/*------------------------------------------------------------------*/
/* */
-/* Name - tramp-s390.c */
+/* Name - tramp-s390x.c */
/* */
/* Function - JIT trampoline code for S/390. */
/* */
#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)
/*------------------------------------------------------------------*/
/* Method-specific trampoline code fragment sizes */
/*------------------------------------------------------------------*/
/* */
-/* Name - mono_arch_get_unbox_trampoline */
+/* Name - mono_arch_get_unbox_trampoline */
/* */
/* Function - Return a pointer to a trampoline which does the */
/* unboxing before calling the method. */
int this_pos = s390_r2;
MonoDomain *domain = mono_domain_get ();
- start = addr;
- if ((!mono_method_signature (method)->ret->byref) &&
- (MONO_TYPE_ISSTRUCT (mono_method_signature (method)->ret)))
- this_pos = s390_r3;
-
- mono_domain_lock (domain);
- start = code = mono_code_manager_reserve (domain->code_mp, 28);
- mono_domain_unlock (domain);
+ start = code = mono_domain_code_reserve (domain, 28);
s390_basr (code, s390_r1, 0);
s390_j (code, 6);
/*------------------------------------------------------------------*/
/* */
-/* Name - mono_arch_patch_callsite */
+/* Name - mono_arch_patch_callsite */
/* */
-/* Function - Patch a non-virtual callsite so it calls @addr. */
+/* Function - Patch a non-virtual callsite so it calls @addr. */
/* */
/*------------------------------------------------------------------*/
/*========================= End of Function ========================*/
+/*------------------------------------------------------------------*/
+/* */
+/* Name - mono_arch_patch_plt_entry. */
+/* */
+/* Function - Patch a PLT entry - unused as yet. */
+/* */
+/*------------------------------------------------------------------*/
+
void
-mono_arch_patch_plt_entry (guint8 *code, guint8 *addr)
+mono_arch_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
{
g_assert_not_reached ();
}
/*------------------------------------------------------------------*/
/* */
-/* Name - mono_arch_nullify_class_init_trampoline */
+/* Name - mono_arch_nullify_class_init_trampoline */
/* */
-/* Function - Nullify a call which calls a class init trampoline */
+/* Function - Nullify a call which calls a class init trampoline*/
/* */
/*------------------------------------------------------------------*/
void
-mono_arch_nullify_class_init_trampoline (guint8 *code, gssize *regs)
+mono_arch_nullify_class_init_trampoline (guint8 *code, mgreg_t *regs)
{
char patch[2] = {0x07, 0x00};
/*========================= End of Function ========================*/
-void
-mono_arch_nullify_plt_entry (guint8 *code)
-{
- g_assert_not_reached ();
-}
-
-/*========================= End of Function ========================*/
-
/*------------------------------------------------------------------*/
/* */
-/* Name - mono_arch_get_vcall_slot */
+/* Name - mono_arch_get_nullified_class_init */
/* */
-/* Function - This method is called by the arch independent */
-/* trampoline code to determine the vtable slot used by */
-/* the call which invoked the trampoline. */
-/* */
-/* Parameters - code - Pointer into caller code */
-/* regs - Register state at the point of the call */
-/* displacement - Out parameter which will receive */
-/* the displacement of the vtable slot */
+/* Function - Nullify a PLT entry call. */
/* */
/*------------------------------------------------------------------*/
gpointer
-mono_arch_get_vcall_slot (guint8 *code, gpointer *regs, int *displacement)
+mono_arch_get_nullified_class_init_trampoline (MonoTrampInfo **info)
{
- int reg, lkReg;
- guchar* base;
- unsigned short opcode;
- char *sp;
+ guint8 *buf, *code;
- // We are passed sp instead of the register array
- sp = (char*)regs;
+ code = buf = mono_global_codeman_reserve (16);
- *displacement = 0;
+ s390_br (code, s390_r14);
- opcode = *((unsigned short *) (code - 6));
- if (opcode == 0xc0e5)
- /* This is the 'brasl' instruction */
- return NULL;
-
- /*-----------------------------------*/
- /* This is a bras r14,Rz instruction */
- /* If it's preceded by a LG Rx,d(Ry) */
- /* If Rz == 1 then this is virtual */
- /* call. */
- /*-----------------------------------*/
- code -= 6;
-
- /*-----------------------------------*/
- /* If call is preceded by LGR then */
- /* there's nothing to patch */
- /*-----------------------------------*/
- if ((code[0] == 0xb9) &&
- (code[1] == 0x04))
- return NULL;
-
- /*-----------------------------------*/
- /* We back up until we're pointing at*/
- /* the base/displacement portion of */
- /* the LG instruction */
- /*-----------------------------------*/
- lkReg = code[5] & 0x0f;
-
- /*-----------------------------------*/
- /* The LG instruction has format: */
- /* E3x0ylllhh04 - where: */
- /* x = Rx; y = Ry; */
- /* lll = low 12 bits of displacement */
- /* hh = high 8 bits of displacement */
- /*-----------------------------------*/
- reg = code[0] >> 4;
- *displacement = (code[2] << 12) +
- ((code[0] & 0x0f) << 8) +
- code[1];
-
- if (reg > 5)
- base = *((guchar **) (sp + S390_REG_SAVE_OFFSET +
- sizeof(long)*(reg-6)));
- else
- base = *((guchar **) ((sp - CREATE_STACK_SIZE) +
- CREATE_GR_OFFSET +
- sizeof(long)*(reg-2)));
- if (lkReg != 1)
- /* Non virtual call */
- return NULL;
-
- return base;
-}
-
-/*========================= End of Function ========================*/
+ if (info)
+ *info = mono_tramp_info_create ("nullified_class_init_trampoline",
+ buf, code - buf, NULL, NULL);
-gpointer*
-mono_arch_get_vcall_slot_addr (guint8* code, gpointer *regs)
-{
- gpointer vt;
- int displacement;
- vt = mono_arch_get_vcall_slot (code, regs, &displacement);
- if (!vt)
- return NULL;
- return (gpointer*)((char*)vt + displacement);
+ return (buf);
}
/*========================= End of Function ========================*/
/*------------------------------------------------------------------*/
/* */
-/* Name - mono_arch_create_trampoline_code */
+/* Name - mono_arch_create_trampoline_code */
/* */
/* Function - Create the designated type of trampoline according*/
/* to the 'tramp_type' parameter. */
/* */
/*------------------------------------------------------------------*/
-guchar *
-mono_arch_create_trampoline_code (MonoTrampolineType tramp_type)
+guchar*
+mono_arch_create_generic_trampoline (MonoTrampolineType tramp_type, MonoTrampInfo **info, gboolean aot)
{
-
+ char *tramp_name;
guint8 *buf, *tramp, *code;
int i, offset, lmfOffset;
+ GSList *unwind_ops = NULL;
+ MonoJumpInfo *ji = NULL;
+
+ g_assert (!aot);
/* Now we'll create in 'buf' the S/390 trampoline code. This
is the trampoline code common to all methods */
stack size big enough to save our registers.
-----------------------------------------------------------*/
- s390_stmg (buf, s390_r6, s390_r14, STK_BASE, S390_REG_SAVE_OFFSET);
+ 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_stg (buf, s390_r11, 0, STK_BASE, 0);
/*---------------------------------------------------------------*/
/* Save general and floating point registers */
/*---------------------------------------------------------------*/
- s390_stmg (buf, s390_r2, s390_r12, s390_r13,
- G_STRUCT_OFFSET(MonoLMF, gregs[2]));
- for (i = 0; i < 16; i++) {
- s390_std (buf, i, 0, s390_r13,
- G_STRUCT_OFFSET(MonoLMF, fregs[i]));
- }
+ 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: gssize *regs. We pass sp instead */
- s390_lgr (buf, s390_r2, STK_BASE);
- s390_ahi (buf, s390_r2, CREATE_STACK_SIZE);
+ /* Arg 1: mgreg_t *regs. We pass sp instead */
+ s390_la (buf, s390_r2, 0, STK_BASE, CREATE_STACK_SIZE);
/* Arg 2: code (next address to the instruction that called us) */
if (tramp_type == MONO_TRAMPOLINE_JUMP) {
s390_lg (buf, s390_r3, 0, s390_r11, S390_RET_ADDR_OFFSET);
}
- /* Arg 3: MonoMethod *method. It was put in r1 by the
- method-specific trampoline code, and then saved before the call
- to mono_get_lmf_addr()'. */
- s390_lg (buf, s390_r4, 0, STK_BASE, METHOD_SAVE_OFFSET);
+ /* 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);
/* Arg 4: trampoline address. Ignore for now */
s390_lgr (buf, STK_BASE, s390_r11);
s390_lmg (buf, s390_r6, s390_r14, STK_BASE, S390_REG_SAVE_OFFSET);
- if (tramp_type == MONO_TRAMPOLINE_CLASS_INIT || tramp_type == MONO_TRAMPOLINE_GENERIC_CLASS_INIT)
- s390_br (buf, s390_r14);
- else
- s390_br (buf, s390_r1);
+ if (MONO_TRAMPOLINE_TYPE_MUST_RETURN(tramp_type)) {
+ s390_lgr (buf, s390_r2, s390_r1);
+ s390_br (buf, s390_r14);
+ } else {
+ s390_br (buf, s390_r1);
+ }
/* Flush instruction cache, since we've generated code */
mono_arch_flush_icache (code, buf - code);
+ if (info) {
+ tramp_name = mono_get_generic_trampoline_name (tramp_type);
+ *info = mono_tramp_info_create (tramp_name, buf, buf - code, ji, unwind_ops);
+ g_free (tramp_name);
+ }
+
/* Sanity check */
g_assert ((buf - code) <= 512);
/*------------------------------------------------------------------*/
/* */
-/* Name - mono_arch_create_specific_trampoline */
+/* Name - mono_arch_create_specific_trampoline */
/* */
-/* Function - Creates the given kind of specific trampoline */
+/* Function - Creates the given kind of specific trampoline */
/* */
/*------------------------------------------------------------------*/
/* purpose is to provide the generic part with the */
/* MonoMethod *method pointer. We'll use r1 to keep it. */
/*----------------------------------------------------------*/
- mono_domain_lock (domain);
- code = buf = mono_code_manager_reserve (domain->code_mp, SPECIFIC_TRAMPOLINE_SIZE);
- mono_domain_unlock (domain);
+ code = buf = mono_domain_code_reserve (domain, SPECIFIC_TRAMPOLINE_SIZE);
s390_basr (buf, s390_r1, 0);
s390_j (buf, 6);
s390_llong(buf, arg1);
s390_lg (buf, s390_r1, 0, s390_r1, 4);
displace = (tramp - buf) / 2;
- s390_jcl (buf, S390_CC_UN, displace);
+ s390_jg (buf, displace);
/* Flush instruction cache, since we've generated code */
mono_arch_flush_icache (code, buf - code);
/*========================= End of Function ========================*/
+/*------------------------------------------------------------------*/
+/* */
+/* Name - mono_arch_create_rgctx_lazy_fetch_trampoline */
+/* */
+/* Function - */
+/* */
+/*------------------------------------------------------------------*/
+
gpointer
-mono_arch_create_rgctx_lazy_fetch_trampoline (guint32 encoded_offset)
+mono_arch_create_rgctx_lazy_fetch_trampoline (guint32 slot, MonoTrampInfo **info, gboolean aot)
{
- /* FIXME: implement! */
+#ifdef MONO_ARCH_VTABLE_REG
+ guint8 *tramp;
+ guint8 *code, *buf;
+ guint8 **rgctx_null_jumps;
+ gint32 displace;
+ int tramp_size,
+ depth,
+ index,
+ iPatch = 0,
+ i;
+ gboolean mrgctx;
+ MonoJumpInfo *ji = NULL;
+ GSList *unwind_ops = NULL;
+
+ mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
+ index = MONO_RGCTX_SLOT_INDEX (slot);
+ if (mrgctx)
+ index += MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT / sizeof (gpointer);
+ for (depth = 0; ; ++depth) {
+ int size = mono_class_rgctx_get_array_size (depth, mrgctx);
+
+ if (index < size - 1)
+ break;
+ index -= size - 1;
+ }
+
+ tramp_size = 48 + 16 * depth;
+ if (mrgctx)
+ tramp_size += 4;
+ else
+ tramp_size += 12;
+
+ code = buf = mono_global_codeman_reserve (tramp_size);
+
+ unwind_ops = mono_arch_get_cie_program ();
+
+ rgctx_null_jumps = g_malloc (sizeof (guint8*) * (depth + 2));
+
+ if (mrgctx) {
+ /* get mrgctx ptr */
+ s390_lgr (code, s390_r1, s390_r2);
+ } else {
+ /* load rgctx ptr from vtable */
+ s390_lg (code, s390_r1, 0, s390_r2, G_STRUCT_OFFSET(MonoVTable, runtime_generic_context));
+ /* is the rgctx ptr null? */
+ s390_ltgr (code, s390_r1, s390_r1);
+ /* if yes, jump to actual trampoline */
+ rgctx_null_jumps [iPatch++] = code;
+ s390_jge (code, 0);
+ }
+
+ for (i = 0; i < depth; ++i) {
+ /* load ptr to next array */
+ if (mrgctx && i == 0)
+ s390_lg (code, s390_r1, 0, s390_r1, MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT);
+ else
+ s390_lg (code, s390_r1, 0, s390_r1, 0);
+ s390_ltgr (code, s390_r1, s390_r1);
+ /* if the ptr is null then jump to actual trampoline */
+ rgctx_null_jumps [iPatch++] = code;
+ s390_jge (code, 0);
+ }
+
+ /* fetch slot */
+ s390_lg (code, s390_r1, 0, s390_r1, (sizeof (gpointer) * (index + 1)));
+ /* is the slot null? */
+ s390_ltgr (code, s390_r1, s390_r1);
+ /* if yes, jump to actual trampoline */
+ rgctx_null_jumps [iPatch++] = code;
+ s390_jge (code, 0);
+ /* otherwise return r1 */
+ s390_lgr (code, s390_r2, s390_r1);
+ s390_br (code, s390_r14);
+
+ for (i = 0; i < iPatch; i++) {
+ displace = ((uintptr_t) code - (uintptr_t) rgctx_null_jumps[i]) / 2;
+ s390_patch_rel ((rgctx_null_jumps [i] + 2), displace);
+ }
+
+ g_free (rgctx_null_jumps);
+
+ /* move the rgctx pointer to the VTABLE register */
+ s390_lgr (code, MONO_ARCH_VTABLE_REG, s390_r2);
+
+ tramp = mono_arch_create_specific_trampoline (GUINT_TO_POINTER (slot),
+ MONO_TRAMPOLINE_RGCTX_LAZY_FETCH, 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);
+
+ if (info) {
+ char *name = mono_get_rgctx_fetch_trampoline_name (slot);
+ *info = mono_tramp_info_create (name, buf, code - buf, ji, unwind_ops);
+ g_free (name);
+ }
+
+ return(buf);
+#else
g_assert_not_reached ();
- return NULL;
-}
+#endif
+ return(NULL);
+}
-guint32
-mono_arch_get_rgctx_lazy_fetch_offset (gpointer *regs)
+/*========================= End of Function ========================*/
+
+/*------------------------------------------------------------------*/
+/* */
+/* Name - mono_arch_get_static_rgctx_trampoline */
+/* */
+/* Function - Create a trampoline which sets RGCTX_REG to MRGCTX*/
+/* then jumps to ADDR. */
+/* */
+/*------------------------------------------------------------------*/
+
+gpointer
+mono_arch_get_static_rgctx_trampoline (MonoMethod *m,
+ MonoMethodRuntimeGenericContext *mrgctx,
+ gpointer addr)
{
- /* FIXME: implement! */
- g_assert_not_reached ();
- return 0;
+ guint8 *code, *start;
+ gint32 displace;
+ int buf_len;
+
+ MonoDomain *domain = mono_domain_get ();
+
+ buf_len = 32;
+
+ start = code = mono_domain_code_reserve (domain, buf_len);
+
+ s390_basr (code, s390_r1, 0);
+ s390_j (code, 6);
+ s390_llong(code, mrgctx);
+ s390_lg (code, MONO_ARCH_RGCTX_REG, 0, s390_r1, 4);
+ displace = ((uintptr_t) addr - (uintptr_t) code) / 2;
+ s390_jg (code, displace);
+ g_assert ((code - start) < buf_len);
+
+ mono_arch_flush_icache (start, code - start);
+
+ 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;
+ guint8 *jump;
+ 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);
+
+ if (info)
+ *info = mono_tramp_info_create ("generic_class_init_trampoline", buf, code - buf, ji, unwind_ops);
+
+ return(buf);
}
+
+/*========================= End of Function ========================*/
projects / mono.git / blobdiff