-/**
- * Backend ABI implementation.
+/*
+ * This file is part of libFirm.
+ * Copyright (C) 2012 University of Karlsruhe.
*/
-#ifndef FIRM_BEABI_H
-#define FIRM_BEABI_H
-
-#include "firm_types.h"
-#include "pset.h"
-#include "pmap.h"
-#include "bitset.h"
+/**
+ * @file
+ * @brief Backend ABI implementation.
+ * @author Sebastian Hack
+ */
+#ifndef FIRM_BE_BEABI_H
+#define FIRM_BE_BEABI_H
-#include "be.h"
-#include "beirg.h"
-#include "bearch.h"
-#include "beabi_t.h"
+#include <stdbool.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. */
-};
+#include "be_types.h"
+#include "firm_types.h"
-union _be_abi_call_flags_t {
- be_abi_call_flags_bits_t bits;
- unsigned val;
+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. */
};
-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
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