X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbeabi.h;h=b307fe91773700c164d9c4929cf44eac56e33172;hb=ef63002fcb03a29f1b4e041c067d0fa8546bed96;hp=004abc14ef1bea845a354792a92e72333ec99832;hpb=fc077be03c7f6a4a991284db654dcae0039c8ac5;p=libfirm diff --git a/ir/be/beabi.h b/ir/be/beabi.h index 004abc14e..b307fe917 100644 --- a/ir/be/beabi.h +++ b/ir/be/beabi.h @@ -1,10 +1,30 @@ +/* + * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved. + * + * This file is part of libFirm. + * + * This file may be distributed and/or modified under the terms of the + * GNU General Public License version 2 as published by the Free Software + * Foundation and appearing in the file LICENSE.GPL included in the + * packaging of this file. + * + * Licensees holding valid libFirm Professional Edition licenses may use + * this file in accordance with the libFirm Commercial License. + * Agreement provided with the Software. + * + * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE + * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE. + */ /** - * Backend ABI implementation. + * @file + * @brief Backend ABI implementation. + * @author Sebastian Hack + * @version $Id$ */ - -#ifndef _BEABI_H -#define _BEABI_H +#ifndef FIRM_BE_BEABI_H +#define FIRM_BE_BEABI_H #include "firm_types.h" @@ -13,11 +33,9 @@ #include "bitset.h" #include "be.h" +#include "beirg.h" #include "bearch.h" -#include "beabi_t.h" - -/** Flag: if set, try to omit the frame pointer if alled by the backend */ -extern int be_omit_fp; +#include "beabi.h" struct _be_abi_call_flags_bits_t { unsigned left_to_right : 1; /**< Arguments are from left to right. */ @@ -57,23 +75,17 @@ struct _be_abi_callbacks_t { */ ir_type *(*get_between_type)(void *self); - /** - * Put all registers which are saved by the prologue/epilogue in a set. - * @param self The callback object. - * @param regs A set. - */ - void (*regs_saved_by_me)(void *self, pset *regs); - /** * Generate the prologue. - * @param self The callback object. - * @param mem A pointer to the mem node. Update this if you define new memory. - * @param reg_map A mapping mapping all callee_save/ignore/parameter registers to their defining nodes. - * @return The register which shall be used as a stack frame base. + * @param self The callback object. + * @param mem A pointer to the mem node. Update this if you define new memory. + * @param reg_map A map mapping all callee_save/ignore/parameter registers to their defining nodes. + * @param stack_bias Points to the current stack bias, can be modified if needed. + * @return The register which shall be used as a stack frame base. * * All nodes which define registers in @p reg_map must keep @p reg_map current. */ - const arch_register_t *(*prologue)(void *self, ir_node **mem, pmap *reg_map); + const arch_register_t *(*prologue)(void *self, ir_node **mem, pmap *reg_map, int *stack_bias); /** * Generate the epilogue. @@ -96,8 +108,46 @@ struct _be_abi_callbacks_t { */ void be_abi_call_set_flags(be_abi_call_t *call, be_abi_call_flags_t flags, const be_abi_callbacks_t *cb); -void be_abi_call_param_stack(be_abi_call_t *call, int pos, unsigned alignment, unsigned space_before, unsigned space_after); +/** + * Sets the number of bytes the stackframe is shrinked by the callee on return + */ +void be_abi_call_set_pop(be_abi_call_t *call, int pop); + +/** + * Set register class for call address. + * @param call The call. + * @param cls The register class for call address. + */ +void be_abi_call_set_call_address_reg_class(be_abi_call_t *call, const arch_register_class_t *cls); + +/** + * Record the that ABI transmits call argument pos on the stack. Modifies the abi object. + * + * @param call the abi call object + * @param pos the parameter position + * @param load_mode load the parameter with this mode (if the parameter mode is different from this mode a Conv is inserted) + * @param alignment stack alignment for the parameter on the current architecture + * @param space_before size of allocated additional space before the parameter + * @param space_after size of allocated additional space after the parameter + */ +void be_abi_call_param_stack(be_abi_call_t *call, int pos, ir_mode *load_mode, unsigned alignment, unsigned space_before, unsigned space_after); + +/** + * Record the that ABI transmits call argument pos in the given register. + * + * @param call the abi call object + * @param pos the parameter position + * @param reg the register used + */ void be_abi_call_param_reg(be_abi_call_t *call, int pos, const arch_register_t *reg); + +/** + * Record the that ABI transmits return value pos in the given register. + * + * @param call the abi call object + * @param pos the return value position + * @param reg the register used + */ void be_abi_call_res_reg(be_abi_call_t *call, int pos, const arch_register_t *reg); /** @@ -117,14 +167,67 @@ be_abi_call_flags_t be_abi_call_get_flags(const be_abi_call_t *call); ir_type *be_abi_call_get_method_type(const be_abi_call_t *call); be_abi_irg_t *be_abi_introduce(be_irg_t *bi); + +/** + * Fix the stack bias for all nodes accessing the stack frame using the + * stack pointer. + */ void be_abi_fix_stack_bias(be_abi_irg_t *env); -void be_abi_fix_stack_nodes(be_abi_irg_t *env); void be_abi_free(be_abi_irg_t *abi); +/** + * Rewire all stack modifying nodes and their users to assure SSA property. + * @param env The abi + */ +void be_abi_fix_stack_nodes(be_abi_irg_t *env); + +/** + * Put the registers which are forbidden specifically for this IRG in a bitset. + */ void be_abi_put_ignore_regs(be_abi_irg_t *abi, const arch_register_class_t *cls, bitset_t *bs); + +void be_abi_set_non_ignore_regs(be_abi_irg_t *abi, const arch_register_class_t *cls, unsigned *raw_bitset); + ir_node *be_abi_get_callee_save_irn(be_abi_irg_t *abi, const arch_register_t *reg); +ir_node *be_abi_get_ignore_irn(be_abi_irg_t *abi, const arch_register_t *reg); #define be_abi_reg_map_get(map, reg) pmap_get((map), (void *) (reg)) #define be_abi_reg_map_set(map, reg, irn) pmap_insert((map), (void *) (reg), (irn)) -#endif +/** The number of parts of the stack layout. */ +#define N_FRAME_TYPES 3 + +/** + * This type describes the stack layout. + * The stack is divided into 3 parts: + * - arg_type: A struct type describing the stack arguments and it's order. + * - between_type: A struct type describing the stack layout between arguments + * and frame type. In architectures that put the return address + * automatically on the stack, the return address is put here. + * - frame_type: A class type describing the frame layout. + */ +struct _be_stack_layout_t { + ir_type *arg_type; /**< A type describing the stack argument layout. */ + ir_type *between_type; /**< A type describing the "between" layout. */ + ir_type *frame_type; /**< The frame type. */ + + ir_type *order[N_FRAME_TYPES]; /**< arg, between and frame types ordered. */ + + ir_entity **param_map; /**< An array mapping type parameters to arg_type entries */ + int initial_offset; /**< the initial difference between stack pointer and frame pointer */ + int initial_bias; /**< the initial stack bias */ + int stack_dir; /**< -1 for decreasing, 1 for increasing. */ +}; + +/** + * Returns the stack layout from a abi environment. + */ +const be_stack_layout_t *be_abi_get_stack_layout(const be_abi_irg_t *abi); + +/** + * Returns non-zero if the ABI has omitted the frame pointer in + * the current graph. + */ +int be_abi_omit_fp(const be_abi_irg_t *abi); + +#endif /* FIRM_BE_BEABI_H */