X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbeabi.h;h=595c3311c11bb74c7de28d5cb0ab5e729f9f44dc;hb=ff94a727febe4d155e1e807b57179df47f8fd489;hp=8aa69d681a55bd80e371d7918b779fb3505916eb;hpb=eee467d6f200c59f7b7ad5f8f8f38d96ebf6b5e4;p=libfirm diff --git a/ir/be/beabi.h b/ir/be/beabi.h index 8aa69d681..595c3311c 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" @@ -13,10 +33,11 @@ #include "bitset.h" #include "be.h" +#include "beirg.h" #include "bearch.h" -#include "beabi_t.h" +#include "beabi.h" -struct _be_abi_call_flags_bits_t { +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. */ @@ -26,20 +47,19 @@ struct _be_abi_call_flags_bits_t { unsigned frame_is_setup_on_call : 1; /**< Set to one, if there is already enough room on the stack for call args. */ }; -union _be_abi_call_flags_t { +union be_abi_call_flags_t { be_abi_call_flags_bits_t bits; unsigned val; }; -struct _be_abi_callbacks_t { +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); + void *(*init)(const be_abi_call_t *call, ir_graph *irg); /** * Destroy the callback object. @@ -54,23 +74,17 @@ 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. @@ -93,6 +107,11 @@ 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); +/** + * 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. @@ -100,9 +119,51 @@ void be_abi_call_set_flags(be_abi_call_t *call, be_abi_call_flags_t flags, const */ 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); +/** + * The ABI can change when we call a function vs. when we have + * been called. + */ +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; + +/** + * 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, be_abi_context_t context); + +/** + * 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, + be_abi_context_t context); + +/** + * 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, + be_abi_context_t context); /** * Get the flags of a ABI call object. @@ -120,61 +181,21 @@ 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); -void be_abi_fix_stack_bias(be_abi_irg_t *env); -void be_abi_free(be_abi_irg_t *abi); +be_abi_irg_t *be_abi_introduce(ir_graph *irg); -/** - * Rewire all stack modifying nodes and their users to assure SSA property. - * @param env The abi - * @param lv Liveness object, so the liveness of changed and newly introduces nodes - * can be recomputed. Maybe NULL (no liveness information update then) - */ -void be_abi_fix_stack_nodes(be_abi_irg_t *env, be_lv_t *lv); +void be_abi_free(ir_graph *irg); /** * 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); -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)) -#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 - * - 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. */ - - 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 */ -}; - -/** - * 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 /* _BEABI_H */ +#endif