/* * Initialize the local value to 0. */ static int _ILJitLocalInit(ILJITCoder *coder, ILJitLocalSlot *slot) { if((slot->flags & _IL_JIT_VALUE_INITIALIZED) == 0) { ILJitType type = jit_value_get_type(slot->value); if(!jit_type_is_struct(type)) { int typeKind = jit_type_get_kind(type); ILJitValue constant = 0; if(_JIT_TYPEKIND_IS_FLOAT(typeKind)) { if(!(constant = jit_value_create_nfloat_constant(coder->jitFunction, type, (jit_nfloat)0))) { return 0; } jit_insn_store(coder->jitFunction, slot->value, constant); } else { if(_JIT_TYPEKIND_IS_LONG(typeKind)) { if(!(constant = jit_value_create_long_constant(coder->jitFunction, type, (jit_long)0))) { return 0; } jit_insn_store(coder->jitFunction, slot->value, constant); } else { if(!(constant = jit_value_create_nint_constant(coder->jitFunction, type, (jit_nint)0))) { return 0; } jit_insn_store(coder->jitFunction, slot->value, constant); } } } slot->flags |= _IL_JIT_VALUE_INITIALIZED; } return 1; }
int _jit_create_call_return_insns (jit_function_t func, jit_type_t signature, jit_value_t *args, unsigned int num_args, jit_value_t return_value, int is_nested) { jit_nint pop_bytes; unsigned int size; jit_type_t return_type; int ptr_return; /* Calculate the number of bytes that we need to pop */ return_type = jit_type_normalize(jit_type_get_return(signature)); ptr_return = jit_type_return_via_pointer(return_type); #if JIT_APPLY_X86_FASTCALL == 1 if(jit_type_get_abi(signature) == jit_abi_stdcall || jit_type_get_abi(signature) == jit_abi_thiscall|| jit_type_get_abi(signature) == jit_abi_fastcall) { /* STDCALL, THISCALL and FASTCALL functions pop their own arguments */ pop_bytes = 0; } else #endif { pop_bytes = 0; while(num_args > 0) { --num_args; size = jit_type_get_size(jit_value_get_type(args[num_args])); pop_bytes += ROUND_STACK(size); } #if JIT_APPLY_X86_POP_STRUCT_RETURN == 1 if(ptr_return && is_nested) { /* Note: we only need this for nested functions, because regular functions will pop the structure return for us */ pop_bytes += sizeof(void *); } #else if(ptr_return) { pop_bytes += sizeof(void *); } #endif if(is_nested) { pop_bytes += sizeof(void *); } } /* Pop the bytes from the system stack */ if(pop_bytes > 0) { if(!jit_insn_defer_pop_stack(func, pop_bytes)) { return 0; } } /* Bail out now if we don't need to worry about return values */ if(!return_value || ptr_return) { return 1; } /* Structure values must be flushed into the frame, and everything else ends up in a register */ if(jit_type_is_struct(return_type) || jit_type_is_union(return_type)) { if(!jit_insn_flush_struct(func, return_value)) { return 0; } } else if(return_type == jit_type_float32 || return_type == jit_type_float64 || return_type == jit_type_nfloat || jit_type_get_kind(return_type) == JIT_TYPE_FLOAT32 || jit_type_get_kind(return_type) == JIT_TYPE_FLOAT64 || jit_type_get_kind(return_type) == JIT_TYPE_NFLOAT ) { if(!jit_insn_return_reg(func, return_value, X86_REG_ST0)) { return 0; } } else if(return_type->kind != JIT_TYPE_VOID) { if(!jit_insn_return_reg(func, return_value, X86_REG_EAX)) { return 0; } } /* Everything is back where it needs to be */ return 1; }