+/*
+ * Copyright (C) 1995-2007 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.
+ */
+
/* The main TEMPLATE backend driver file. */
/* $Id$ */
-
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "bitset.h"
#include "debug.h"
-#include "../bearch.h" /* the general register allocator interface */
+#include "../bearch_t.h" /* the general register allocator interface */
#include "../benode_t.h"
#include "../belower.h"
#include "../besched_t.h"
#include "../be.h"
#include "../beabi.h"
+#include "../bemodule.h"
+#include "../begnuas.h"
#include "bearch_TEMPLATE_t.h"
#include "TEMPLATE_new_nodes.h" /* TEMPLATE nodes interface */
#include "gen_TEMPLATE_regalloc_if.h" /* the generated interface (register type and class defenitions) */
-#include "TEMPLATE_gen_decls.h" /* interface declaration emitter */
#include "TEMPLATE_transform.h"
#include "TEMPLATE_emitter.h"
#include "TEMPLATE_map_regs.h"
-#define DEBUG_MODULE "firm.be.TEMPLATE.isa"
-
/* TODO: ugly, but we need it to get access to the registers assigned to Phi nodes */
static set *cur_reg_set = NULL;
* |___/
**************************************************/
-static ir_node *my_skip_proj(const ir_node *n) {
- while (is_Proj(n))
- n = get_Proj_pred(n);
- return (ir_node *)n;
-}
-
/**
* Return register requirements for a TEMPLATE node.
* If the node returns a tuple (mode_T) then the proj's
* will be asked for this information.
*/
-static const arch_register_req_t *TEMPLATE_get_irn_reg_req(const void *self, arch_register_req_t *req, const ir_node *irn, int pos) {
- const TEMPLATE_register_req_t *irn_req;
+static const
+arch_register_req_t *TEMPLATE_get_irn_reg_req(const void *self,
+ const ir_node *node, int pos) {
long node_pos = pos == -1 ? 0 : pos;
- ir_mode *mode = get_irn_mode(irn);
- firm_dbg_module_t *mod = firm_dbg_register(DEBUG_MODULE);
+ ir_mode *mode = get_irn_mode(node);
if (mode == mode_T || mode == mode_M) {
- DBG((mod, LEVEL_1, "ignoring mode_T, mode_M node %+F\n", irn));
- return NULL;
+ return arch_no_register_req;
}
- DBG((mod, LEVEL_1, "get requirements at pos %d for %+F ... ", pos, irn));
-
- if (is_Proj(irn)) {
+ if (is_Proj(node)) {
/* in case of a proj, we need to get the correct OUT slot */
/* of the node corresponding to the proj number */
if (pos == -1) {
- node_pos = TEMPLATE_translate_proj_pos(irn);
- }
- else {
+ node_pos = TEMPLATE_translate_proj_pos(node);
+ } else {
node_pos = pos;
}
- irn = my_skip_proj(irn);
-
- DB((mod, LEVEL_1, "skipping Proj, going to %+F at pos %d ... ", irn, node_pos));
+ node = skip_Proj_const(node);
}
/* get requirements for our own nodes */
- if (is_TEMPLATE_irn(irn)) {
+ if (is_TEMPLATE_irn(node)) {
+ const arch_register_req_t *req;
if (pos >= 0) {
- irn_req = get_TEMPLATE_in_req(irn, pos);
+ req = get_TEMPLATE_in_req(node, pos);
+ } else {
+ req = get_TEMPLATE_out_req(node, node_pos);
}
- else {
- irn_req = get_TEMPLATE_out_req(irn, node_pos);
- }
-
- DB((mod, LEVEL_1, "returning reqs for %+F at pos %d\n", irn, pos));
-
- memcpy(req, &(irn_req->req), sizeof(*req));
- if (arch_register_req_is(&(irn_req->req), should_be_same)) {
- assert(irn_req->same_pos >= 0 && "should be same constraint for in -> out NYI");
- req->other_same = get_irn_n(irn, irn_req->same_pos);
- }
+ assert(req != NULL);
- if (arch_register_req_is(&(irn_req->req), should_be_different)) {
- assert(irn_req->different_pos >= 0 && "should be different constraint for in -> out NYI");
- req->other_different = get_irn_n(irn, irn_req->different_pos);
- }
- }
- /* get requirements for FIRM nodes */
- else {
- /* treat Phi like Const with default requirements */
- if (is_Phi(irn)) {
- DB((mod, LEVEL_1, "returning standard reqs for %+F\n", irn));
-
- if (mode_is_float(mode)) {
- memcpy(req, &(TEMPLATE_default_req_TEMPLATE_floating_point.req), sizeof(*req));
- }
- else if (mode_is_int(mode) || mode_is_reference(mode)) {
- memcpy(req, &(TEMPLATE_default_req_TEMPLATE_general_purpose.req), sizeof(*req));
- }
- else if (mode == mode_T || mode == mode_M) {
- DBG((mod, LEVEL_1, "ignoring Phi node %+F\n", irn));
- return NULL;
- }
- else {
- assert(0 && "unsupported Phi-Mode");
- }
- }
- else {
- DB((mod, LEVEL_1, "returning NULL for %+F (node not supported)\n", irn));
- req = NULL;
- }
+ return req;
}
- return req;
+ /* unknowns should be transformed already */
+ assert(!is_Unknown(node));
+
+ return arch_no_register_req;
}
static void TEMPLATE_set_irn_reg(const void *self, ir_node *irn, const arch_register_t *reg) {
if (is_Proj(irn)) {
pos = TEMPLATE_translate_proj_pos(irn);
- irn = my_skip_proj(irn);
+ irn = skip_Proj(irn);
}
if (is_TEMPLATE_irn(irn)) {
if (is_Proj(irn)) {
pos = TEMPLATE_translate_proj_pos(irn);
- irn = my_skip_proj(irn);
+ irn = skip_Proj_const(irn);
}
if (is_TEMPLATE_irn(irn)) {
}
static arch_irn_class_t TEMPLATE_classify(const void *self, const ir_node *irn) {
- irn = my_skip_proj(irn);
+ irn = skip_Proj_const(irn);
if (is_cfop(irn)) {
return arch_irn_class_branch;
}
static arch_irn_flags_t TEMPLATE_get_flags(const void *self, const ir_node *irn) {
- irn = my_skip_proj(irn);
+ irn = skip_Proj_const(irn);
if (is_TEMPLATE_irn(irn)) {
return get_TEMPLATE_flags(irn);
return 0;
}
-static entity *TEMPLATE_get_frame_entity(const void *self, const ir_node *irn) {
- /* TODO: return the entity assigned to the frame */
+static ir_entity *TEMPLATE_get_frame_entity(const void *self, const ir_node *node) {
+ /* TODO: return the ir_entity assigned to the frame */
return NULL;
}
+static void TEMPLATE_set_frame_entity(const void *self, ir_node *node, ir_entity *ent) {
+ /* TODO: set the ir_entity assigned to the frame */
+}
+
/**
* This function is called by the generic backend to correct offsets for
* nodes accessing the stack.
*/
-static void TEMPLATE_set_stack_bias(const void *self, ir_node *irn, int bias) {
+static void TEMPLATE_set_frame_offset(const void *self, ir_node *irn, int offset) {
/* TODO: correct offset if irn accesses the stack */
}
+static int TEMPLATE_get_sp_bias(const void *self, const ir_node *irn) {
+ return 0;
+}
+
/* fill register allocator interface */
static const arch_irn_ops_if_t TEMPLATE_irn_ops_if = {
TEMPLATE_classify,
TEMPLATE_get_flags,
TEMPLATE_get_frame_entity,
- TEMPLATE_set_stack_bias
+ TEMPLATE_set_frame_entity,
+ TEMPLATE_set_frame_offset,
+ TEMPLATE_get_sp_bias,
+ NULL, /* get_inverse */
+ NULL, /* get_op_estimated_cost */
+ NULL, /* possible_memory_operand */
+ NULL, /* perform_memory_operand */
};
TEMPLATE_irn_ops_t TEMPLATE_irn_ops = {
/**
* Called immediatly before emit phase.
*/
-static void TEMPLATE_finish_irg(ir_graph *irg, TEMPLATE_code_gen_t *cg) {
- /* TODO: - fix offsets for nodes accessing stack
- - ...
- */
+static void TEMPLATE_finish_irg(void *self) {
+ TEMPLATE_code_gen_t *cg = self;
+ ir_graph *irg = cg->irg;
+
+ dump_ir_block_graph_sched(irg, "-TEMPLATE-finished");
}
}
static void TEMPLATE_before_ra(void *self) {
- /* Some stuff you need to do immediatly after register allocation */
+ /* Some stuff you need to do after scheduling but before register allocation */
}
-
-/**
- * Creates a Store for a Spill
- */
-static ir_node *TEMPLATE_lower_spill(void *self, ir_node *spill) {
- TEMPLATE_code_gen_t *cg = self;
- dbg_info *dbg = get_irn_dbg_info(spill);
- ir_node *block = get_nodes_block(spill);
- ir_node *ptr = get_irg_frame(cg->irg);
- ir_node *val = be_get_Spill_context(spill);
- ir_node *mem = new_rd_NoMem(cg->irg);
- ir_mode *mode = get_irn_mode(spill);
- ir_node *res;
- entity *ent = be_get_spill_entity(spill);
- unsigned offs = get_entity_offset_bytes(ent);
-
- DB((cg->mod, LEVEL_1, "lower_spill: got offset %d for %+F\n", offs, ent));
-
- /* TODO: create Store */
-
- return res;
+static void TEMPLATE_after_ra(void *self) {
+ /* Some stuff you need to do immediatly after register allocation */
}
-/**
- * Create a Load for a Spill
- */
-static ir_node *TEMPLATE_lower_reload(void *self, ir_node *reload) {
- TEMPLATE_code_gen_t *cg = self;
- dbg_info *dbg = get_irn_dbg_info(reload);
- ir_node *block = get_nodes_block(reload);
- ir_node *ptr = get_irg_frame(cg->irg);
- ir_mode *mode = get_irn_mode(reload);
- ir_node *pred = get_irn_n(reload, 0);
- tarval *tv;
- ir_node *res;
-
- /* TODO: create Load */
- return res;
-}
/**
* Emits the code, closes the output file and frees
static void TEMPLATE_emit_and_done(void *self) {
TEMPLATE_code_gen_t *cg = self;
ir_graph *irg = cg->irg;
- FILE *out = cg->out;
- if (cg->emit_decls) {
- TEMPLATE_gen_decls(cg->out);
- cg->emit_decls = 0;
- }
-
- TEMPLATE_finish_irg(irg, cg);
- dump_ir_block_graph_sched(irg, "-TEMPLATE-finished");
- TEMPLATE_gen_routine(out, irg, cg);
+ TEMPLATE_gen_routine(cg, irg);
cur_reg_set = NULL;
free(self);
}
-static void *TEMPLATE_cg_init(FILE *F, const be_irg_t *birg);
+static void *TEMPLATE_cg_init(be_irg_t *birg);
static const arch_code_generator_if_t TEMPLATE_code_gen_if = {
TEMPLATE_cg_init,
+ NULL, /* before abi introduce hook */
TEMPLATE_prepare_graph,
+ NULL, /* spill hook */
TEMPLATE_before_sched, /* before scheduling hook */
TEMPLATE_before_ra, /* before register allocation hook */
- TEMPLATE_lower_spill,
- TEMPLATE_lower_reload,
+ TEMPLATE_after_ra, /* after register allocation hook */
+ TEMPLATE_finish_irg,
TEMPLATE_emit_and_done
};
/**
* Initializes the code generator.
*/
-static void *TEMPLATE_cg_init(FILE *F, const be_irg_t *birg) {
- TEMPLATE_isa_t *isa = (TEMPLATE_isa_t *)birg->main_env->arch_env->isa;
- TEMPLATE_code_gen_t *cg = xmalloc(sizeof(*cg));
+static void *TEMPLATE_cg_init(be_irg_t *birg) {
+ const arch_env_t *arch_env = be_get_birg_arch_env(birg);
+ TEMPLATE_isa_t *isa = (TEMPLATE_isa_t *) arch_env->isa;
+ TEMPLATE_code_gen_t *cg = xmalloc(sizeof(*cg));
cg->impl = &TEMPLATE_code_gen_if;
- cg->irg = birg->irg;
+ cg->irg = be_get_birg_irg(birg);
cg->reg_set = new_set(TEMPLATE_cmp_irn_reg_assoc, 1024);
- cg->mod = firm_dbg_register("firm.be.TEMPLATE.cg");
- cg->out = F;
- cg->arch_env = birg->main_env->arch_env;
+ cg->arch_env = arch_env;
+ cg->isa = isa;
cg->birg = birg;
-
- isa->num_codegens++;
-
- if (isa->num_codegens > 1)
- cg->emit_decls = 0;
- else
- cg->emit_decls = 1;
+ FIRM_DBG_REGISTER(cg->mod, "firm.be.TEMPLATE.cg");
cur_reg_set = cg->reg_set;
*****************************************************************/
static TEMPLATE_isa_t TEMPLATE_isa_template = {
- &TEMPLATE_isa_if,
- &TEMPLATE_general_purpose_regs[REG_R6],
- &TEMPLATE_general_purpose_regs[REG_R7],
- -1,
- 0
+ {
+ &TEMPLATE_isa_if, /* isa interface implementation */
+ &TEMPLATE_general_purpose_regs[REG_SP], /* stack pointer register */
+ &TEMPLATE_general_purpose_regs[REG_BP], /* base pointer register */
+ -1, /* stack direction */
+ NULL, /* main environment */
+ },
+ { NULL, }, /* emitter environment */
};
/**
* Initializes the backend ISA and opens the output file.
*/
-static void *TEMPLATE_init(void) {
- static int inited = 0;
+static void *TEMPLATE_init(FILE *outfile) {
+ static int run_once = 0;
TEMPLATE_isa_t *isa;
- if(inited)
+ if(run_once)
return NULL;
+ run_once = 1;
isa = xcalloc(1, sizeof(*isa));
memcpy(isa, &TEMPLATE_isa_template, sizeof(*isa));
+ be_emit_init_env(&isa->emit, outfile);
+
TEMPLATE_register_init(isa);
TEMPLATE_create_opcodes();
- inited = 1;
-
return isa;
}
* Closes the output file and frees the ISA structure.
*/
static void TEMPLATE_done(void *self) {
+ TEMPLATE_isa_t *isa = self;
+
+ /* emit now all global declarations */
+ be_gas_emit_decls(&isa->emit, isa->arch_isa.main_env, 0);
+
+ be_emit_destroy_env(&isa->emit);
free(self);
}
+typedef struct {
+ be_abi_call_flags_bits_t flags;
+ const arch_env_t *arch_env;
+ const arch_isa_t *isa;
+ ir_graph *irg;
+} TEMPLATE_abi_env_t;
+
+static void *TEMPLATE_abi_init(const be_abi_call_t *call, const arch_env_t *arch_env, ir_graph *irg)
+{
+ TEMPLATE_abi_env_t *env = xmalloc(sizeof(env[0]));
+ be_abi_call_flags_t fl = be_abi_call_get_flags(call);
+ env->flags = fl.bits;
+ env->irg = irg;
+ env->arch_env = arch_env;
+ env->isa = arch_env->isa;
+ return env;
+}
+
/**
- * Produces the type which sits between the stack args and the locals on the stack.
- * it will contain the return address and space to store the old base pointer.
- * @return The Firm type modelling the ABI between type.
+ * Get the between type for that call.
+ * @param self The callback object.
+ * @return The between type of for that call.
*/
-static ir_type *get_between_type(void) {
+static ir_type *TEMPLATE_get_between_type(void *self) {
+ //TEMPLATE_abi_env_t *env = self;
static ir_type *between_type = NULL;
- static entity *old_bp_ent = NULL;
+ static ir_entity *old_bp_ent = NULL;
if(!between_type) {
- entity *ret_addr_ent;
+ ir_entity *ret_addr_ent;
ir_type *ret_addr_type = new_type_primitive(new_id_from_str("return_addr"), mode_P);
ir_type *old_bp_type = new_type_primitive(new_id_from_str("bp"), mode_P);
old_bp_ent = new_entity(between_type, new_id_from_str("old_bp"), old_bp_type);
ret_addr_ent = new_entity(between_type, new_id_from_str("old_bp"), ret_addr_type);
- set_entity_offset_bytes(old_bp_ent, 0);
- set_entity_offset_bytes(ret_addr_ent, get_type_size_bytes(old_bp_type));
+ set_entity_offset(old_bp_ent, 0);
+ set_entity_offset(ret_addr_ent, get_type_size_bytes(old_bp_type));
set_type_size_bytes(between_type, get_type_size_bytes(old_bp_type) + get_type_size_bytes(ret_addr_type));
}
return between_type;
}
+static void TEMPLATE_abi_dont_save_regs(void *self, pset *s)
+{
+ TEMPLATE_abi_env_t *env = self;
+ if (env->flags.try_omit_fp) {
+ /* insert the BP register into the ignore set */
+ pset_insert_ptr(s, env->isa->bp);
+ }
+}
+
+/**
+ * Build the prolog, return the BASE POINTER register
+ */
+static const arch_register_t *TEMPLATE_abi_prologue(void *self, ir_node **mem, pmap *reg_map) {
+ TEMPLATE_abi_env_t *env = self;
+
+ if(env->flags.try_omit_fp)
+ return env->isa->sp;
+ return env->isa->bp;
+}
+
+/* Build the epilog */
+static void TEMPLATE_abi_epilogue(void *self, ir_node *bl, ir_node **mem, pmap *reg_map) {
+ //TEMPLATE_abi_env_t *env = self;
+}
+
+static const be_abi_callbacks_t TEMPLATE_abi_callbacks = {
+ TEMPLATE_abi_init,
+ free,
+ TEMPLATE_get_between_type,
+ TEMPLATE_abi_dont_save_regs,
+ TEMPLATE_abi_prologue,
+ TEMPLATE_abi_epilogue,
+};
+
/**
* Get the ABI restrictions for procedure calls.
* @param self The this pointer.
* @param abi The abi object to be modified
*/
void TEMPLATE_get_call_abi(const void *self, ir_type *method_type, be_abi_call_t *abi) {
- ir_type *between_type;
ir_type *tp;
ir_mode *mode;
int i, n = get_method_n_params(method_type);
- const arch_register_t *reg;
+ be_abi_call_flags_t call_flags;
- /* get the between type and the frame pointer save entity */
- between_type = get_between_type();
+ /* set abi flags for calls */
+ call_flags.bits.left_to_right = 0;
+ call_flags.bits.store_args_sequential = 1;
+ call_flags.bits.try_omit_fp = 1;
+ call_flags.bits.fp_free = 0;
+ call_flags.bits.call_has_imm = 1;
/* set stack parameter passing style */
- be_abi_call_set_flags(abi, BE_ABI_NONE, between_type);
+ be_abi_call_set_flags(abi, call_flags, &TEMPLATE_abi_callbacks);
for (i = 0; i < n; i++) {
/* TODO: implement register parameter: */
/* be_abi_call_param_reg(abi, i, reg); */
/* default: all parameters on stack */
- be_abi_call_param_stack(abi, i);
+ be_abi_call_param_stack(abi, i, 4, 0, 0);
}
/* TODO: set correct return register */
/**
* Returns the reg_pressure scheduler with to_appear_in_schedule() overloaded
*/
-static const list_sched_selector_t *TEMPLATE_get_list_sched_selector(const void *self) {
+static const list_sched_selector_t *TEMPLATE_get_list_sched_selector(const void *self, list_sched_selector_t *selector) {
memcpy(&TEMPLATE_sched_selector, trivial_selector, sizeof(list_sched_selector_t));
TEMPLATE_sched_selector.to_appear_in_schedule = TEMPLATE_to_appear_in_schedule;
return &TEMPLATE_sched_selector;
}
-#ifdef WITH_LIBCORE
-static void TEMPLATE_register_options(lc_opt_entry_t *ent)
-{
+static const ilp_sched_selector_t *TEMPLATE_get_ilp_sched_selector(const void *self) {
+ return NULL;
+}
+
+/**
+ * Returns the necessary byte alignment for storing a register of given class.
+ */
+static int TEMPLATE_get_reg_class_alignment(const void *self, const arch_register_class_t *cls) {
+ ir_mode *mode = arch_register_class_mode(cls);
+ return get_mode_size_bytes(mode);
+}
+
+/**
+ * Returns the libFirm configuration parameter for this backend.
+ */
+static const backend_params *TEMPLATE_get_libfirm_params(void) {
+ static arch_dep_params_t ad = {
+ 1, /* allow subs */
+ 0, /* Muls are fast enough on Firm */
+ 31, /* shift would be ok */
+ 0, /* no Mulhs */
+ 0, /* no Mulhu */
+ 0, /* no Mulh */
+ };
+ static backend_params p = {
+ NULL, /* no additional opcodes */
+ NULL, /* will be set later */
+ 0, /* no dword lowering */
+ NULL, /* no creator function */
+ NULL, /* context for create_intrinsic_fkt */
+ };
+
+ p.dep_param = &ad;
+ return &p;
}
-#endif /* WITH_LIBCORE */
+
+static const be_execution_unit_t ***TEMPLATE_get_allowed_execution_units(const void *self, const ir_node *irn) {
+ /* TODO */
+ assert(0);
+ return NULL;
+}
+
+static const be_machine_t *TEMPLATE_get_machine(const void *self) {
+ /* TODO */
+ assert(0);
+ return NULL;
+}
+
const arch_isa_if_t TEMPLATE_isa_if = {
-#ifdef WITH_LIBCORE
- TEMPLATE_register_options,
-#endif
TEMPLATE_init,
TEMPLATE_done,
TEMPLATE_get_n_reg_class,
TEMPLATE_get_irn_handler,
TEMPLATE_get_code_generator_if,
TEMPLATE_get_list_sched_selector,
+ TEMPLATE_get_ilp_sched_selector,
+ TEMPLATE_get_reg_class_alignment,
+ TEMPLATE_get_libfirm_params,
+ TEMPLATE_get_allowed_execution_units,
+ TEMPLATE_get_machine
};
+
+void be_init_arch_TEMPLATE(void)
+{
+ be_register_isa_if("TEMPLATE", &TEMPLATE_isa_if);
+}
+
+BE_REGISTER_MODULE_CONSTRUCTOR(be_init_arch_TEMPLATE);
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