg_set_frame(TCGContext *s, TCGReg reg, intptr_t start, intptr_t size)
-{
- int idx;
- s->frame_start = start;
- s->frame_end = start + size;
- idx = tcg_global_reg_new_internal(s, TCG_TYPE_PTR, reg, "_frame");
- s->frame_temp = &s->temps[idx];
-}
-
-TCGv_i32 tcg_global_reg_new_i32(TCGReg reg, const char *name)
-{
- TCGContext *s = &tcg_ctx;
- int idx;
-
- if (tcg_regset_test_reg(s->reserved_regs, reg)) {
- tcg_abort();
- }
- idx = tcg_global_reg_new_internal(s, TCG_TYPE_I32, reg, name);
- return MAKE_TCGV_I32(idx);
-}
-
-TCGv_i64 tcg_global_reg_new_i64(TCGReg reg, const char *name)
-{
- TCGContext *s = &tcg_ctx;
- int idx;
-
- if (tcg_regset_test_reg(s->reserved_regs, reg)) {
- tcg_abort();
- }
- idx = tcg_global_reg_new_internal(s, TCG_TYPE_I64, reg, name);
- return MAKE_TCGV_I64(idx);
-}
-
-int tcg_global_mem_new_internal(TCGType type, TCGv_ptr base,
- intptr_t offset, const char *name)
-{
- TCGContext *s = &tcg_ctx;
- TCGTemp *base_ts = &s->temps[GET_TCGV_PTR(base)];
- TCGTemp *ts = tcg_global_alloc(s);
- int indirect_reg = 0, bigendian = 0;
-#ifdef HOST_WORDS_BIGENDIAN
- bigendian = 1;
-#endif
-
- if (!base_ts->fixed_reg) {
- indirect_reg = 1;
- base_ts->indirect_base = 1;
- }
-
- if (TCG_TARGET_REG_BITS == 32 && type == TCG_TYPE_I64) {
- TCGTemp *ts2 = tcg_global_alloc(s);
- char buf[64];
-
- ts->base_type = TCG_TYPE_I64;
- ts->type = TCG_TYPE_I32;
- ts->indirect_reg = indirect_reg;
- ts->mem_allocated = 1;
- ts->mem_base = base_ts;
- ts->mem_offset = offset + bigendian * 4;
- pstrcpy(buf, sizeof(buf), name);
- pstrcat(buf, sizeof(buf), "_0");
- ts->name = strdup(buf);
-
- tcg_debug_assert(ts2 == ts + 1);
- ts2->base_type = TCG_TYPE_I64;
- ts2->type = TCG_TYPE_I32;
- ts2->indirect_reg = indirect_reg;
- ts2->mem_allocated = 1;
- ts2->mem_base = base_ts;
- ts2->mem_offset = offset + (1 - bigendian) * 4;
- pstrcpy(buf, sizeof(buf), name);
- pstrcat(buf, sizeof(buf), "_1");
- ts->name = strdup(buf);
- } else {
- ts->base_type = type;
- ts->type = type;
- ts->indirect_reg = indirect_reg;
- ts->mem_allocated = 1;
- ts->mem_base = base_ts;
- ts->mem_offset = offset;
- ts->name = name;
- }
- return temp_idx(s, ts);
-}
-
-static int tcg_temp_new_internal(TCGType type, int temp_local)
-{
- TCGContext *s = &tcg_ctx;
- TCGTemp *ts;
- int idx, k;
-
- k = type + (temp_local ? TCG_TYPE_COUNT : 0);
- idx = find_first_bit(s->free_temps[k].l, TCG_MAX_TEMPS);
- if (idx < TCG_MAX_TEMPS) {
- /* There is already an available temp with the right type. */
- clear_bit(idx, s->free_temps[k].l);
-
- ts = &s->temps[idx];
- ts->temp_allocated = 1;
- tcg_debug_assert(ts->base_type == type);
- tcg_debug_assert(ts->temp_local == temp_local);
- } else {
- ts = tcg_temp_alloc(s);
- if (TCG_TARGET_REG_BITS == 32 && type == TCG_TYPE_I64) {
- TCGTemp *ts2 = tcg_temp_alloc(s);
-
- ts->base_type = type;
- ts->type = TCG_TYPE_I32;
- ts->temp_allocated = 1;
- ts->temp_local = temp_local;
-
- tcg_debug_assert(ts2 == ts + 1);
- ts2->base_type = TCG_TYPE_I64;
- ts2->type = TCG_TYPE_I32;
- ts2->temp_allocated = 1;
- ts2->temp_local = temp_local;
- } else {
- ts->base_type = type;
- ts->type = type;
- ts->temp_allocated = 1;
- ts->temp_local = temp_local;
- }
- idx = temp_idx(s, ts);
- }
-
-#if defined(CONFIG_DEBUG_TCG)
- s->temps_in_use++;
-#endif
- return idx;
-}
-
-TCGv_i32 tcg_temp_new_internal_i32(int temp_local)
-{
- int idx;
-
- idx = tcg_temp_new_internal(TCG_TYPE_I32, temp_local);
- return MAKE_TCGV_I32(idx);
-}
-
-TCGv_i64 tcg_temp_new_internal_i64(int temp_local)
-{
- int idx;
-
- idx = tcg_temp_new_internal(TCG_TYPE_I64, temp_local);
- return MAKE_TCGV_I64(idx);
-}
-
-static void tcg_temp_free_internal(int idx)
-{
- TCGContext *s = &tcg_ctx;
- TCGTemp *ts;
- int k;
-
-#if defined(CONFIG_DEBUG_TCG)
- s->temps_in_use--;
- if (s->temps_in_use < 0) {
- fprintf(stderr, "More temporaries freed than allocated!\n");
- }
-#endif
-
- tcg_debug_assert(idx >= s->nb_globals && idx < s->nb_temps);
- ts = &s->temps[idx];
- tcg_debug_assert(ts->temp_allocated != 0);
- ts->temp_allocated = 0;
-
- k = ts->base_type + (ts->temp_local ? TCG_TYPE_COUNT : 0);
- set_bit(idx, s->free_temps[k].l);
-}
-
-void tcg_temp_free_i32(TCGv_i32 arg)
-{
- tcg_temp_free_internal(GET_TCGV_I32(arg));
-}
-
-void tcg_temp_free_i64(TCGv_i64 arg)
-{
- tcg_temp_free_internal(GET_TCGV_I64(arg));
-}
-
-TCGv_i32 tcg_const_i32(int32_t val)
-{
- TCGv_i32 t0;
- t0 = tcg_temp_new_i32();
- tcg_gen_movi_i32(t0, val);
- return t0;
-}
-
-TCGv_i64 tcg_const_i64(int64_t val)
-{
- TCGv_i64 t0;
- t0 = tcg_temp_new_i64();
- tcg_gen_movi_i64(t0, val);
- return t0;
-}
-
-TCGv_i32 tcg_const_local_i32(int32_t val)
-{
- TCGv_i32 t0;
- t0 = tcg_temp_local_new_i32();
- tcg_gen_movi_i32(t0, val);
- return t0;
-}
-
-TCGv_i64 tcg_const_local_i64(int64_t val)
-{
- TCGv_i64 t0;
- t0 = tcg_temp_local_new_i64();
- tcg_gen_movi_i64(t0, val);
- return t0;
-}
-
-#if defined(CONFIG_DEBUG_TCG)
-void tcg_clear_temp_count(void)
-{
- TCGContext *s = &tcg_ctx;
- s->temps_in_use = 0;
-}
-
-int tcg_check_temp_count(void)
-{
- TCGContext *s = &tcg_ctx;
- if (s->temps_in_use) {
- /* Clear the count so that we don't give another
- * warning immediately next time around.
- */
- s->temps_in_use = 0;
- return 1;
- }
- return 0;
-}
-#endif
-
-/* Note: we convert the 64 bit args to 32 bit and do some alignment
- and endian swap. Maybe it would be better to do the alignment
- and endian swap in tcg_reg_alloc_call(). */
-void tcg_gen_callN(TCGContext *s, void *func, TCGArg ret,
- int nargs, TCGArg *args)
-{
- int i, real_args, nb_rets, pi, pi_first;
- unsigned sizemask, flags;
- TCGHelperInfo *info;
-
- info = g_hash_table_lookup(s->helpers, (gpointer)func);
- flags = info->flags;
- sizemask = info->sizemask;
-
-#if defined(__sparc__) && !defined(__arch64__) \
- && !defined(CONFIG_TCG_INTERPRETER)
- /* We have 64-bit values in one register, but need to pass as two
- separate parameters. Split them. */
- int orig_sizemask = sizemask;
- int orig_nargs = nargs;
- TCGv_i64 retl, reth;
-
- TCGV_UNUSED_I64(retl);
- TCGV_UNUSED_I64(reth);
- if (sizemask != 0) {
- TCGArg *split_args = __builtin_alloca(sizeof(TCGArg) * nargs * 2);
- for (i = real_args = 0; i < nargs; ++i) {
- int is_64bit = sizemask & (1 << (i+1)*2);
- if (is_64bit) {
- TCGv_i64 orig = MAKE_TCGV_I64(args[i]);
- TCGv_i32 h = tcg_temp_new_i32();
- TCGv_i32 l = tcg_temp_new_i32();
- tcg_gen_extr_i64_i32(l, h, orig);
- split_args[real_args++] = GET_TCGV_I32(h);
- split_args[real_args++] = GET_TCGV_I32(l);
- } else {
- split_args[real_args++] = args[i];
- }
- }
- nargs = real_args;
- args = split_args;
- sizemask = 0;
- }
-#elif defined(TCG_TARGET_EXTEND_ARGS) && TCG_TARGET_REG_BITS == 64
- for (i = 0; i < nargs; ++i) {
- int is_64bit = sizemask & (1 << (i+1)*2);
- int is_signed = sizemask & (2 << (i+1)*2);
- if (!is_64bit) {
- TCGv_i64 temp = tcg_temp_new_i64();
- TCGv_i64 orig = MAKE_TCGV_I64(args[i]);
- if (is_signed) {
- tcg_gen_ext32s_i64(temp, orig);
- } else {
- tcg_gen_ext32u_i64(temp, orig);
- }
- args[i] = GET_TCGV_I64(temp);
- }
- }
-#endif /* TCG_TARGET_EXTEND_ARGS */
-
- pi_first = pi = s->gen_next_parm_idx;
- if (ret != TCG_CALL_DUMMY_ARG) {
-#if defined(__sparc__) && !defined(__arch64__) \
- && !defined(CONFIG_TCG_INTERPRETER)
- if (orig_sizemask & 1) {
- /* The 32-bit ABI is going to return the 64-bit value in
- the %o0/%o1 register pair. Prepare for this by using
- two return temporaries, and reassemble below. */
- retl = tcg_temp_new_i64();
- reth = tcg_temp_new_i64();
- s->gen_opparam_buf[pi++] = GET_TCGV_I64(reth);
- s->gen_opparam_buf[pi++] = GET_TCGV_I64(retl);
- nb_rets = 2;
- } else {
- s->gen_opparam_buf[pi++] = ret;
- nb_rets = 1;
- }
-#else
- if (TCG_TARGET_REG_BITS < 64 && (sizemask & 1)) {
-#ifdef HOST_WORDS_BIGENDIAN
- s->gen_opparam_buf[pi++] = ret + 1;
- s->gen_opparam_buf[pi++] = ret;
-#else
- s->gen_opparam_buf[pi++] = ret;
- s->gen_opparam_buf[pi++] = ret + 1;
-#endif
- nb_rets = 2;
- } else {
- s->gen_opparam_buf[pi++] = ret;
- nb_rets = 1;
- }
-#endif
- } else {
- nb_rets = 0;
- }
- real_args = 0;
- for (i = 0; i < nargs; i++) {
- int is_64bit = sizemask & (1 << (i+1)*2);
- if (TCG_TARGET_REG_BITS < 64 && is_64bit) {
-#ifdef TCG_TARGET_CALL_ALIGN_ARGS
- /* some targets want aligned 64 bit args */
- if (real_args & 1) {
- s->gen_opparam_buf[pi++] = TCG_CALL_DUMMY_ARG;
- real_args++;
- }
-#endif
- /* If stack grows up, then we will be placing successive
- arguments at lower addresses, which means we need to
- reverse the order compared to how we would normally
- treat either big or little-endian. For those arguments
- that will wind up in registers, this still works for
- HPPA (the only current STACK_GROWSUP target) since the
- argument registers are *also* allocated in decreasing
- order. If another such target is added, this logic may
- have to get more complicated to differentiate between
- stack arguments and register arguments. */
-#if defined(HOST_WORDS_BIGENDIAN) != defined(TCG_TARGET_STACK_GROWSUP)
- s->gen_opparam_buf[pi++] = args[i] + 1;
- s->gen_opparam_buf[pi++] = args[i];
-#else
- s->gen_opparam_buf[pi++] = args[i];
- s->gen_opparam_buf[pi++] = args[i] + 1;
-#endif
- real_args += 2;
- continue;
- }
-
- s->gen_opparam_buf[pi++] = args[i];
- real_args++;
- }
- s->gen_opparam_buf[pi++] = (uintptr_t)func;
- s->gen_opparam_buf[pi++] = flags;
-
- i = s->gen_next_op_idx;
- tcg_debug_assert(i < OPC_BUF_SIZE);
- tcg_debug_assert(pi <= OPPARAM_BUF_SIZE);
-
- /* Set links for sequential allocation during translation. */
- s->gen_op_buf[i] = (TCGOp){
- .opc = INDEX_op_call,
- .callo = nb_rets,
- .calli = real_args,
- .args = pi_first,
- .prev = i - 1,
- .next = i + 1
- };
-
- /* Make sure the calli field didn't overflow. */
- tcg_debug_assert(s->gen_op_buf[i].calli == real_args);
-
- s->gen_last_op_idx = i;
- s->gen_next_op_idx = i + 1;
- s->gen_next_parm_idx = pi;
-
-#if defined(__sparc__) && !defined(__arch64__) \
- && !defined(CONFIG_TCG_INTERPRETER)
- /* Free all of the parts we allocated above. */
- for (i = real_args = 0; i < orig_nargs; ++i) {
- int is_64bit = orig_sizemask & (1 << (i+1)*2);
- if (is_64bit) {
- TCGv_i32 h = MAKE_TCGV_I32(args[real_args++]);
- TCGv_i32 l = MAKE_TCGV_I32(args[real_args++]);
- tcg_temp_free_i32(h);
- tcg_temp_free_i32(l);
- } else {
- real_args++;
- }
- }
- if (orig_sizemask & 1) {
- /* The 32-bit ABI returned two 32-bit pieces. Re-assemble them.
- Note that describing these as TCGv_i64 eliminates an unnecessary
- zero-extension that tcg_gen_concat_i32_i64 would create. */
- tcg_gen_concat32_i64(MAKE_TCGV_I64(ret), retl, reth);
- tcg_temp_free_i64(retl);
- tcg_temp_free_i64(reth);
- }
-#elif defined(TCG_TARGET_EXTEND_ARGS) && TCG_TARGET_REG_BITS == 64
- for (i = 0; i < nargs; ++i) {
- int is_64bit = sizemask & (1 << (i+1)*2);
- if (!is_64bit) {
- TCGv_i64 temp = MAKE_TCGV_I64(args[i]);
- tcg_temp_free_i64(temp);
- }
- }
-#endif /* TCG_TARGET_EXTEND_ARGS */
-}
-
-static void tcg_reg_alloc_start(TCGContext *s)
-{
- int i;
- TCGTemp *ts;
- for(i = 0; i < s->nb_globals; i++) {
- ts = &s->temps[i];
- if (ts->fixed_reg) {
- ts->val_type = TEMP_VAL_REG;
- } else {
- ts->val_type = TEMP_VAL_MEM;
- }
- }
- for(i = s->nb_globals; i < s->nb_temps; i++) {
- ts = &s->temps[i];
- if (ts->temp_local) {
- ts->val_type = TEMP_VAL_MEM;
- } else {
- ts->val_type = TEMP_VAL_DEAD;
- }
- ts->mem_allocated = 0;
- ts->fixed_reg = 0;
- }
-
- memset(s->reg_to_temp, 0, sizeof(s->reg_to_temp));
-}
-
-static char *tcg_get_arg_str_ptr(TCGContext *s, char *buf, int buf_size,
- TCGTemp *ts)
-{
- int idx = temp_idx(s, ts);
-
- if (idx < s->nb_globals) {
- pstrcpy(buf, buf_size, ts->name);
- } else if (ts->temp_local) {
- snprintf(buf, buf_size, "loc%d", idx - s->nb_globals);
- } else {
- snprintf(buf, buf_size, "tmp%d", idx - s->nb_globals);
- }
- return buf;
-}
-
-static char *tcg_get_arg_str_idx(TCGContext *s, char *buf,
- int buf_size, int idx)
-{
- tcg_debug_assert(idx >= 0 && idx < s->nb_temps);
- return tcg_get_arg_str_ptr(s, buf, buf_size, &s->temps[idx]);
-}
-
-/* Find helper name. */
-static inline const char *tcg_find_helper(TCGContext *s, uintptr_t val)
-{
- const char *ret = NULL;
- if (s->helpers) {
- TCGHelperInfo *info = g_hash_table_lookup(s->helpers, (gpointer)val);
- if (info) {
- ret = info->name;
- }
- }
- return ret;
-}
-
-static const char * const cond_name[] =
-{
- [TCG_COND_NEVER] = "never",
- [TCG_COND_ALWAYS] = "always",
- [TCG_COND_EQ] = "eq",
- [TCG_COND_NE] = "ne",
- [TCG_COND_LT] = "lt",
- [TCG_COND_GE] = "ge",
- [TCG_COND_LE] = "le",
- [TCG_COND_GT] = "gt",
- [TCG_COND_LTU] = "ltu",
- [TCG_COND_GEU] = "geu",
- [TCG_COND_LEU] = "leu",
- [TCG_COND_GTU] = "gtu"
-};
-
-static const char * const ldst_name[] =
-{
- [MO_UB] = "ub",
- [MO_SB] = "sb",
- [MO_LEUW] = "leuw",
- [MO_LESW] = "lesw",
- [MO_LEUL] = "leul",
- [MO_LESL] = "lesl",
- [MO_LEQ] = "leq",
- [MO_BEUW] = "beuw",
- [MO_BESW] = "besw",
- [MO_BEUL] = "beul",
- [MO_BESL] = "besl",
- [MO_BEQ] = "beq",
-};
-
-void tcg_dump_ops(TCGContext *s)
-{
- char buf[128];
- TCGOp *op;
- int oi;
-
- for (oi = s->gen_first_op_idx; oi >= 0; oi = op->next) {
- int i, k, nb_oargs, nb_iargs, nb_cargs;
- const TCGOpDef *def;
- const TCGArg *args;
- TCGOpcode c;
-
- op = &s->gen_op_buf[oi];
- c = op->opc;
- def = &tcg_op_defs[c];
- args = &s->gen_opparam_buf[op->args];
-
- if (c == INDEX_op_insn_start) {
- qemu_log("%s ----", oi != s->gen_first_op_idx ? "\n" : "");
-
- for (i = 0; i < TARGET_INSN_START_WORDS; ++i) {
- target_ulong a;
-#if TARGET_LONG_BITS > TCG_TARGET_REG_BITS
- a = ((target_ulong)args[i * 2 + 1] << 32) | args[i * 2];
-#else
- a = args[i];
-#endif
- qemu_log(" " TARGET_FMT_lx, a);
- }
- } else if (c == INDEX_op_call) {
- /* variable number of arguments */
- nb_oargs = op->callo;
- nb_iargs = op->calli;
- nb_cargs = def->nb_cargs;
-
- /* function name, flags, out args */
- qemu_log(" %s %s,$0x%" TCG_PRIlx ",$%d", def->name,
- tcg_find_helper(s, args[nb_oargs + nb_iargs]),
- args[nb_oargs + nb_iargs + 1], nb_oargs);
- for (i = 0; i < nb_oargs; i++) {
- qemu_log(",%s", tcg_get_arg_str_idx(s, buf, sizeof(buf),
- args[i]));
- }
- for (i = 0; i < nb_iargs; i++) {
- TCGArg arg = args[nb_oargs + i];
- const char *t = "<dummy>";
- if (arg != TCG_CALL_DUMMY_ARG) {
- t = tcg_get_arg_str_idx(s, buf, sizeof(buf), arg);
- }
- qemu_log(",%s", t);
- }
- } else {
- qemu_log(" %s ", def->name);
-
- nb_oargs = def->nb_oargs;
- nb_iargs = def->nb_iargs;
- nb_cargs = def->nb_cargs;
-
- k = 0;
- for (i = 0; i < nb_oargs; i++) {
- if (k != 0) {
- qemu_log(",");
- }
- qemu_log("%s", tcg_get_arg_str_idx(s, buf, sizeof(buf),
- args[k++]));
- }
- for (i = 0; i < nb_iargs; i++) {
- if (k != 0) {
- qemu_log(",");
- }
- qemu_log("%s", tcg_get_arg_str_idx(s, buf, sizeof(buf),
- args[k++]));
- }
- switch (c) {
- case INDEX_op_brcond_i32:
- case INDEX_op_setcond_i32:
- case INDEX_op_movcond_i32:
- case INDEX_op_brcond2_i32:
- case INDEX_op_setcond2_i32:
- case INDEX_op_brcond_i64:
- case INDEX_op_setcond_i64:
- case INDEX_op_movcond_i64:
- if (args[k] < ARRAY_SIZE(cond_name) && cond_name[args[k]]) {
- qemu_log(",%s", cond_name[args[k++]]);
- } else {
- qemu_log(",$0x%" TCG_PRIlx, args[k++]);
- }
- i = 1;
- break;
- case INDEX_op_qemu_ld_i32:
- case INDEX_op_qemu_st_i32:
- case INDEX_op_qemu_ld_i64:
- case INDEX_op_qemu_st_i64:
- {
- TCGMemOpIdx oi = args[k++];
- TCGMemOp op = get_memop(oi);
- unsigned ix = get_mmuidx(oi);
-
- if (op & ~(MO_AMASK | MO_BSWAP | MO_SSIZE)) {
- qemu_log(",$0x%x,%u", op, ix);
- } else {
- const char *s_al = "", *s_op;
- if (op & MO_AMASK) {
- if ((op & MO_AMASK) == MO_ALIGN) {
- s_al = "al+";
- } else {
- s_al = "un+";
- }
- }
- s_op = ldst_name[op & (MO_BSWAP | MO_SSIZE)];
- qemu_log(",%s%s,%u", s_al, s_op, ix);
- }
- i = 1;
- }
- break;
- default:
- i = 0;
- break;
- }
- switch (c) {
- case INDEX_op_set_label:
- case INDEX_op_br:
- case INDEX_op_brcond_i32:
- case INDEX_op_brcond_i64:
- case INDEX_op_brcond2_i32:
- qemu_log("%s$L%d", k ? "," : "", arg_label(args[k])->id);
- i++, k++;
- break;
- default:
- break;
- }
- for (; i < nb_cargs; i++, k++) {
- qemu_log("%s$0x%" TCG_PRIlx, k ? "," : "", args[k]);
- }
- }
- qemu_log("\n");
- }
-}
-
-/* we give more priority to constraints with less registers */
-static int get_constraint_priority(const TCGOpDef *def, int k)
-{
- const TCGArgConstraint *arg_ct;
-
- int i, n;
- arg_ct = &def->args_ct[k];
- if (arg_ct->ct & TCG_CT_ALIAS) {
- /* an alias is equivalent to a single register */
- n = 1;
- } else {
- if (!(arg_ct->ct & TCG_CT_REG))
- return 0;
- n = 0;
- for(i = 0; i < TCG_TARGET_NB_REGS; i++) {
- if (tcg_regset_test_reg(arg_ct->u.regs, i))
- n++;
- }
- }
- return TCG_TARGET_NB_REGS - n + 1;
-}
-
-/* sort from highest priority to lowest */
-static void sort_constraints(TCGOpDef *def, int start, int n)
-{
- int i, j, p1, p2, tmp;
-
- for(i = 0; i < n; i++)
- def->sorted_args[start + i] = start + i;
- if (n <= 1)
- return;
- for(i = 0; i < n - 1; i++) {
- for(j = i + 1; j < n; j++) {
- p1 = get_constraint_priority(def, def->sorted_args[start + i]);
- p2 = get_constraint_priority(def, def->sorted_args[start + j]);
- if (p1 < p2) {
- tmp = def->sorted_args[start + i];
- def->sorted_args[start + i] = def->sorted_args[start + j];
- def->sorted_args[start + j] = tmp;
- }
- }
- }
-}
-
-void tcg_add_target_add_op_defs(const TCGTargetOpDef *tdefs)
-{
- TCGOpcode op;
- TCGOpDef *def;
- const char *ct_str;
- int i, nb_args;
-
- for(;;) {
- if (tdefs->op == (TCGOpcode)-1)
- break;
- op = tdefs->op;
- tcg_debug_assert((unsigned)op < NB_OPS);
- def = &tcg_op_defs[op];
-#if defined(CONFIG_DEBUG_TCG)
- /* Duplicate entry in op definitions? */
- tcg_debug_assert(!def->used);
- def->used = 1;
-#endif
- nb_args = def->nb_iargs + def->nb_oargs;
- for(i = 0; i < nb_args; i++) {
- ct_str = tdefs->args_ct_str[i];
- /* Incomplete TCGTargetOpDef entry? */
- tcg_debug_assert(ct_str != NULL);
- tcg_regset_clear(def->args_ct[i].u.regs);
- def->args_ct[i].ct = 0;
- if (ct_str[0] >= '0' && ct_str[0] <= '9') {
- int oarg;
- oarg = ct_str[0] - '0';
- tcg_debug_assert(oarg < def->nb_oargs);
- tcg_debug_assert(def->args_ct[oarg].ct & TCG_CT_REG);
- /* TCG_CT_ALIAS is for the output arguments. The input
- argument is tagged with TCG_CT_IALIAS. */
- def->args_ct[i] = def->args_ct[oarg];
- def->args_ct[oarg].ct = TCG_CT_ALIAS;
- def->args_ct[oarg].alias_index = i;
- def->args_ct[i].ct |= TCG_CT_IALIAS;
- def->args_ct[i].alias_index = oarg;
- } else {
- for(;;) {
- if (*ct_str == '\0')
- break;
- switch(*ct_str) {
- case 'i':
- def->args_ct[i].ct |= TCG_CT_CONST;
- ct_str++;
- break;
- default:
- if (target_parse_constraint(&def->args_ct[i], &ct_str) < 0) {
- fprintf(stderr, "Invalid constraint '%s' for arg %d of operation '%s'\n",
- ct_str, i, def->name);
- exit(1);
- }
- }
- }
- }
- }
-
- /* TCGTargetOpDef entry with too much information? */
- tcg_debug_assert(i == TCG_MAX_OP_ARGS || tdefs->args_ct_str[i] == NULL);
-
- /* sort the constraints (XXX: this is just an heuristic) */
- sort_constraints(def, 0, def->nb_oargs);
- sort_constraints(def, def->nb_oargs, def->nb_iargs);
-
-#if 0
- {
- int i;
-
- printf("%s: sorted=", def->name);
- for(i = 0; i < def->nb_oargs + def->nb_iargs; i++)
- printf(" %d", def->sorted_args[i]);
- printf("\n");
- }
-#endif
- tdefs++;
- }
-
-#if defined(CONFIG_DEBUG_TCG)
- i = 0;
- for (op = 0; op < tcg_op_defs_max; op++) {
- const TCGOpDef *def = &tcg_op_defs[op];
- if (def->flags & TCG_OPF_NOT_PRESENT) {
- /* Wrong entry in op definitions? */
- if (def->used) {
- fprintf(stderr, "Invalid op definition for %s\n", def->name);
- i = 1;
- }
- } else {
- /* Missing entry in op definitions? */
- if (!def->used) {
- fprintf(stderr, "Missing op definition for %s\n", def->name);
- i = 1;
- }
- }
- }
- if (i == 1) {
- tcg_abort();
- }
-#endif
-}
-
-void tcg_op_remove(TCGContext *s, TCGOp *op)
-{
- int next = op->next;
- int prev = op->prev;
-
- if (next >= 0) {
- s->gen_op_buf[next].prev = prev;
- } else {
- s->gen_last_op_idx = prev;
- }
- if (prev >= 0) {
- s->gen_op_buf[prev].next = next;
- } else {
- s->gen_first_op_idx = next;
- }
-
- memset(op, -1, sizeof(*op));
-
-#ifdef CONFIG_PROFILER
- s->del_op_count++;
-#endif
-}
-
-#ifdef USE_LIVENESS_ANALYSIS
-/* liveness analysis: end of function: all temps are dead, and globals
- should be in memory. */
-static inline void tcg_la_func_end(TCGContext *s, uint8_t *dead_temps,
- uint8_t *mem_temps)
-{
- memset(dead_temps, 1, s->nb_temps);
- memset(mem_temps, 1, s->nb_globals);
- memset(mem_temps + s->nb_globals, 0, s->nb_temps - s->nb_globals);
-}
-
-/* liveness analysis: end of basic block: all temps are dead, globals
- and local temps should be in memory. */
-static inline void tcg_la_bb_end(TCGContext *s, uint8_t *dead_temps,
- uint8_t *mem_temps)
-{
- int i;
-
- memset(dead_temps, 1, s->nb_temps);
- memset(mem_temps, 1, s->nb_globals);
- for(i = s->nb_globals; i < s->nb_temps; i++) {
- mem_temps[i] = s->temps[i].temp_local;
- }
-}
-
-/* Liveness analysis : update the opc_dead_args array to tell if a
- given input arguments is dead. Instructions updating dead
- temporaries are removed. */
-static void tcg_liveness_analysis(TCGContext *s)
-{
- uint8_t *dead_temps, *mem_temps;
- int oi, oi_prev, nb_ops;
-
- nb_ops = s->gen_next_op_idx;
- s->op_dead_args = tcg_malloc(nb_ops * sizeof(uint16_t));
- s->op_sync_args = tcg_malloc(nb_ops * sizeof(uint8_t));
-
- dead_temps = tcg_malloc(s->nb_temps);
- mem_temps = tcg_malloc(s->nb_temps);
- tcg_la_func_end(s, dead_temps, mem_temps);
-
- for (oi = s->gen_last_op_idx; oi >= 0; oi = oi_prev) {
- int i, nb_iargs, nb_oargs;
- TCGOpcode opc_new, opc_new2;
- bool have_opc_new2;
- uint16_t dead_args;
- uint8_t sync_args;
- TCGArg arg;
-
- TCGOp * const op = &s->gen_op_buf[oi];
- TCGArg * const args = &s->gen_opparam_buf[op->args];
- TCGOpcode opc = op->opc;
- const TCGOpDef *def = &tcg_op_defs[opc];
-
- oi_prev = op->prev;
-
- switch (opc) {
- case INDEX_op_call:
- {
- int call_flags;
-
- nb_oargs = op->callo;
- nb_iargs = op->calli;
- call_flags = args[nb_oargs + nb_iargs + 1];
-
- /* pure functions can be removed if their result is unused */
- if (call_flags & TCG_CALL_NO_SIDE_EFFECTS) {
- for (i = 0; i < nb_oargs; i++) {
- arg = args[i];
- if (!dead_temps[arg] || mem_temps[arg]) {
- goto do_not_remove_call;
- }
- }
- goto do_remove;
- } else {
- do_not_remove_call:
-
- /* output args are dead */
- dead_args = 0;
- sync_args = 0;
- for (i = 0; i < nb_oargs; i++) {
- arg = args[i];
- if (dead_temps[arg]) {
- dead_args |= (1 << i);
- }
- if (mem_temps[arg]) {
- sync_args |= (1 << i);
- }
- dead_temps[arg] = 1;
- mem_temps[arg] = 0;
- }
-
- if (!(call_flags & TCG_CALL_NO_READ_GLOBALS)) {
- /* globals should be synced to memory */
- memset(mem_temps, 1, s->nb_globals);
- }
- if (!(call_flags & (TCG_CALL_NO_WRITE_GLOBALS |
- TCG_CALL_NO_READ_GLOBALS))) {
- /* globals should go back to memory */
- memset(dead_temps, 1, s->nb_globals);
- }
-
- /* record arguments that die in this helper */
- for (i = nb_oargs; i < nb_iargs + nb_oargs; i++) {
- arg = args[i];
- if (arg != TCG_CALL_DUMMY_ARG) {
- if (dead_temps[arg]) {
- dead_args |= (1 << i);
- }
- }
- }
- /* input arguments are live for preceding opcodes */
- for (i = nb_oargs; i < nb_oargs + nb_iargs; i++) {
- arg = args[i];
- dead_temps[arg] = 0;
- }
- s->op_dead_args[oi] = dead_args;
- s->op_sync_args[oi] = sync_args;
- }
- }
- break;
- case INDEX_op_insn_start:
- break;
- case INDEX_op_discard:
- /* mark the temporary as dead */
- dead_temps[args[0]] = 1;
- mem_temps[args[0]] = 0;
- break;
-
- case INDEX_op_add2_i32:
- opc_new = INDEX_op_add_i32;
- goto do_addsub2;
- case INDEX_op_sub2_i32:
- opc_new = INDEX_op_sub_i32;
- goto do_addsub2;
- case INDEX_op_add2_i64:
- opc_new = INDEX_op_add_i64;
- goto do_addsub2;
- case INDEX_op_sub2_i64:
- opc_new = INDEX_op_sub_i64;
- do_addsub2:
- nb_iargs = 4;
- nb_oargs = 2;
- /* Test if the high part of the operation is dead, but not
- the low part. The result can be optimized to a simple
- add or sub. This happens often for x86_64 guest when the
- cpu mode is set to 32 bit. */
- if (dead_temps[args[1]] && !mem_temps[args[1]]) {
- if (dead_temps[args[0]] && !mem_temps[args[0]]) {
- goto do_remove;
- }
- /* Replace the opcode and adjust the args in place,
- leaving 3 unused args at the end. */
- op->opc = opc = opc_new;
- args[1] = args[2];
- args[2] = args[4];
- /* Fall through and mark the single-word operation live. */
- nb_iargs = 2;
- nb_oargs = 1;
- }
- goto do_not_remove;
-
- case INDEX_op_mulu2_i32:
- opc_new = INDEX_op_mul_i32;
- opc_new2 = INDEX_op_muluh_i32;
- have_opc_new2 = TCG_TARGET_HAS_muluh_i32;
- goto do_mul2;
- case INDEX_op_muls2_i32:
- opc_new = INDEX_op_mul_i32;
- opc_new2 = INDEX_op_mulsh_i32;
- have_opc_new2 = TCG_TARGET_HAS_mulsh_i32;
- goto do_mul2;
- case INDEX_op_mulu2_i64:
- opc_new = INDEX_op_mul_i64;
- opc_new2 = INDEX_op_muluh_i64;
- have_opc_new2 = TCG_TARGET_HAS_muluh_i64;
- goto do_mul2;
- case INDEX_op_muls2_i64:
- opc_new = INDEX_op_mul_i64;
- opc_new2 = INDEX_op_mulsh_i64;
- have_opc_new2 = TCG_TARGET_HAS_mulsh_i64;
- goto do_mul2;
- do_mul2:
- nb_iargs = 2;
- nb_oargs = 2;
- if (dead_temps[args[1]] && !mem_temps[args[1]]) {
- if (dead_temps[args[0]] && !mem_temps[args[0]]) {
- /* Both parts of the operation are dead. */
- goto do_remove;
- }
- /* The high part of the operation is dead; generate the low. */
- op->opc = opc = opc_new;
- args[1] = args[2];
- args[2] = args[3];
- } else if (have_opc_new2 && dead_temps[args[0]]
- && !mem_temps[args[0]]) {
- /* The low part of the operation is dead; generate the high. */
- op->opc = opc = opc_new2;
- args[0] = args[1];
- args[1] = args[2];
- args[2] = args[3];
- } else {
- goto do_not_remove;
- }
- /* Mark the single-word operation live. */
- nb_oargs = 1;
- goto do_not_remove;
-
- default:
- /* XXX: optimize by hardcoding common cases (e.g. triadic ops) */
- nb_iargs = def->nb_iargs;
- nb_oargs = def->nb_oargs;
-
- /* Test if the operation can be removed because all
- its outputs are dead. We assume that nb_oargs == 0
- implies side effects */
- if (!(def->flags & TCG_OPF_SIDE_EFFECTS) && nb_oargs != 0) {
- for (i = 0; i < nb_oargs; i++) {
- arg = args[i];
- if (!dead_temps[arg] || mem_temps[arg]) {
- goto do_not_remove;
- }
- }
- do_remove:
- tcg_op_remove(s, op);
- } else {
- do_not_remove:
- /* output args are dead */
- dead_args = 0;
- sync_args = 0;
- for (i = 0; i < nb_oargs; i++) {
- arg = args[i];
- if (dead_temps[arg]) {
- dead_args |= (1 << i);
- }
- if (mem_temps[arg]) {
- sync_args |= (1 << i);
- }
- dead_temps[arg] = 1;
- mem_temps[arg] = 0;
- }
-
- /* if end of basic block, update */
- if (def->flags & TCG_OPF_BB_END) {
- tcg_la_bb_end(s, dead_temps, mem_temps);
- } else if (def->flags & TCG_OPF_SIDE_EFFECTS) {
- /* globals should be synced to memory */
- memset(mem_temps, 1, s->nb_globals);
- }
-
- /* record arguments that die in this opcode */
- for (i = nb_oargs; i < nb_oargs + nb_iargs; i++) {
- arg = args[i];
- if (dead_temps[arg]) {
- dead_args |= (1 << i);
- }
- }
- /* input arguments are live for preceding opcodes */
- for (i = nb_oargs; i < nb_oargs + nb_iargs; i++) {
- arg = args[i];
- dead_temps[arg] = 0;
- }
- s->op_dead_args[oi] = dead_args;
- s->op_sync_args[oi] = sync_args;
- }
- break;
- }
- }
-}
-#else
-/* dummy liveness analysis */
-static void tcg_liveness_analysis(TCGContext *s)
-{
- int nb_ops = s->gen_next_op_idx;
-
- s->op_dead_args = tcg_malloc(nb_ops * sizeof(uint16_t));
- memset(s->op_dead_args, 0, nb_ops * sizeof(uint16_t));
- s->op_sync_args = tcg_malloc(nb_ops * sizeof(uint8_t));
- memset(s->op_sync_args, 0, nb_ops * sizeof(uint8_t));
-}
-#endif
-
-#ifdef CONFIG_DEBUG_TCG
-static void dump_regs(TCGContext *s)
-{
- TCGTemp *ts;
- int i;
- char buf[64];
-
- for(i = 0; i < s->nb_temps; i++) {
- ts = &s->temps[i];
- printf(" %10s: ", tcg_get_arg_str_idx(s, buf, sizeof(buf), i));
- switch(ts->val_type) {
- case TEMP_VAL_REG:
- printf("%s", tcg_target_reg_names[ts->reg]);
- break;
- case TEMP_VAL_MEM:
- printf("%d(%s)", (int)ts->mem_offset,
- tcg_target_reg_names[ts->mem_base->reg]);
- break;
- case TEMP_VAL_CONST:
- printf("$0x%" TCG_PRIlx, ts->val);
- break;
- case TEMP_VAL_DEAD:
- printf("D");
- break;
- default:
- printf("???");
- break;
- }
- printf("\n");
- }
-
- for(i = 0; i < TCG_TARGET_NB_REGS; i++) {
- if (s->reg_to_temp[i] != NULL) {
- printf("%s: %s\n",
- tcg_target_reg_names[i],
- tcg_get_arg_str_ptr(s, buf, sizeof(buf), s->reg_to_temp[i]));
- }
- }
-}
-
-static void check_regs(TCGContext *s)
-{
- int reg;
- int k;
- TCGTemp *ts;
- char buf[64];
-
- for (reg = 0; reg < TCG_TARGET_NB_REGS; reg++) {
- ts = s->reg_to_temp[reg];
- if (ts != NULL) {
- if (ts->val_type != TEMP_VAL_REG || ts->reg != reg) {
- printf("Inconsistency for register %s:\n",
- tcg_target_reg_names[reg]);
- goto fail;
- }
- }
- }
- for (k = 0; k < s->nb_temps; k++) {
- ts = &s->temps[k];
- if (ts->val_type == TEMP_VAL_REG && !ts->fixed_reg
- && s->reg_to_temp[ts->reg] != ts) {
- printf("Inconsistency for temp %s:\n",
- tcg_get_arg_str_ptr(s, buf, sizeof(buf), ts));
- fail:
- printf("reg state:\n");
- dump_regs(s);
- tcg_abort();
- }
- }
-}
-#endif
-
-static void temp_allocate_frame(TCGContext *s, int temp)
-{
- TCGTemp *ts;
- ts = &s->temps[temp];
-#if !(defined(__sparc__) && TCG_TARGET_REG_BITS == 64)
- /* Sparc64 stack is accessed with offset of 2047 */
- s->current_frame_offset = (s->current_frame_offset +
- (tcg_target_long)sizeof(tcg_target_long) - 1) &
- ~(sizeof(tcg_target_long) - 1);
-#endif
- if (s->current_frame_offset + (tcg_target_long)sizeof(tcg_target_long) >
- s->frame_end) {
- tcg_abort();
- }
- ts->mem_offset = s->current_frame_offset;
- ts->mem_base = s->frame_temp;
- ts->mem_allocated = 1;
- s->current_frame_offset += sizeof(tcg_target_long);
-}
-
-static void temp_load(TCGContext *, TCGTemp *, TCGRegSet, TCGRegSet);
-
-/* sync register 'reg' by saving it to the corresponding temporary */
-static void tcg_reg_sync(TCGContext *s, TCGReg reg, TCGRegSet allocated_regs)
-{
- TCGTemp *ts = s->reg_to_temp[reg];
-
- tcg_debug_assert(ts->val_type == TEMP_VAL_REG);
- if (!ts->mem_coherent && !ts->fixed_reg) {
- if (!ts->mem_allocated) {
- temp_allocate_frame(s, temp_idx(s, ts));
- } else if (ts->indirect_reg) {
- tcg_regset_set_reg(allocated_regs, ts->reg);
- temp_load(s, ts->mem_base,
- tcg_target_available_regs[TCG_TYPE_PTR],
- allocated_regs);
- }
- tcg_out_st(s, ts->type, reg, ts->mem_base->reg, ts->mem_offset);
- }
- ts->mem_coherent = 1;
-}
-
-/* free register 'reg' by spilling the corresponding temporary if necessary */
-static void tcg_reg_free(TCGContext *s, TCGReg reg, TCGRegSet allocated_regs)
-{
- TCGTemp *ts = s->reg_to_temp[reg];
-
- if (ts != NULL) {
- tcg_reg_sync(s, reg, allocated_regs);
- ts->val_type = TEMP_VAL_MEM;
- s->reg_to_temp[reg] = NULL;
- }
-}
-
-/* Allocate a register belonging to reg1 & ~reg2 */
-static TCGReg tcg_reg_alloc(TCGContext *s, TCGRegSet desired_regs,
- TCGRegSet allocated_regs, bool rev)
-{
- int i, n = ARRAY_SIZE(tcg_target_reg_alloc_order);
- const int *order;
- TCGReg reg;
- TCGRegSet reg_ct;
-
- tcg_regset_andnot(reg_ct, desired_regs, allocated_regs);
- order = rev ? indirect_reg_alloc_order : tcg_target_reg_alloc_order;
-
- /* first try free registers */
- for(i = 0; i < n; i++) {
- reg = order[i];
- if (tcg_regset_test_reg(reg_ct, reg) && s->reg_to_temp[reg] == NULL)
- return reg;
- }
-
- /* XXX: do better spill choice */
- for(i = 0; i < n; i++) {
- reg = order[i];
- if (tcg_regset_test_reg(reg_ct, reg)) {
- tcg_reg_free(s, reg, allocated_regs);
- return reg;
- }
- }
-
- tcg_abort();
-}
-
-/* Make sure the temporary is in a register. If needed, allocate the register
- from DESIRED while avoiding ALLOCATED. */
-static void temp_load(TCGContext *s, TCGTemp *ts, TCGRegSet desired_regs,
- TCGRegSet allocated_regs)
-{
- TCGReg reg;
-
- switch (ts->val_type) {
- case TEMP_VAL_REG:
- return;
- case TEMP_VAL_CONST:
- reg = tcg_reg_alloc(s, desired_regs, allocated_regs, ts->indirect_base);
- tcg_out_movi(s, ts->type, reg, ts->val);
- ts->mem_coherent = 0;
- break;
- case TEMP_VAL_MEM:
- reg = tcg_reg_alloc(s, desired_regs, allocated_regs, ts->indirect_base);
- if (ts->indirect_reg) {
- tcg_regset_set_reg(allocated_regs, reg);
- temp_load(s, ts->mem_base,
- tcg_target_available_regs[TCG_TYPE_PTR],
- allocated_regs);
- }
- tcg_out_ld(s, ts->type, reg, ts->mem_base->reg, ts->mem_offset);
- ts->mem_coherent = 1;
- break;
- case TEMP_VAL_DEAD:
- default:
- tcg_abort();
- }
- ts->reg = reg;
- ts->val_type = TEMP_VAL_REG;
- s->reg_to_temp[reg] = ts;
-}
-
-/* mark a temporary as dead. */
-static inline void temp_dead(TCGContext *s, TCGTemp *ts)
-{
- if (ts->fixed_reg) {
- return;
- }
- if (ts->val_type == TEMP_VAL_REG) {
- s->reg_to_temp[ts->reg] = NULL;
- }
- ts->val_type = (temp_idx(s, ts) < s->nb_globals || ts->temp_local
- ? TEMP_VAL_MEM : TEMP_VAL_DEAD);
-}
-
-/* sync a temporary to memory. 'allocated_regs' is used in case a
- temporary registers needs to be allocated to store a constant. */
-static void temp_sync(TCGContext *s, TCGTemp *ts, TCGRegSet allocated_regs)
-{
- if (ts->fixed_reg) {
- return;
- }
- switch (ts->val_type) {
- case TEMP_VAL_CONST:
- temp_load(s, ts, tcg_target_available_regs[ts->type], allocated_regs);
- /* fallthrough */
- case TEMP_VAL_REG:
- tcg_reg_sync(s, ts->reg, allocated_regs);
- break;
- case TEMP_VAL_DEAD:
- case TEMP_VAL_MEM:
- break;
- default:
- tcg_abort();
- }
-}
-
-/* save a temporary to memory. 'allocated_regs' is used in case a
- temporary registers needs to be allocated to store a constant. */
-static inline void temp_save(TCGContext *s, TCGTemp *ts,
- TCGRegSet allocated_regs)
-{
-#ifdef USE_LIVENESS_ANALYSIS
- /* ??? Liveness does not yet incorporate indirect bases. */
- if (!ts->indirect_base) {
- /* The liveness analysis already ensures that globals are back
- in memory. Keep an tcg_debug_assert for safety. */
- tcg_debug_assert(ts->val_type == TEMP_VAL_MEM || ts->fixed_reg);
- return;
- }
-#endif
- temp_sync(s, ts, allocated_regs);
- temp_dead(s, ts);
-}
-
-/* save globals to their canonical location and assume they can be
- modified be the following code. 'allocated_regs' is used in case a
- temporary registers needs to be allocated to store a constant. */
-static void save_globals(TCGContext *s, TCGRegSet allocated_regs)
-{
- int i;
-
- for (i = 0; i < s->nb_globals; i++) {
- temp_save(s, &s->temps[i], allocated_regs);
- }
-}
-
-/* sync globals to their canonical location and assume they can be
- read by the following code. 'allocated_regs' is used in case a
- temporary registers needs to be allocated to store a constant. */
-static void sync_globals(TCGContext *s, TCGRegSet allocated_regs)
-{
- int i;
-
- for (i = 0; i < s->nb_globals; i++) {
- TCGTemp *ts = &s->temps[i];
-#ifdef USE_LIVENESS_ANALYSIS
- /* ??? Liveness does not yet incorporate indirect bases. */
- if (!ts->indirect_base) {
- tcg_debug_assert(ts->val_type != TEMP_VAL_REG
- || ts->fixed_reg
- || ts->mem_coherent);
- continue;
- }
-#endif
- temp_sync(s, ts, allocated_regs);
- }
-}
-
-/* at the end of a basic block, we assume all temporaries are dead and
- all globals are stored at their canonical location. */
-static void tcg_reg_alloc_bb_end(TCGContext *s, TCGRegSet allocated_regs)
-{
- int i;
-
- for (i = s->nb_globals; i < s->nb_temps; i++) {
- TCGTemp *ts = &s->temps[i];
- if (ts->temp_local) {
- temp_save(s, ts, allocated_regs);
- } else {
-#ifdef USE_LIVENESS_ANALYSIS
- /* ??? Liveness does not yet incorporate indirect bases. */
- if (!ts->indirect_base) {
- /* The liveness analysis already ensures that temps are dead.
- Keep an tcg_debug_assert for safety. */
- tcg_debug_assert(ts->val_type == TEMP_VAL_DEAD);
- continue;
- }
-#endif
- temp_dead(s, ts);
- }
- }
-
- save_globals(s, allocated_regs);
-}
-
-#define IS_DEAD_ARG(n) ((dead_args >> (n)) & 1)
-#define NEED_SYNC_ARG(n) ((sync_args >> (n)) & 1)
-
-static void tcg_reg_alloc_movi(TCGContext *s, const TCGArg *args,
- uint16_t dead_args, uint8_t sync_args)
-{
- TCGTemp *ots;
- tcg_target_ulong val;
-
- ots = &s->temps[args[0]];
- val = args[1];
-
- if (ots->fixed_reg) {
- /* for fixed registers, we do not do any constant
- propagation */
- tcg_out_movi(s, ots->type, ots->reg, val);
- } else {
- /* The movi is not explicitly generated here */
- if (ots->val_type == TEMP_VAL_REG) {
- s->reg_to_temp[ots->reg] = NULL;
- }
- ots->val_type = TEMP_VAL_CONST;
- ots->val = val;
- }
- if (NEED_SYNC_ARG(0)) {
- temp_sync(s, ots, s->reserved_regs);
- }
- if (IS_DEAD_ARG(0)) {
- temp_dead(s, ots);
- }
-}
-
-static void tcg_reg_alloc_mov(TCGContext *s, const TCGOpDef *def,
- const TCGArg *args, uint16_t dead_args,
- uint8_t sync_args)
-{
- TCGRegSet allocated_regs;
- TCGTemp *ts, *ots;
- TCGType otype, itype;
-
- tcg_regset_set(allocated_regs, s->reserved_regs);
- ots = &s->temps[args[0]];
- ts = &s->temps[args[1]];
-
- /* Note that otype != itype for no-op truncation. */
- otype = ots->type;
- itype = ts->type;
-
- /* If the source value is not in a register, and we're going to be
- forced to have it in a register in order to perform the copy,
- then copy the SOURCE value into its own register first. That way
- we don't have to reload SOURCE the next time it is used. */
- if (((NEED_SYNC_ARG(0) || ots->fixed_reg) && ts->val_type != TEMP_VAL_REG)
- || ts->val_type == TEMP_VAL_MEM) {
- temp_load(s, ts, tcg_target_available_regs[itype], allocated_regs);
- }
-
- if (IS_DEAD_ARG(0) && !ots->fixed_reg) {
- /* mov to a non-saved dead register makes no sense (even with
- liveness analysis disabled). */
- tcg_debug_assert(NEED_SYNC_ARG(0));
- /* The code above should have moved the temp to a register. */
- tcg_debug_assert(ts->val_type == TEMP_VAL_REG);
- if (!ots->mem_allocated) {
- temp_allocate_frame(s, args[0]);
- }
- if (ots->indirect_reg) {
- tcg_regset_set_reg(allocated_regs, ts->reg);
- temp_load(s, ots->mem_base,
- tcg_target_available_regs[TCG_TYPE_PTR],
- allocated_regs);
- }
- tcg_out_st(s, otype, ts->reg, ots->mem_base->reg, ots->mem_offset);
- if (IS_DEAD_ARG(1)) {
- temp_dead(s, ts);
- }
- temp_dead(s, ots);
- } else if (ts->val_type == TEMP_VAL_CONST) {
- /* propagate constant */
- if (ots->val_type == TEMP_VAL_REG) {
- s->reg_to_temp[ots->reg] = NULL;
- }
- ots->val_type = TEMP_VAL_CONST;
- ots->val = ts->val;
- if (IS_DEAD_ARG(1)) {
- temp_dead(s, ts);
- }
- } else {
- /* The code in the first if block should have moved the
- temp to a register. */
- tcg_debug_assert(ts->val_type == TEMP_VAL_REG);
- if (IS_DEAD_ARG(1) && !ts->fixed_reg && !ots->fixed_reg) {
- /* the mov can be suppressed */
- if (ots->val_type == TEMP_VAL_REG) {
- s->reg_to_temp[ots->reg] = NULL;
- }
- ots->reg = ts->reg;
- temp_dead(s, ts);
- } else {
- if (ots->val_type != TEMP_VAL_REG) {
- /* When allocating a new register, make sure to not spill the
- input one. */
- tcg_regset_set_reg(allocated_regs, ts->reg);
- ots->reg = tcg_reg_alloc(s, tcg_target_available_regs[otype],
- allocated_regs, ots->indirect_base);
- }
- tcg_out_mov(s, otype, ots->reg, ts->reg);
- }
- ots->val_type = TEMP_VAL_REG;
- ots->mem_coherent = 0;
- s->reg_to_temp[ots->reg] = ots;
- if (NEED_SYNC_ARG(0)) {
- tcg_reg_sync(s, ots->reg, allocated_regs);
- }
- }
-}
-
-static void tcg_reg_alloc_op(TCGContext *s,
- const TCGOpDef *def, TCGOpcode opc,
- const TCGArg *args, uint16_t dead_args,
- uint8_t sync_args)
-{
- TCGRegSet allocated_regs;
- int i, k, nb_iargs, nb_oargs;
- TCGReg reg;
- TCGArg arg;
- const TCGArgConstraint *arg_ct;
- TCGTemp *ts;
- TCGArg new_args[TCG_MAX_OP_ARGS];
- int const_args[TCG_MAX_OP_ARGS];
-
- nb_oargs = def->nb_oargs;
- nb_iargs = def->nb_iargs;
-
- /* copy constants */
- memcpy(new_args + nb_oargs + nb_iargs,
- args + nb_oargs + nb_iargs,
- sizeof(TCGArg) * def->nb_cargs);
-
- /* satisfy input constraints */
- tcg_regset_set(allocated_regs, s->reserved_regs);
- for(k = 0; k < nb_iargs; k++) {
- i = def->sorted_args[nb_oargs + k];
- arg = args[i];
- arg_ct = &def->args_ct[i];
- ts = &s->temps[arg];
-
- if (ts->val_type == TEMP_VAL_CONST
- && tcg_target_const_match(ts->val, ts->type, arg_ct)) {
- /* constant is OK for instruction */
- const_args[i] = 1;
- new_args[i] = ts->val;
- goto iarg_end;
- }
-
- temp_load(s, ts, arg_ct->u.regs, allocated_regs);
-
- if (arg_ct->ct & TCG_CT_IALIAS) {
- if (ts->fixed_reg) {
- /* if fixed register, we must allocate a new register
- if the alias is not the same register */
- if (arg != args[arg_ct->alias_index])
- goto allocate_in_reg;
- } else {
- /* if the input is aliased to an output and if it is
- not dead after the instruction, we must allocate
- a new register and move it */
- if (!IS_DEAD_ARG(i)) {
- goto allocate_in_reg;
- }
- /* check if the current register has already been allocated
- for another input aliased to an output */
- int k2, i2;
- for (k2 = 0 ; k2 < k ; k2++) {
- i2 = def->sorted_args[nb_oargs + k2];
- if ((def->args_ct[i2].ct & TCG_CT_IALIAS) &&
- (new_args[i2] == ts->reg)) {
- goto allocate_in_reg;
- }
- }
- }
- }
- reg = ts->reg;
- if (tcg_regset_test_reg(arg_ct->u.regs, reg)) {
- /* nothing to do : the constraint is satisfied */
- } else {
- allocate_in_reg:
- /* allocate a new register matching the constraint
- and move the temporary register into it */
- reg = tcg_reg_alloc(s, arg_ct->u.regs, allocated_regs,
- ts->indirect_base);
- tcg_out_mov(s, ts->type, reg, ts->reg);
- }
- new_args[i] = reg;
- const_args[i] = 0;
- tcg_regset_set_reg(allocated_regs, reg);
- iarg_end: ;
- }
-
- /* mark dead temporaries and free the associated registers */
- for (i = nb_oargs; i < nb_oargs + nb_iargs; i++) {
- if (IS_DEAD_ARG(i)) {
- temp_dead(s, &s->temps[args[i]]);
- }
- }
-
- if (def->flags & TCG_OPF_BB_END) {
- tcg_reg_alloc_bb_end(s, allocated_regs);
- } else {
- if (def->flags & TCG_OPF_CALL_CLOBBER) {
- /* XXX: permit generic clobber register list ? */
- for (i = 0; i < TCG_TARGET_NB_REGS; i++) {
- if (tcg_regset_test_reg(tcg_target_call_clobber_regs, i)) {
- tcg_reg_free(s, i, allocated_regs);
- }
- }
- }
- if (def->flags & TCG_OPF_SIDE_EFFECTS) {
- /* sync globals if the op has side effects and might trigger
- an exception. */
- sync_globals(s, allocated_regs);
- }
-
- /* satisfy the output constraints */
- tcg_regset_set(allocated_regs, s->reserved_regs);
- for(k = 0; k < nb_oargs; k++) {
- i = def->sorted_args[k];
- arg = args[i];
- arg_ct = &def->args_ct[i];
- ts = &s->temps[arg];
- if (arg_ct->ct & TCG_CT_ALIAS) {
- reg = new_args[arg_ct->alias_index];
- } else {
- /* if fixed register, we try to use it */
- reg = ts->reg;
- if (ts->fixed_reg &&
- tcg_regset_test_reg(arg_ct->u.regs, reg)) {
- goto oarg_end;
- }
- reg = tcg_reg_alloc(s, arg_ct->u.regs, allocated_regs,
- ts->indirect_base);
- }
- tcg_regset_set_reg(allocated_regs, reg);
- /* if a fixed register is used, then a move will be done afterwards */
- if (!ts->fixed_reg) {
- if (ts->val_type == TEMP_VAL_REG) {
- s->reg_to_temp[ts->reg] = NULL;
- }
- ts->val_type = TEMP_VAL_REG;
- ts->reg = reg;
- /* temp value is modified, so the value kept in memory is
- potentially not the same */
- ts->mem_coherent = 0;
- s->reg_to_temp[reg] = ts;
- }
- oarg_end:
- new_args[i] = reg;
- }
- }
-
- /* emit instruction */
- tcg_out_op(s, opc, new_args, const_args);
-
- /* move the outputs in the correct register if needed */
- for(i = 0; i < nb_oargs; i++) {
- ts = &s->temps[args[i]];
- reg = new_args[i];
- if (ts->fixed_reg && ts->reg != reg) {
- tcg_out_mov(s, ts->type, ts->reg, reg);
- }
- if (NEED_SYNC_ARG(i)) {
- tcg_reg_sync(s, reg, allocated_regs);
- }
- if (IS_DEAD_ARG(i)) {
- temp_dead(s, ts);
- }
- }
-}
-
-#ifdef TCG_TARGET_STACK_GROWSUP
-#define STACK_DIR(x) (-(x))
-#else
-#define STACK_DIR(x) (x)
-#endif
-
-static void tcg_reg_alloc_call(TCGContext *s, int nb_oargs, int nb_iargs,
- const TCGArg * const args, uint16_t dead_args,
- uint8_t sync_args)
-{
- int flags, nb_regs, i;
- TCGReg reg;
- TCGArg arg;
- TCGTemp *ts;
- intptr_t stack_offset;
- size_t call_stack_size;
- tcg_insn_unit *func_addr;
- int allocate_args;
- TCGRegSet allocated_regs;
-
- func_addr = (tcg_insn_unit *)(intptr_t)args[nb_oargs + nb_iargs];
- flags = args[nb_oargs + nb_iargs + 1];
-
- nb_regs = ARRAY_SIZE(tcg_target_call_iarg_regs);
- if (nb_regs > nb_iargs) {
- nb_regs = nb_iargs;
- }
-
- /* assign stack slots first */
- call_stack_size = (nb_iargs - nb_regs) * sizeof(tcg_target_long);
- call_stack_size = (call_stack_size + TCG_TARGET_STACK_ALIGN - 1) &
- ~(TCG_TARGET_STACK_ALIGN - 1);
- allocate_args = (call_stack_size > TCG_STATIC_CALL_ARGS_SIZE);
- if (allocate_args) {
- /* XXX: if more than TCG_STATIC_CALL_ARGS_SIZE is needed,
- preallocate call stack */
- tcg_abort();
- }
-
- stack_offset = TCG_TARGET_CALL_STACK_OFFSET;
- for(i = nb_regs; i < nb_iargs; i++) {
- arg = args[nb_oargs + i];
-#ifdef TCG_TARGET_STACK_GROWSUP
- stack_offset -= sizeof(tcg_target_long);
-#endif
- if (arg != TCG_CALL_DUMMY_ARG) {
- ts = &s->temps[arg];
- temp_load(s, ts, tcg_target_available_regs[ts->type],
- s->reserved_regs);
- tcg_out_st(s, ts->type, ts->reg, TCG_REG_CALL_STACK, stack_offset);
- }
-#ifndef TCG_TARGET_STACK_GROWSUP
- stack_offset += sizeof(tcg_target_long);
-#endif
- }
-
- /* assign input registers */
- tcg_regset_set(allocated_regs, s->reserved_regs);
- for(i = 0; i < nb_regs; i++) {
- arg = args[nb_oargs + i];
- if (arg != TCG_CALL_DUMMY_ARG) {
- ts = &s->temps[arg];
- reg = tcg_target_call_iarg_regs[i];
- tcg_reg_free(s, reg, allocated_regs);
-
- if (ts->val_type == TEMP_VAL_REG) {
- if (ts->reg != reg) {
- tcg_out_mov(s, ts->type, reg, ts->reg);
- }
- } else {
- TCGRegSet arg_set;
-
- tcg_regset_clear(arg_set);
- tcg_regset_set_reg(arg_set, reg);
- temp_load(s, ts, arg_set, allocated_regs);
- }
-
- tcg_regset_set_reg(allocated_regs, reg);
- }
- }
-
- /* mark dead temporaries and free the associated registers */
- for(i = nb_oargs; i < nb_iargs + nb_oargs; i++) {
- if (IS_DEAD_ARG(i)) {
- temp_dead(s, &s->temps[args[i]]);
- }
- }
-
- /* clobber call registers */
- for (i = 0; i < TCG_TARGET_NB_REGS; i++) {
- if (tcg_regset_test_reg(tcg_target_call_clobber_regs, i)) {
- tcg_reg_free(s, i, allocated_regs);
- }
- }
-
- /* Save globals if they might be written by the helper, sync them if
- they might be read. */
- if (flags & TCG_CALL_NO_READ_GLOBALS) {
- /* Nothing to do */
- } else if (flags & TCG_CALL_NO_WRITE_GLOBALS) {
- sync_globals(s, allocated_regs);
- } else {
- save_globals(s, allocated_regs);
- }
-
- tcg_out_call(s, func_addr);
-
- /* assign output registers and emit moves if needed */
- for(i = 0; i < nb_oargs; i++) {
- arg = args[i];
- ts = &s->temps[arg];
- reg = tcg_target_call_oarg_regs[i];
- tcg_debug_assert(s->reg_to_temp[reg] == NULL);
-
- if (ts->fixed_reg) {
- if (ts->reg != reg) {
- tcg_out_mov(s, ts->type, ts->reg, reg);
- }
- } else {
- if (ts->val_type == TEMP_VAL_REG) {
- s->reg_to_temp[ts->reg] = NULL;
- }
- ts->val_type = TEMP_VAL_REG;
- ts->reg = reg;
- ts->mem_coherent = 0;
- s->reg_to_temp[reg] = ts;
- if (NEED_SYNC_ARG(i)) {
- tcg_reg_sync(s, reg, allocated_regs);
- }
- if (IS_DEAD_ARG(i)) {
- temp_dead(s, ts);
- }
- }
- }
-}
-
-#ifdef CONFIG_PROFILER
-
-static int64_t tcg_table_op_count[NB_OPS];
-
-void tcg_dump_op_count(FILE *f, fprintf_function cpu_fprintf)
-{
- int i;
-
- for (i = 0; i < NB_OPS; i++) {
- cpu_fprintf(f, "%s %" PRId64 "\n", tcg_op_defs[i].name,
- tcg_table_op_count[i]);
- }
-}
-#else
-void tcg_dump_op_count(FILE *f, fprintf_function cpu_fprintf)
-{
- cpu_fprintf(f, "[TCG profiler not compiled]\n");
-}
-#endif
-
-
-int tcg_gen_code(TCGContext *s, TranslationBlock *tb)
-{
- int i, oi, oi_next, num_insns;
-
-#ifdef CONFIG_PROFILER
- {
- int n;
-
- n = s->gen_last_op_idx + 1;
- s->op_count += n;
- if (n > s->op_count_max) {
- s->op_count_max = n;
- }
-
- n = s->nb_temps;
- s->temp_count += n;
- if (n > s->temp_count_max) {
- s->temp_count_max = n;
- }
- }
-#endif
-
-#ifdef DEBUG_DISAS
- if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP)
- && qemu_log_in_addr_range(tb->pc))) {
- qemu_log("OP:\n");
- tcg_dump_ops(s);
- qemu_log("\n");
- }
-#endif
-
-#ifdef CONFIG_PROFILER
- s->opt_time -= profile_getclock();
-#endif
-
-#ifdef USE_TCG_OPTIMIZATIONS
- tcg_optimize(s);
-#endif
-
-#ifdef CONFIG_PROFILER
- s->opt_time += profile_getclock();
- s->la_time -= profile_getclock();
-#endif
-
- tcg_liveness_analysis(s);
-
-#ifdef CONFIG_PROFILER
- s->la_time += profile_getclock();
-#endif
-
-#ifdef DEBUG_DISAS
- if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP_OPT)
- && qemu_log_in_addr_range(tb->pc))) {
- qemu_log("OP after optimization and liveness analysis:\n");
- tcg_dump_ops(s);
- qemu_log("\n");
- }
-#endif
-
- tcg_reg_alloc_start(s);
-
- s->code_buf = tb->tc_ptr;
- s->code_ptr = tb->tc_ptr;
-
- tcg_out_tb_init(s);
-
- num_insns = -1;
- for (oi = s->gen_first_op_idx; oi >= 0; oi = oi_next) {
- TCGOp * const op = &s->gen_op_buf[oi];
- TCGArg * const args = &s->gen_opparam_buf[op->args];
- TCGOpcode opc = op->opc;
- const TCGOpDef *def = &tcg_op_defs[opc];
- uint16_t dead_args = s->op_dead_args[oi];
- uint8_t sync_args = s->op_sync_args[oi];
-
- oi_next = op->next;
-#ifdef CONFIG_PROFILER
- tcg_table_op_count[opc]++;
-#endif
-
- switch (opc) {
- case INDEX_op_mov_i32:
- case INDEX_op_mov_i64:
- tcg_reg_alloc_mov(s, def, args, dead_args, sync_args);
- break;
- case INDEX_op_movi_i32:
- case INDEX_op_movi_i64:
- tcg_reg_alloc_movi(s, args, dead_args, sync_args);
- break;
- case INDEX_op_insn_start:
- if (num_insns >= 0) {
- s->gen_insn_end_off[num_insns] = tcg_current_code_size(s);
- }
- num_insns++;
- for (i = 0; i < TARGET_INSN_START_WORDS; ++i) {
- target_ulong a;
-#if TARGET_LONG_BITS > TCG_TARGET_REG_BITS
- a = ((target_ulong)args[i * 2 + 1] << 32) | args[i * 2];
-#else
- a = args[i];
-#endif
- s->gen_insn_data[num_insns][i] = a;
- }
- break;
- case INDEX_op_discard:
- temp_dead(s, &s->temps[args[0]]);
- break;
- case INDEX_op_set_label:
- tcg_reg_alloc_bb_end(s, s->reserved_regs);
- tcg_out_label(s, arg_label(args[0]), s->code_ptr);
- break;
- case INDEX_op_call:
- tcg_reg_alloc_call(s, op->callo, op->calli, args,
- dead_args, sync_args);
- break;
- default:
- /* Sanity check that we've not introduced any unhandled opcodes. */
- if (def->flags & TCG_OPF_NOT_PRESENT) {
- tcg_abort();
- }
- /* Note: in order to speed up the code, it would be much
- faster to have specialized register allocator functions for
- some common argument patterns */
- tcg_reg_alloc_op(s, def, opc, args, dead_args, sync_args);
- break;
- }
-#ifdef CONFIG_DEBUG_TCG
- check_regs(s);
-#endif
- /* Test for (pending) buffer overflow. The assumption is that any
- one operation beginning below the high water mark cannot overrun
- the buffer completely. Thus we can test for overflow after
- generating code without having to check during generation. */
- if (unlikely((void *)s->code_ptr > s->code_gen_highwater)) {
- return -1;
- }
- }
- tcg_debug_assert(num_insns >= 0);
- s->gen_insn_end_off[num_insns] = tcg_current_code_size(s);
-
- /* Generate TB finalization at the end of block */
- if (!tcg_out_tb_finalize(s)) {
- return -1;
- }
-
- /* flush instruction cache */
- flush_icache_range((uintptr_t)s->code_buf, (uintptr_t)s->code_ptr);
-
- return tcg_current_code_size(s);
-}
-
-#ifdef CONFIG_PROFILER
-void tcg_dump_info(FILE *f, fprintf_function cpu_fprintf)
-{
- TCGContext *s = &tcg_ctx;
- int64_t tb_count = s->tb_count;
- int64_t tb_div_count = tb_count ? tb_count : 1;
- int64_t tot = s->interm_time + s->code_time;
-
- cpu_fprintf(f, "JIT cycles %" PRId64 " (%0.3f s at 2.4 GHz)\n",
- tot, tot / 2.4e9);
- cpu_fprintf(f, "translated TBs %" PRId64 " (aborted=%" PRId64 " %0.1f%%)\n",
- tb_count, s->tb_count1 - tb_count,
- (double)(s->tb_count1 - s->tb_count)
- / (s->tb_count1 ? s->tb_count1 : 1) * 100.0);
- cpu_fprintf(f, "avg ops/TB %0.1f max=%d\n",
- (double)s->op_count / tb_div_count, s->op_count_max);
- cpu_fprintf(f, "deleted ops/TB %0.2f\n",
- (double)s->del_op_count / tb_div_count);
- cpu_fprintf(f, "avg temps/TB %0.2f max=%d\n",
- (double)s->temp_count / tb_div_count, s->temp_count_max);
- cpu_fprintf(f, "avg host code/TB %0.1f\n",
- (double)s->code_out_len / tb_div_count);
- cpu_fprintf(f, "avg search data/TB %0.1f\n",
- (double)s->search_out_len / tb_div_count);
-
- cpu_fprintf(f, "cycles/op %0.1f\n",
- s->op_count ? (double)tot / s->op_count : 0);
- cpu_fprintf(f, "cycles/in byte %0.1f\n",
- s->code_in_len ? (double)tot / s->code_in_len : 0);
- cpu_fprintf(f, "cycles/out byte %0.1f\n",
- s->code_out_len ? (double)tot / s->code_out_len : 0);
- cpu_fprintf(f, "cycles/search byte %0.1f\n",
- s->search_out_len ? (double)tot / s->search_out_len : 0);
- if (tot == 0) {
- tot = 1;
- }
- cpu_fprintf(f, " gen_interm time %0.1f%%\n",
- (double)s->interm_time / tot * 100.0);
- cpu_fprintf(f, " gen_code time %0.1f%%\n",
- (double)s->code_time / tot * 100.0);
- cpu_fprintf(f, "optim./code time %0.1f%%\n",
- (double)s->opt_time / (s->code_time ? s->code_time : 1)
- * 100.0);
- cpu_fprintf(f, "liveness/code time %0.1f%%\n",
- (double)s->la_time / (s->code_time ? s->code_time : 1) * 100.0);
- cpu_fprintf(f, "cpu_restore count %" PRId64 "\n",
- s->restore_count);
- cpu_fprintf(f, " avg cycles %0.1f\n",
- s->restore_count ? (double)s->restore_time / s->restore_count : 0);
-}
-#else
-void tcg_dump_info(FILE *f, fprintf_function cpu_fprintf)
-{
- cpu_fprintf(f, "[TCG profiler not compiled]\n");
-}
-#endif
-
-#ifdef ELF_HOST_MACHINE
-/* In order to use this feature, the backend needs to do three things:
-
- (1) Define ELF_HOST_MACHINE to indicate both what value to
- put into the ELF image and to indicate support for the feature.
-
- (2) Define tcg_register_jit. This should create a buffer containing
- the contents of a .debug_frame section that describes the post-
- prologue unwind info for the tcg machine.
-
- (3) Call tcg_register_jit_int, with the constructed .debug_frame.
-*/
-
-/* Begin GDB interface. THE FOLLOWING MUST MATCH GDB DOCS. */
-typedef enum {
- JIT_NOACTION = 0,
- JIT_REGISTER_FN,
- JIT_UNREGISTER_FN
-} jit_actions_t;
-
-struct jit_code_entry {
- struct jit_code_entry *next_entry;
- struct jit_code_entry *prev_entry;
- const void *symfile_addr;
- uint64_t symfile_size;
-};
-
-struct jit_descriptor {
- uint32_t version;
- uint32_t action_flag;
- struct jit_code_entry *relevant_entry;
- struct jit_code_entry *first_entry;
-};
-
-void __jit_debug_register_code(void) __attribute__((noinline));
-void __jit_debug_register_code(void)
-{
- asm("");
-}
-
-/* Must statically initialize the version, because GDB may check
- the version before we can set it. */
-struct jit_descriptor __jit_debug_descriptor = { 1, 0, 0, 0 };
-
-/* End GDB interface. */
-
-static int find_string(const char *strtab, const char *str)
-{
- const char *p = strtab + 1;
-
- while (1) {
- if (strcmp(p, str) == 0) {
- return p - strtab;
- }
- p += strlen(p) + 1;
- }
-}
-
-static void tcg_register_jit_int(void *buf_ptr, size_t buf_size,
- const void *debug_frame,
- size_t debug_frame_size)
-{
- struct __attribute__((packed)) DebugInfo {
- uint32_t len;
- uint16_t version;
- uint32_t abbrev;
- uint8_t ptr_size;
- uint8_t cu_die;
- uint16_t cu_lang;
- uintptr_t cu_low_pc;
- uintptr_t cu_high_pc;
- uint8_t fn_die;
- char fn_name[16];
- uintptr_t fn_low_pc;
- uintptr_t fn_high_pc;
- uint8_t cu_eoc;
- };
-
- struct ElfImage {
- ElfW(Ehdr) ehdr;
- ElfW(Phdr) phdr;
- ElfW(Shdr) shdr[7];
- ElfW(Sym) sym[2];
- struct DebugInfo di;
- uint8_t da[24];
- char str[80];
- };
-
- struct ElfImage *img;
-
- static const struct ElfImage img_template = {
- .ehdr = {
- .e_ident[EI_MAG0] = ELFMAG0,
- .e_ident[EI_MAG1] = ELFMAG1,
- .e_ident[EI_MAG2] = ELFMAG2,
- .e_ident[EI_MAG3] = ELFMAG3,
- .e_ident[EI_CLASS] = ELF_CLASS,
- .e_ident[EI_DATA] = ELF_DATA,
- .e_ident[EI_VERSION] = EV_CURRENT,
- .e_type = ET_EXEC,
- .e_machine = ELF_HOST_MACHINE,
- .e_version = EV_CURRENT,
- .e_phoff = offsetof(struct ElfImage, phdr),
- .e_shoff = offsetof(struct ElfImage, shdr),
- .e_ehsize = sizeof(ElfW(Shdr)),
- .e_phentsize = sizeof(ElfW(Phdr)),
- .e_phnum = 1,
- .e_shentsize = sizeof(ElfW(Shdr)),
- .e_shnum = ARRAY_SIZE(img->shdr),
- .e_shstrndx = ARRAY_SIZE(img->shdr) - 1,
-#ifdef ELF_HOST_FLAGS
- .e_flags = ELF_HOST_FLAGS,
-#endif
-#ifdef ELF_OSABI
- .e_ident[EI_OSABI] = ELF_OSABI,
-#endif
- },
- .phdr = {
- .p_type = PT_LOAD,
- .p_flags = PF_X,
- },
- .shdr = {
- [0] = { .sh_type = SHT_NULL },
- /* Trick: The contents of code_gen_buffer are not present in
- this fake ELF file; that got allocated elsewhere. Therefore
- we mark .text as SHT_NOBITS (similar to .bss) so that readers
- will not look for contents. We can record any address. */
- [1] = { /* .text */
- .sh_type = SHT_NOBITS,
- .sh_flags = SHF_EXECINSTR | SHF_ALLOC,
- },
- [2] = { /* .debug_info */
- .sh_type = SHT_PROGBITS,
- .sh_offset = offsetof(struct ElfImage, di),
- .sh_size = sizeof(struct DebugInfo),
- },
- [3] = { /* .debug_abbrev */
- .sh_type = SHT_PROGBITS,
- .sh_offset = offsetof(struct ElfImage, da),
- .sh_size = sizeof(img->da),
- },
- [4] = { /* .debug_frame */
- .sh_type = SHT_PROGBITS,
- .sh_offset = sizeof(struct ElfImage),
- },
- [5] = { /* .symtab */
- .sh_type = SHT_SYMTAB,
- .sh_offset = offsetof(struct ElfImage, sym),
- .sh_size = sizeof(img->sym),
- .sh_info = 1,
- .sh_link = ARRAY_SIZE(img->shdr) - 1,
- .sh_entsize = sizeof(ElfW(Sym)),
- },
- [6] = { /* .strtab */
- .sh_type = SHT_STRTAB,
- .sh_offset = offsetof(struct ElfImage, str),
- .sh_size = sizeof(img->str),
- }
- },
- .sym = {
- [1] = { /* code_gen_buffer */
- .st_info = ELF_ST_INFO(STB_GLOBAL, STT_FUNC),
- .st_shndx = 1,
- }
- },
- .di = {
- .len = sizeof(struct DebugInfo) - 4,
- .version = 2,
- .ptr_size = sizeof(void *),
- .cu_die = 1,
- .cu_lang = 0x8001, /* DW_LANG_Mips_Assembler */
- .fn_die = 2,
- .fn_name = "code_gen_buffer"
- },
- .da = {
- 1, /* abbrev number (the cu) */
- 0x11, 1, /* DW_TAG_compile_unit, has children */
- 0x13, 0x5, /* DW_AT_language, DW_FORM_data2 */
- 0x11, 0x1, /* DW_AT_low_pc, DW_FORM_addr */
- 0x12, 0x1, /* DW_AT_high_pc, DW_FORM_addr */
- 0, 0, /* end of abbrev */
- 2, /* abbrev number (the fn) */
- 0x2e, 0, /* DW_TAG_subprogram, no children */
- 0x3, 0x8, /* DW_AT_name, DW_FORM_string */
- 0x11, 0x1, /* DW_AT_low_pc, DW_FORM_addr */
- 0x12, 0x1, /* DW_AT_high_pc, DW_FORM_addr */
- 0, 0, /* end of abbrev */
- 0 /* no more abbrev */
- },
- .str = "\0" ".text\0" ".debug_info\0" ".debug_abbrev\0"
- ".debug_frame\0" ".symtab\0" ".strtab\0" "code_gen_buffer",
- };
-
- /* We only need a single jit entry; statically allocate it. */
- static struct jit_code_entry one_entry;
-
- uintptr_t buf = (uintptr_t)buf_ptr;
- size_t img_size = sizeof(struct ElfImage) + debug_frame_size;
- DebugFrameHeader *dfh;
-
- img = g_malloc(img_size);
- *img = img_template;
-
- img->phdr.p_vaddr = buf;
- img->phdr.p_paddr = buf;
- img->phdr.p_memsz = buf_size;
-
- img->shdr[1].sh_name = find_string(img->str, ".text");
- img->shdr[1].sh_addr = buf;
- img->shdr[1].sh_size = buf_size;
-
- img->shdr[2].sh_name = find_string(img->str, ".debug_info");
- img->shdr[3].sh_name = find_string(img->str, ".debug_abbrev");
-
- img->shdr[4].sh_name = find_string(img->str, ".debug_frame");
- img->shdr[4].sh_size = debug_frame_size;
-
- img->shdr[5].sh_name = find_string(img->str, ".symtab");
- img->shdr[6].sh_name = find_string(img->str, ".strtab");
-
- img->sym[1].st_name = find_string(img->str, "code_gen_buffer");
- img->sym[1].st_value = buf;
- img->sym[1].st_size = buf_size;
-
- img->di.cu_low_pc = buf;
- img->di.cu_high_pc = buf + buf_size;
- img->di.fn_low_pc = buf;
- img->di.fn_high_pc = buf + buf_size;
-
- dfh = (DebugFrameHeader *)(img + 1);
- memcpy(dfh, debug_frame, debug_frame_size);
- dfh->fde.func_start = buf;
- dfh->fde.func_len = buf_size;
-
-#ifdef DEBUG_JIT
- /* Enable this block to be able to debug the ELF image file creation.
- One can use readelf, objdump, or other inspection utilities. */
- {
- FILE *f = fopen("/tmp/qemu.jit", "w+b");
- if (f) {
- if (fwrite(img, img_size, 1, f) != img_size) {
- /* Avoid stupid unused return value warning for fwrite. */
- }
- fclose(f);
- }
- }
-#endif
-
- one_entry.symfile_addr = img;
- one_entry.symfile_size = img_size;
-
- __jit_debug_descriptor.action_flag = JIT_REGISTER_FN;
- __jit_debug_descriptor.relevant_entry = &one_entry;
- __jit_debug_descriptor.first_entry = &one_entry;
- __jit_debug_register_code();
-}
-#else
-/* No support for the feature. Provide the entry point expected by exec.c,
- and implement the internal function we declared earlier. */
-
-static void tcg_register_jit_int(void *buf, size_t size,
- const void *debug_frame,
- size_t debug_frame_size)
-{
-}
-
-void tcg_register_jit(void *buf, size_t buf_size)
-{
-}
-#endif /* ELF_HOST_MACHINE */