* only the collection thread is active.
*/
typedef struct {
- MonoLMF *lmf;
- MonoContext ctx;
- gboolean has_context;
- MonoJitTlsData *jit_tls;
+ MonoThreadUnwindState unwind_state;
+ MonoThreadInfo *info;
/* For debugging */
mgreg_t tid;
gpointer ref_to_track;
static FILE *logfile;
+static gboolean enable_gc_maps_for_aot;
+
+void
+mini_gc_enable_gc_maps_for_aot (void)
+{
+ enable_gc_maps_for_aot = TRUE;
+}
+
// FIXME: Move these to a shared place
static inline void
return 0;
else if (frame_reg == X86_ESP)
return 1;
+#elif defined(TARGET_ARM)
+ if (frame_reg == ARMREG_SP)
+ return 0;
+ else if (frame_reg == ARMREG_FP)
+ return 1;
+#elif defined(TARGET_S390X)
+ if (frame_reg == S390_SP)
+ return 0;
+ else if (frame_reg == S390_FP)
+ return 1;
#else
NOT_IMPLEMENTED;
#endif
return X86_EBP;
else if (encoded == 1)
return X86_ESP;
+#elif defined(TARGET_ARM)
+ if (encoded == 0)
+ return ARMREG_SP;
+ else if (encoded == 1)
+ return ARMREG_FP;
+#elif defined(TARGET_S390X)
+ if (encoded == 0)
+ return S390_SP;
+ else if (encoded == 1)
+ return S390_FP;
#else
NOT_IMPLEMENTED;
#endif
#endif
#elif defined(TARGET_X86)
static int callee_saved_regs [] = { X86_EBX, X86_ESI, X86_EDI };
+#elif defined(TARGET_ARM)
+static int callee_saved_regs [] = { ARMREG_V1, ARMREG_V2, ARMREG_V3, ARMREG_V4, ARMREG_V5, ARMREG_V7, ARMREG_FP };
+#elif defined(TARGET_S390X)
+static int callee_saved_regs [] = { s390_r6, s390_r7, s390_r8, s390_r9, s390_r10, s390_r11, s390_r12, s390_r13, s390_r14 };
#endif
static guint32
tls = g_new0 (TlsData, 1);
tls->tid = GetCurrentThreadId ();
+ tls->info = mono_thread_info_current ();
stats.tlsdata_size += sizeof (TlsData);
return tls;
}
static void
-thread_suspend_func (gpointer user_data, void *sigctx)
+thread_suspend_func (gpointer user_data, void *sigctx, MonoContext *ctx)
{
TlsData *tls = user_data;
- if (!tls)
+ if (!tls) {
/* Happens during startup */
+ tls->unwind_state.valid = FALSE;
return;
+ }
+
+ if (tls->tid != GetCurrentThreadId ()) {
+ /* Happens on osx because threads are not suspended using signals */
+ gboolean res;
- tls->lmf = mono_get_lmf ();
- if (sigctx) {
- mono_arch_sigctx_to_monoctx (sigctx, &tls->ctx);
- tls->has_context = TRUE;
+ g_assert (tls->info);
+ res = mono_thread_state_init_from_handle (&tls->unwind_state, (MonoNativeThreadId)tls->tid, tls->info->native_handle);
} else {
- tls->has_context = FALSE;
+ tls->unwind_state.unwind_data [MONO_UNWIND_DATA_LMF] = mono_get_lmf ();
+ if (sigctx) {
+#ifdef MONO_ARCH_HAVE_SIGCTX_TO_MONOCTX
+ mono_arch_sigctx_to_monoctx (sigctx, &tls->unwind_state.ctx);
+ tls->unwind_state.valid = TRUE;
+#else
+ tls->unwind_state.valid = FALSE;
+#endif
+ } else if (ctx) {
+ memcpy (&tls->unwind_state.ctx, ctx, sizeof (MonoContext));
+ tls->unwind_state.valid = TRUE;
+ } else {
+ tls->unwind_state.valid = FALSE;
+ }
+ tls->unwind_state.unwind_data [MONO_UNWIND_DATA_JIT_TLS] = mono_native_tls_get_value (mono_jit_tls_id);
+ tls->unwind_state.unwind_data [MONO_UNWIND_DATA_DOMAIN] = mono_domain_get ();
+ }
+
+ if (!tls->unwind_state.unwind_data [MONO_UNWIND_DATA_DOMAIN]) {
+ /* Happens during startup */
+ tls->unwind_state.valid = FALSE;
+ return;
}
- tls->jit_tls = mono_native_tls_get_value (mono_jit_tls_id);
}
#define DEAD_REF ((gpointer)(gssize)0x2a2a2a2a2a2a2a2aULL)
return ctx->esp;
else if (frame_reg == X86_EBP)
return ctx->ebp;
+#elif defined(TARGET_ARM)
+ if (frame_reg == ARMREG_SP)
+ return (mgreg_t)MONO_CONTEXT_GET_SP (ctx);
+ else if (frame_reg == ARMREG_FP)
+ return (mgreg_t)MONO_CONTEXT_GET_BP (ctx);
+#elif defined(TARGET_S390X)
+ if (frame_reg == S390_SP)
+ return (mgreg_t)MONO_CONTEXT_GET_SP (ctx);
+ else if (frame_reg == S390_FP)
+ return (mgreg_t)MONO_CONTEXT_GET_BP (ctx);
#endif
g_assert_not_reached ();
return 0;
return;
}
- lmf = tls->lmf;
+ lmf = tls->unwind_state.unwind_data [MONO_UNWIND_DATA_LMF];
frame.domain = NULL;
/* Number of bytes scanned based on GC map data */
/* This is one past the last address which we have scanned */
stack_limit = stack_start;
- if (!tls->has_context)
+ if (!tls->unwind_state.valid)
memset (&new_ctx, 0, sizeof (ctx));
else
- memcpy (&new_ctx, &tls->ctx, sizeof (MonoContext));
+ memcpy (&new_ctx, &tls->unwind_state.ctx, sizeof (MonoContext));
memset (reg_locations, 0, sizeof (reg_locations));
memset (new_reg_locations, 0, sizeof (new_reg_locations));
while (TRUE) {
+ if (!tls->unwind_state.valid)
+ break;
+
memcpy (&ctx, &new_ctx, sizeof (ctx));
for (i = 0; i < MONO_MAX_IREGS; ++i) {
g_assert ((mgreg_t)stack_limit % SIZEOF_SLOT == 0);
- res = mono_find_jit_info_ext (frame.domain ? frame.domain : mono_domain_get (), tls->jit_tls, NULL, &ctx, &new_ctx, NULL, &lmf, new_reg_locations, &frame);
+ res = mono_find_jit_info_ext (frame.domain ? frame.domain : tls->unwind_state.unwind_data [MONO_UNWIND_DATA_DOMAIN], tls->unwind_state.unwind_data [MONO_UNWIND_DATA_JIT_TLS], NULL, &ctx, &new_ctx, NULL, &lmf, new_reg_locations, &frame);
if (!res)
break;
ji = frame.ji;
+ // FIXME: For skipped frames, scan the param area of the parent frame conservatively ?
+
if (frame.type == FRAME_TYPE_MANAGED_TO_NATIVE) {
/*
* These frames are problematic for several reasons:
}
DEBUG (fprintf (logfile, "\t <Last frame>\n"));
last = FALSE;
+ /*
+ * new_reg_locations is not precise when a method is interrupted during its epilog, so clear it.
+ */
+ for (i = 0; i < MONO_MAX_IREGS; ++i) {
+ if (reg_locations [i]) {
+ DEBUG (fprintf (logfile, "\tscan saved reg %s location %p.\n", mono_arch_regname (i), reg_locations [i]));
+ mono_gc_conservatively_scan_area (reg_locations [i], (char*)reg_locations [i] + SIZEOF_SLOT);
+ scanned_registers += SIZEOF_SLOT;
+ }
+ if (new_reg_locations [i]) {
+ DEBUG (fprintf (logfile, "\tscan saved reg %s location %p.\n", mono_arch_regname (i), new_reg_locations [i]));
+ mono_gc_conservatively_scan_area (new_reg_locations [i], (char*)new_reg_locations [i] + SIZEOF_SLOT);
+ scanned_registers += SIZEOF_SLOT;
+ }
+ reg_locations [i] = NULL;
+ new_reg_locations [i] = NULL;
+ }
continue;
}
}
/*
- * Clear locations of precisely stacked registers.
+ * Clear locations of precisely tracked registers.
*/
if (precise_regmask) {
for (i = 0; i < NREGS; ++i) {
if (!tls)
return;
+ if (!tls->unwind_state.valid)
+ return;
+
for (findex = 0; findex < tls->nframes; findex ++) {
/* Load information saved by the !precise pass */
fi = &tls->frames [findex];
precise_pass (tls, stack_start, stack_end);
}
+#ifndef DISABLE_JIT
+
static void
mini_gc_init_gc_map (MonoCompile *cfg)
{
if (!mono_gc_is_moving ())
return;
- if (!cfg->compile_aot && !mono_gc_precise_stack_mark_enabled ())
+ if (cfg->compile_aot) {
+ if (!enable_gc_maps_for_aot)
+ return;
+ } else if (!mono_gc_precise_stack_mark_enabled ())
return;
#if 1
return (slot * SIZEOF_SLOT) + gcfg->min_offset;
}
-static inline void
+static inline MONO_ALWAYS_INLINE void
set_slot (MonoCompileGC *gcfg, int slot, int callsite_index, GCSlotType type)
{
g_assert (slot >= 0 && slot < gcfg->nslots);
if (type == SLOT_PIN) {
- clear_bit (gcfg->stack_ref_bitmap, gcfg->stack_bitmap_width, callsite_index, slot);
- set_bit (gcfg->stack_pin_bitmap, gcfg->stack_bitmap_width, callsite_index, slot);
+ clear_bit (gcfg->stack_ref_bitmap, gcfg->stack_bitmap_width, slot, callsite_index);
+ set_bit (gcfg->stack_pin_bitmap, gcfg->stack_bitmap_width, slot, callsite_index);
} else if (type == SLOT_REF) {
- set_bit (gcfg->stack_ref_bitmap, gcfg->stack_bitmap_width, callsite_index, slot);
- clear_bit (gcfg->stack_pin_bitmap, gcfg->stack_bitmap_width, callsite_index, slot);
+ set_bit (gcfg->stack_ref_bitmap, gcfg->stack_bitmap_width, slot, callsite_index);
+ clear_bit (gcfg->stack_pin_bitmap, gcfg->stack_bitmap_width, slot, callsite_index);
} else if (type == SLOT_NOREF) {
- clear_bit (gcfg->stack_ref_bitmap, gcfg->stack_bitmap_width, callsite_index, slot);
- clear_bit (gcfg->stack_pin_bitmap, gcfg->stack_bitmap_width, callsite_index, slot);
+ clear_bit (gcfg->stack_ref_bitmap, gcfg->stack_bitmap_width, slot, callsite_index);
+ clear_bit (gcfg->stack_pin_bitmap, gcfg->stack_bitmap_width, slot, callsite_index);
}
}
static inline void
set_slot_everywhere (MonoCompileGC *gcfg, int slot, GCSlotType type)
{
+ int width, pos;
+ guint8 *ref_bitmap, *pin_bitmap;
+
+ /*
int cindex;
for (cindex = 0; cindex < gcfg->ncallsites; ++cindex)
set_slot (gcfg, slot, cindex, type);
+ */
+ ref_bitmap = gcfg->stack_ref_bitmap;
+ pin_bitmap = gcfg->stack_pin_bitmap;
+ width = gcfg->stack_bitmap_width;
+ pos = width * slot;
+
+ if (type == SLOT_PIN) {
+ memset (ref_bitmap + pos, 0, width);
+ memset (pin_bitmap + pos, 0xff, width);
+ } else if (type == SLOT_REF) {
+ memset (ref_bitmap + pos, 0xff, width);
+ memset (pin_bitmap + pos, 0, width);
+ } else if (type == SLOT_NOREF) {
+ memset (ref_bitmap + pos, 0, width);
+ memset (pin_bitmap + pos, 0, width);
+ }
}
static inline void
g_assert (slot >= 0 && slot < gcfg->nregs);
if (type == SLOT_PIN) {
- clear_bit (gcfg->reg_ref_bitmap, gcfg->reg_bitmap_width, callsite_index, slot);
- set_bit (gcfg->reg_pin_bitmap, gcfg->reg_bitmap_width, callsite_index, slot);
+ clear_bit (gcfg->reg_ref_bitmap, gcfg->reg_bitmap_width, slot, callsite_index);
+ set_bit (gcfg->reg_pin_bitmap, gcfg->reg_bitmap_width, slot, callsite_index);
} else if (type == SLOT_REF) {
- set_bit (gcfg->reg_ref_bitmap, gcfg->reg_bitmap_width, callsite_index, slot);
- clear_bit (gcfg->reg_pin_bitmap, gcfg->reg_bitmap_width, callsite_index, slot);
+ set_bit (gcfg->reg_ref_bitmap, gcfg->reg_bitmap_width, slot, callsite_index);
+ clear_bit (gcfg->reg_pin_bitmap, gcfg->reg_bitmap_width, slot, callsite_index);
} else if (type == SLOT_NOREF) {
- clear_bit (gcfg->reg_ref_bitmap, gcfg->reg_bitmap_width, callsite_index, slot);
- clear_bit (gcfg->reg_pin_bitmap, gcfg->reg_bitmap_width, callsite_index, slot);
+ clear_bit (gcfg->reg_ref_bitmap, gcfg->reg_bitmap_width, slot, callsite_index);
+ clear_bit (gcfg->reg_pin_bitmap, gcfg->reg_bitmap_width, slot, callsite_index);
}
}
if (cfg->verbose_level > 1) {
if (type == SLOT_REF)
printf ("\tref slot at fp+0x%x (slot = %d)\n", offset, slot);
+ else if (type == SLOT_NOREF)
+ printf ("\tnoref slot at 0x%x(fp) (slot = %d)\n", offset, slot);
}
}
}
+static gsize*
+get_vtype_bitmap (MonoType *t, int *numbits)
+{
+ MonoClass *klass = mono_class_from_mono_type (t);
+
+ if (klass->generic_container || mono_class_is_open_constructed_type (t)) {
+ /* FIXME: Generic sharing */
+ return NULL;
+ } else {
+ mono_class_compute_gc_descriptor (klass);
+
+ return mono_gc_get_bitmap_for_descr (klass->gc_descr, numbits);
+ }
+}
+
+static inline const char*
+get_offset_sign (int offset)
+{
+ return offset < 0 ? "-" : "+";
+}
+
+static inline int
+get_offset_val (int offset)
+{
+ return offset < 0 ? (- offset) : offset;
+}
+
static void
process_variables (MonoCompile *cfg)
{
gboolean byref, is_this = FALSE;
gboolean is_arg = i < cfg->locals_start;
- if (ins == cfg->ret)
- continue;
+ if (ins == cfg->ret) {
+ if (!(ins->opcode == OP_REGOFFSET && MONO_TYPE_ISSTRUCT (t)))
+ continue;
+ }
vmv = MONO_VARINFO (cfg, i);
if (ins->inst_offset % SIZEOF_SLOT != 0)
continue;
- if (is_arg && ins->inst_offset >= gcfg->max_offset)
- /* In parent frame */
- continue;
-
pos = fp_offset_to_slot (cfg, ins->inst_offset);
if (is_arg && ins->flags & MONO_INST_IS_DEAD) {
set_slot_everywhere (gcfg, pos, SLOT_NOREF);
if (cfg->verbose_level > 1) {
- printf ("\tdead arg at fp%s0x%x (slot = %d): %s\n", ins->inst_offset < 0 ? "-" : "+", (ins->inst_offset < 0) ? -(int)ins->inst_offset : (int)ins->inst_offset, pos, mono_type_full_name (ins->inst_vtype));
+ printf ("\tdead arg at fp%s0x%x (slot = %d): %s\n", get_offset_sign (ins->inst_offset), get_offset_val (ins->inst_offset), pos, mono_type_full_name (ins->inst_vtype));
}
continue;
}
size = mono_class_value_size (ins->klass, NULL);
size_in_slots = ALIGN_TO (size, SIZEOF_SLOT) / SIZEOF_SLOT;
+ if (cfg->verbose_level > 1)
+ printf ("\tvtype R%d at %s0x%x(fp)-%s0x%x(fp) (slot %d-%d): %s\n", vmv->vreg, get_offset_sign (ins->inst_offset), get_offset_val (ins->inst_offset), get_offset_sign (ins->inst_offset), get_offset_val (ins->inst_offset + (size_in_slots * SIZEOF_SLOT)), pos, pos + size_in_slots, mono_type_full_name (ins->inst_vtype));
+
if (!ins->klass->has_references) {
if (is_arg) {
for (j = 0; j < size_in_slots; ++j)
continue;
}
- if (ins->klass->generic_container || mono_class_is_open_constructed_type (t)) {
- /* FIXME: Generic sharing */
+ bitmap = get_vtype_bitmap (t, &numbits);
+ if (!bitmap)
pin = TRUE;
- } else {
- mono_class_compute_gc_descriptor (ins->klass);
- bitmap = mono_gc_get_bitmap_for_descr (ins->klass->gc_descr, &numbits);
- if (!bitmap)
+ /*
+ * Most vtypes are marked volatile because of the LDADDR instructions,
+ * and they have no liveness information since they are decomposed
+ * before the liveness pass. We emit OP_GC_LIVENESS_DEF instructions for
+ * them during VZERO decomposition.
+ */
+ if (!is_arg) {
+ if (!pc_offsets [vmv->vreg])
pin = TRUE;
- /*
- * Most vtypes are marked volatile because of the LDADDR instructions,
- * and they have no liveness information since they are decomposed
- * before the liveness pass. We emit OP_GC_LIVENESS_DEF instructions for
- * them during VZERO decomposition.
- */
- if (!pc_offsets [vmv->vreg])
+ if (ins->backend.is_pinvoke)
pin = TRUE;
}
- if (ins->backend.is_pinvoke)
- pin = TRUE;
-
- if (cfg->verbose_level > 1)
- printf ("\tvtype R%d at fp+0x%x-0x%x: %s\n", vmv->vreg, (int)ins->inst_offset, (int)(ins->inst_offset + (size / SIZEOF_SLOT)), mono_type_full_name (ins->inst_vtype));
-
if (bitmap) {
for (cindex = 0; cindex < gcfg->ncallsites; ++cindex) {
if (gcfg->callsites [cindex]->pc_offset > pc_offsets [vmv->vreg]) {
if (!mini_type_is_reference (cfg, t)) {
set_slot_everywhere (gcfg, pos, SLOT_NOREF);
if (cfg->verbose_level > 1)
- printf ("\tnoref at %s0x%x(fp) (R%d, slot = %d): %s\n", ins->inst_offset < 0 ? "-" : "", (ins->inst_offset < 0) ? -(int)ins->inst_offset : (int)ins->inst_offset, vmv->vreg, pos, mono_type_full_name (ins->inst_vtype));
+ printf ("\tnoref%s at %s0x%x(fp) (R%d, slot = %d): %s\n", (is_arg ? " arg" : ""), ins->inst_offset < 0 ? "-" : "", (ins->inst_offset < 0) ? -(int)ins->inst_offset : (int)ins->inst_offset, vmv->vreg, pos, mono_type_full_name (ins->inst_vtype));
+ if (!t->byref && sizeof (mgreg_t) == 4 && (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_R8)) {
+ set_slot_everywhere (gcfg, pos + 1, SLOT_NOREF);
+ if (cfg->verbose_level > 1)
+ printf ("\tnoref at %s0x%x(fp) (R%d, slot = %d): %s\n", ins->inst_offset < 0 ? "-" : "", (ins->inst_offset < 0) ? -(int)(ins->inst_offset + 4) : (int)ins->inst_offset + 4, vmv->vreg, pos + 1, mono_type_full_name (ins->inst_vtype));
+ }
continue;
}
}
if (cfg->verbose_level > 1) {
- printf ("\tref at %s0x%x(fp) (R%d, slot = %d): %s\n", ins->inst_offset < 0 ? "-" : "", (ins->inst_offset < 0) ? -(int)ins->inst_offset : (int)ins->inst_offset, vmv->vreg, pos, mono_type_full_name (ins->inst_vtype));
+ printf ("\tref%s at %s0x%x(fp) (R%d, slot = %d): %s\n", (is_arg ? " arg" : ""), ins->inst_offset < 0 ? "-" : "", (ins->inst_offset < 0) ? -(int)ins->inst_offset : (int)ins->inst_offset, vmv->vreg, pos, mono_type_full_name (ins->inst_vtype));
}
}
#endif
}
-static GCSlotType
-type_to_gc_slot_type (MonoCompile *cfg, MonoType *t)
-{
- if (t->byref)
- return SLOT_PIN;
- t = mini_type_get_underlying_type (NULL, t);
- if (mini_type_is_reference (cfg, t))
- return SLOT_REF;
- else {
- if (MONO_TYPE_ISSTRUCT (t)) {
- MonoClass *klass = mono_class_from_mono_type (t);
- if (!klass->has_references) {
- return SLOT_NOREF;
- } else {
- // FIXME:
- return SLOT_PIN;
- }
- }
- return SLOT_NOREF;
- }
-}
-
static void
process_param_area_slots (MonoCompile *cfg)
{
set_slot_everywhere (gcfg, i, SLOT_NOREF);
}
- for (cindex = 0; cindex < gcfg->ncallsites; ++cindex) {
- GCCallSite *callsite = gcfg->callsites [cindex];
- GSList *l;
-
- for (l = callsite->param_slots; l; l = l->next) {
- MonoInst *def = l->data;
- MonoType *t = def->inst_vtype;
- int sp_offset = def->inst_offset;
- int fp_offset = sp_offset_to_fp_offset (cfg, sp_offset);
- int slot = fp_offset_to_slot (cfg, fp_offset);
- GCSlotType type = type_to_gc_slot_type (cfg, t);
-
- if (MONO_TYPE_ISSTRUCT (t)) {
- guint32 align;
- guint32 size;
- int size_in_slots;
-
- size = mini_type_stack_size_full (cfg->generic_sharing_context, t, &align, FALSE);
- size_in_slots = ALIGN_TO (size, SIZEOF_SLOT) / SIZEOF_SLOT;
- // FIXME: slot type
- for (i = 0; i < size_in_slots; ++i) {
- set_slot_in_range (gcfg, slot + i, def->backend.pc_offset, callsite->pc_offset + 1, type);
- }
- if (cfg->verbose_level > 1)
- printf ("\t%s param area slots at %s0x%x(fp)=0x%x(sp) (slot = %d-%d) [0x%x-0x%x]\n", slot_type_to_string (type), fp_offset >= 0 ? "+" : "-", ABS (fp_offset), sp_offset, slot, slot + (size / (int)sizeof (mgreg_t)), def->backend.pc_offset, callsite->pc_offset + 1);
- } else {
- /* The slot is live between the def instruction and the call */
- set_slot_in_range (gcfg, slot, def->backend.pc_offset, callsite->pc_offset + 1, type);
- if (cfg->verbose_level > 1)
- printf ("\t%s param area slot at %s0x%x(fp)=0x%x(sp) (slot = %d) [0x%x-0x%x]\n", slot_type_to_string (type), fp_offset >= 0 ? "+" : "-", ABS (fp_offset), sp_offset, slot, def->backend.pc_offset, callsite->pc_offset + 1);
- }
- }
- }
+ /*
+ * We treat param area slots as being part of the callee's frame, to be able to handle tail calls which overwrite
+ * the argument area of the caller.
+ */
}
static void
/* Compute min/max offsets from the fp */
/* Locals */
-#if defined(TARGET_AMD64) || defined(TARGET_X86)
+#if defined(TARGET_AMD64) || defined(TARGET_X86) || defined(TARGET_ARM) || defined(TARGET_S390X)
locals_min_offset = ALIGN_TO (cfg->locals_min_stack_offset, SIZEOF_SLOT);
locals_max_offset = cfg->locals_max_stack_offset;
#else
for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
MonoInst *ins = cfg->args [i];
- if (ins->opcode == OP_REGOFFSET)
+ if (ins->opcode == OP_REGOFFSET) {
+ int size, size_in_slots;
+ size = mini_type_stack_size_full (cfg->generic_sharing_context, ins->inst_vtype, NULL, ins->backend.is_pinvoke);
+ size_in_slots = ALIGN_TO (size, SIZEOF_SLOT) / SIZEOF_SLOT;
+
min_offset = MIN (min_offset, ins->inst_offset);
+ max_offset = MAX ((int)max_offset, (int)(ins->inst_offset + (size_in_slots * SIZEOF_SLOT)));
+ }
}
/* Cfa slots */
min_offset = MIN (min_offset, -cfg->arch.sp_fp_offset);
#elif defined(TARGET_X86)
min_offset = MIN (min_offset, - (cfg->arch.sp_fp_offset + cfg->arch.param_area_size));
+#elif defined(TARGET_ARM)
+ // FIXME:
+#elif defined(TARGET_s390X)
+ // FIXME:
+#else
+ NOT_IMPLEMENTED;
#endif
gcfg->min_offset = min_offset;
gcfg->nregs = nregs;
gcfg->callsites = callsites;
gcfg->ncallsites = ncallsites;
- gcfg->stack_bitmap_width = ALIGN_TO (nslots, 8) / 8;
- gcfg->reg_bitmap_width = ALIGN_TO (nregs, 8) / 8;
- gcfg->stack_ref_bitmap = mono_mempool_alloc0 (cfg->mempool, gcfg->stack_bitmap_width * ncallsites);
- gcfg->stack_pin_bitmap = mono_mempool_alloc0 (cfg->mempool, gcfg->stack_bitmap_width * ncallsites);
- gcfg->reg_ref_bitmap = mono_mempool_alloc0 (cfg->mempool, gcfg->reg_bitmap_width * ncallsites);
- gcfg->reg_pin_bitmap = mono_mempool_alloc0 (cfg->mempool, gcfg->reg_bitmap_width * ncallsites);
+ gcfg->stack_bitmap_width = ALIGN_TO (ncallsites, 8) / 8;
+ gcfg->reg_bitmap_width = ALIGN_TO (ncallsites, 8) / 8;
+ gcfg->stack_ref_bitmap = mono_mempool_alloc0 (cfg->mempool, gcfg->stack_bitmap_width * nslots);
+ gcfg->stack_pin_bitmap = mono_mempool_alloc0 (cfg->mempool, gcfg->stack_bitmap_width * nslots);
+ gcfg->reg_ref_bitmap = mono_mempool_alloc0 (cfg->mempool, gcfg->reg_bitmap_width * nregs);
+ gcfg->reg_pin_bitmap = mono_mempool_alloc0 (cfg->mempool, gcfg->reg_bitmap_width * nregs);
/* All slots start out as PIN */
- memset (gcfg->stack_pin_bitmap, 0xff, gcfg->stack_bitmap_width * ncallsites);
+ memset (gcfg->stack_pin_bitmap, 0xff, gcfg->stack_bitmap_width * nregs);
for (i = 0; i < nregs; ++i) {
/*
* By default, registers are NOREF.
}
}
+static inline gboolean
+has_bit_set (guint8 *bitmap, int width, int slot)
+{
+ int i;
+ int pos = width * slot;
+
+ for (i = 0; i < width; ++i) {
+ if (bitmap [pos + i])
+ break;
+ }
+ return i < width;
+}
+
static void
create_map (MonoCompile *cfg)
{
gboolean has_ref = FALSE;
gboolean has_pin = FALSE;
- for (j = 0; j < ncallsites; ++j) {
- if (get_bit (gcfg->stack_pin_bitmap, gcfg->stack_bitmap_width, j, i))
- has_pin = TRUE;
- if (get_bit (gcfg->stack_ref_bitmap, gcfg->stack_bitmap_width, j, i))
- has_ref = TRUE;
- }
+ if (has_bit_set (gcfg->stack_pin_bitmap, gcfg->stack_bitmap_width, i))
+ has_pin = TRUE;
+ if (has_bit_set (gcfg->stack_ref_bitmap, gcfg->stack_bitmap_width, i))
+ has_ref = TRUE;
if (has_ref)
has_ref_slots = TRUE;
if (!(cfg->used_int_regs & (1 << i)))
continue;
- for (j = 0; j < ncallsites; ++j) {
- if (get_bit (gcfg->reg_ref_bitmap, gcfg->reg_bitmap_width, j, i)) {
- has_ref = TRUE;
- break;
- }
- }
- for (j = 0; j < ncallsites; ++j) {
- if (get_bit (gcfg->reg_pin_bitmap, gcfg->reg_bitmap_width, j, i)) {
- has_pin = TRUE;
- break;
- }
- }
+ if (has_bit_set (gcfg->reg_pin_bitmap, gcfg->reg_bitmap_width, i))
+ has_pin = TRUE;
+ if (has_bit_set (gcfg->reg_ref_bitmap, gcfg->reg_bitmap_width, i))
+ has_ref = TRUE;
if (has_ref) {
reg_ref_mask |= (1 << i);
/* Create the GC Map */
+ /* The work bitmaps have one row for each slot, since this is how we access them during construction */
stack_bitmap_width = ALIGN_TO (end - start, 8) / 8;
stack_bitmap_size = stack_bitmap_width * ncallsites;
reg_ref_bitmap_width = ALIGN_TO (nref_regs, 8) / 8;
bitmap = &bitmaps [map->stack_ref_bitmap_offset];
for (i = 0; i < nslots; ++i) {
for (j = 0; j < ncallsites; ++j) {
- if (get_bit (gcfg->stack_ref_bitmap, gcfg->stack_bitmap_width, j, i))
+ if (get_bit (gcfg->stack_ref_bitmap, gcfg->stack_bitmap_width, i, j))
set_bit (bitmap, stack_bitmap_width, j, i - start);
}
}
bitmap = &bitmaps [map->stack_pin_bitmap_offset];
for (i = 0; i < nslots; ++i) {
for (j = 0; j < ncallsites; ++j) {
- if (get_bit (gcfg->stack_pin_bitmap, gcfg->stack_bitmap_width, j, i))
+ if (get_bit (gcfg->stack_pin_bitmap, gcfg->stack_bitmap_width, i, j))
set_bit (bitmap, stack_bitmap_width, j, i - start);
}
}
for (i = 0; i < nregs; ++i) {
if (reg_ref_mask & (1 << i)) {
for (j = 0; j < ncallsites; ++j) {
- if (get_bit (gcfg->reg_ref_bitmap, gcfg->reg_bitmap_width, j, i))
+ if (get_bit (gcfg->reg_ref_bitmap, gcfg->reg_bitmap_width, i, j))
set_bit (bitmap, reg_ref_bitmap_width, j, bindex);
}
bindex ++;
for (i = 0; i < nregs; ++i) {
if (reg_pin_mask & (1 << i)) {
for (j = 0; j < ncallsites; ++j) {
- if (get_bit (gcfg->reg_pin_bitmap, gcfg->reg_bitmap_width, j, i))
+ if (get_bit (gcfg->reg_pin_bitmap, gcfg->reg_bitmap_width, i, j))
set_bit (bitmap, reg_pin_bitmap_width, j, bindex);
}
bindex ++;
create_map (cfg);
}
+#endif /* DISABLE_JIT */
+
static void
parse_debug_options (void)
{
#else
+void
+mini_gc_enable_gc_maps_for_aot (void)
+{
+}
+
void
mini_gc_init (void)
{
}
+#ifndef DISABLE_JIT
+
static void
mini_gc_init_gc_map (MonoCompile *cfg)
{
{
}
+#endif /* DISABLE_JIT */
+
+void
+mini_gc_enable_gc_maps_for_aot (void)
+{
+}
+
#endif
+#ifndef DISABLE_JIT
+
/*
* mini_gc_init_cfg:
*
mini_gc_init_gc_map (cfg);
}
+#endif /* DISABLE_JIT */
+
/*
* Problems with the current code:
* - the stack walk is slow
projects / mono.git / blobdiff