/*
- * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved.
+ * Copyright (C) 1995-2011 University of Karlsruhe. All right reserved.
*
* This file is part of libFirm.
*
/**
* @file
* @brief emit assembler for a backend graph
- * @version $Id: amd64_emitter.c 26746 2009-11-27 08:53:15Z matze $
*/
#include "config.h"
#include "irargs_t.h"
#include "irprog.h"
-#include "../besched.h"
-#include "../begnuas.h"
-#include "../beblocksched.h"
-#include "../be_dbgout.h"
+#include "besched.h"
+#include "begnuas.h"
+#include "beblocksched.h"
#include "amd64_emitter.h"
#include "gen_amd64_emitter.h"
+#include "gen_amd64_regalloc_if.h"
#include "amd64_nodes_attr.h"
#include "amd64_new_nodes.h"
-#define SNPRINTF_BUF_LEN 128
-
-#include "../benode.h"
-
-/**
- * Returns the register at in position pos.
- */
-static const arch_register_t *get_in_reg(const ir_node *node, int pos)
-{
- ir_node *op;
- const arch_register_t *reg = NULL;
-
- assert(get_irn_arity(node) > pos && "Invalid IN position");
-
- /* The out register of the operator at position pos is the
- in register we need. */
- op = get_irn_n(node, pos);
-
- reg = arch_get_irn_register(op);
-
- assert(reg && "no in register found");
- return reg;
-}
-
-/**
- * Returns the register at out position pos.
- */
-static const arch_register_t *get_out_reg(const ir_node *node, int pos)
-{
- ir_node *proj;
- const arch_register_t *reg = NULL;
-
- /* 1st case: irn is not of mode_T, so it has only */
- /* one OUT register -> good */
- /* 2nd case: irn is of mode_T -> collect all Projs and ask the */
- /* Proj with the corresponding projnum for the register */
-
- if (get_irn_mode(node) != mode_T) {
- reg = arch_get_irn_register(node);
- } else if (is_amd64_irn(node)) {
- reg = arch_irn_get_register(node, pos);
- } else {
- const ir_edge_t *edge;
-
- foreach_out_edge(node, edge) {
- proj = get_edge_src_irn(edge);
- assert(is_Proj(proj) && "non-Proj from mode_T node");
- if (get_Proj_proj(proj) == pos) {
- reg = arch_get_irn_register(proj);
- break;
- }
- }
- }
-
- assert(reg && "no out register found");
- return reg;
-}
+#include "benode.h"
/*************************************************************
* _ _ __ _ _
* |_| |_|
*************************************************************/
+void amd64_emit_register(const arch_register_t *reg)
+{
+ be_emit_char('%');
+ be_emit_string(arch_register_get_name(reg));
+}
+
void amd64_emit_immediate(const ir_node *node)
{
- const amd64_immediate_attr_t *attr = get_amd64_immediate_attr_const (node);
+ const amd64_attr_t *attr = get_amd64_attr_const (node);
be_emit_char('$');
- be_emit_irprintf("0x%X", attr->imm_value);
+ be_emit_irprintf("0x%X", attr->ext.imm_value);
+}
+
+void amd64_emit_fp_offset(const ir_node *node)
+{
+ const amd64_SymConst_attr_t *attr = get_amd64_SymConst_attr_const(node);
+ if (attr->fp_offset)
+ be_emit_irprintf("%d", attr->fp_offset);
}
void amd64_emit_source_register(const ir_node *node, int pos)
{
- const arch_register_t *reg = get_in_reg(node, pos);
- be_emit_char('%');
- be_emit_string(arch_register_get_name(reg));
+ amd64_emit_register(arch_get_irn_register_in(node, pos));
}
void amd64_emit_dest_register(const ir_node *node, int pos)
{
- const arch_register_t *reg = get_out_reg(node, pos);
- be_emit_char('%');
- be_emit_string(arch_register_get_name(reg));
+ amd64_emit_register(arch_get_irn_register_out(node, pos));
}
/**
static void emit_amd64_SymConst(const ir_node *irn)
{
const amd64_SymConst_attr_t *attr = get_amd64_SymConst_attr_const(irn);
-// sym_or_tv_t key, *entry;
-// unsigned label;
-//
-// key.u.id = get_entity_ld_ident(attr->entity);
-// key.is_ident = 1;
-// key.label = 0;
-// entry = (sym_or_tv_t *)set_insert(sym_or_tv, &key, sizeof(key), HASH_PTR(key.u.generic));
-// if (entry->label == 0) {
-// /* allocate a label */
-// entry->label = get_unique_label();
-// }
-// label = entry->label;
-
+#if 0
+ sym_or_tv_t key, *entry;
+ unsigned label;
+
+ key.u.id = get_entity_ld_ident(attr->entity);
+ key.is_ident = 1;
+ key.label = 0;
+ entry = (sym_or_tv_t *)set_insert(sym_or_tv, &key, sizeof(key), hash_ptr(key.u.generic));
+ if (entry->label == 0) {
+ /* allocate a label */
+ entry->label = get_unique_label();
+ }
+ label = entry->label;
+#endif
+ be_emit_cstring("\tmov $");
be_gas_emit_entity(attr->entity);
- be_emit_char(':');
+ be_emit_cstring(", ");
+ amd64_emit_dest_register(irn, 0);
+ be_emit_finish_line_gas(irn);
+}
+
+/**
+ * Emit a Conv.
+ */
+static void emit_amd64_Conv(const ir_node *irn)
+{
+ be_emit_cstring("\tmov ");
+ amd64_emit_source_register(irn, 0);
+ be_emit_cstring(", ");
+ amd64_emit_dest_register(irn, 0);
+ be_emit_finish_line_gas(irn);
+}
+
+
+/**
+ * Returns the next block in a block schedule.
+ */
+static ir_node *sched_next_block(const ir_node *block)
+{
+ return (ir_node*)get_irn_link(block);
+}
+
+/**
+ * Returns the target block for a control flow node.
+ */
+static ir_node *get_cfop_target_block(const ir_node *irn)
+{
+ return (ir_node*)get_irn_link(irn);
+}
+
+/**
+ * Emit the target label for a control flow node.
+ */
+static void amd64_emit_cfop_target(const ir_node *irn)
+{
+ ir_node *block = get_cfop_target_block(irn);
+
+ be_gas_emit_block_name(block);
+}
+
+/**
+ * Emit a Jmp.
+ */
+static void emit_amd64_Jmp(const ir_node *node)
+{
+ ir_node *block, *next_block;
+
+ /* for now, the code works for scheduled and non-schedules blocks */
+ block = get_nodes_block(node);
+
+ /* we have a block schedule */
+ next_block = sched_next_block(block);
+ if (get_cfop_target_block(node) != next_block) {
+ be_emit_cstring("\tjmp ");
+ amd64_emit_cfop_target(node);
+ } else {
+ if (be_options.verbose_asm) {
+ be_emit_cstring("\t/* fallthrough to ");
+ amd64_emit_cfop_target(node);
+ be_emit_cstring(" */");
+ }
+ }
+ be_emit_finish_line_gas(node);
+}
+
+/**
+ * Emit a Compare with conditional branch.
+ */
+static void emit_amd64_Jcc(const ir_node *irn)
+{
+ const ir_edge_t *edge;
+ const ir_node *proj_true = NULL;
+ const ir_node *proj_false = NULL;
+ const ir_node *block;
+ const ir_node *next_block;
+ const char *suffix;
+ const amd64_attr_t *attr = get_amd64_attr_const(irn);
+ ir_relation relation = attr->ext.relation;
+ ir_node *op1 = get_irn_n(irn, 0);
+ const amd64_attr_t *cmp_attr = get_amd64_attr_const(op1);
+ bool is_signed = !cmp_attr->data.cmp_unsigned;
+
+ assert(is_amd64_Cmp(op1));
+
+ foreach_out_edge(irn, edge) {
+ ir_node *proj = get_edge_src_irn(edge);
+ long nr = get_Proj_proj(proj);
+ if (nr == pn_Cond_true) {
+ proj_true = proj;
+ } else {
+ proj_false = proj;
+ }
+ }
+
+ if (cmp_attr->data.ins_permuted) {
+ relation = get_inversed_relation(relation);
+ }
+
+ /* for now, the code works for scheduled and non-schedules blocks */
+ block = get_nodes_block(irn);
+
+ /* we have a block schedule */
+ next_block = sched_next_block(block);
+
+ assert(relation != ir_relation_false);
+ assert(relation != ir_relation_true);
+
+ if (get_cfop_target_block(proj_true) == next_block) {
+ /* exchange both proj's so the second one can be omitted */
+ const ir_node *t = proj_true;
+
+ proj_true = proj_false;
+ proj_false = t;
+ relation = get_negated_relation(relation);
+ }
+
+ switch (relation & ir_relation_less_equal_greater) {
+ case ir_relation_equal: suffix = "e"; break;
+ case ir_relation_less: suffix = is_signed ? "l" : "b"; break;
+ case ir_relation_less_equal: suffix = is_signed ? "le" : "be"; break;
+ case ir_relation_greater: suffix = is_signed ? "g" : "a"; break;
+ case ir_relation_greater_equal: suffix = is_signed ? "ge" : "ae"; break;
+ case ir_relation_less_greater: suffix = "ne"; break;
+ case ir_relation_less_equal_greater: suffix = "mp"; break;
+ default: panic("Cmp has unsupported pnc");
+ }
+
+ /* emit the true proj */
+ be_emit_irprintf("\tj%s ", suffix);
+ amd64_emit_cfop_target(proj_true);
+ be_emit_finish_line_gas(proj_true);
+
+ if (get_cfop_target_block(proj_false) == next_block) {
+ if (be_options.verbose_asm) {
+ be_emit_cstring("\t/* fallthrough to ");
+ amd64_emit_cfop_target(proj_false);
+ be_emit_cstring(" */");
+ be_emit_finish_line_gas(proj_false);
+ }
+ } else {
+ be_emit_cstring("\tjmp ");
+ amd64_emit_cfop_target(proj_false);
+ be_emit_finish_line_gas(proj_false);
+ }
+}
+
+/**
+ * Emits code for a call.
+ */
+static void emit_be_Call(const ir_node *node)
+{
+ ir_entity *entity = be_Call_get_entity(node);
+
+ /* %eax/%rax is used in AMD64 to pass the number of vector parameters for
+ * variable argument counts */
+ if (get_method_variadicity (be_Call_get_type((ir_node *) node))) {
+ /* But this still is a hack... */
+ be_emit_cstring("\txor %rax, %rax");
+ be_emit_finish_line_gas(node);
+ }
+
+ if (entity) {
+ be_emit_cstring("\tcall ");
+ be_gas_emit_entity (be_Call_get_entity(node));
+ be_emit_finish_line_gas(node);
+ } else {
+ be_emit_pad_comment();
+ be_emit_cstring("/* FIXME: call NULL entity?! */\n");
+ }
+}
+
+/**
+ * emit copy node
+ */
+static void emit_be_Copy(const ir_node *irn)
+{
+ ir_mode *mode = get_irn_mode(irn);
+
+ if (arch_get_irn_register_in(irn, 0) == arch_get_irn_register_out(irn, 0)) {
+ /* omitted Copy */
+ return;
+ }
+
+ if (mode_is_float(mode)) {
+ panic("emit_be_Copy: move not supported for FP");
+ } else if (mode_is_data(mode)) {
+ be_emit_cstring("\tmov ");
+ amd64_emit_source_register(irn, 0);
+ be_emit_cstring(", ");
+ amd64_emit_dest_register(irn, 0);
+ be_emit_finish_line_gas(irn);
+ } else {
+ panic("emit_be_Copy: move not supported for this mode");
+ }
+}
+
+static void emit_be_Perm(const ir_node *node)
+{
+ const arch_register_t *in0, *in1;
+ const arch_register_class_t *cls0, *cls1;
+
+ in0 = arch_get_irn_register(get_irn_n(node, 0));
+ in1 = arch_get_irn_register(get_irn_n(node, 1));
+
+ cls0 = arch_register_get_class(in0);
+ cls1 = arch_register_get_class(in1);
+
+ assert(cls0 == cls1 && "Register class mismatch at Perm");
+
+ be_emit_cstring("\txchg ");
+ amd64_emit_register (in0);
+ be_emit_cstring(", ");
+ amd64_emit_register (in1);
+ be_emit_finish_line_gas(node);
+
+ if (cls0 != &amd64_reg_classes[CLASS_amd64_gp]) {
+ panic("unexpected register class in be_Perm (%+F)", node);
+ }
+}
+
+static void emit_amd64_FrameAddr(const ir_node *irn)
+{
+ const amd64_SymConst_attr_t *attr =
+ (const amd64_SymConst_attr_t*) get_amd64_attr_const(irn);
+
+ be_emit_cstring("\tmov ");
+ amd64_emit_source_register(irn, 0);
+ be_emit_cstring(", ");
+ amd64_emit_dest_register(irn, 0);
be_emit_finish_line_gas(irn);
- be_emit_cstring("\t.long 0x0");
+
+ be_emit_cstring("\tadd ");
+ be_emit_irprintf("$0x%X", attr->fp_offset);
+ be_emit_cstring(", ");
+ amd64_emit_dest_register(irn, 0);
be_emit_finish_line_gas(irn);
}
+/**
+ * Emits code to increase stack pointer.
+ */
+static void emit_be_IncSP(const ir_node *node)
+{
+ int offs = be_get_IncSP_offset(node);
+
+ if (offs == 0)
+ return;
+
+ if (offs > 0) {
+ be_emit_irprintf("\tsub ");
+ be_emit_irprintf("$%u, ", offs);
+ amd64_emit_dest_register(node, 0);
+ be_emit_finish_line_gas(node);
+ } else {
+ be_emit_irprintf("\tadd ");
+ be_emit_irprintf("$%u, ", -offs);
+ amd64_emit_dest_register(node, 0);
+ be_emit_finish_line_gas(node);
+ }
+}
/**
* Emits code for a return.
be_emit_finish_line_gas(node);
}
+
+static void emit_amd64_binop_op(const ir_node *irn, int second_op)
+{
+ if (irn->op == op_amd64_Add) {
+ be_emit_cstring("\tadd ");
+ amd64_emit_source_register(irn, second_op);
+ be_emit_cstring(", ");
+ amd64_emit_dest_register(irn, 0);
+ be_emit_finish_line_gas(irn);
+ } else if (irn->op == op_amd64_Sub) {
+ be_emit_cstring("\tneg ");
+ amd64_emit_source_register(irn, second_op);
+ be_emit_finish_line_gas(irn);
+ be_emit_cstring("\tadd ");
+ amd64_emit_source_register(irn, second_op);
+ be_emit_cstring(", ");
+ amd64_emit_dest_register(irn, 0);
+ be_emit_finish_line_gas(irn);
+ be_emit_cstring("\tneg ");
+ amd64_emit_source_register(irn, second_op);
+ be_emit_finish_line_gas(irn);
+ }
+
+}
+
+/**
+ * Emits an arithmetic operation that handles arbitraty input registers.
+ */
+static void emit_amd64_binop(const ir_node *irn)
+{
+ const arch_register_t *reg_s1 = arch_get_irn_register_in(irn, 0);
+ const arch_register_t *reg_s2 = arch_get_irn_register_in(irn, 1);
+ const arch_register_t *reg_d1 = arch_get_irn_register_out(irn, 0);
+
+ int second_op = 0;
+
+ if (reg_d1 != reg_s1 && reg_d1 != reg_s2) {
+ be_emit_cstring("\tmov ");
+ amd64_emit_register(reg_s1);
+ be_emit_cstring(", ");
+ amd64_emit_register(reg_d1);
+ be_emit_finish_line_gas(irn);
+ second_op = 1;
+
+ } else if (reg_d1 == reg_s2 && reg_d1 != reg_s1) {
+ second_op = 0;
+
+ }
+
+ emit_amd64_binop_op(irn, second_op);
+}
+
/**
* The type of a emitter function.
*/
static void amd64_register_emitters(void)
{
/* first clear the generic function pointer for all ops */
- clear_irp_opcodes_generic_func();
+ ir_clear_opcodes_generic_func();
/* register all emitter functions defined in spec */
amd64_register_spec_emitters();
- set_emitter(op_be_Return, emit_be_Return);
- set_emitter(op_be_Start, emit_nothing);
- set_emitter(op_be_Barrier, emit_nothing);
- set_emitter(op_be_IncSP, emit_nothing);
+ set_emitter(op_amd64_SymConst, emit_amd64_SymConst);
+ set_emitter(op_amd64_Jmp, emit_amd64_Jmp);
+ set_emitter(op_amd64_Jcc, emit_amd64_Jcc);
+ set_emitter(op_amd64_Conv, emit_amd64_Conv);
+ set_emitter(op_amd64_FrameAddr, emit_amd64_FrameAddr);
+ set_emitter(op_be_Return, emit_be_Return);
+ set_emitter(op_be_Call, emit_be_Call);
+ set_emitter(op_be_Copy, emit_be_Copy);
+ set_emitter(op_be_IncSP, emit_be_IncSP);
+ set_emitter(op_be_Perm, emit_be_Perm);
+
+ set_emitter(op_amd64_Add, emit_amd64_binop);
+ set_emitter(op_amd64_Sub, emit_amd64_binop);
+
+ set_emitter(op_be_Start, emit_nothing);
+ set_emitter(op_be_Keep, emit_nothing);
+ set_emitter(op_Phi, emit_nothing);
}
typedef void (*emit_func_ptr) (const ir_node *);
if (! is_Block(block))
return;
- be_gas_emit_block_name(block);
- be_emit_char(':');
-
- be_emit_write_line();
+ be_gas_begin_block(block, true);
sched_foreach(block, node) {
amd64_emit_node(node);
/**
* Main driver
*/
-void amd64_gen_routine(const amd64_code_gen_t *cg, ir_graph *irg)
+void amd64_gen_routine(ir_graph *irg)
{
- (void)cg;
ir_entity *entity = get_irg_entity(irg);
ir_node **blk_sched;
- int i, n;
+ size_t i, n;
/* register all emitter functions */
amd64_register_emitters();
blk_sched = be_create_block_schedule(irg);
- be_dbg_method_begin(entity, be_abi_get_stack_layout(cg->birg->abi));
- be_gas_emit_function_prolog(entity, 4);
+ be_gas_emit_function_prolog(entity, 4, NULL);
irg_block_walk_graph(irg, amd64_gen_labels, NULL, NULL);
n = ARR_LEN(blk_sched);
- for (i = 0; i < n; ++i) {
+ for (i = 0; i < n; i++) {
ir_node *block = blk_sched[i];
- ir_node *prev = i > 0 ? blk_sched[i-1] : NULL;
+ ir_node *next = (i + 1) < n ? blk_sched[i+1] : NULL;
- set_irn_link(block, prev);
+ set_irn_link(block, next);
}
for (i = 0; i < n; ++i) {
}
be_gas_emit_function_epilog(entity);
- be_dbg_method_end();
- be_emit_char('\n');
- be_emit_write_line();
}
projects / libfirm / blobdiff