3 * Backend ABI implementation.
10 #include "firm_types.h"
16 struct _be_abi_call_flags_bits_t {
17 unsigned left_to_right : 1; /**< Arguments are from left to right. */
18 unsigned store_args_sequential : 1; /**< Use sequential stores for arguments. */
19 unsigned try_omit_fp : 1; /**< Try to omit the frame pointer. */
20 unsigned fp_free : 1; /**< The function can use any register as frame pointer. */
21 unsigned call_has_imm : 1; /**< A call can take the callee's address as an immediate. */
24 union _be_abi_call_flags_t {
25 be_abi_call_flags_bits_t bits;
29 struct _be_abi_callbacks_t {
31 * Initialize the callback object.
32 * @param call The call object.
33 * @param isa The current ISA.
34 * @param irg The graph with the method.
35 * @return Some pointer. This pointer is passed to all other callback functions as self object.
37 void *(*init)(const be_abi_call_t *call, const arch_isa_t *isa, ir_graph *irg);
40 * Destroy the callback object.
41 * @param self The callback object.
43 void (*done)(void *self);
46 * Get the between type for that call.
47 * @param self The callback object.
48 * @return The between type of for that call.
50 ir_type *(*get_between_type)(void *self);
53 * Put all registers which are saved by the prologue/epilogue in a set.
54 * @param self The callback object.
57 void (*regs_saved_by_me)(void *self, pset *regs);
60 * Generate the prologue.
61 * @param self The callback object.
62 * @param reg_map A mapping mapping all callee_save/ignore/parameter registers to their defining nodes.
63 * @return The register which shall be used as a stack frame base.
65 * All nodes which define registers in @p reg_map must keep @p reg_map current.
67 const arch_register_t *(*prologue)(void *self, pmap *reg_map);
70 * Generate the epilogue.
71 * @param self The callback object.
72 * @param mem Memory one can attach to.
73 * @param reg_map A mapping mapping all callee_save/ignore/return registers to their defining nodes.
75 * All nodes which define registers in @p reg_map must keep @p reg_map current.
76 * Also, the @p mem variable must be updated, if memory producing nodes are inserted.
78 void (*epilogue)(void *self, ir_node *bl, ir_node **mem, pmap *reg_map);
82 * Set the flags for a call.
83 * @param call The call.
84 * @param flags Some flags to be set.
85 * @param cb The call callbacks for that call.
86 * @note The ABI phase might change the flags due to analysis.
88 void be_abi_call_set_flags(be_abi_call_t *call, be_abi_call_flags_t flags, const be_abi_callbacks_t *cb);
91 void be_abi_call_param_stack(be_abi_call_t *call, int pos);
92 void be_abi_call_param_reg(be_abi_call_t *call, int pos, const arch_register_t *reg);
93 void be_abi_call_res_reg(be_abi_call_t *call, int pos, const arch_register_t *reg);
96 * Get the flags of a ABI call object.
97 * Note that the flags must not be the same as set by be_abi_call_set_flags(). Alayses may have
98 * altered several flags, so getting them from the call object is always a good idea.
99 * @param call The call object.
102 be_abi_call_flags_t be_abi_call_get_flags(const be_abi_call_t *call);
105 * Get the method type of an ABI call object.
106 * @param call The call object.
107 * @return The method type for that call object.
109 ir_type *be_abi_call_get_method_type(const be_abi_call_t *call);
111 be_abi_irg_t *be_abi_introduce(be_irg_t *bi);
112 void be_abi_fix_stack_bias(be_abi_irg_t *env);
113 void be_abi_fix_stack_nodes(be_abi_irg_t *env);
114 void be_abi_free(be_abi_irg_t *abi);
116 ir_node *be_abi_get_callee_save_irn(be_abi_irg_t *abi, const arch_register_t *reg);