X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbeabi.h;h=aa3f05901d74115ed6a80d0773e71d5fe16f22b6;hb=712cea35fe399ae20e3a33eb9bf81360b5000cf3;hp=389cb75e1983532e05a1d4f7c24cce333fbfec7b;hpb=70fdc777fca3a99051e57485779cbaf9228bbdd4;p=libfirm diff --git a/ir/be/beabi.h b/ir/be/beabi.h index 389cb75e1..aa3f05901 100644 --- a/ir/be/beabi.h +++ b/ir/be/beabi.h @@ -6,30 +6,126 @@ #ifndef _BEABI_H #define _BEABI_H +#include "firm_types.h" + +#include "pset.h" +#include "pmap.h" +#include "bitset.h" + #include "be.h" #include "bearch.h" #include "beabi_t.h" -typedef enum { - BE_ABI_NONE = 0, - BE_ABI_LEFT_TO_RIGHT = 1, /**< Arguments are from left to right. */ - BE_ABI_USE_PUSH = 2, /**< Use sequential stores for arguments. */ - BE_ABI_TRY_OMIT_FRAME_POINTER = 4, /**< Try to omit the frame pointer. */ - BE_ABI_FRAME_POINTER_DEDICATED = 8 /**< If the function wants a frame pointer, - use the one of the architecture, else - an arbitrary register is used. */ -} be_abi_call_flags_t; - -void be_abi_call_set_flags(be_abi_call_t *call, be_abi_call_flags_t flags, unsigned arg_gap); -void be_abi_call_param_stack(be_abi_call_t *call, int pos); +/** Flag: if set, try to omit the frame pointer if alled by the backend */ +extern int be_omit_fp; + +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. */ +}; + +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); + + /** + * 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 mapping 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); +}; + +/** + * Set the flags for a call. + * @param call The call. + * @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); + +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. + */ +be_abi_call_flags_t be_abi_call_get_flags(const be_abi_call_t *call); + +/** + * Get the method type of an ABI call object. + * @param call The call object. + * @return The method type for that call object. + */ +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_fix_stack_nodes(be_abi_irg_t *env); void be_abi_free(be_abi_irg_t *abi); +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); +#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