/**
* @file
* @brief emit assembler for a backend graph
- * @version $Id$
*/
#include "config.h"
#include <limits.h>
+#include "error.h"
#include "xmalloc.h"
#include "tv.h"
#include "iredges.h"
#include "irargs_t.h"
#include "irprog.h"
-#include "../besched.h"
-#include "../begnuas.h"
-#include "../beblocksched.h"
-#include "../benode.h"
+#include "besched.h"
+#include "begnuas.h"
+#include "beblocksched.h"
+#include "benode.h"
#include "TEMPLATE_emitter.h"
#include "gen_TEMPLATE_emitter.h"
+#include "gen_TEMPLATE_regalloc_if.h"
#include "TEMPLATE_nodes_attr.h"
#include "TEMPLATE_new_nodes.h"
-#define SNPRINTF_BUF_LEN 128
-
-/**
- * Returns the register at in position pos.
- */
-static const arch_register_t *get_in_reg(const ir_node *node, int pos)
+static void TEMPLATE_emit_immediate(const ir_node *node)
{
- 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;
+ const TEMPLATE_attr_t *attr = get_TEMPLATE_attr_const(node);
+ be_emit_irprintf("%T", attr->value);
}
-/**
- * Returns the register at out position pos.
- */
-static const arch_register_t *get_out_reg(const ir_node *node, int pos)
+static void emit_register(const arch_register_t *reg)
{
- 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_TEMPLATE_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;
+ be_emit_string(reg->name);
}
-
-
-void TEMPLATE_emit_immediate(const ir_node *node)
+static void TEMPLATE_emit_source_register(const ir_node *node, int pos)
{
- const TEMPLATE_attr_t *attr = get_irn_generic_attr_const(node);
- be_emit_tarval(attr->value);
+ const arch_register_t *reg = arch_get_irn_register_in(node, pos);
+ emit_register(reg);
}
-void TEMPLATE_emit_source_register(const ir_node *node, int pos)
+static void TEMPLATE_emit_dest_register(const ir_node *node, int pos)
{
- const arch_register_t *reg = get_in_reg(node, pos);
- be_emit_string(arch_register_get_name(reg));
-}
-
-void TEMPLATE_emit_dest_register(const ir_node *node, int pos)
-{
- const arch_register_t *reg = get_out_reg(node, pos);
- be_emit_string(arch_register_get_name(reg));
+ const arch_register_t *reg = arch_get_irn_register_out(node, pos);
+ emit_register(reg);
}
/**
*/
static void TEMPLATE_emit_cfop_target(const ir_node *node)
{
- ir_node *block = get_irn_link(node);
+ ir_node *block = (ir_node*)get_irn_link(node);
be_gas_emit_block_name(block);
}
+void TEMPLATE_emitf(const ir_node *node, const char *format, ...)
+{
+ va_list ap;
+ va_start(ap, format);
+ be_emit_char('\t');
+ for (;;) {
+ const char *start = format;
+ while (*format != '%' && *format != '\0')
+ ++format;
+ be_emit_string_len(start, format-start);
+ if (*format == '\0')
+ break;
+ ++format;
+
+ switch (*format++) {
+ case '%':
+ be_emit_char('%');
+ break;
+
+ case 'S': {
+ if (*format < '0' || '9' <= *format)
+ goto unknown;
+ unsigned const pos = *format++ - '0';
+ TEMPLATE_emit_source_register(node, pos);
+ break;
+ }
+
+ case 'D': {
+ if (*format < '0' || '9' <= *format)
+ goto unknown;
+ unsigned const pos = *format++ - '0';
+ TEMPLATE_emit_dest_register(node, pos);
+ break;
+ }
+
+ case 'I':
+ TEMPLATE_emit_immediate(node);
+ break;
+
+ case 'X': {
+ int num = va_arg(ap, int);
+ be_emit_irprintf("%X", num);
+ break;
+ }
+
+ case 'u': {
+ unsigned num = va_arg(ap, unsigned);
+ be_emit_irprintf("%u", num);
+ break;
+ }
+
+ case 'd': {
+ int num = va_arg(ap, int);
+ be_emit_irprintf("%d", num);
+ break;
+ }
+
+ case 's': {
+ const char *string = va_arg(ap, const char *);
+ be_emit_string(string);
+ break;
+ }
+
+ case 'L': {
+ TEMPLATE_emit_cfop_target(node);
+ break;
+ }
+
+ case '\n':
+ be_emit_char('\n');
+ be_emit_write_line();
+ be_emit_char('\t');
+ break;
+
+ default:
+unknown:
+ panic("unknown format conversion");
+ }
+ }
+ va_end(ap);
+ be_emit_finish_line_gas(node);
+}
/**
* Emits code for a unconditional jump.
*/
static void emit_TEMPLATE_Jmp(const ir_node *node)
{
- be_emit_cstring("\tjmp ");
- TEMPLATE_emit_cfop_target(node);
- be_emit_finish_line_gas(node);
+ TEMPLATE_emitf(node, "jmp %L");
}
static void emit_be_IncSP(const ir_node *node)
return;
/* downwards growing stack */
- if (offset > 0) {
- be_emit_cstring("\tsub ");
- } else {
- be_emit_cstring("\tadd ");
+ const char *op = "add";
+ if (offset < 0) {
+ op = "sub";
offset = -offset;
}
- TEMPLATE_emit_source_register(node, 0);
- be_emit_irprintf(", %d, ", offset);
- TEMPLATE_emit_dest_register(node, 0);
- be_emit_finish_line_gas(node);
+ TEMPLATE_emitf(node, "%s %S0, %d, %D0", op, offset);
}
-static void emit_be_Return(const ir_node *node)
+static void emit_be_Start(const ir_node *node)
{
- be_emit_cstring("\tret");
- be_emit_finish_line_gas(node);
+ ir_graph *irg = get_irn_irg(node);
+ ir_type *frame_type = get_irg_frame_type(irg);
+ unsigned size = get_type_size_bytes(frame_type);
+
+ /* emit function prolog */
+
+ /* allocate stackframe */
+ if (size > 0) {
+ TEMPLATE_emitf(node, "sub %%sp, %u, %%sp", size);
+ }
}
-static void emit_nothing(const ir_node *node)
+static void emit_be_Return(const ir_node *node)
{
- (void) node;
-}
+ ir_graph *irg = get_irn_irg(node);
+ ir_type *frame_type = get_irg_frame_type(irg);
+ unsigned size = get_type_size_bytes(frame_type);
-/**
- * The type of a emitter function.
- */
-typedef void (emit_func)(const ir_node *node);
+ /* emit function epilog here */
-static inline void set_emitter(ir_op *op, emit_func func)
-{
- op->ops.generic = (op_func)func;
+ /* deallocate stackframe */
+ if (size > 0) {
+ TEMPLATE_emitf(node, "add %%sp, %u, %%sp", size);
+ }
+
+ /* return */
+ TEMPLATE_emitf(node, "ret");
}
/**
static void TEMPLATE_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 */
TEMPLATE_register_spec_emitters();
/* custom emitters not provided by the spec */
- set_emitter(op_TEMPLATE_Jmp, emit_TEMPLATE_Jmp);
- set_emitter(op_be_Return, emit_be_Return);
- set_emitter(op_be_IncSP, emit_be_IncSP);
+ be_set_emitter(op_TEMPLATE_Jmp, emit_TEMPLATE_Jmp);
+ be_set_emitter(op_be_IncSP, emit_be_IncSP);
+ be_set_emitter(op_be_Return, emit_be_Return);
+ be_set_emitter(op_be_Start, emit_be_Start);
/* no need to emit anything for the following nodes */
- set_emitter(op_Phi, emit_nothing);
- set_emitter(op_be_Keep, emit_nothing);
- set_emitter(op_be_Start, emit_nothing);
- set_emitter(op_be_Barrier, emit_nothing);
-}
-
-typedef void (*emit_func_ptr) (const ir_node *);
-
-/**
- * Emits code for a node.
- */
-static void TEMPLATE_emit_node(const ir_node *node)
-{
- ir_op *op = get_irn_op(node);
-
- if (op->ops.generic) {
- emit_func_ptr func = (emit_func_ptr) op->ops.generic;
- (*func) (node);
- } else {
- ir_fprintf(stderr, "No emitter for node %+F\n", node);
- }
+ be_set_emitter(op_Phi, be_emit_nothing);
+ be_set_emitter(op_be_Keep, be_emit_nothing);
}
/**
*/
static void TEMPLATE_emit_block(ir_node *block)
{
- ir_node *node;
-
- be_gas_emit_block_name(block);
- be_emit_cstring(":\n");
- be_emit_write_line();
+ be_gas_begin_block(block, true);
sched_foreach(block, node) {
- TEMPLATE_emit_node(node);
+ be_emit_node(node);
}
}
{
ir_node **block_schedule;
ir_entity *entity = get_irg_entity(irg);
- int i;
- int n;
+ size_t i;
+ size_t n;
/* register all emitter functions */
TEMPLATE_register_emitters();
block_schedule = be_create_block_schedule(irg);
/* emit assembler prolog */
- be_gas_emit_function_prolog(entity, 4);
+ be_gas_emit_function_prolog(entity, 4, NULL);
/* populate jump link fields with their destinations */
irg_block_walk_graph(irg, TEMPLATE_gen_labels, NULL, NULL);
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