X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fmips%2Fmips_emitter.c;h=a10de95c938ad17edd3dc66eab262d2064e19fa0;hb=f37b4dbb329604edd67ff5877161cb5322e93020;hp=3e992a97a783fc06b58c3270ba019226bc3e3b18;hpb=fb729d6eefa68ee2aa9db0f444ab2bc7abfec46a;p=libfirm

diff --git a/ir/be/mips/mips_emitter.c b/ir/be/mips/mips_emitter.c
index 3e992a97a..a10de95c9 100644
--- a/ir/be/mips/mips_emitter.c
+++ b/ir/be/mips/mips_emitter.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1995-2007 University of Karlsruhe.  All right reserved.
+ * Copyright (C) 1995-2008 University of Karlsruhe.  All right reserved.
  *
  * This file is part of libFirm.
  *
@@ -58,11 +58,14 @@ DEBUG_ONLY(static firm_dbg_module_t *dbg = NULL;)
 
 #define SNPRINTF_BUF_LEN 128
 
+static const mips_isa_t      *isa;
+static const arch_env_t      *arch_env;
+static const mips_code_gen_t *cg;
+
 /**
  * Returns the register at in position pos.
  */
-static const arch_register_t *get_in_reg(const arch_env_t *arch_env,
-                                         const ir_node *node, int pos)
+static const arch_register_t *get_in_reg(const ir_node *node, int pos)
 {
 	ir_node                *op;
 	const arch_register_t  *reg = NULL;
@@ -82,8 +85,7 @@ static const arch_register_t *get_in_reg(const arch_env_t *arch_env,
 /**
  * Returns the register at out position pos.
  */
-static const arch_register_t *get_out_reg(const arch_env_t *arch_env,
-                                          const ir_node *node, int pos)
+static const arch_register_t *get_out_reg(const ir_node *node, int pos)
 {
 	ir_node                *proj;
 	const arch_register_t  *reg = NULL;
@@ -128,23 +130,21 @@ static const arch_register_t *get_out_reg(const arch_env_t *arch_env,
 /**
  * Emit the name of the source register at given input position.
  */
-void mips_emit_source_register(mips_emit_env_t *env, const ir_node *node,
-                               int pos)
+void mips_emit_source_register(const ir_node *node, int pos)
 {
-	const arch_register_t *reg = get_in_reg(env->arch_env, node, pos);
-	be_emit_char(env->emit, '$');
-	be_emit_string(env->emit, arch_register_get_name(reg));
+	const arch_register_t *reg = get_in_reg(node, pos);
+	be_emit_char('$');
+	be_emit_string(arch_register_get_name(reg));
 }
 
 /**
  * Emit the name of the destination register at given output position.
  */
-void mips_emit_dest_register(mips_emit_env_t *env, const ir_node *node,
-                             int pos)
+void mips_emit_dest_register(const ir_node *node, int pos)
 {
-	const arch_register_t *reg = get_out_reg(env->arch_env, node, pos);
-	be_emit_char(env->emit, '$');
-	be_emit_string(env->emit, arch_register_get_name(reg));
+	const arch_register_t *reg = get_out_reg(node, pos);
+	be_emit_char('$');
+	be_emit_string(arch_register_get_name(reg));
 }
 
 #if 0
@@ -231,47 +231,45 @@ static const char *node_const_to_str(ir_node *n)
 }
 #endif
 
-void mips_emit_load_store_address(mips_emit_env_t *env, const ir_node *node,
-                                  int pos)
+void mips_emit_load_store_address(const ir_node *node, int pos)
 {
 	const mips_load_store_attr_t *attr = get_mips_load_store_attr_const(node);
 
-	be_emit_irprintf(env->emit, "%d(", attr->offset);
-	mips_emit_source_register(env, node, pos);
-	be_emit_char(env->emit, ')');
+	be_emit_irprintf("%d(", attr->offset);
+	mips_emit_source_register(node, pos);
+	be_emit_char(')');
 }
 
-void mips_emit_immediate_suffix(mips_emit_env_t *env, const ir_node *node,
-                                int pos)
+void mips_emit_immediate_suffix(const ir_node *node, int pos)
 {
 	ir_node *op = get_irn_n(node, pos);
 	if(is_mips_Immediate(op))
-		be_emit_char(env->emit, 'i');
+		be_emit_char('i');
 }
 
-void mips_emit_immediate(mips_emit_env_t *env, const ir_node *node)
+void mips_emit_immediate(const ir_node *node)
 {
 	const mips_immediate_attr_t *attr = get_mips_immediate_attr_const(node);
 
 	switch(attr->imm_type) {
 	case MIPS_IMM_CONST:
-		be_emit_irprintf(env->emit, "%d", attr->val);
+		be_emit_irprintf("%d", attr->val);
 		break;
 	case MIPS_IMM_SYMCONST_LO:
-		be_emit_cstring(env->emit, "%lo($");
-		be_emit_ident(env->emit, get_entity_ld_ident(attr->entity));
+		be_emit_cstring("%lo($");
+		be_emit_ident(get_entity_ld_ident(attr->entity));
 		if(attr->val != 0) {
-			be_emit_irprintf(env->emit, "%+d", attr->val);
+			be_emit_irprintf("%+d", attr->val);
 		}
-		be_emit_char(env->emit, ')');
+		be_emit_char(')');
 		break;
 	case MIPS_IMM_SYMCONST_HI:
-		be_emit_cstring(env->emit, "%hi($");
-		be_emit_ident(env->emit, get_entity_ld_ident(attr->entity));
+		be_emit_cstring("%hi($");
+		be_emit_ident(get_entity_ld_ident(attr->entity));
 		if(attr->val != 0) {
-			be_emit_irprintf(env->emit, "%+d", attr->val);
+			be_emit_irprintf("%+d", attr->val);
 		}
-		be_emit_char(env->emit, ')');
+		be_emit_char(')');
 		break;
 	default:
 		panic("invalid immediate type found");
@@ -281,14 +279,13 @@ void mips_emit_immediate(mips_emit_env_t *env, const ir_node *node)
 /**
  * Emit the name of the destination register at given output position.
  */
-void mips_emit_source_register_or_immediate(mips_emit_env_t *env,
-                                            const ir_node *node, int pos)
+void mips_emit_source_register_or_immediate(const ir_node *node, int pos)
 {
 	const ir_node *op = get_irn_n(node, pos);
 	if(is_mips_Immediate(op)) {
-		mips_emit_immediate(env, op);
+		mips_emit_immediate(op);
 	} else {
-		mips_emit_source_register(env, node, pos);
+		mips_emit_source_register(node, pos);
 	}
 }
 
@@ -309,13 +306,13 @@ static char *get_unique_label(char *buf, size_t buflen, const char *prefix)
 /************************************************************************/
 
 static
-void mips_emit_IncSP(mips_emit_env_t *env, const ir_node *node)
+void mips_emit_IncSP(const ir_node *node)
 {
 	int   offset = be_get_IncSP_offset(node);
 
 	if(offset == 0) {
-		be_emit_cstring(env->emit, "\t/* omitted IncSP with 0 */");
-		be_emit_finish_line_gas(env->emit, node);
+		be_emit_cstring("\t/* omitted IncSP with 0 */");
+		be_emit_finish_line_gas(node);
 		return;
 	}
 
@@ -324,92 +321,92 @@ void mips_emit_IncSP(mips_emit_env_t *env, const ir_node *node)
 	}
 
 	if(offset > 0) {
-		be_emit_irprintf(env->emit, "\tsubu $sp, $sp, %d", offset);
+		be_emit_irprintf("\tsubu $sp, $sp, %d", offset);
 	} else {
-		be_emit_irprintf(env->emit, "\taddu $sp, $sp, %d", -offset);
+		be_emit_irprintf("\taddu $sp, $sp, %d", -offset);
 	}
-	be_emit_finish_line_gas(env->emit, node);
+	be_emit_finish_line_gas(node);
 }
 
-static void mips_emit_Copy(mips_emit_env_t *env, const ir_node *node)
+static void mips_emit_Copy(const ir_node *node)
 {
-	be_emit_cstring(env->emit, "\tmove ");
-	mips_emit_dest_register(env, node, 0);
-	be_emit_cstring(env->emit, ", ");
-	mips_emit_source_register(env, node, 0);
-	be_emit_finish_line_gas(env->emit, node);
+	be_emit_cstring("\tmove ");
+	mips_emit_dest_register(node, 0);
+	be_emit_cstring(", ");
+	mips_emit_source_register(node, 0);
+	be_emit_finish_line_gas(node);
 }
 
-static void mips_emit_Return(mips_emit_env_t *env, const ir_node* node)
+static void mips_emit_Return(const ir_node* node)
 {
-	be_emit_cstring(env->emit, "\tj $ra");
-	be_emit_finish_line_gas(env->emit, node);
+	be_emit_cstring("\tj $ra");
+	be_emit_finish_line_gas(node);
 }
 
 static __attribute__((unused))
-void mips_emit_nops(mips_emit_env_t *env, int n)
+void mips_emit_nops(int n)
 {
 	int i;
 
 	for(i = 0; i < n; ++i) {
-		be_emit_cstring(env->emit, "\tnop\n");
-		be_emit_write_line(env->emit);
+		be_emit_cstring("\tnop\n");
+		be_emit_write_line();
 	}
 }
 
-static void mips_emit_Perm(mips_emit_env_t *env, const ir_node *node)
+static void mips_emit_Perm(const ir_node *node)
 {
 	assert(get_irn_arity(node) == 2);
 
-	be_emit_cstring(env->emit, "\txor ");
-	mips_emit_source_register(env, node, 0);
-	be_emit_cstring(env->emit, ", ");
-	mips_emit_source_register(env, node, 0);
-	be_emit_cstring(env->emit, ", ");
-	mips_emit_source_register(env, node, 1);
-	be_emit_finish_line_gas(env->emit, node);
+	be_emit_cstring("\txor ");
+	mips_emit_source_register(node, 0);
+	be_emit_cstring(", ");
+	mips_emit_source_register(node, 0);
+	be_emit_cstring(", ");
+	mips_emit_source_register(node, 1);
+	be_emit_finish_line_gas(node);
 
-	/* mips_emit_nops(env, 3); */
+	/* mips_emit_nops(3); */
 
-	be_emit_cstring(env->emit, "\txor ");
-	mips_emit_source_register(env, node, 1);
-	be_emit_cstring(env->emit, ", ");
-	mips_emit_source_register(env, node, 1);
-	be_emit_cstring(env->emit, ", ");
-	mips_emit_source_register(env, node, 0);
-	be_emit_finish_line_gas(env->emit, node);
+	be_emit_cstring("\txor ");
+	mips_emit_source_register(node, 1);
+	be_emit_cstring(", ");
+	mips_emit_source_register(node, 1);
+	be_emit_cstring(", ");
+	mips_emit_source_register(node, 0);
+	be_emit_finish_line_gas(node);
 
-	/* mips_emit_nops(env, 3); */
+	/* mips_emit_nops(3); */
 
-	be_emit_cstring(env->emit, "\txor ");
-	mips_emit_source_register(env, node, 0);
-	be_emit_cstring(env->emit, ", ");
-	mips_emit_source_register(env, node, 0);
-	be_emit_cstring(env->emit, ", ");
-	mips_emit_source_register(env, node, 1);
-	be_emit_finish_line_gas(env->emit, node);
+	be_emit_cstring("\txor ");
+	mips_emit_source_register(node, 0);
+	be_emit_cstring(", ");
+	mips_emit_source_register(node, 0);
+	be_emit_cstring(", ");
+	mips_emit_source_register(node, 1);
+	be_emit_finish_line_gas(node);
 
-	/* mips_emit_nops(env, 3); */
+	/* mips_emit_nops(3); */
 }
 
 /************************************************************************/
 /* Calls                                                                */
 /************************************************************************/
 
-static void mips_emit_Call(mips_emit_env_t *env, const ir_node *node)
+static void mips_emit_Call(const ir_node *node)
 {
 	ir_entity *callee;
 
-	be_emit_cstring(env->emit, "\tjal ");
+	be_emit_cstring("\tjal ");
 
 	/* call of immediate value (label) */
 	callee = be_Call_get_entity(node);
 	if(callee != NULL) {
-		be_emit_ident(env->emit, get_entity_ld_ident(callee));
+		be_emit_ident(get_entity_ld_ident(callee));
 	} else {
-		mips_emit_source_register(env, node, be_pos_Call_ptr);
+		mips_emit_source_register(node, be_pos_Call_ptr);
 	}
-	be_emit_finish_line_gas(env->emit, node);
+	be_emit_finish_line_gas(node);
 }
 
 /************************************************************************
@@ -432,27 +429,26 @@ const char* mips_get_block_label(const ir_node* block)
 /**
  * Emits a block label from the given block.
  */
-static
-void mips_emit_block_label(mips_emit_env_t *env, const ir_node *block)
+static void mips_emit_block_label(const ir_node *block)
 {
 	if (has_Block_label(block)) {
-		be_emit_string(env->emit, be_gas_label_prefix());
-		be_emit_irprintf(env->emit, "%lu", get_Block_label(block));
+		be_emit_string(be_gas_block_label_prefix());
+		be_emit_irprintf("%lu", get_Block_label(block));
 	} else {
-		be_emit_cstring(env->emit, BLOCK_PREFIX);
-		be_emit_irprintf(env->emit, "%d", get_irn_node_nr(block));
+		be_emit_cstring(BLOCK_PREFIX);
+		be_emit_irprintf("%ld", get_irn_node_nr(block));
 
 	}
 }
 
-static void mips_emit_Jump(mips_emit_env_t *env, const ir_node *node)
+static void mips_emit_Jump(const ir_node *node)
 {
 	const ir_node *block = get_irn_link(node);
 	assert(is_Block(block));
 
-	be_emit_cstring(env->emit, "\tb ");
-	mips_emit_block_label(env, block);
-	be_emit_finish_line_gas(env->emit, node);
+	be_emit_cstring("\tb ");
+	mips_emit_block_label(block);
+	be_emit_finish_line_gas(node);
 }
 
 ir_node *mips_get_jump_block(const ir_node* node, long projn)
@@ -472,32 +468,30 @@ ir_node *mips_get_jump_block(const ir_node* node, long projn)
 	return NULL;
 }
 
-void mips_emit_jump_target_proj(mips_emit_env_t *env, const ir_node *node,
-                                long projn)
+void mips_emit_jump_target_proj(const ir_node *node, long projn)
 {
 	ir_node *jumpblock = mips_get_jump_block(node, projn);
 	assert(jumpblock != NULL);
 
-	mips_emit_block_label(env, jumpblock);
+	mips_emit_block_label(jumpblock);
 }
 
-void mips_emit_jump_target(mips_emit_env_t *env, const ir_node *node)
+void mips_emit_jump_target(const ir_node *node)
 {
 	ir_node *jumpblock = get_irn_link(node);
 	assert(jumpblock != NULL);
 
-	mips_emit_block_label(env, jumpblock);
+	mips_emit_block_label(jumpblock);
 }
 
-void mips_emit_jump_or_fallthrough(mips_emit_env_t *env, const ir_node *node,
-                                   long pn)
+void mips_emit_jump_or_fallthrough(const ir_node *node, long pn)
 {
 	ir_node *jumpblock = mips_get_jump_block(node, pn);
 	assert(jumpblock != NULL);
 
 	/* TODO: use fallthrough when possible */
-	be_emit_cstring(env->emit, "b ");
-	mips_emit_block_label(env, jumpblock);
+	be_emit_cstring("b ");
+	mips_emit_block_label(jumpblock);
 }
 
 /************************************************************************
@@ -553,7 +547,8 @@ const char* mips_get_jumptbl_label(const ir_node* switchjmp)
  * Emits code for a SwitchJmp (creates a jump table if
  * possible otherwise a cmp-jmp cascade). Stolen from ia32
  */
-void emit_mips_jump_table(mips_emit_env_t *env, const ir_node *irn) {
+void emit_mips_jump_table(const ir_node *irn)
+{
 	int                lastval, i, i2, pn;
 	jmp_tbl_t          tbl;
 	ir_node           *proj;
@@ -590,25 +585,25 @@ void emit_mips_jump_table(mips_emit_env_t *env, const ir_node *irn) {
 	/* sort the branches by their number */
 	qsort(tbl.branches, tbl.num_branches, sizeof(tbl.branches[0]), mips_cmp_branch_t);
 
-	be_emit_string(env->emit, mips_get_jumptbl_label(irn));
-	be_emit_cstring(env->emit, ":\n");
-	be_emit_write_line(env->emit);
+	be_emit_string(mips_get_jumptbl_label(irn));
+	be_emit_cstring(":\n");
+	be_emit_write_line();
 	lastval = tbl.min_value;
 	for(i = 0; i < tbl.num_branches; ++i) {
 		const branch_t *branch = &tbl.branches[i];
 		int value = branch->value;
 
 		for(i2 = lastval + 1; i2 < value; ++i2) {
-			be_emit_cstring(env->emit, "\t.word ");
-			be_emit_ident(env->emit, get_entity_ld_ident(attr->symconst));
-			be_emit_char(env->emit, '\n');
-			be_emit_write_line(env->emit);
+			be_emit_cstring("\t.word ");
+			be_emit_ident(get_entity_ld_ident(attr->symconst));
+			be_emit_char('\n');
+			be_emit_write_line();
 		}
 
-		be_emit_cstring(env->emit, "\t.word ");
-		mips_emit_block_label(env, branch->target);
-		be_emit_char(env->emit, '\n');
-		be_emit_write_line(env->emit);
+		be_emit_cstring("\t.word ");
+		mips_emit_block_label(branch->target);
+		be_emit_char('\n');
+		be_emit_write_line();
 
 		lastval = branch->value;
 	}
@@ -619,20 +614,19 @@ void emit_mips_jump_table(mips_emit_env_t *env, const ir_node *irn) {
 		free(tbl.branches);
 }
 
-static
-void dump_jump_tables(ir_node* node, void *data)
+static void dump_jump_tables(ir_node* node, void *data)
 {
-	mips_emit_env_t *env = data;
+	(void) data;
 
 	// emit jump tables
 	if(is_mips_SwitchJump(node)) {
-		be_emit_cstring(env->emit, ".data\n");
-		be_emit_write_line(env->emit);
+		be_emit_cstring(".data\n");
+		be_emit_write_line();
 
-		emit_mips_jump_table(env, node);
+		emit_mips_jump_table(node);
 
-		be_emit_cstring(env->emit, ".text\n");
-		be_emit_write_line(env->emit);
+		be_emit_cstring(".text\n");
+		be_emit_write_line();
 	}
 }
 #endif
@@ -647,34 +641,34 @@ void dump_jump_tables(ir_node* node, void *data)
  *
  ***********************************************************************************/
 
-static void mips_emit_nothing(mips_emit_env_t *env, const ir_node *node)
+static void mips_emit_nothing(const ir_node *node)
 {
-	(void) env;
 	(void) node;
 }
 
-static void mips_emit_this_shouldnt_happen(mips_emit_env_t *env, const ir_node *node)
+static void mips_emit_this_shouldnt_happen(const ir_node *node)
 {
-	(void) env;
 	panic("Found non-lowered node %+F while emitting", node);
 }
 
 /**
  * The type of a emitter function.
  */
-typedef void (*emit_func) (mips_emit_env_t *, const ir_node *);
+typedef void (*emit_func) (const ir_node *);
 
 /**
  * Set a node emitter. Make it a bit more type safe.
  */
-static void register_emitter(ir_op *op, emit_func func) {
+static void register_emitter(ir_op *op, emit_func func)
+{
 	op->ops.generic = (op_func) func;
 }
 
 /**
  * Register emitter functions for mips backend
  */
-void mips_register_emitters(void) {
+void mips_register_emitters(void)
+{
 	/* first clear the generic function pointer for all ops */
 	clear_irp_opcodes_generic_func();
 
@@ -683,7 +677,6 @@ void mips_register_emitters(void) {
 
 	/* benode emitter */
 	register_emitter(op_be_IncSP, mips_emit_IncSP);
-	register_emitter(op_be_SetSP, mips_emit_this_shouldnt_happen);
 	register_emitter(op_be_AddSP, mips_emit_this_shouldnt_happen);
 	register_emitter(op_be_Call, mips_emit_Call);
 	register_emitter(op_be_Copy, mips_emit_Copy);
@@ -708,13 +701,13 @@ void mips_register_emitters(void) {
 /**
  * Emits assembly for a single node
  */
-static void mips_emit_node(mips_emit_env_t *env, const ir_node *node)
+static void mips_emit_node(const ir_node *node)
 {
 	ir_op *op = get_irn_op(node);
 
 	if (op->ops.generic) {
 		emit_func emit = (emit_func) op->ops.generic;
-		(*emit) (env, node);
+		(*emit) (node);
 	} else {
 		panic("No emitter defined for node %+F", node);
 	}
@@ -724,72 +717,71 @@ static void mips_emit_node(mips_emit_env_t *env, const ir_node *node)
  * Walks over the nodes in a block connected by scheduling edges
  * and emits code for each node.
  */
-void mips_gen_block(mips_emit_env_t *env, ir_node *block)
+void mips_gen_block(const ir_node *block)
 {
 	ir_node *node;
 
 	if (! is_Block(block))
 		return;
 
-	mips_emit_block_label(env, block);
-	be_emit_cstring(env->emit, ":\n");
-	be_emit_write_line(env->emit);
+	mips_emit_block_label(block);
+	be_emit_cstring(":\n");
+	be_emit_write_line();
 
 	sched_foreach(block, node) {
-		mips_emit_node(env, node);
+		mips_emit_node(node);
 	}
 
-	be_emit_char(env->emit, '\n');
-	be_emit_write_line(env->emit);
+	be_emit_char('\n');
+	be_emit_write_line();
 }
 
 /**
  * Emits code for function start.
  */
-void mips_emit_func_prolog(mips_emit_env_t *env, ir_graph *irg)
+void mips_emit_func_prolog(ir_graph *irg)
 {
 	ident *irg_ident = get_entity_ld_ident(get_irg_entity(irg));
-	be_emit_env_t *eenv = env->emit;
 
 	// dump jump tables
 	//irg_walk_graph(irg, NULL, dump_jump_tables, env);
 
-	be_emit_write_line(eenv);
-	be_gas_emit_switch_section(eenv, GAS_SECTION_TEXT);
+	be_emit_write_line();
+	be_gas_emit_switch_section(GAS_SECTION_TEXT);
 
-	be_emit_cstring(eenv, "\t.balign\t4\n");
+	be_emit_cstring("\t.balign\t4\n");
 
-	be_emit_cstring(eenv, "\t.global\t");
-	be_emit_ident(eenv, irg_ident);
-	be_emit_char(eenv, '\n');
+	be_emit_cstring("\t.global\t");
+	be_emit_ident(irg_ident);
+	be_emit_char('\n');
 
-	be_emit_cstring(eenv, "\t.set\tnomips16\n");
+	be_emit_cstring("\t.set\tnomips16\n");
 
-	be_emit_cstring(eenv, "\t.ent\t");
-	be_emit_ident(eenv, irg_ident);
-	be_emit_char(eenv, '\n');
+	be_emit_cstring("\t.ent\t");
+	be_emit_ident(irg_ident);
+	be_emit_char('\n');
 
-	be_emit_ident(eenv, irg_ident);
-	be_emit_cstring(eenv, ":\n");
+	be_emit_ident(irg_ident);
+	be_emit_cstring(":\n");
 
-	be_emit_cstring(eenv, "\t.frame\t$fp, 24, $ra\n");
-	be_emit_cstring(eenv, "\t.mask\t0xc0000000, -4\n");
-	be_emit_cstring(eenv, "\t.fmask\t0x00000000, 0\n");
+	be_emit_cstring("\t.frame\t$fp, 24, $ra\n");
+	be_emit_cstring("\t.mask\t0xc0000000, -4\n");
+	be_emit_cstring("\t.fmask\t0x00000000, 0\n");
 
-	be_emit_write_line(eenv);
+	be_emit_write_line();
 }
 
 /**
  * Emits code for function end
  */
-void mips_emit_func_epilog(mips_emit_env_t *env, ir_graph *irg)
+void mips_emit_func_epilog(ir_graph *irg)
 {
 	ident *irg_ident = get_entity_ident(get_irg_entity(irg));
 
-	be_emit_cstring(env->emit, "\t.end\t");
-	be_emit_ident(env->emit, irg_ident);
-	be_emit_char(env->emit, '\n');
-	be_emit_write_line(env->emit);
+	be_emit_cstring("\t.end\t");
+	be_emit_ident(irg_ident);
+	be_emit_char('\n');
+	be_emit_write_line();
 }
 
 /**
@@ -810,30 +802,28 @@ void mips_gen_labels(ir_node *block, void *env)
 /**
  * Main driver
  */
-void mips_gen_routine(mips_code_gen_t *cg, ir_graph *irg)
+void mips_gen_routine(mips_code_gen_t *mips_cg, ir_graph *irg)
 {
-	mips_emit_env_t  env;
 	int i, n;
 
-	env.isa      = (mips_isa_t*) cg->arch_env->isa;
-	env.emit     = &env.isa->emit;
-	env.arch_env = cg->arch_env;
-	env.cg       = cg;
+	cg       = mips_cg;
+	isa      = (const mips_isa_t*) cg->arch_env;
+	arch_env = cg->arch_env;
 
 	mips_register_emitters();
 
-	irg_block_walk_graph(irg, mips_gen_labels, NULL, &env);
+	irg_block_walk_graph(irg, mips_gen_labels, NULL, NULL);
 
-	mips_emit_func_prolog(&env, irg);
+	mips_emit_func_prolog(irg);
 
 	dump_ir_block_graph_sched(irg, "-kaputtelist");
 
 	for (i = 0, n = mips_get_sched_n_blocks(cg); i < n; ++i) {
 		ir_node *block = mips_get_sched_block(cg, i);
-		mips_gen_block(&env, block);
+		mips_gen_block(block);
 	}
 
-	mips_emit_func_epilog(&env, irg);
+	mips_emit_func_epilog(irg);
 }
 
 void mips_init_emitter(void)