X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbeabi.h;h=54e4e5acbef178d9791949201391a13864d77a4c;hb=0f758eda285960164141e7e2d81f00f898f2ae7e;hp=e5b23ee276768ccf46ec8e2928917bb508d6b8f8;hpb=863d31d7a5c8210432fef88b30fc3e8353131538;p=libfirm diff --git a/ir/be/beabi.h b/ir/be/beabi.h index e5b23ee27..54e4e5acb 100644 --- a/ir/be/beabi.h +++ b/ir/be/beabi.h @@ -1,180 +1,119 @@ +/* + * 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 */ +#ifndef FIRM_BE_BEABI_H +#define FIRM_BE_BEABI_H -#ifndef _BEABI_H -#define _BEABI_H +#include +#include "be_types.h" #include "firm_types.h" -#include "pset.h" -#include "pmap.h" -#include "bitset.h" - -#include "be.h" -#include "bearch.h" -#include "beabi_t.h" - -struct _be_abi_call_flags_bits_t { - unsigned left_to_right : 1; /**< Arguments are from left to right. */ - unsigned store_args_sequential : 1; /**< Use sequential stores for arguments. */ - unsigned try_omit_fp : 1; /**< Try to omit the frame pointer. */ - unsigned fp_free : 1; /**< The function can use any register as frame pointer. */ - unsigned call_has_imm : 1; /**< A call can take the callee's address as an immediate. */ - unsigned irg_is_leaf : 1; /**< 1, if the IRG is a leaf function. */ - unsigned frame_is_setup_on_call : 1; /**< Set to one, if there is already enough room on the stack for call args. */ +struct be_abi_call_flags_t { + bool try_omit_fp : 1; /**< Try to omit the frame pointer. */ + bool call_has_imm : 1; /**< A call can take the callee's address as an + immediate. */ }; -union _be_abi_call_flags_t { - be_abi_call_flags_bits_t bits; - unsigned val; -}; - -struct _be_abi_callbacks_t { - /** - * Initialize the callback object. - * @param call The call object. - * @param aenv The architecture environment. - * @param irg The graph with the method. - * @return Some pointer. This pointer is passed to all other callback functions as self object. - */ - void *(*init)(const be_abi_call_t *call, const arch_env_t *aenv, ir_graph *irg); - - /** - * Destroy the callback object. - * @param self The callback object. - */ - void (*done)(void *self); - +struct be_abi_callbacks_t { /** * Get the between type for that call. * @param self The callback object. * @return The between type of for that call. */ - 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 map mapping all callee_save/ignore/parameter registers to their defining nodes. - * @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); - - /** - * Generate the epilogue. - * @param self The callback object. - * @param mem Memory one can attach to. - * @param reg_map A mapping mapping all callee_save/ignore/return registers to their defining nodes. - * - * All nodes which define registers in @p reg_map must keep @p reg_map current. - * Also, the @p mem variable must be updated, if memory producing nodes are inserted. - */ - void (*epilogue)(void *self, ir_node *bl, ir_node **mem, pmap *reg_map); + ir_type *(*get_between_type)(ir_graph *irg); }; /** * Set the flags for a call. * @param call The call. - * @param flags Some flags to be set. + * @param flags Some flags to be set. * @param cb The call callbacks for that call. * @note The ABI phase might change the flags due to analysis. */ void be_abi_call_set_flags(be_abi_call_t *call, be_abi_call_flags_t flags, const be_abi_callbacks_t *cb); /** - * 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); - -void be_abi_call_param_stack(be_abi_call_t *call, int pos, unsigned alignment, unsigned space_before, unsigned space_after); -void be_abi_call_param_reg(be_abi_call_t *call, int pos, const arch_register_t *reg); -void be_abi_call_res_reg(be_abi_call_t *call, int pos, const arch_register_t *reg); - -/** - * Get the flags of a ABI call object. - * Note that the flags must not be the same as set by be_abi_call_set_flags(). Analysis may have - * altered several flags, so getting them from the call object is always a good idea. - * @param call The call object. - * @return The flags. + * Sets the number of bytes the stackframe is shrinked by the callee on return */ -be_abi_call_flags_t be_abi_call_get_flags(const be_abi_call_t *call); +void be_abi_call_set_pop(be_abi_call_t *call, int pop); /** - * Get the method type of an ABI call object. - * @param call The call object. - * @return The method type for that call object. + * The ABI can change when we call a function vs. when we have + * been called. */ -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); -void be_abi_fix_stack_bias(be_abi_irg_t *env); -void be_abi_free(be_abi_irg_t *abi); +typedef enum { + ABI_CONTEXT_CALLEE = 1 << 0, + ABI_CONTEXT_CALLER = 1 << 1, + ABI_CONTEXT_BOTH = ABI_CONTEXT_CALLEE | ABI_CONTEXT_CALLER +} be_abi_context_t; /** - * Rewire all stack modifying nodes and their users to assure SSA property. - * @param env The abi + * 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_fix_stack_nodes(be_abi_irg_t *env); +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, be_abi_context_t context); /** - * Put the registers which are forbidden specifically for this IRG in a bitset. + * 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_put_ignore_regs(be_abi_irg_t *abi, const arch_register_class_t *cls, bitset_t *bs); - -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); -ir_node *be_abi_get_start_barrier(be_abi_irg_t *abi); - -#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)) - -/** The number of parts of the stack layout. */ -#define N_FRAME_TYPES 3 +void be_abi_call_param_reg(be_abi_call_t *call, int pos, + const arch_register_t *reg, + be_abi_context_t context); /** - * 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 + * 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 */ -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. */ - - int initial_offset; - int stack_dir; /**< -1 for decreasing, 1 for increasing. */ - ir_entity **param_map; /**< An array mapping type parameters to arg_type entries */ -}; +void be_abi_call_res_reg(be_abi_call_t *call, int pos, + const arch_register_t *reg, + be_abi_context_t context); /** - * Returns the stack layout from a abi environment. + * Get the flags of a ABI call object. + * Note that the flags must not be the same as set by be_abi_call_set_flags(). Analysis may have + * altered several flags, so getting them from the call object is always a good idea. + * @param call The call object. + * @return The flags. */ -const be_stack_layout_t *be_abi_get_stack_layout(const be_abi_irg_t *abi); +be_abi_call_flags_t be_abi_call_get_flags(const be_abi_call_t *call); -/** - * 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); +void be_abi_introduce(ir_graph *irg); -#endif /* _BEABI_H */ +#endif