2006-04-20 Geoff Norton <gnorton@customerdna.com>
[mono.git] / mono / mini / mini-ia64.c
index 09b1227834301f9c6d5d1a4af24f6061aa6c82dd..4f7309258718ceccd76d11a5b5abb6c905375313 100644 (file)
@@ -398,6 +398,13 @@ get_call_info (MonoMethodSignature *sig, gboolean is_pinvoke)
                        cinfo->ret.storage = ArgInFloatReg;
                        cinfo->ret.reg = 8;
                        break;
+               case MONO_TYPE_GENERICINST:
+                       if (!mono_type_generic_inst_is_valuetype (sig->ret)) {
+                               cinfo->ret.storage = ArgInIReg;
+                               cinfo->ret.reg = IA64_R8;
+                               break;
+                       }
+                       /* Fall through */
                case MONO_TYPE_VALUETYPE:
                case MONO_TYPE_TYPEDBYREF: {
                        guint32 tmp_gr = 0, tmp_fr = 0, tmp_stacksize = 0;
@@ -478,6 +485,12 @@ get_call_info (MonoMethodSignature *sig, gboolean is_pinvoke)
                case MONO_TYPE_ARRAY:
                        add_general (&gr, &stack_size, ainfo);
                        break;
+               case MONO_TYPE_GENERICINST:
+                       if (!mono_type_generic_inst_is_valuetype (sig->params [i])) {
+                               add_general (&gr, &stack_size, ainfo);
+                               break;
+                       }
+                       /* Fall through */
                case MONO_TYPE_VALUETYPE:
                case MONO_TYPE_TYPEDBYREF:
                        /* FIXME: */
@@ -595,6 +608,10 @@ is_regsize_var (MonoType *t) {
        case MONO_TYPE_SZARRAY:
        case MONO_TYPE_ARRAY:
                return TRUE;
+       case MONO_TYPE_GENERICINST:
+               if (!mono_type_generic_inst_is_valuetype (t))
+                       return TRUE;
+               return FALSE;
        case MONO_TYPE_VALUETYPE:
                return FALSE;
        }
@@ -659,7 +676,8 @@ static void
 mono_ia64_alloc_stacked_registers (MonoCompile *cfg)
 {
        CallInfo *cinfo;
-       guint32 reserved_regs = 3;
+       guint32 reserved_regs;
+       MonoMethodHeader *header;
 
        if (cfg->arch.reg_local0 > 0)
                /* Already done */
@@ -667,8 +685,10 @@ mono_ia64_alloc_stacked_registers (MonoCompile *cfg)
 
        cinfo = get_call_info (mono_method_signature (cfg->method), FALSE);
 
-       /* Three registers are reserved for use by the prolog/epilog */
-       reserved_regs = 3;
+       header = mono_method_get_header (cfg->method);
+       
+       /* Some registers are reserved for use by the prolog/epilog */
+       reserved_regs = header->num_clauses ? 4 : 3;
 
        if ((mono_jit_trace_calls != NULL && mono_trace_eval (cfg->method)) ||
                (cfg->prof_options & MONO_PROFILE_ENTER_LEAVE)) {
@@ -685,11 +705,20 @@ mono_ia64_alloc_stacked_registers (MonoCompile *cfg)
 
        cfg->arch.reg_saved_ar_pfs = cfg->arch.reg_local0 - 1;
        cfg->arch.reg_saved_b0 = cfg->arch.reg_local0 - 2;
-       cfg->arch.reg_saved_sp = cfg->arch.reg_local0 - 3;
+       cfg->arch.reg_fp = cfg->arch.reg_local0 - 3;
+
+       /* 
+        * Frames without handlers save sp to fp, frames with handlers save it into
+        * a dedicated register.
+        */
+       if (header->num_clauses)
+               cfg->arch.reg_saved_sp = cfg->arch.reg_local0 - 4;
+       else
+               cfg->arch.reg_saved_sp = cfg->arch.reg_fp;
 
        if ((mono_jit_trace_calls != NULL && mono_trace_eval (cfg->method)) ||
                (cfg->prof_options & MONO_PROFILE_ENTER_LEAVE)) {
-               cfg->arch.reg_saved_return_val = cfg->arch.reg_local0 - 4;
+               cfg->arch.reg_saved_return_val = cfg->arch.reg_local0 - reserved_regs;
        }
 
        /* 
@@ -790,7 +819,7 @@ mono_arch_allocate_vars (MonoCompile *cfg)
        }
        else {
                /* Locals are allocated backwards from %fp */
-               cfg->frame_reg = cfg->arch.reg_saved_sp;
+               cfg->frame_reg = cfg->arch.reg_fp;
                offset = 0;
        }
 
@@ -1060,7 +1089,7 @@ mono_arch_call_opcode (MonoCompile *cfg, MonoBasicBlock* bb, MonoCallInst *call,
 
                        if ((i >= sig->hasthis) && (MONO_TYPE_ISSTRUCT(arg_type))) {
                                MonoInst *stack_addr;
-                               gint align;
+                               guint32 align;
                                guint32 size;
 
                                if (arg_type->type == MONO_TYPE_TYPEDBYREF) {
@@ -1232,6 +1261,7 @@ peephole_pass (MonoCompile *cfg, MonoBasicBlock *bb)
                switch (ins->opcode) {
                case OP_MOVE:
                case OP_FMOVE:
+               case OP_SETREG:
                        /*
                         * Removes:
                         *
@@ -2148,9 +2178,11 @@ emit_move_return_value (MonoCompile *cfg, MonoInst *ins, Ia64CodegenState code)
                break;
        case OP_VCALL:
        case OP_VCALL_REG:
-       case OP_VCALL_MEMBASE:
+       case OP_VCALL_MEMBASE: {
+               ArgStorage storage;
+
                cinfo = get_call_info (((MonoCallInst*)ins)->signature, FALSE);
-               ArgStorage storage = cinfo->ret.storage;
+               storage = cinfo->ret.storage;
 
                if (storage == ArgAggregate) {
                        MonoInst *local = (MonoInst*)cfg->arch.ret_var_addr_local;
@@ -2178,6 +2210,7 @@ emit_move_return_value (MonoCompile *cfg, MonoInst *ins, Ia64CodegenState code)
                }
                g_free (cinfo);
                break;
+       }
        default:
                g_assert_not_reached ();
        }
@@ -2189,6 +2222,15 @@ emit_move_return_value (MonoCompile *cfg, MonoInst *ins, Ia64CodegenState code)
        mono_add_patch_info (cfg, code.buf + code.nins - cfg->native_code, patch_type, data); \
 } while (0)
 
+#define emit_cond_system_exception(cfg,code,exc_name,predicate) do { \
+       MonoInst *tins = mono_branch_optimize_exception_target (cfg, bb, exc_name); \
+    if (tins == NULL) \
+        add_patch_info (cfg, code, MONO_PATCH_INFO_EXC, exc_name); \
+    else \
+               add_patch_info (cfg, code, MONO_PATCH_INFO_BB, tins->inst_true_bb); \
+       ia64_br_cond_pred (code, (predicate), 0); \
+} while (0)
+
 static Ia64CodegenState
 emit_call (MonoCompile *cfg, Ia64CodegenState code, guint32 patch_type, gconstpointer data)
 {
@@ -2196,6 +2238,7 @@ emit_call (MonoCompile *cfg, Ia64CodegenState code, guint32 patch_type, gconstpo
 
        if ((patch_type == MONO_PATCH_INFO_ABS) || (patch_type == MONO_PATCH_INFO_INTERNAL_METHOD)) {
                /* Indirect call */
+               /* mono_arch_patch_callsite will patch this */
                /* mono_arch_nullify_class_init_trampoline will patch this */
                ia64_movl (code, GP_SCRATCH_REG, 0);
                ia64_ld8_inc_imm (code, GP_SCRATCH_REG2, GP_SCRATCH_REG, 8);
@@ -2708,20 +2751,14 @@ mono_arch_output_basic_block (MonoCompile *cfg, MonoBasicBlock *bb)
 
                case OP_COND_EXC_IOV:
                case OP_COND_EXC_OV:
-                       add_patch_info (cfg, code,
-                                                                MONO_PATCH_INFO_EXC, "OverflowException");
-                       ia64_br_cond_pred (code, 6, 0);
+                       emit_cond_system_exception (cfg, code, "OverflowException", 6);
                        break;
                case OP_COND_EXC_IC:
                case OP_COND_EXC_C:
-                       add_patch_info (cfg, code,
-                                                                MONO_PATCH_INFO_EXC, "OverflowException");
-                       ia64_br_cond_pred (code, 7, 0);
+                       emit_cond_system_exception (cfg, code, "OverflowException", 7);
                        break;
                case OP_IA64_COND_EXC:
-                       add_patch_info (cfg, code,
-                                                                MONO_PATCH_INFO_EXC, ins->inst_p1);
-                       ia64_br_cond_pred (code, 6, 0);
+                       emit_cond_system_exception (cfg, code, ins->inst_p1, 6);
                        break;
                case OP_IA64_CSET:
                        ia64_mov_pred (code, 7, ins->dreg, IA64_R0);
@@ -2800,13 +2837,15 @@ mono_arch_output_basic_block (MonoCompile *cfg, MonoBasicBlock *bb)
                        ia64_stfd_hint (code, ins->inst_destbasereg, ins->sreg1, 0);
                        break;
                case OP_STORER4_MEMBASE_REG:
-                       ia64_stfs_hint (code, ins->inst_destbasereg, ins->sreg1, 0);
+                       ia64_fnorm_s_sf (code, FP_SCRATCH_REG, ins->sreg1, 0);
+                       ia64_stfs_hint (code, ins->inst_destbasereg, FP_SCRATCH_REG, 0);
                        break;
                case OP_LOADR8_MEMBASE:
                        ia64_ldfd (code, ins->dreg, ins->inst_basereg);
                        break;
                case OP_LOADR4_MEMBASE:
                        ia64_ldfs (code, ins->dreg, ins->inst_basereg);
+                       ia64_fnorm_d_sf (code, ins->dreg, ins->dreg, 0);
                        break;
                case CEE_CONV_R4:
                        ia64_setf_sig (code, ins->dreg, ins->sreg1);
@@ -2852,24 +2891,16 @@ mono_arch_output_basic_block (MonoCompile *cfg, MonoBasicBlock *bb)
                case CEE_CKFINITE:
                        /* Quiet NaN */
                        ia64_fclass_m (code, 6, 7, ins->sreg1, 0x080);
-                       add_patch_info (cfg, code,
-                                                                MONO_PATCH_INFO_EXC, "ArithmeticException");
-                       ia64_br_cond_pred (code, 6, 0);
+                       emit_cond_system_exception (cfg, code, "ArithmeticException", 6);
                        /* Signaling NaN */
                        ia64_fclass_m (code, 6, 7, ins->sreg1, 0x040);
-                       add_patch_info (cfg, code,
-                                                                MONO_PATCH_INFO_EXC, "ArithmeticException");
-                       ia64_br_cond_pred (code, 6, 0);
+                       emit_cond_system_exception (cfg, code, "ArithmeticException", 6);
                        /* Positive infinity */
                        ia64_fclass_m (code, 6, 7, ins->sreg1, 0x021);
-                       add_patch_info (cfg, code,
-                                                                MONO_PATCH_INFO_EXC, "ArithmeticException");
-                       ia64_br_cond_pred (code, 6, 0);
+                       emit_cond_system_exception (cfg, code, "ArithmeticException", 6);
                        /* Negative infinity */
                        ia64_fclass_m (code, 6, 7, ins->sreg1, 0x022);
-                       add_patch_info (cfg, code,
-                                                                MONO_PATCH_INFO_EXC, "ArithmeticException");
-                       ia64_br_cond_pred (code, 6, 0);
+                       emit_cond_system_exception (cfg, code, "ArithmeticException", 6);
                        break;
 
                /* Calls */
@@ -3086,19 +3117,32 @@ mono_arch_output_basic_block (MonoCompile *cfg, MonoBasicBlock *bb)
                        MonoInst *spvar = mono_find_spvar_for_region (cfg, bb->region);
 
                        /* 
-                        * We might be called by call_filter, in which case the
-                        * the register stack is not set up correctly. So do it now.
-                        * Allocate a stack frame and set the fp register from the value 
-                        * passed in by the caller.
-                        * R15 is used since it is writable using libunwind.
+                        * R15 determines our caller. It is used since it is writable using
+                        * libunwind.
                         * R15 == 0 means we are called by OP_CALL_HANDLER or via resume_context ()
+                        * R15 != 0 means we are called by call_filter ().
                         */
                        ia64_codegen_set_one_ins_per_bundle (code, TRUE);
                        ia64_cmp_eq (code, 6, 7, IA64_R15, IA64_R0);
-                       /* Alloc is not predictable so we have to use a branch */
-                       ia64_br_cond_pred (code, 6, 3);
+
+                       ia64_br_cond_pred (code, 6, 6);
+
+                       /*
+                        * Called by call_filter:
+                        * Allocate a new stack frame, and set the fp register from the 
+                        * value passed in by the caller.
+                        * We allocate a similar frame as is done by the prolog, so
+                        * if an exception is thrown while executing the filter, the
+                        * unwinder can unwind through the filter frame using the unwind
+                        * info for the prolog. 
+                        */
                        ia64_alloc (code, cfg->arch.reg_saved_ar_pfs, cfg->arch.reg_local0 - cfg->arch.reg_in0, cfg->arch.reg_out0 - cfg->arch.reg_local0, cfg->arch.n_out_regs, 0);
+                       ia64_mov_from_br (code, cfg->arch.reg_saved_b0, IA64_B0);
+                       ia64_mov (code, cfg->arch.reg_saved_sp, IA64_SP);
                        ia64_mov (code, cfg->frame_reg, IA64_R15);
+                       /* Signal to endfilter that we are called by call_filter */
+                       ia64_mov (code, GP_SCRATCH_REG, IA64_R0);
+
                        /* Save the return address */
                        ia64_adds_imm (code, GP_SCRATCH_REG2, spvar->inst_offset, cfg->frame_reg);
                        ia64_st8_hint (code, GP_SCRATCH_REG2, GP_SCRATCH_REG, 0);
@@ -3106,23 +3150,26 @@ mono_arch_output_basic_block (MonoCompile *cfg, MonoBasicBlock *bb)
 
                        break;
                }
-               case CEE_ENDFINALLY: {
-                       MonoInst *spvar = mono_find_spvar_for_region (cfg, bb->region);
-                       /* Return the saved arp_pfs value to call_filter */
-                       ia64_mov (code, IA64_R9, cfg->arch.reg_saved_ar_pfs);
-                       ia64_adds_imm (code, GP_SCRATCH_REG, spvar->inst_offset, cfg->frame_reg);
-                       ia64_ld8_hint (code, GP_SCRATCH_REG, GP_SCRATCH_REG, 0);
-                       ia64_mov_to_br (code, IA64_B6, GP_SCRATCH_REG);
-                       ia64_br_cond_reg (code, IA64_B6);
-                       break;
-               }
+               case CEE_ENDFINALLY:
                case OP_ENDFILTER: {
-                       /* FIXME: Return the value */
+                       /* FIXME: Return the value in ENDFILTER */
                        MonoInst *spvar = mono_find_spvar_for_region (cfg, bb->region);
-                       /* Return the saved arp_pfs value to call_filter */
-                       ia64_mov (code, IA64_R9, cfg->arch.reg_saved_ar_pfs);
+
+                       /* Load the return address */
                        ia64_adds_imm (code, GP_SCRATCH_REG, spvar->inst_offset, cfg->frame_reg);
                        ia64_ld8_hint (code, GP_SCRATCH_REG, GP_SCRATCH_REG, 0);
+
+                       /* Test caller */
+                       ia64_cmp_eq (code, 6, 7, GP_SCRATCH_REG, IA64_R0);
+                       ia64_br_cond_pred (code, 7, 4);
+
+                       /* Called by call_filter */
+                       /* Pop frame */
+                       ia64_mov_to_ar_i (code, IA64_PFS, cfg->arch.reg_saved_ar_pfs);
+                       ia64_mov_to_br (code, IA64_B0, cfg->arch.reg_saved_b0);
+                       ia64_br_ret_reg (code, IA64_B0);                        
+
+                       /* Called by CALL_HANDLER */
                        ia64_mov_to_br (code, IA64_B6, GP_SCRATCH_REG);
                        ia64_br_cond_reg (code, IA64_B6);
                        break;
@@ -3446,9 +3493,10 @@ ia64_analyze_deps (Ia64CodegenState *code, int *deps_start, int *stops)
 static void
 ia64_real_emit_bundle (Ia64CodegenState *code, int *deps_start, int *stops, int n, guint64 template, guint64 ins1, guint64 ins2, guint64 ins3, guint8 nops)
 {
-       g_assert (n <= code->nins);
        int stop_pos, i, deps_to_shift, dep_shift;
 
+       g_assert (n <= code->nins);
+
        // if (n > 1) printf ("FOUND: %ld.\n", template);
 
        ia64_emit_bundle_template (code, template, ins1, ins2, ins3);
@@ -3828,6 +3876,8 @@ mono_arch_patch_code (MonoMethod *method, MonoDomain *domain, guint8 *code, Mono
 
                target = mono_resolve_patch_target (method, domain, code, patch_info, run_cctors);
 
+               if (patch_info->type == MONO_PATCH_INFO_NONE)
+                       continue;
                if (mono_compile_aot) {
                        NOT_IMPLEMENTED;
                }
@@ -3890,8 +3940,10 @@ mono_arch_emit_prolog (MonoCompile *cfg)
        ia64_mov_from_br (code, cfg->arch.reg_saved_b0, IA64_B0);
 
        if ((alloc_size || cinfo->stack_usage) && !cfg->arch.omit_fp) {
-               ia64_unw_save_reg (code, UNW_IA64_SP, UNW_IA64_GR + cfg->frame_reg);
-               ia64_mov (code, cfg->frame_reg, IA64_SP);
+               ia64_unw_save_reg (code, UNW_IA64_SP, UNW_IA64_GR + cfg->arch.reg_saved_sp);
+               ia64_mov (code, cfg->arch.reg_saved_sp, IA64_SP);
+               if (cfg->frame_reg != cfg->arch.reg_saved_sp)
+                       ia64_mov (code, cfg->frame_reg, IA64_SP);
        }
 
        if (alloc_size) {
@@ -4155,15 +4207,12 @@ void
 mono_arch_emit_exceptions (MonoCompile *cfg)
 {
        MonoJumpInfo *patch_info;
-       int nthrows;
+       int i, nthrows;
        Ia64CodegenState code;
        gboolean empty = TRUE;
        //unw_dyn_region_info_t *r_exceptions;
-
-       /*
        MonoClass *exc_classes [16];
        guint8 *exc_throw_start [16], *exc_throw_end [16];
-       */
        guint32 code_size = 0;
 
        /* Compute needed space */
@@ -4199,34 +4248,77 @@ mono_arch_emit_exceptions (MonoCompile *cfg)
                        MonoClass *exc_class;
                        guint8* throw_ip;
                        guint8* buf;
+                       guint64 exc_token_index;
 
                        exc_class = mono_class_from_name (mono_defaults.corlib, "System", patch_info->data.name);
                        g_assert (exc_class);
+                       exc_token_index = mono_metadata_token_index (exc_class->type_token);
                        throw_ip = cfg->native_code + patch_info->ip.i;
 
                        ia64_begin_bundle (code);
 
                        ia64_patch (cfg->native_code + patch_info->ip.i, code.buf);
 
-                       ia64_movl (code, cfg->arch.reg_out0 + 0, exc_class->type_token);
+                       /* Find a throw sequence for the same exception class */
+                       for (i = 0; i < nthrows; ++i)
+                               if (exc_classes [i] == exc_class)
+                                       break;
 
-                       ia64_begin_bundle (code);
+                       if (i < nthrows) {
+                               gint64 offset = exc_throw_end [i] - 16 - throw_ip;
 
-                       patch_info->data.name = "mono_arch_throw_corlib_exception";
-                       patch_info->type = MONO_PATCH_INFO_INTERNAL_METHOD;
-                       patch_info->ip.i = code.buf - cfg->native_code;
+                               if (ia64_is_adds_imm (offset))
+                                       ia64_adds_imm (code, cfg->arch.reg_out0 + 1, offset, IA64_R0);
+                               else
+                                       ia64_movl (code, cfg->arch.reg_out0 + 1, offset);
 
-                       /* Indirect call */
-                       ia64_movl (code, GP_SCRATCH_REG, 0);
-                       ia64_ld8_inc_imm (code, GP_SCRATCH_REG2, GP_SCRATCH_REG, 8);
-                       ia64_mov_to_br (code, IA64_B6, GP_SCRATCH_REG2);
-                       ia64_ld8 (code, IA64_GP, GP_SCRATCH_REG);
+                               buf = code.buf + code.nins;
+                               ia64_br_cond_pred (code, 0, 0);
+                               ia64_begin_bundle (code);
+                               ia64_patch (buf, exc_throw_start [i]);
 
-                       /* Compute the offset */
-                       buf = code.buf + 32;
-                       ia64_movl (code, cfg->arch.reg_out0 + 1, buf - throw_ip);
+                               patch_info->type = MONO_PATCH_INFO_NONE;
+                       }
+                       else {
+                               /* Arg1 */
+                               buf = code.buf;
+                               ia64_movl (code, cfg->arch.reg_out0 + 1, 0);
 
-                       ia64_br_call_reg (code, IA64_B0, IA64_B6);
+                               ia64_begin_bundle (code);
+
+                               if (nthrows < 16) {
+                                       exc_classes [nthrows] = exc_class;
+                                       exc_throw_start [nthrows] = code.buf;
+                               }
+
+                               /* Arg2 */
+                               if (ia64_is_adds_imm (exc_token_index))
+                                       ia64_adds_imm (code, cfg->arch.reg_out0 + 0, exc_token_index, IA64_R0);
+                               else
+                                       ia64_movl (code, cfg->arch.reg_out0 + 0, exc_token_index);
+
+                               patch_info->data.name = "mono_arch_throw_corlib_exception";
+                               patch_info->type = MONO_PATCH_INFO_INTERNAL_METHOD;
+                               patch_info->ip.i = code.buf + code.nins - cfg->native_code;
+
+                               /* Indirect call */
+                               ia64_movl (code, GP_SCRATCH_REG, 0);
+                               ia64_ld8_inc_imm (code, GP_SCRATCH_REG2, GP_SCRATCH_REG, 8);
+                               ia64_mov_to_br (code, IA64_B6, GP_SCRATCH_REG2);
+                               ia64_ld8 (code, IA64_GP, GP_SCRATCH_REG);
+
+                               ia64_br_call_reg (code, IA64_B0, IA64_B6);
+
+                               /* Patch up the throw offset */
+                               ia64_begin_bundle (code);
+
+                               ia64_patch (buf, (gpointer)(code.buf - 16 - throw_ip));
+
+                               if (nthrows < 16) {
+                                       exc_throw_end [nthrows] = code.buf;
+                                       nthrows ++;
+                               }
+                       }
 
                        empty = FALSE;
                        break;
@@ -4603,7 +4695,7 @@ mono_arch_emit_this_vret_args (MonoCompile *cfg, MonoCallInst *inst, int this_re
                        vtarg->dreg = mono_regstate_next_int (cfg->rs);
                        mono_bblock_add_inst (cfg->cbb, vtarg);
 
-                       mono_call_inst_add_outarg_reg (call, vtarg->dreg, out_reg, FALSE);
+                       mono_call_inst_add_outarg_reg (cfg, call, vtarg->dreg, out_reg, FALSE);
 
                        out_reg ++;
                }
@@ -4620,7 +4712,7 @@ mono_arch_emit_this_vret_args (MonoCompile *cfg, MonoCallInst *inst, int this_re
                this->dreg = mono_regstate_next_int (cfg->rs);
                mono_bblock_add_inst (cfg->cbb, this);
 
-               mono_call_inst_add_outarg_reg (call, this->dreg, out_reg, FALSE);
+               mono_call_inst_add_outarg_reg (cfg, call, this->dreg, out_reg, FALSE);
        }
 }