register slots are now automatically allocated together with the $ARCH_attribute
[libfirm] / ir / be / mips / bearch_mips.c
index 1f829b4..6371ec8 100644 (file)
@@ -13,7 +13,7 @@
 #include "irgmod.h"
 #include "irgopt.h"
 #include "irgwalk.h"
-#include "iredges.h "
+#include "iredges.h"
 #include "irdump.h"
 #include "irextbb.h"
 
@@ -132,7 +132,7 @@ static const arch_register_req_t *mips_get_irn_reg_req(const void *self, arch_re
                                assert(0 && "floating point not supported (yet)");
                        }
                        else if (mode_is_int(mode) || mode_is_reference(mode)) {
-                               memcpy(req, &(mips_default_req_mips_general_purpose.req), sizeof(*req));
+                               memcpy(req, &(mips_default_req_mips_gp.req), sizeof(*req));
                        }
                        else if (mode == mode_T || mode == mode_M) {
                                DBG((mod, LEVEL_1, "ignoring Phi node %+F\n", irn));
@@ -477,12 +477,12 @@ static void mips_after_ra(void* self) {
 static void mips_emit_and_done(void *self) {
        mips_code_gen_t *cg = self;
        ir_graph           *irg = cg->irg;
-       FILE               *out = cg->out;
+       FILE               *out = cg->isa->out;
 
        mips_register_emitters();
 
        if (cg->emit_decls) {
-               mips_gen_decls(cg->out);
+               mips_gen_decls(out);
                cg->emit_decls = 0;
        }
 
@@ -501,11 +501,11 @@ static void mips_emit_and_done(void *self) {
        free(cg);
 }
 
-static void *mips_cg_init(FILE *F, const be_irg_t *birg);
+static void *mips_cg_init(const be_irg_t *birg);
 
 static const arch_code_generator_if_t mips_code_gen_if = {
        mips_cg_init,
-       NULL,                            /* before abi introduce */
+       NULL,                /* before abi introduce */
        mips_prepare_graph,
        mips_before_sched,   /* before scheduling hook */
        mips_before_ra,      /* before register allocation hook */
@@ -516,15 +516,15 @@ static const arch_code_generator_if_t mips_code_gen_if = {
 /**
  * Initializes the code generator.
  */
-static void *mips_cg_init(FILE *F, const be_irg_t *birg) {
+static void *mips_cg_init(const be_irg_t *birg) {
        mips_isa_t      *isa = (mips_isa_t *)birg->main_env->arch_env->isa;
        mips_code_gen_t *cg  = xmalloc(sizeof(*cg));
 
        cg->impl     = &mips_code_gen_if;
        cg->irg      = birg->irg;
        cg->reg_set  = new_set(mips_cmp_irn_reg_assoc, 1024);
-       cg->out      = F;
        cg->arch_env = birg->main_env->arch_env;
+       cg->isa      = isa;
        cg->birg     = birg;
        cg->bl_list  = NULL;
        FIRM_DBG_REGISTER(cg->mod, "firm.be.mips.cg");
@@ -556,16 +556,17 @@ static void *mips_cg_init(FILE *F, const be_irg_t *birg) {
 
 static mips_isa_t mips_isa_template = {
        &mips_isa_if,
-       &mips_general_purpose_regs[REG_SP],
-       &mips_general_purpose_regs[REG_FP],
+       &mips_gp_regs[REG_SP],
+       &mips_gp_regs[REG_FP],
        -1,             // stack direction
-       0               // num codegens?!? TODO what is this?
+       0,              // num codegens?!? TODO what is this?
+       NULL
 };
 
 /**
  * Initializes the backend ISA and opens the output file.
  */
-static void *mips_init(void) {
+static void *mips_init(FILE *file_handle) {
        static int inited = 0;
        mips_isa_t *isa;
 
@@ -575,6 +576,8 @@ static void *mips_init(void) {
        isa = xcalloc(1, sizeof(*isa));
        memcpy(isa, &mips_isa_template, sizeof(*isa));
 
+       isa->out = file_handle;
+
        mips_register_init(isa);
        mips_create_opcodes();
        mips_init_opcode_transforms();
@@ -610,7 +613,7 @@ static const arch_register_class_t *mips_get_reg_class(const void *self, int i)
  */
 const arch_register_class_t *mips_get_reg_class_for_mode(const void *self, const ir_mode *mode) {
        ASSERT_NO_FLOAT(mode);
-       return &mips_reg_classes[CLASS_mips_general_purpose];
+       return &mips_reg_classes[CLASS_mips_gp];
 }
 
 typedef struct {
@@ -648,8 +651,8 @@ static const arch_register_t *mips_abi_prologue(void *self, ir_node** mem, pmap
        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_general_purpose_regs[REG_SP]);
-       ir_node *fp = be_abi_reg_map_get(reg_map, &mips_general_purpose_regs[REG_FP]);
+       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;
 
        if(env->debug) {
@@ -667,13 +670,13 @@ static const arch_register_t *mips_abi_prologue(void *self, ir_node** mem, pmap
                sp = new_rd_mips_addi(dbg, irg, block, sp, mode_Is);
                attr = get_mips_attr(sp);
                attr->tv = new_tarval_from_long(-initialstackframesize, mode_Is);
-               mips_set_irn_reg(NULL, sp, &mips_general_purpose_regs[REG_SP]);
-               //arch_set_irn_register(mips_get_arg_env(), sp, &mips_general_purpose_regs[REG_SP]);
+               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]);
 
                /* TODO: where to get an edge with a0-a3
                int i;
                for(i = 0; i < 4; ++i) {
-                       ir_node *reg = be_abi_reg_map_get(reg_map, &mips_general_purpose_regs[REG_A0 + i]);
+                       ir_node *reg = be_abi_reg_map_get(reg_map, &mips_gp_regs[REG_A0 + i]);
                        ir_node *store = new_rd_mips_store_r(dbg, irg, block, *mem, sp, reg, mode_T);
                        attr = get_mips_attr(store);
                        attr->load_store_mode = mode_Iu;
@@ -683,7 +686,7 @@ static const arch_register_t *mips_abi_prologue(void *self, ir_node** mem, pmap
                }
                */
 
-               reg = be_abi_reg_map_get(reg_map, &mips_general_purpose_regs[REG_FP]);
+               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;
@@ -691,7 +694,7 @@ static const arch_register_t *mips_abi_prologue(void *self, ir_node** mem, pmap
 
                mm[4] = new_r_Proj(irg, block, store, mode_M, pn_Store_M);
 
-               reg = be_abi_reg_map_get(reg_map, &mips_general_purpose_regs[REG_RA]);
+               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;
@@ -710,10 +713,10 @@ static const arch_register_t *mips_abi_prologue(void *self, ir_node** mem, pmap
                sp = new_rd_mips_addi(dbg, irg, block, sp, mode_Is);
                attr = get_mips_attr(sp);
                attr->tv = new_tarval_from_long(-initialstackframesize, mode_Is);
-               mips_set_irn_reg(NULL, sp, &mips_general_purpose_regs[REG_SP]);
-               //arch_set_irn_register(mips_get_arg_env(), sp, &mips_general_purpose_regs[REG_SP]);
+               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]);
 
-               reg = be_abi_reg_map_get(reg_map, &mips_general_purpose_regs[REG_FP]);
+               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;
@@ -726,13 +729,13 @@ static const arch_register_t *mips_abi_prologue(void *self, ir_node** mem, pmap
        fp = new_rd_mips_addi(dbg, irg, block, sp, mode_Is);
        attr = get_mips_attr(fp);
        attr->tv = new_tarval_from_long(initialstackframesize, mode_Is);
-       mips_set_irn_reg(NULL, fp, &mips_general_purpose_regs[REG_FP]);
-       //arch_set_irn_register(mips_get_arg_env(), fp, &mips_general_purpose_regs[REG_FP]);
+       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]);
 
-       be_abi_reg_map_set(reg_map, &mips_general_purpose_regs[REG_FP], fp);
-       be_abi_reg_map_set(reg_map, &mips_general_purpose_regs[REG_SP], sp);
+       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);
 
-       return &mips_general_purpose_regs[REG_SP];
+       return &mips_gp_regs[REG_SP];
 }
 
 static void mips_abi_epilogue(void *self, ir_node *block, ir_node **mem, pmap *reg_map)
@@ -741,19 +744,19 @@ static void mips_abi_epilogue(void *self, ir_node *block, ir_node **mem, pmap *r
        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_general_purpose_regs[REG_SP]);
-       ir_node *fp = be_abi_reg_map_get(reg_map, &mips_general_purpose_regs[REG_FP]);
+       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 initial_frame_size = env->debug ? 24 : 4;
        int fp_save_offset = env->debug ? 16 : 0;
 
        // restore sp
-       //sp = be_new_IncSP(&mips_general_purpose_regs[REG_SP], irg, block, sp, *mem, BE_STACK_FRAME_SIZE, be_stack_dir_against);
+       //sp = be_new_IncSP(&mips_gp_regs[REG_SP], irg, block, sp, *mem, BE_STACK_FRAME_SIZE, be_stack_dir_against);
 
        // copy fp to sp
        sp = new_rd_mips_move(dbg, irg, block, fp, mode_Iu);
-       mips_set_irn_reg(NULL, sp, &mips_general_purpose_regs[REG_SP]);
-       //arch_set_irn_register(mips_get_arg_env(), fp, &mips_general_purpose_regs[REG_SP]);
+       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]);
 
        // 1. restore fp
        load = new_rd_mips_load_r(dbg, irg, block, *mem, sp, mode_T);
@@ -763,11 +766,11 @@ static void mips_abi_epilogue(void *self, ir_node *block, ir_node **mem, pmap *r
        attr->tv = new_tarval_from_long(fp_save_offset - initial_frame_size, mode_Is);
 
        fp = new_r_Proj(irg, block, load, mode_Iu, pn_Load_res);
-       mips_set_irn_reg(NULL, fp, &mips_general_purpose_regs[REG_FP]);
-       //arch_set_irn_register(mips_get_arg_env(), fp, &mips_general_purpose_regs[REG_FP]);
+       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]);
 
-       be_abi_reg_map_set(reg_map, &mips_general_purpose_regs[REG_FP], fp);
-       be_abi_reg_map_set(reg_map, &mips_general_purpose_regs[REG_SP], sp);
+       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);
 }
 
 /**
@@ -864,7 +867,7 @@ static void mips_get_call_abi(const void *self, ir_type *method_type, be_abi_cal
        for (i = 0; i < n; i++) {
                // first 4 params in $a0-$a3, the others on the stack
                if(i < 4) {
-                       reg = &mips_general_purpose_regs[REG_A0 + i];
+                       reg = &mips_gp_regs[REG_A0 + i];
                        be_abi_call_param_reg(abi, i, reg);
                } else {
                        /* default: all parameters on stack */
@@ -882,7 +885,7 @@ static void mips_get_call_abi(const void *self, ir_type *method_type, be_abi_cal
                mode = get_type_mode(tp);
                ASSERT_NO_FLOAT(mode);
 
-               reg = &mips_general_purpose_regs[REG_V0 + i];
+               reg = &mips_gp_regs[REG_V0 + i];
                be_abi_call_res_reg(abi, i, reg);
        }
 }
@@ -906,6 +909,14 @@ static const arch_code_generator_if_t *mips_get_code_generator_if(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) {
+       ir_mode *mode = arch_register_class_mode(cls);
+       return get_mode_size_bytes(mode);
+}
+
 #ifdef WITH_LIBCORE
 static void mips_register_options(lc_opt_entry_t *ent)
 {
@@ -913,9 +924,6 @@ static void mips_register_options(lc_opt_entry_t *ent)
 #endif /* WITH_LIBCORE */
 
 const arch_isa_if_t mips_isa_if = {
-#ifdef WITH_LIBCORE
-       mips_register_options,
-#endif
        mips_init,
        mips_done,
        mips_get_n_reg_class,
@@ -925,4 +933,8 @@ const arch_isa_if_t mips_isa_if = {
        mips_get_irn_handler,
        mips_get_code_generator_if,
        mips_get_list_sched_selector,
+       mips_get_reg_class_alignment,
+#ifdef WITH_LIBCORE
+       mips_register_options
+#endif
 };