* PURPOSE.
*/
-/* The main mips backend driver file. */
-/* $Id$ */
+/**
+ * @file
+ * @brief The main mips backend driver file.
+ * @author Matthias Braun, Mehdi
+ * @version $Id$
+ */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "iredges.h"
#include "irdump.h"
#include "irextbb.h"
+#include "error.h"
#include "bitset.h"
#include "debug.h"
-#include "../bearch_t.h" /* the general register allocator interface */
+#include "../bearch_t.h"
#include "../benode_t.h"
#include "../belower.h"
#include "../besched_t.h"
-#include "../be.h"
+#include "be.h"
#include "../beabi.h"
#include "../bemachine.h"
#include "../bemodule.h"
+#include "../bespillslots.h"
+#include "../beemitter.h"
+#include "../begnuas.h"
#include "bearch_mips_t.h"
-#include "mips_new_nodes.h" /* mips nodes interface */
-#include "gen_mips_regalloc_if.h" /* the generated interface (register type and class defenitions) */
-#include "mips_gen_decls.h" /* interface declaration emitter */
+#include "mips_new_nodes.h"
+#include "gen_mips_regalloc_if.h"
#include "mips_transform.h"
#include "mips_emitter.h"
#include "mips_map_regs.h"
*/
static const
arch_register_req_t *mips_get_irn_reg_req(const void *self,
- const ir_node *node, int pos) {
+ const ir_node *node, int pos)
+{
long node_pos = pos == -1 ? 0 : pos;
ir_mode *mode = get_irn_mode(node);
+ (void) self;
if (is_Block(node) || mode == mode_X || mode == mode_M) {
return arch_no_register_req;
return arch_no_register_req;
}
-static void mips_set_irn_reg(const void *self, ir_node *irn, const arch_register_t *reg) {
+static void mips_set_irn_reg(const void *self, ir_node *irn,
+ const arch_register_t *reg)
+{
int pos = 0;
+ (void) self;
if (is_Proj(irn)) {
slots = get_mips_slots(irn);
slots[pos] = reg;
- }
- else {
+ } else {
/* here we set the registers for the Phi nodes */
mips_set_firm_reg(irn, reg, cur_reg_set);
}
}
-static const arch_register_t *mips_get_irn_reg(const void *self, const ir_node *irn) {
+static const arch_register_t *mips_get_irn_reg(const void *self,
+ const ir_node *irn)
+{
int pos = 0;
const arch_register_t *reg = NULL;
+ (void) self;
if (is_Proj(irn)) {
return reg;
}
-static arch_irn_class_t mips_classify(const void *self, const ir_node *irn) {
+static arch_irn_class_t mips_classify(const void *self, const ir_node *irn)
+{
+ (void) self;
irn = skip_Proj_const(irn);
if (is_cfop(irn)) {
return 0;
}
-static arch_irn_flags_t mips_get_flags(const void *self, const ir_node *irn) {
+static arch_irn_flags_t mips_get_flags(const void *self, const ir_node *irn)
+{
+ (void) self;
irn = skip_Proj_const(irn);
- if (is_mips_irn(irn)) {
- return get_mips_flags(irn);
- }
- else if (is_Unknown(irn)) {
- return arch_irn_flags_ignore;
- }
+ if (!is_mips_irn(irn))
+ return 0;
- return 0;
+ return get_mips_flags(irn);
}
-static ir_entity *mips_get_frame_entity(const void *self, const ir_node *irn) {
- if(is_mips_load_r(irn) || is_mips_store_r(irn)) {
- mips_attr_t *attr = get_mips_attr(irn);
+int mips_is_Load(const ir_node *node)
+{
+ return is_mips_lw(node) || is_mips_lh(node) || is_mips_lhu(node) ||
+ is_mips_lb(node) || is_mips_lbu(node);
+}
- return attr->stack_entity;
- }
+int mips_is_Store(const ir_node *node)
+{
+ return is_mips_sw(node) || is_mips_sh(node) || is_mips_sb(node);
+}
- return NULL;
+static ir_entity *mips_get_frame_entity(const void *self, const ir_node *node)
+{
+ const mips_load_store_attr_t *attr;
+ (void) self;
+
+ if(!is_mips_irn(node))
+ return NULL;
+ if(!mips_is_Load(node) && !mips_is_Store(node))
+ return NULL;
+
+ attr = get_mips_load_store_attr_const(node);
+ return attr->stack_entity;
}
-static void mips_set_frame_entity(const void *self, ir_node *irn, ir_entity *ent) {
- mips_attr_t *attr = get_mips_attr(irn);
- assert(is_mips_load_r(irn) || is_mips_store_r(irn));
- attr->stack_entity = ent;
+static void mips_set_frame_entity(const void *self, ir_node *node,
+ ir_entity *entity)
+{
+ mips_load_store_attr_t *attr;
+ (void) self;
+
+ if(!is_mips_irn(node)) {
+ panic("trying to set frame entity on non load/store node %+F\n", node);
+ }
+ if(!mips_is_Load(node) && !mips_is_Store(node)) {
+ panic("trying to set frame entity on non load/store node %+F\n", node);
+ }
+
+ attr = get_irn_generic_attr(node);
+ attr->stack_entity = entity;
}
/**
* This function is called by the generic backend to correct offsets for
* nodes accessing the stack.
*/
-static void mips_set_frame_offset(const void *self, ir_node *irn, int offset) {
- mips_attr_t *attr = get_mips_attr(irn);
- assert(is_mips_load_r(irn) || is_mips_store_r(irn));
+static void mips_set_frame_offset(const void *self, ir_node *node, int offset)
+{
+ mips_load_store_attr_t *attr;
+ (void) self;
+
+ if(!is_mips_irn(node)) {
+ panic("trying to set frame offset on non load/store node %+F\n", node);
+ }
+ if(!mips_is_Load(node) && !mips_is_Store(node)) {
+ panic("trying to set frame offset on non load/store node %+F\n", node);
+ }
- attr->stack_entity_offset = offset;
+ attr = get_irn_generic_attr(node);
+ attr->offset += offset;
+
+ if(attr->offset < -32768 || attr->offset > 32767) {
+ panic("Out of stack space! (mips supports only 16bit offsets)");
+ }
}
-static int mips_get_sp_bias(const void *self, const ir_node *irn) {
+static int mips_get_sp_bias(const void *self, const ir_node *irn)
+{
+ (void) self;
+ (void) irn;
return 0;
}
cg->bl_list = bl_list;
}
+#if 0
typedef struct _wenv_t {
ir_node *list;
} wenv_t;
wenv->list = node;
}
}
+#endif
static void replace_copyb_nodes(mips_code_gen_t *cg) {
+#if 0
wenv_t env;
ir_node *copy, *next;
ir_node *old_bl, *new_bl, *jmp, *new_jmp, *mem;
}
}
}
+#endif
+ (void) cg;
}
/**
}
// walk the graph and transform firm nodes into mips nodes where possible
- irg_walk_blkwise_graph(cg->irg, mips_pre_transform_node, mips_transform_node, cg);
-
+ mips_transform_graph(cg);
dump_ir_block_graph_sched(cg->irg, "-transformed");
}
/**
* These are some hooks which must be filled but are probably not needed.
*/
-static void mips_before_sched(void *self) {
- /* Some stuff you need to do after scheduling but before register allocation */
+static void mips_before_sched(void *self)
+{
+ (void) self;
}
-static void mips_before_ra(void *self) {
- /* Some stuff you need to do immediately after register allocation */
+static void mips_before_ra(void *self)
+{
+ (void) self;
}
-static void mips_after_ra(void* self) {
+static void mips_after_ra(void* self)
+{
mips_code_gen_t *cg = self;
+ be_coalesce_spillslots(cg->birg);
irg_walk_blkwise_graph(cg->irg, NULL, mips_after_ra_walker, self);
}
* Emits the code, closes the output file and frees
* the code generator interface.
*/
-static void mips_emit_and_done(void *self) {
- mips_code_gen_t *cg = self;
- ir_graph *irg = cg->irg;
- FILE *out = cg->isa->out;
-
- mips_register_emitters();
-
- if (cg->emit_decls) {
- mips_gen_decls(out);
- cg->emit_decls = 0;
- }
+static void mips_emit_and_done(void *self)
+{
+ mips_code_gen_t *cg = self;
+ ir_graph *irg = cg->irg;
+ (void) self;
- mips_gen_routine(out, irg, cg);
+ mips_gen_routine(cg, irg);
cur_reg_set = NULL;
/**
* Initializes the code generator.
*/
-static void *mips_cg_init(be_irg_t *birg) {
+static void *mips_cg_init(be_irg_t *birg)
+{
const arch_env_t *arch_env = be_get_birg_arch_env(birg);
- mips_isa_t *isa = (mips_isa_t *) arch_env->isa;
- mips_code_gen_t *cg = xmalloc(sizeof(*cg));
+ mips_isa_t *isa = (mips_isa_t *) arch_env->isa;
+ mips_code_gen_t *cg = xmalloc(sizeof(*cg));
cg->impl = &mips_code_gen_if;
cg->irg = be_get_birg_irg(birg);
cg->isa = isa;
cg->birg = birg;
cg->bl_list = NULL;
- FIRM_DBG_REGISTER(cg->mod, "firm.be.mips.cg");
-
- isa->num_codegens++;
-
- if (isa->num_codegens > 1)
- cg->emit_decls = 0;
- else
- cg->emit_decls = 1;
cur_reg_set = cg->reg_set;
mips_irn_ops.cg = cg;
+ isa->cg = cg;
+
return (arch_code_generator_t *)cg;
}
*****************************************************************/
static mips_isa_t mips_isa_template = {
- &mips_isa_if,
- &mips_gp_regs[REG_SP],
- &mips_gp_regs[REG_FP],
- -1, // stack direction
- 0, // num codegens?!? TODO what is this?
- NULL
+ {
+ &mips_isa_if,
+ &mips_gp_regs[REG_SP],
+ &mips_gp_regs[REG_FP],
+ -1, /* stack direction */
+ NULL, /* main environment */
+ 7, /* spill costs */
+ 5, /* reload costs */
+ },
+ NULL_EMITTER, /* emitter environment */
+ NULL, /* cg */
};
/**
if(inited)
return NULL;
+ inited = 1;
- isa = xcalloc(1, sizeof(*isa));
- memcpy(isa, &mips_isa_template, sizeof(*isa));
+ isa = xcalloc(1, sizeof(isa[0]));
+ memcpy(isa, &mips_isa_template, sizeof(isa[0]));
- isa->out = file_handle;
+ be_emit_init_env(&isa->emit, file_handle);
- mips_register_init(isa);
+ mips_register_init();
mips_create_opcodes();
- mips_init_opcode_transforms();
+ // mips_init_opcode_transforms();
- inited = 1;
+ /* we mark referenced global entities, so we can only emit those which
+ * are actually referenced. (Note: you mustn't use the type visited flag
+ * elsewhere in the backend)
+ */
+ inc_master_type_visited();
return isa;
}
/**
* Closes the output file and frees the ISA structure.
*/
-static void mips_done(void *self) {
- free(self);
+static void mips_done(void *self)
+{
+ mips_isa_t *isa = self;
+
+ be_gas_emit_decls(&isa->emit, isa->arch_isa.main_env, 1);
+
+ be_emit_destroy_env(&isa->emit);
+ free(isa);
}
-static int mips_get_n_reg_class(const void *self) {
+static int mips_get_n_reg_class(const void *self)
+{
+ (void) self;
return N_CLASSES;
}
-static const arch_register_class_t *mips_get_reg_class(const void *self, int i) {
+static const arch_register_class_t *mips_get_reg_class(const void *self, int i)
+{
+ (void) self;
assert(i >= 0 && i < N_CLASSES && "Invalid mips register class requested.");
return &mips_reg_classes[i];
}
* @param mode The mode in question.
* @return A register class which can hold values of the given mode.
*/
-const arch_register_class_t *mips_get_reg_class_for_mode(const void *self, const ir_mode *mode) {
+const arch_register_class_t *mips_get_reg_class_for_mode(const void *self,
+ const ir_mode *mode)
+{
+ (void) self;
ASSERT_NO_FLOAT(mode);
return &mips_reg_classes[CLASS_mips_gp];
}
typedef struct {
be_abi_call_flags_bits_t flags;
- const mips_isa_t *isa;
+ const arch_isa_t *isa;
const arch_env_t *arch_env;
ir_graph *irg;
// do special handling to support debuggers
{
mips_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 = (const mips_isa_t*) arch_env->isa;
- env->debug = 1;
+ env->flags = fl.bits;
+ env->irg = irg;
+ env->arch_env = arch_env;
+ env->isa = arch_env->isa;
+ env->debug = 1;
return env;
}
static void mips_abi_dont_save_regs(void *self, pset *s)
{
mips_abi_env_t *env = self;
+
if(env->flags.try_omit_fp)
- pset_insert_ptr(s, env->isa->fp);
+ pset_insert_ptr(s, env->isa->bp);
}
static const arch_register_t *mips_abi_prologue(void *self, ir_node** mem, pmap *reg_map)
{
mips_abi_env_t *env = self;
ir_graph *irg = env->irg;
- dbg_info *dbg = NULL; // TODO where can I get this from?
ir_node *block = get_irg_start_block(env->irg);
- mips_attr_t *attr;
ir_node *sp = be_abi_reg_map_get(reg_map, &mips_gp_regs[REG_SP]);
ir_node *fp = be_abi_reg_map_get(reg_map, &mips_gp_regs[REG_FP]);
int initialstackframesize;
initialstackframesize = 24;
// - setup first part of stackframe
- sp = new_rd_mips_addiu(dbg, irg, block, sp);
- attr = get_mips_attr(sp);
- attr->tv = new_tarval_from_long(-initialstackframesize, mode_Is);
+ sp = new_rd_mips_addu(NULL, irg, block, sp,
+ mips_create_Immediate(initialstackframesize));
mips_set_irn_reg(NULL, sp, &mips_gp_regs[REG_SP]);
- //arch_set_irn_register(mips_get_arg_env(), sp, &mips_gp_regs[REG_SP]);
+ set_mips_flags(sp, arch_irn_flags_ignore);
/* TODO: where to get an edge with a0-a3
int i;
*/
reg = be_abi_reg_map_get(reg_map, &mips_gp_regs[REG_FP]);
- store = new_rd_mips_store_r(dbg, irg, block, *mem, sp, reg, mode_T);
- attr = get_mips_attr(store);
- attr->modes.load_store_mode = mode_Iu;
- attr->tv = new_tarval_from_long(16, mode_Is);
+ store = new_rd_mips_sw(NULL, irg, block, sp, reg, *mem, NULL, 16);
- mm[4] = new_r_Proj(irg, block, store, mode_M, pn_Store_M);
+ mm[4] = store;
reg = be_abi_reg_map_get(reg_map, &mips_gp_regs[REG_RA]);
- store = new_rd_mips_store_r(dbg, irg, block, *mem, sp, reg, mode_T);
- attr = get_mips_attr(store);
- attr->modes.load_store_mode = mode_Iu;
- attr->tv = new_tarval_from_long(20, mode_Is);
+ store = new_rd_mips_sw(NULL, irg, block, sp, reg, *mem, NULL, 20);
- mm[5] = new_r_Proj(irg, block, store, mode_M, pn_Store_M);
+ mm[5] = store;
- // TODO ideally we would route these mem edges directly towards the epilogue
+ /* Note: ideally we would route these mem edges directly towards the
+ * epilogue, but this is currently not supported so we sync all mems
+ * together */
sync = new_r_Sync(irg, block, 2, mm+4);
*mem = sync;
} else {
initialstackframesize = 4;
// save old framepointer
- sp = new_rd_mips_addiu(dbg, irg, block, sp);
- attr = get_mips_attr(sp);
- attr->tv = new_tarval_from_long(-initialstackframesize, mode_Is);
+ sp = new_rd_mips_addu(NULL, irg, block, sp,
+ mips_create_Immediate(-initialstackframesize));
mips_set_irn_reg(NULL, sp, &mips_gp_regs[REG_SP]);
- //arch_set_irn_register(mips_get_arg_env(), sp, &mips_gp_regs[REG_SP]);
+ set_mips_flags(sp, arch_irn_flags_ignore);
reg = be_abi_reg_map_get(reg_map, &mips_gp_regs[REG_FP]);
- store = new_rd_mips_store_r(dbg, irg, block, *mem, sp, reg, mode_T);
- attr = get_mips_attr(store);
- attr->modes.load_store_mode = mode_Iu;
- attr->tv = new_tarval_from_long(0, mode_Is);
+ store = new_rd_mips_sw(NULL, irg, block, sp, reg, *mem, NULL, 0);
- *mem = new_r_Proj(irg, block, store, mode_M, pn_Store_M);
+ *mem = store;
}
// setup framepointer
- fp = new_rd_mips_addiu(dbg, irg, block, sp);
- attr = get_mips_attr(fp);
- attr->tv = new_tarval_from_long(initialstackframesize, mode_Is);
+ fp = new_rd_mips_addu(NULL, irg, block, sp,
+ mips_create_Immediate(-initialstackframesize));
mips_set_irn_reg(NULL, fp, &mips_gp_regs[REG_FP]);
- //arch_set_irn_register(mips_get_arg_env(), fp, &mips_gp_regs[REG_FP]);
+ set_mips_flags(fp, arch_irn_flags_ignore);
be_abi_reg_map_set(reg_map, &mips_gp_regs[REG_FP], fp);
be_abi_reg_map_set(reg_map, &mips_gp_regs[REG_SP], sp);
static void mips_abi_epilogue(void *self, ir_node *block, ir_node **mem, pmap *reg_map)
{
- mips_abi_env_t *env = self;
+ mips_abi_env_t *env = self;
+
ir_graph *irg = env->irg;
- dbg_info *dbg = NULL; // TODO where can I get this from?
- mips_attr_t *attr;
ir_node *sp = be_abi_reg_map_get(reg_map, &mips_gp_regs[REG_SP]);
ir_node *fp = be_abi_reg_map_get(reg_map, &mips_gp_regs[REG_FP]);
ir_node *load;
int fp_save_offset = env->debug ? 16 : 0;
// copy fp to sp
- sp = new_rd_mips_move(dbg, irg, block, fp);
+ sp = new_rd_mips_or(NULL, irg, block, fp, mips_create_zero());
mips_set_irn_reg(NULL, sp, &mips_gp_regs[REG_SP]);
- //arch_set_irn_register(mips_get_arg_env(), fp, &mips_gp_regs[REG_SP]);
+ set_mips_flags(sp, arch_irn_flags_ignore);
// 1. restore fp
- load = new_rd_mips_load_r(dbg, irg, block, *mem, sp, mode_T);
- attr = get_mips_attr(load);
- attr->modes.load_store_mode = mode_Iu;
- // sp is at the fp address already, so we have to do fp_save_offset - initial_frame_size
- attr->tv = new_tarval_from_long(fp_save_offset - initial_frame_size, mode_Is);
+ load = new_rd_mips_lw(NULL, irg, block, sp, *mem, NULL,
+ fp_save_offset - initial_frame_size);
+ set_mips_flags(load, arch_irn_flags_ignore);
- fp = new_r_Proj(irg, block, load, mode_Iu, pn_Load_res);
- mips_set_irn_reg(NULL, fp, &mips_gp_regs[REG_FP]);
- //arch_set_irn_register(mips_get_arg_env(), fp, &mips_gp_regs[REG_FP]);
+ fp = new_r_Proj(irg, block, load, mode_Iu, pn_mips_lw_res);
+ *mem = new_r_Proj(irg, block, load, mode_Iu, pn_mips_lw_M);
+ arch_set_irn_register(env->arch_env, fp, &mips_gp_regs[REG_FP]);
be_abi_reg_map_set(reg_map, &mips_gp_regs[REG_FP], fp);
be_abi_reg_map_set(reg_map, &mips_gp_regs[REG_SP], sp);
* @param method_type The type of the method (procedure) in question.
* @param abi The abi object to be modified
*/
-static void mips_get_call_abi(const void *self, ir_type *method_type, be_abi_call_t *abi) {
+static void mips_get_call_abi(const void *self, ir_type *method_type,
+ be_abi_call_t *abi)
+{
ir_type *tp;
ir_mode *mode;
int n = get_method_n_params(method_type);
ir_mode **modes;
const arch_register_t *reg;
be_abi_call_flags_t call_flags;
+ (void) self;
memset(&call_flags, 0, sizeof(call_flags));
call_flags.bits.left_to_right = 0;
}
}
-static const void *mips_get_irn_ops(const arch_irn_handler_t *self, const ir_node *irn) {
+static const void *mips_get_irn_ops(const arch_irn_handler_t *self,
+ const ir_node *irn)
+{
+ (void) self;
+ (void) irn;
return &mips_irn_ops;
}
mips_get_irn_ops
};
-const arch_irn_handler_t *mips_get_irn_handler(const void *self) {
+const arch_irn_handler_t *mips_get_irn_handler(const void *self)
+{
+ (void) self;
return &mips_irn_handler;
}
/**
* Initializes the code generator interface.
*/
-static const arch_code_generator_if_t *mips_get_code_generator_if(void *self) {
+static const arch_code_generator_if_t *mips_get_code_generator_if(void *self)
+{
+ (void) self;
return &mips_code_gen_if;
}
/**
* Returns the necessary byte alignment for storing a register of given class.
*/
-static int mips_get_reg_class_alignment(const void *self, const arch_register_class_t *cls) {
+static int mips_get_reg_class_alignment(const void *self,
+ const arch_register_class_t *cls)
+{
ir_mode *mode = arch_register_class_mode(cls);
+ (void) self;
return get_mode_size_bytes(mode);
}
-static const be_execution_unit_t ***mips_get_allowed_execution_units(const void *self, const ir_node *irn) {
+static const be_execution_unit_t ***mips_get_allowed_execution_units(
+ const void *self, const ir_node *irn)
+{
+ (void) self;
+ (void) irn;
/* TODO */
assert(0);
return NULL;
}
-static const be_machine_t *mips_get_machine(const void *self) {
+static const be_machine_t *mips_get_machine(const void *self)
+{
+ (void) self;
/* TODO */
assert(0);
return NULL;
/**
* Return irp irgs in the desired order.
*/
-static ir_graph **mips_get_irg_list(const void *self, ir_graph ***irg_list) {
+static ir_graph **mips_get_irg_list(const void *self, ir_graph ***irg_list)
+{
+ (void) self;
+ (void) irg_list;
return NULL;
}
32, /* Mulhs & Mulhu available for 32 bit */
};
static backend_params p = {
+ 1, /* need dword lowering */
+ 0, /* don't support inlien assembler yet */
NULL, /* no additional opcodes */
NULL, /* will be set later */
- 1, /* need dword lowering */
NULL, /* but yet no creator function */
NULL, /* context for create_intrinsic_fkt */
+ NULL, /* no if conversion settings */
};
p.dep_param = &ad;
projects / libfirm / blobdiff