/* D e f i n e s */
/*------------------------------------------------------------------*/
-#define GR_SAVE_SIZE 4*sizeof(long)
-#define FP_SAVE_SIZE 16*sizeof(double)
-#define METHOD_SAVE_OFFSET S390_MINIMAL_STACK_SIZE
-#define CREATE_GR_OFFSET METHOD_SAVE_OFFSET+8
-#define CREATE_FP_OFFSET CREATE_GR_OFFSET+GR_SAVE_SIZE
-#define CREATE_LMF_OFFSET CREATE_FP_OFFSET+FP_SAVE_SIZE
-#define CREATE_STACK_SIZE (CREATE_LMF_OFFSET+2*sizeof(long)+sizeof(MonoLMF))
-#define GENERIC_REG_OFFSET CREATE_STACK_SIZE + \
- S390_REG_SAVE_OFFSET + \
- 3*sizeof(long)
+#define LMFReg s390_r13
-/*------------------------------------------------------------------*/
-/* Method-specific trampoline code fragment sizes */
-/*------------------------------------------------------------------*/
+/*
+ * Method-specific trampoline code fragment sizes
+ */
#define SPECIFIC_TRAMPOLINE_SIZE 96
/*========================= End of Defines =========================*/
#include <mono/metadata/abi-details.h>
#include <mono/metadata/appdomain.h>
-#include <mono/metadata/gc-internal.h>
+#include <mono/metadata/gc-internals.h>
#include <mono/metadata/marshal.h>
-#include <mono/metadata/monitor.h>
#include <mono/metadata/profiler-private.h>
#include <mono/metadata/tabledefs.h>
#include <mono/arch/s390x/s390x-codegen.h>
#include "mini.h"
#include "mini-s390x.h"
#include "support-s390x.h"
+#include "jit-icalls.h"
/*========================= End of Includes ========================*/
/* T y p e d e f s */
/*------------------------------------------------------------------*/
+typedef struct {
+ guint8 stk[S390_MINIMAL_STACK_SIZE]; /* Standard s390x stack */
+ guint64 saveFn; /* Call address */
+ struct MonoLMF LMF; /* LMF */
+} trampStack_t;
+
/*========================= End of Typedefs ========================*/
/*------------------------------------------------------------------*/
guint8 *code, *start;
int this_pos = s390_r2;
MonoDomain *domain = mono_domain_get ();
+ char trampName[128];
start = code = mono_domain_code_reserve (domain, 28);
mono_arch_flush_icache (start, code - start);
mono_profiler_code_buffer_new (start, code - start, MONO_PROFILER_CODE_BUFFER_UNBOX_TRAMPOLINE, method);
+ snprintf(trampName, sizeof(trampName), "%s_unbox_trampoline", method->name);
+
+ mono_tramp_info_register (mono_tramp_info_create (trampName, start, code - start, NULL, NULL), domain);
+
return start;
}
/*========================= End of Function ========================*/
-/*------------------------------------------------------------------*/
-/* */
-/* Name - mono_arch_nullify_class_init_trampoline */
-/* */
-/* Function - Nullify a call which calls a class init trampoline*/
-/* */
-/*------------------------------------------------------------------*/
-
-void
-mono_arch_nullify_class_init_trampoline (guint8 *code, mgreg_t *regs)
-{
- char patch[2] = {0x07, 0x00};
-
- code = code - 2;
-
- memcpy(code, patch, sizeof(patch));
-}
-
-/*========================= End of Function ========================*/
-
-/*------------------------------------------------------------------*/
-/* */
-/* Name - mono_arch_get_nullified_class_init */
-/* */
-/* Function - Nullify a PLT entry call. */
-/* */
-/*------------------------------------------------------------------*/
-
-gpointer
-mono_arch_get_nullified_class_init_trampoline (MonoTrampInfo **info)
-{
- guint8 *buf, *code;
-
- code = buf = mono_global_codeman_reserve (16);
-
- s390_br (code, s390_r14);
-
- mono_arch_flush_icache (buf, code - buf);
- mono_profiler_code_buffer_new (buf, code - buf, MONO_PROFILER_CODE_BUFFER_HELPER, NULL);
-
- *info = mono_tramp_info_create ("nullified_class_init_trampoline",
- buf, code - buf, NULL, NULL);
-
- return (buf);
-}
-
-/*========================= End of Function ========================*/
-
/*------------------------------------------------------------------*/
/* */
/* Name - mono_arch_create_trampoline_code */
{
char *tramp_name;
guint8 *buf, *tramp, *code;
- int i, offset, lmfOffset, has_caller;
+ int i, offset, has_caller;
GSList *unwind_ops = NULL;
MonoJumpInfo *ji = NULL;
s390_stmg (buf, s390_r6, s390_r15, STK_BASE, S390_REG_SAVE_OFFSET);
s390_lgr (buf, s390_r11, s390_r15);
- s390_aghi (buf, STK_BASE, -CREATE_STACK_SIZE);
+ s390_aghi (buf, STK_BASE, -sizeof(trampStack_t));
s390_stg (buf, s390_r11, 0, STK_BASE, 0);
- s390_stg (buf, s390_r1, 0, STK_BASE, METHOD_SAVE_OFFSET);
- s390_stmg (buf, s390_r2, s390_r5, STK_BASE, CREATE_GR_OFFSET);
- /* Save the FP registers */
- offset = CREATE_FP_OFFSET;
+ /*---------------------------------------------------------------*/
+ /* we build the MonoLMF structure on the stack - see mini-s390.h */
+ /* Keep in sync with the code in mono_arch_emit_prolog */
+ /*---------------------------------------------------------------*/
+
+ s390_lgr (buf, LMFReg, STK_BASE);
+ s390_aghi (buf, LMFReg, G_STRUCT_OFFSET(trampStack_t, LMF));
+
+ /*---------------------------------------------------------------*/
+ /* Save general and floating point registers in LMF */
+ /*---------------------------------------------------------------*/
+ s390_stmg (buf, s390_r0, s390_r1, LMFReg, G_STRUCT_OFFSET(MonoLMF, gregs[0]));
+ s390_stmg (buf, s390_r2, s390_r5, LMFReg, G_STRUCT_OFFSET(MonoLMF, gregs[2]));
+ s390_mvc (buf, 10*sizeof(gulong), LMFReg, G_STRUCT_OFFSET(MonoLMF, gregs[6]),
+ s390_r11, S390_REG_SAVE_OFFSET);
+
+ offset = G_STRUCT_OFFSET(MonoLMF, fregs[0]);
for (i = s390_f0; i <= s390_f15; ++i) {
- s390_std (buf, i, 0, STK_BASE, offset);
- offset += 8;
+ s390_std (buf, i, 0, LMFReg, offset);
+ offset += sizeof(gdouble);
}
/*----------------------------------------------------------
S390_SET (buf, s390_r1, mono_get_lmf_addr);
s390_basr (buf, s390_r14, s390_r1);
-
- /*---------------------------------------------------------------*/
- /* we build the MonoLMF structure on the stack - see mini-s390.h */
- /* Keep in sync with the code in mono_arch_emit_prolog */
- /*---------------------------------------------------------------*/
- lmfOffset = CREATE_STACK_SIZE - sizeof(MonoLMF);
-
- s390_lgr (buf, s390_r13, STK_BASE);
- s390_aghi (buf, s390_r13, lmfOffset);
/*---------------------------------------------------------------*/
/* Set lmf.lmf_addr = jit_tls->lmf */
/*---------------------------------------------------------------*/
- s390_stg (buf, s390_r2, 0, s390_r13,
+ s390_stg (buf, s390_r2, 0, LMFReg,
G_STRUCT_OFFSET(MonoLMF, lmf_addr));
/*---------------------------------------------------------------*/
/*---------------------------------------------------------------*/
/* Set our lmf as the current lmf */
/*---------------------------------------------------------------*/
- s390_stg (buf, s390_r13, 0, s390_r2, 0);
+ s390_stg (buf, LMFReg, 0, s390_r2, 0);
/*---------------------------------------------------------------*/
/* Have our lmf.previous_lmf point to the last lmf */
/*---------------------------------------------------------------*/
- s390_stg (buf, s390_r0, 0, s390_r13,
+ s390_stg (buf, s390_r0, 0, LMFReg,
G_STRUCT_OFFSET(MonoLMF, previous_lmf));
/*---------------------------------------------------------------*/
/* save method info */
/*---------------------------------------------------------------*/
- s390_lg (buf, s390_r1, 0, STK_BASE, METHOD_SAVE_OFFSET);
- s390_stg (buf, s390_r1, 0, s390_r13,
- G_STRUCT_OFFSET(MonoLMF, method));
+ s390_lg (buf, s390_r1, 0, LMFReg, G_STRUCT_OFFSET(MonoLMF, gregs[1]));
+ s390_stg (buf, s390_r1, 0, LMFReg, G_STRUCT_OFFSET(MonoLMF, method));
/*---------------------------------------------------------------*/
/* save the current SP */
/*---------------------------------------------------------------*/
s390_lg (buf, s390_r1, 0, STK_BASE, 0);
- s390_stg (buf, s390_r1, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, ebp));
+ s390_stg (buf, s390_r1, 0, LMFReg, G_STRUCT_OFFSET(MonoLMF, ebp));
/*---------------------------------------------------------------*/
/* save the current IP */
} else {
s390_lghi (buf, s390_r1, 0);
}
- s390_stg (buf, s390_r1, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, eip));
+ s390_stg (buf, s390_r1, 0, LMFReg, G_STRUCT_OFFSET(MonoLMF, eip));
- /*---------------------------------------------------------------*/
- /* Save general and floating point registers */
- /*---------------------------------------------------------------*/
- s390_mvc (buf, 4*sizeof(gulong), s390_r13, G_STRUCT_OFFSET(MonoLMF, gregs[2]),
- STK_BASE, CREATE_GR_OFFSET);
- s390_mvc (buf, 10*sizeof(gulong), s390_r13, G_STRUCT_OFFSET(MonoLMF, gregs[6]),
- s390_r11, S390_REG_SAVE_OFFSET);
-
- /* Simply copy fpregs already saved above */
- s390_mvc (buf, 16*sizeof(double), s390_r13, G_STRUCT_OFFSET(MonoLMF, fregs[0]),
- STK_BASE, CREATE_FP_OFFSET);
-
/*---------------------------------------------------------------*/
/* STEP 2: call the C trampoline function */
/*---------------------------------------------------------------*/
/* Set arguments */
- /* Arg 1: mgreg_t *regs. We pass sp instead */
- s390_la (buf, s390_r2, 0, STK_BASE, CREATE_STACK_SIZE);
+ /* Arg 1: mgreg_t *regs */
+ s390_la (buf, s390_r2, 0, LMFReg, G_STRUCT_OFFSET(MonoLMF, gregs[0]));
/* Arg 2: code (next address to the instruction that called us) */
if (has_caller) {
}
/* Arg 3: Trampoline argument */
- if (tramp_type == MONO_TRAMPOLINE_GENERIC_CLASS_INIT)
- s390_lg (buf, s390_r4, 0, STK_BASE, GENERIC_REG_OFFSET);
- else
- s390_lg (buf, s390_r4, 0, STK_BASE, METHOD_SAVE_OFFSET);
+ s390_lg (buf, s390_r4, 0, LMFReg, G_STRUCT_OFFSET(MonoLMF, gregs[1]));
/* Arg 4: trampoline address. */
S390_SET (buf, s390_r5, buf);
S390_SET (buf, s390_r1, tramp);
s390_basr (buf, s390_r14, s390_r1);
- /* OK, code address is now on r2. Move it to r1, so that we
- can restore r2 and use it from r1 later */
- s390_lgr (buf, s390_r1, s390_r2);
+ /* OK, code address is now on r2. Save it, so that we
+ can restore r2 and use it later */
+ s390_stg (buf, s390_r2, 0, STK_BASE, G_STRUCT_OFFSET(trampStack_t, saveFn));
+
+ /* Check for thread interruption */
+ S390_SET (buf, s390_r1, (guint8 *)mono_interruption_checkpoint_from_trampoline);
+ s390_basr (buf, s390_r14, s390_r1);
/*----------------------------------------------------------
STEP 3: Restore the LMF
----------------------------------------------------------*/
- restoreLMF(buf, STK_BASE, CREATE_STACK_SIZE);
+ restoreLMF(buf, STK_BASE, sizeof(trampStack_t));
+ /* Reload result */
+ s390_lg (buf, s390_r1, 0, STK_BASE, G_STRUCT_OFFSET(trampStack_t, saveFn));
+
/*----------------------------------------------------------
STEP 4: call the compiled method
----------------------------------------------------------*/
- /* Restore registers */
-
- s390_lmg (buf, s390_r2, s390_r5, STK_BASE, CREATE_GR_OFFSET);
+ /* Restore parameter registers */
+ s390_lmg (buf, s390_r2, s390_r5, LMFReg, G_STRUCT_OFFSET(MonoLMF, gregs[2]));
/* Restore the FP registers */
- offset = CREATE_FP_OFFSET;
+ offset = G_STRUCT_OFFSET(MonoLMF, fregs[0]);
for (i = s390_f0; i <= s390_f15; ++i) {
- s390_ld (buf, i, 0, STK_BASE, offset);
- offset += 8;
+ s390_ld (buf, i, 0, LMFReg, offset);
+ offset += sizeof(gdouble);
}
/* Restore stack pointer and jump to the code -
- R14 contains the return address to our caller */
+ * R14 contains the return address to our caller
+ */
s390_lgr (buf, STK_BASE, s390_r11);
s390_lmg (buf, s390_r6, s390_r14, STK_BASE, S390_REG_SAVE_OFFSET);
/*----------------------------------------------------------*/
code = buf = mono_domain_code_reserve (domain, SPECIFIC_TRAMPOLINE_SIZE);
- switch (tramp_type) {
- /*
- * Monitor tramps have the object in r2
- */
- case MONO_TRAMPOLINE_MONITOR_ENTER:
- case MONO_TRAMPOLINE_MONITOR_ENTER_V4:
- case MONO_TRAMPOLINE_MONITOR_EXIT:
- s390_lgr (buf, s390_r1, s390_r2);
- break;
- default :
- S390_SET (buf, s390_r1, arg1);
- }
+ S390_SET (buf, s390_r1, arg1);
displace = (tramp - buf) / 2;
s390_jg (buf, displace);
guint8 *code, *start;
gint32 displace;
int buf_len;
+ char trampName[128];
MonoDomain *domain = mono_domain_get ();
mono_arch_flush_icache (start, code - start);
mono_profiler_code_buffer_new (start, code - start, MONO_PROFILER_CODE_BUFFER_HELPER, NULL);
+ snprintf(trampName, sizeof(trampName), "%s_rgctx_trampoline", m->name);
+
+ mono_tramp_info_register (mono_tramp_info_create (trampName, start, code - start, NULL, NULL), domain);
+
return(start);
}
}
/*========================= End of Function ========================*/
-
-/*------------------------------------------------------------------*/
-/* */
-/* Name - mono_arch_create_generic_class_init_trampoline */
-/* */
-/* Function - */
-/* */
-/*------------------------------------------------------------------*/
-
-gpointer
-mono_arch_create_generic_class_init_trampoline (MonoTrampInfo **info, gboolean aot)
-{
- guint8 *tramp;
- guint8 *code, *buf;
- static int byte_offset = -1;
- static guint8 bitmask;
- gint32 displace;
- int tramp_size;
- GSList *unwind_ops = NULL;
- MonoJumpInfo *ji = NULL;
-
- tramp_size = 48;
-
- code = buf = mono_global_codeman_reserve (tramp_size);
-
- unwind_ops = mono_arch_get_cie_program ();
-
- if (byte_offset < 0)
- mono_marshal_find_bitfield_offset (MonoVTable, initialized, &byte_offset, &bitmask);
-
- s390_llgc(code, s390_r0, 0, MONO_ARCH_VTABLE_REG, byte_offset);
- s390_nill(code, s390_r0, bitmask);
- s390_bnzr(code, s390_r14);
-
- tramp = mono_arch_create_specific_trampoline (NULL, MONO_TRAMPOLINE_GENERIC_CLASS_INIT,
- mono_get_root_domain (), NULL);
-
- /* jump to the actual trampoline */
- displace = (tramp - code) / 2;
- s390_jg (code, displace);
-
- mono_arch_flush_icache (buf, code - buf);
-
- g_assert (code - buf <= tramp_size);
-
- *info = mono_tramp_info_create ("generic_class_init_trampoline", buf, code - buf, ji, unwind_ops);
-
- return(buf);
-}
-
-/*========================= End of Function ========================*/
-
-#ifdef MONO_ARCH_MONITOR_OBJECT_REG
-/*------------------------------------------------------------------*/
-/* */
-/* Name - mono_arch_create_monitor_enter_trampoline */
-/* */
-/* Function - */
-/* */
-/*------------------------------------------------------------------*/
-
-gpointer
-mono_arch_create_monitor_enter_trampoline (MonoTrampInfo **info, gboolean is_v4, gboolean aot)
-{
- guint8 *tramp,
- *code, *buf;
- gint16 *jump_obj_null,
- *jump_sync_null,
- *jump_cs_failed,
- *jump_other_owner,
- *jump_tid,
- *jump_sync_thin_hash = NULL,
- *jump_lock_taken_true = NULL;
- int tramp_size,
- status_reg = s390_r0,
- lock_taken_reg = s390_r1,
- obj_reg = s390_r2,
- sync_reg = s390_r3,
- tid_reg = s390_r4,
- status_offset,
- nest_offset;
- MonoJumpInfo *ji = NULL;
- GSList *unwind_ops = NULL;
-
- g_assert (MONO_ARCH_MONITOR_OBJECT_REG == obj_reg);
-#ifdef MONO_ARCH_MONITOR_LOCK_TAKEN_REG
- g_assert (MONO_ARCH_MONITOR_LOCK_TAKEN_REG == lock_taken_reg);
-#else
- g_assert (!is_v4);
-#endif
-
- mono_monitor_threads_sync_members_offset (&status_offset, &nest_offset);
- g_assert (MONO_THREADS_SYNC_MEMBER_SIZE (status_offset) == sizeof (guint32));
- g_assert (MONO_THREADS_SYNC_MEMBER_SIZE (nest_offset) == sizeof (guint32));
- status_offset = MONO_THREADS_SYNC_MEMBER_OFFSET (status_offset);
- nest_offset = MONO_THREADS_SYNC_MEMBER_OFFSET (nest_offset);
-
- tramp_size = 160;
-
- code = buf = mono_global_codeman_reserve (tramp_size);
-
- unwind_ops = mono_arch_get_cie_program ();
-
- if (mono_thread_get_tls_offset () != -1) {
- /* MonoObject* obj is in obj_reg */
- /* is obj null? */
- s390_ltgr (code, obj_reg, obj_reg);
- /* if yes, jump to actual trampoline */
- s390_jz (code, 0); CODEPTR(code, jump_obj_null);
-
- if (is_v4) {
- s390_cli (code, lock_taken_reg, 0, 1);
- /* if *lock_taken is 1, jump to actual trampoline */
- s390_je (code, 0); CODEPTR(code, jump_lock_taken_true);
- }
-
- /* load obj->synchronization to sync_reg */
- s390_lg (code, sync_reg, 0, obj_reg, MONO_STRUCT_OFFSET (MonoObject, synchronisation));
-
- if (mono_gc_is_moving ()) {
- /*if bit zero is set it's a thin hash*/
- s390_tmll (code, sync_reg, 1);
- s390_jo (code, 0); CODEPTR(code, jump_sync_thin_hash);
-
- /* Clear bits used by the gc */
- s390_nill (code, sync_reg, ~0x3);
- }
-
- /* is synchronization null? */
- s390_ltgr (code, sync_reg, sync_reg);
- /* if yes, jump to actual trampoline */
- s390_jz (code, 0); CODEPTR(code, jump_sync_null);
-
- /* load MonoInternalThread* into tid_reg */
- s390_ear (code, s390_r5, 0);
- s390_sllg(code, s390_r5, s390_r5, 0, 32);
- s390_ear (code, s390_r5, 1);
- /* load tid */
- s390_lg (code, tid_reg, 0, s390_r5, mono_thread_get_tls_offset ());
- s390_lgf (code, tid_reg, 0, tid_reg, MONO_STRUCT_OFFSET (MonoInternalThread, small_id));
-
- /* is synchronization->owner free */
- s390_lgf (code, status_reg, 0, sync_reg, status_offset);
- s390_nilf (code, status_reg, OWNER_MASK);
- /* if not, jump to next case */
- s390_jnz (code, 0); CODEPTR(code, jump_tid);
-
- /* if yes, try a compare-exchange with the TID */
- /* Form new status in tid_reg */
- s390_xr (code, tid_reg, status_reg);
- /* compare and exchange */
- s390_cs (code, status_reg, tid_reg, sync_reg, status_offset);
- s390_jnz (code, 0); CODEPTR(code, jump_cs_failed);
- /* if successful, return */
- if (is_v4)
- s390_mvi (code, lock_taken_reg, 0, 1);
- s390_br (code, s390_r14);
-
- /* next case: synchronization->owner is not null */
- PTRSLOT(code, jump_tid);
- /* is synchronization->owner == TID? */
- s390_nilf (code, status_reg, OWNER_MASK);
- s390_cr (code, status_reg, tid_reg);
- /* if not, jump to actual trampoline */
- s390_jnz (code, 0); CODEPTR(code, jump_other_owner);
- /* if yes, increment nest */
- s390_lgf (code, s390_r5, 0, sync_reg, nest_offset);
- s390_ahi (code, s390_r5, 1);
- s390_st (code, s390_r5, 0, sync_reg, nest_offset);
- /* return */
- if (is_v4)
- s390_mvi (code, lock_taken_reg, 0, 1);
- s390_br (code, s390_r14);
-
- PTRSLOT (code, jump_obj_null);
- if (jump_sync_thin_hash)
- PTRSLOT (code, jump_sync_thin_hash);
- PTRSLOT (code, jump_sync_null);
- PTRSLOT (code, jump_cs_failed);
- PTRSLOT (code, jump_other_owner);
- if (is_v4)
- PTRSLOT (code, jump_lock_taken_true);
- }
-
- /* jump to the actual trampoline */
- if (is_v4)
- tramp = mono_arch_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_ENTER_V4, mono_get_root_domain (), NULL);
- else
- tramp = mono_arch_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_ENTER, mono_get_root_domain (), NULL);
-
- /* jump to the actual trampoline */
- S390_SET (code, s390_r1, tramp);
- s390_br (code, s390_r1);
-
- mono_arch_flush_icache (code, code - buf);
- mono_profiler_code_buffer_new (buf, code - buf, MONO_PROFILER_CODE_BUFFER_MONITOR, NULL);
- g_assert (code - buf <= tramp_size);
-
- if (info) {
- if (is_v4)
- *info = mono_tramp_info_create ("monitor_enter_v4_trampoline", buf, code - buf, ji, unwind_ops);
- else
- *info = mono_tramp_info_create ("monitor_enter_trampoline", buf, code - buf, ji, unwind_ops);
- }
-
- return buf;
-}
-
-/*========================= End of Function ========================*/
-
-/*------------------------------------------------------------------*/
-/* */
-/* Name - mono_arch_create_monitor_exit_trampoline */
-/* */
-/* Function - */
-/* */
-/*------------------------------------------------------------------*/
-
-gpointer
-mono_arch_create_monitor_exit_trampoline (MonoTrampInfo **info, gboolean aot)
-{
- guint8 *tramp,
- *code, *buf;
- gint16 *jump_obj_null,
- *jump_have_waiters,
- *jump_sync_null,
- *jump_not_owned,
- *jump_cs_failed,
- *jump_next,
- *jump_sync_thin_hash = NULL;
- int tramp_size,
- status_offset, nest_offset;
- MonoJumpInfo *ji = NULL;
- GSList *unwind_ops = NULL;
- int obj_reg = s390_r2,
- sync_reg = s390_r3,
- status_reg = s390_r4;
-
- g_assert (obj_reg == MONO_ARCH_MONITOR_OBJECT_REG);
-
- mono_monitor_threads_sync_members_offset (&status_offset, &nest_offset);
- g_assert (MONO_THREADS_SYNC_MEMBER_SIZE (status_offset) == sizeof (guint32));
- g_assert (MONO_THREADS_SYNC_MEMBER_SIZE (nest_offset) == sizeof (guint32));
- status_offset = MONO_THREADS_SYNC_MEMBER_OFFSET (status_offset);
- nest_offset = MONO_THREADS_SYNC_MEMBER_OFFSET (nest_offset);
-
- tramp_size = 160;
-
- code = buf = mono_global_codeman_reserve (tramp_size);
-
- unwind_ops = mono_arch_get_cie_program ();
-
- if (mono_thread_get_tls_offset () != -1) {
- /* MonoObject* obj is in obj_reg */
- /* is obj null? */
- s390_ltgr (code, obj_reg, obj_reg);
- /* if yes, jump to actual trampoline */
- s390_jz (code, 0); CODEPTR(code, jump_obj_null);
-
- /* load obj->synchronization to RCX */
- s390_lg (code, sync_reg, 0, obj_reg, MONO_STRUCT_OFFSET (MonoObject, synchronisation));
-
- if (mono_gc_is_moving ()) {
- /*if bit zero is set it's a thin hash*/
- s390_tmll (code, sync_reg, 1);
- s390_jo (code, 0); CODEPTR(code, jump_sync_thin_hash);
-
- /* Clear bits used by the gc */
- s390_nill (code, sync_reg, ~0x3);
- }
-
- /* is synchronization null? */
- s390_ltgr (code, sync_reg, sync_reg);
- /* if yes, jump to actual trampoline */
- s390_jz (code, 0); CODEPTR(code, jump_sync_null);
-
- /* next case: synchronization is not null */
- /* load MonoInternalThread* into r5 */
- s390_ear (code, s390_r5, 0);
- s390_sllg(code, s390_r5, s390_r5, 0, 32);
- s390_ear (code, s390_r5, 1);
- /* load TID into r1 */
- s390_lg (code, s390_r1, 0, s390_r5, mono_thread_get_tls_offset ());
- s390_lgf (code, s390_r1, 0, s390_r1, MONO_STRUCT_OFFSET (MonoInternalThread, small_id));
- /* is synchronization->owner == TID */
- s390_lgf (code, status_reg, 0, sync_reg, status_offset);
- s390_xr (code, s390_r1, status_reg);
- s390_tmlh (code, s390_r1, OWNER_MASK);
- /* if not, jump to actual trampoline */
- s390_jno (code, 0); CODEPTR(code, jump_not_owned);
-
- /* next case: synchronization->owner == TID */
- /* is synchronization->nest == 1 */
- s390_lgf (code, s390_r0, 0, sync_reg, nest_offset);
- s390_chi (code, s390_r0, 1);
- /* if not, jump to next case */
- s390_jne (code, 0); CODEPTR(code, jump_next);
- /* if yes, is synchronization->entry_count greater than zero */
- s390_cfi (code, status_reg, ENTRY_COUNT_WAITERS);
- /* if not, jump to actual trampoline */
- s390_jnz (code, 0); CODEPTR(code, jump_have_waiters);
- /* if yes, try to set synchronization->owner to null and return */
- /* old status in s390_r0 */
- s390_lgfr (code, s390_r0, status_reg);
- /* form new status */
- s390_nilf (code, status_reg, ENTRY_COUNT_MASK);
- /* compare and exchange */
- s390_cs (code, s390_r0, status_reg, sync_reg, status_offset);
- /* if not successful, jump to actual trampoline */
- s390_jnz (code, 0); CODEPTR(code, jump_cs_failed);
- s390_br (code, s390_r14);
-
- /* next case: synchronization->nest is not 1 */
- PTRSLOT (code, jump_next);
- /* decrease synchronization->nest and return */
- s390_lgf (code, s390_r0, 0, sync_reg, nest_offset);
- s390_ahi (code, s390_r0, -1);
- s390_st (code, s390_r0, 0, sync_reg, nest_offset);
- s390_br (code, s390_r14);
-
- PTRSLOT (code, jump_obj_null);
- if (jump_sync_thin_hash)
- PTRSLOT (code, jump_sync_thin_hash);
- PTRSLOT (code, jump_have_waiters);
- PTRSLOT (code, jump_not_owned);
- PTRSLOT (code, jump_cs_failed);
- PTRSLOT (code, jump_sync_null);
- }
-
- /* jump to the actual trampoline */
- tramp = mono_arch_create_specific_trampoline (NULL, MONO_TRAMPOLINE_MONITOR_EXIT, mono_get_root_domain (), NULL);
-
- S390_SET (code, s390_r1, tramp);
- s390_br (code, s390_r1);
-
- mono_arch_flush_icache (code, code - buf);
- mono_profiler_code_buffer_new (buf, code - buf, MONO_PROFILER_CODE_BUFFER_MONITOR, NULL);
- g_assert (code - buf <= tramp_size);
-
- if (info)
- *info = mono_tramp_info_create ("monitor_exit_trampoline", buf, code - buf, ji, unwind_ops);
-
- return buf;
-}
-
-/*========================= End of Function ========================*/
-#endif
projects / mono.git / blobdiff