#include "../besched_t.h"
#include "../benode_t.h"
+#include "../beabi.h"
+#include "../be_dbgout.h"
#include "ia32_emitter.h"
#include "gen_ia32_emitter.h"
static section_t curr_sec = NO_SECTION;
static const char *text[ASM_MAX][SECTION_MAX] = {
{
- ".section\t.text", ".section\t.data", ".section\t.rodata", ".section\t.text"
+ ".section\t.text",
+ ".section\t.data",
+ ".section\t.rodata",
+ ".section\t.text",
+ ".section\t.tbss,\"awT\",@nobits",
+ ".section\t.ctors,\"aw\",@progbits"
},
{
- ".section\t.text", ".section\t.data", ".section .rdata,\"dr\"", ".section\t.text"
+ ".section\t.text",
+ ".section\t.data",
+ ".section .rdata,\"dr\"",
+ ".section\t.text",
+ ".section\t.tbss,\"awT\",@nobits",
+ ".section\t.ctors,\"aw\",@progbits"
}
};
case SECTION_DATA:
case SECTION_RODATA:
case SECTION_COMMON:
+ case SECTION_TLS:
+ case SECTION_CTOR:
fprintf(F, "\t%s\n", text[asm_flavour][sec]);
break;
* Emits the jump sequence for a conditional jump (cmp + jmp_true + jmp_false)
*/
static void finish_CondJmp(FILE *F, const ir_node *irn, ir_mode *mode) {
- const ir_node *proj1, *proj2 = NULL;
- const ir_node *block, *next_bl = NULL;
+ const ir_node *proj_true;
+ const ir_node *proj_false;
+ const ir_node *block;
+ const ir_node *next_block;
char buf[SNPRINTF_BUF_LEN];
char cmd_buf[SNPRINTF_BUF_LEN];
char cmnt_buf[SNPRINTF_BUF_LEN];
int is_unsigned;
+ int pnc;
+ int flipped = 0;
/* get both Proj's */
- proj1 = get_proj(irn, pn_Cond_true);
- assert(proj1 && "CondJmp without true Proj");
+ proj_true = get_proj(irn, pn_Cond_true);
+ assert(proj_true && "CondJmp without true Proj");
- proj2 = get_proj(irn, pn_Cond_false);
- assert(proj2 && "CondJmp without false Proj");
+ proj_false = get_proj(irn, pn_Cond_false);
+ assert(proj_false && "CondJmp without false Proj");
+
+ pnc = get_ia32_pncode(irn);
/* for now, the code works for scheduled and non-schedules blocks */
block = get_nodes_block(irn);
/* we have a block schedule */
- next_bl = next_blk_sched(block);
+ next_block = next_blk_sched(block);
- if (get_cfop_target_block(proj1) == next_bl) {
+ if (get_cfop_target_block(proj_true) == next_block) {
/* exchange both proj's so the second one can be omitted */
- const ir_node *t = proj1;
- proj1 = proj2;
- proj2 = t;
+ const ir_node *t = proj_true;
+ proj_true = proj_false;
+ proj_false = t;
+
+ flipped = 1;
+ pnc = get_negated_pnc(pnc, mode);
}
/* the first Proj must always be created */
is_unsigned = mode_is_float(mode) || ! mode_is_signed(mode);
- if (get_Proj_proj(proj1) == pn_Cond_true) {
- snprintf(cmd_buf, SNPRINTF_BUF_LEN, "j%s %s",
- get_cmp_suffix(get_ia32_pncode(irn), is_unsigned),
- get_cfop_target(proj1, buf));
- snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "/* cmp(a, b) == TRUE */");
- }
- else {
- snprintf(cmd_buf, SNPRINTF_BUF_LEN, "j%s %s",
- get_cmp_suffix(get_negated_pnc(get_ia32_pncode(irn), mode), is_unsigned),
- get_cfop_target(proj1, buf));
- snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "/* cmp(a, b) == FALSE */");
- }
+ snprintf(cmd_buf, SNPRINTF_BUF_LEN, "j%s %s",
+ get_cmp_suffix(pnc, is_unsigned),
+ get_cfop_target(proj_true, buf));
+ snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "/* %s(a, b) %s*/",
+ get_pnc_string(pnc), flipped ? "(was flipped)" : "");
IA32_DO_EMIT(irn);
/* the second Proj might be a fallthrough */
- if (get_cfop_target_block(proj2) != next_bl) {
- snprintf(cmd_buf, SNPRINTF_BUF_LEN, "jmp %s", get_cfop_target(proj2, buf));
+ if (get_cfop_target_block(proj_false) != next_block) {
+ snprintf(cmd_buf, SNPRINTF_BUF_LEN, "jmp %s", get_cfop_target(proj_false, buf));
snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "/* otherwise */");
}
else {
cmd_buf[0] = '\0';
- snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "/* fallthrough %s */", get_cfop_target(proj2, buf));
+ snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "/* fallthrough %s */", get_cfop_target(proj_false, buf));
}
IA32_DO_EMIT(irn);
}
if (reverse)
set_ia32_pncode(irn, (long)get_inversed_pnc(get_ia32_pncode(irn)));
- snprintf(cmd_buf, SNPRINTF_BUF_LEN, "%s %%%s", instr, reg);
+ snprintf(cmd_buf, SNPRINTF_BUF_LEN, "%s %s%s", instr, reg[0] == '\0' ? "" : "%", reg);
lc_esnprintf(ia32_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* %+F */", irn);
IA32_DO_EMIT(irn);
lc_esnprintf(ia32_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "fnstsw %%ax", irn);
}
else if (is_PsiCondCMov) {
/* omit compare because flags are already set by And/Or */
- snprintf(cmd_buf, SNPRINTF_BUF_LEN, " ");
+ lc_esnprintf(arg_env, cmd_buf, SNPRINTF_BUF_LEN, "test %1S, %1S", irn, irn);
}
else {
assert(0 && "unsupported CMov");
set_irn_n(irn, idx_left, get_irn_n(irn, idx_right));
set_irn_n(irn, idx_right, t);
- cmp_suffix = get_cmp_suffix(get_inversed_pnc(get_ia32_pncode(irn)), is_unsigned);
+ cmp_suffix = get_cmp_suffix(get_negated_pnc(get_ia32_pncode(irn), get_irn_mode(irn)), is_unsigned);
}
else {
/* out is different from in: need copy default -> out */
- lc_esnprintf(arg_env, cmd_buf, SNPRINTF_BUF_LEN, "mov %1D, %4S", irn, irn);
+ if (is_PsiCondCMov)
+ lc_esnprintf(arg_env, cmd_buf, SNPRINTF_BUF_LEN, "mov %1D, %3S", irn, irn);
+ else
+ lc_esnprintf(arg_env, cmd_buf, SNPRINTF_BUF_LEN, "mov %1D, %4S", irn, irn);
+
lc_esnprintf(arg_env, cmnt_buf, SNPRINTF_BUF_LEN, "/* copy default -> out */" );
IA32_DO_EMIT(irn);
}
- lc_esnprintf(arg_env, cmd_buf, SNPRINTF_BUF_LEN, "cmov%s %1D, %3S", cmp_suffix, irn, irn);
+ if (is_PsiCondCMov)
+ lc_esnprintf(arg_env, cmd_buf, SNPRINTF_BUF_LEN, "cmov%s %1D, %2S", cmp_suffix, irn, irn);
+ else
+ lc_esnprintf(arg_env, cmd_buf, SNPRINTF_BUF_LEN, "cmov%s %1D, %3S", cmp_suffix, irn, irn);
+
lc_esnprintf(arg_env, cmnt_buf, SNPRINTF_BUF_LEN, "/* condition is true case */" );
IA32_DO_EMIT(irn);
}
conv_cmd = "cbw";
else if (n == 16 || m == 16)
conv_cmd = "cwde";
- else
+ else {
+ printf("%d -> %d unsupported\n", n, m);
assert(0 && "unsupported Conv_I2I");
+ }
}
switch(get_ia32_op_type(irn)) {
FILE *F = env->out;
char cmd_buf[256], cmnt_buf[256];
const lc_arg_env_t *arg_env = ia32_get_arg_env();
-
- if (get_ia32_Immop_tarval(n) == get_tarval_null(get_irn_mode(n))) {
- const char *instr = "xor";
- if (env->isa->opt_arch == arch_pentium_4) {
- /* P4 prefers sub r, r, others xor r, r */
- instr = "sub";
- }
- lc_esnprintf(arg_env, cmd_buf, 256, "%s %1D, %1D ", instr, n, n);
- lc_esnprintf(arg_env, cmnt_buf, 256, "/* optimized mov 0 to register */");
- }
- else {
- if (get_ia32_op_type(n) == ia32_SymConst) {
- lc_esnprintf(arg_env, cmd_buf, 256, "mov %1D, OFFSET FLAT:%C ", n, n);
- lc_esnprintf(arg_env, cmnt_buf, 256, "/* Move address of SymConst into register */");
- }
- else {
+ ir_mode *mode = get_irn_mode(n);
+ tarval *tv = get_ia32_Immop_tarval(n);
+
+ if (get_ia32_op_type(n) == ia32_SymConst) {
+ lc_esnprintf(arg_env, cmd_buf, 256, "mov %1D, OFFSET FLAT:%C ", n, n);
+ lc_esnprintf(arg_env, cmnt_buf, 256, "/* Move address of SymConst into register */");
+ } else {
+ assert(mode == get_tarval_mode(tv));
+ /* beware: in some rare cases mode is mode_b which has no tarval_null() */
+ if (tv == get_tarval_b_false() || tv == get_tarval_null(mode)) {
+ const char *instr = "xor";
+ if (env->isa->opt_arch == arch_pentium_4) {
+ /* P4 prefers sub r, r, others xor r, r */
+ instr = "sub";
+ }
+ lc_esnprintf(arg_env, cmd_buf, 256, "%s %1D, %1D ", instr, n, n);
+ lc_esnprintf(arg_env, cmnt_buf, 256, "/* optimized mov 0 to register */");
+ } else {
lc_esnprintf(arg_env, cmd_buf, 256, "mov %1D, %C ", n, n);
lc_esnprintf(arg_env, cmnt_buf, 256, "/* Mov Const into register */");
}
* Emits code to increase stack pointer.
*/
static void emit_ia32_AddSP(const ir_node *irn, ia32_emit_env_t *emit_env) {
- FILE *F = emit_env->out;
+ FILE *F = emit_env->out;
char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
if (is_ia32_ImmConst(irn)) {
IA32_DO_EMIT(irn);
}
+/**
+ * Emits code to increase stack pointer.
+ */
+static void emit_ia32_SubSP(const ir_node *irn, ia32_emit_env_t *emit_env) {
+ FILE *F = emit_env->out;
+ char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
+
+ if (is_ia32_ImmConst(irn)) {
+ lc_esnprintf(ia32_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "add %1D, %C", irn, irn);
+ }
+ else if (is_ia32_ImmSymConst(irn)) {
+ if (get_ia32_op_type(irn) == ia32_Normal)
+ lc_esnprintf(ia32_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "add %1D, OFFSET_FLAT:%C", irn, irn);
+ else /* source address mode */
+ lc_esnprintf(ia32_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "add %1D, [%s%s]", irn, get_id_str(get_ia32_am_sc(irn)), get_ia32_am_offs(irn));
+ }
+ else {
+ lc_esnprintf(ia32_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "add %1D, %2S", irn, irn);
+ }
+ snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "/* free space on stack */");
+
+ IA32_DO_EMIT(irn);
+}
+
+/**
+ * Emits code to load the TLS base
+ */
+static void emit_ia32_LdTls(const ir_node *irn, ia32_emit_env_t *emit_env) {
+ FILE *F = emit_env->out;
+ char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
+
+ switch (asm_flavour) {
+ case ASM_LINUX_GAS:
+ lc_esnprintf(ia32_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "mov %1D, DWORD PTR %%gs:0", irn);
+ break;
+ case ASM_MINGW_GAS:
+ lc_esnprintf(ia32_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "mov %1D, DWORD PTR %%gs:0", irn);
+ break;
+ default:
+ assert(0 && "unsupported TLS");
+ break;
+ }
+ snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "/* get thread local storage base */");
+
+ IA32_DO_EMIT(irn);
+}
+
static void emit_be_Return(const ir_node *n, ia32_emit_env_t *env) {
FILE *F = env->out;
const lc_arg_env_t *arg_env = ia32_get_arg_env();
IA32_EMIT(Conv_I2I8Bit);
IA32_EMIT(Const);
IA32_EMIT(AddSP);
+ IA32_EMIT(SubSP);
+ IA32_EMIT(LdTls);
IA32_EMIT(xCmp);
IA32_EMIT(xCmpSet);
IA32_EMIT(xCmpCMov);
#undef IA32_EMIT
}
+static const char *last_name = NULL;
+static unsigned last_line = -1;
+static unsigned num = -1;
+
+/**
+ * Emit the debug support for node irn.
+ */
+static void ia32_emit_dbg(const ir_node *irn, ia32_emit_env_t *env) {
+ dbg_info *db = get_irn_dbg_info(irn);
+ unsigned lineno;
+ const char *fname = be_retrieve_dbg_info(db, &lineno);
+
+ if (fname) {
+ if (last_name != fname) {
+ last_line = -1;
+ be_dbg_include_begin(env->cg->birg->main_env->db_handle, fname);
+ last_name = fname;
+ }
+ if (last_line != lineno) {
+ char name[64];
+ FILE *F = env->out;
+
+ snprintf(name, sizeof(name), ".LM%u", ++num);
+ last_line = lineno;
+ be_dbg_line(env->cg->birg->main_env->db_handle, lineno, name);
+ fprintf(F, "%s:\n", name);
+ }
+ }
+}
+
/**
* Emits code for a node.
*/
if (op->ops.generic) {
void (*emit)(const ir_node *, void *) = (void (*)(const ir_node *, void *))op->ops.generic;
+ ia32_emit_dbg(irn, emit_env);
(*emit)(irn, env);
}
else {
static void ia32_emit_align_func(FILE *F, cpu_support cpu) {
unsigned align; unsigned maximum_skip;
- /* gcc doesn't emit alignment for p4 ?*/
- if (cpu == arch_pentium_4)
- return;
-
switch (cpu) {
case arch_i386:
- align = 2; maximum_skip = 3;
+ align = 2;
break;
case arch_i486:
- align = 4; maximum_skip = 15;
+ align = 4;
break;
case arch_k6:
- align = 5; maximum_skip = 31;
+ align = 5;
break;
default:
- align = 4; maximum_skip = 15;
+ align = 4;
}
+ maximum_skip = (1 << align) - 1;
ia32_emit_alignment(F, align, maximum_skip);
}
static void ia32_emit_align_label(FILE *F, cpu_support cpu) {
unsigned align; unsigned maximum_skip;
- /* gcc doesn't emit alignment for p4 ?*/
- if (cpu == arch_pentium_4)
- return;
-
switch (cpu) {
case arch_i386:
- align = 2; maximum_skip = 3;
+ align = 2;
break;
case arch_i486:
- align = 4; maximum_skip = 15;
+ align = 4;
break;
case arch_k6:
- align = 5; maximum_skip = 7;
+ align = 5;
break;
default:
- align = 4; maximum_skip = 7;
+ align = 4;
}
+ maximum_skip = (1 << align) - 1;
ia32_emit_alignment(F, align, maximum_skip);
}
}
/* emit the contents of the block */
+ ia32_emit_dbg(block, env);
sched_foreach(block, irn) {
ia32_emit_node(irn, env);
}
/**
* Emits code for function start.
*/
-static void ia32_emit_func_prolog(FILE *F, ir_graph *irg, cpu_support cpu) {
+static void ia32_emit_func_prolog(FILE *F, ir_graph *irg, ia32_emit_env_t *emit_env) {
entity *irg_ent = get_irg_entity(irg);
const char *irg_name = get_entity_ld_name(irg_ent);
+ cpu_support cpu = emit_env->isa->opt_arch;
+ const be_irg_t *birg = emit_env->cg->birg;
fprintf(F, "\n");
ia32_switch_section(F, SECTION_TEXT);
+ be_dbg_method_begin(birg->main_env->db_handle, irg_ent, be_abi_get_stack_layout(birg->abi));
ia32_emit_align_func(F, cpu);
if (get_entity_visibility(irg_ent) == visibility_external_visible) {
fprintf(F, ".globl %s\n", irg_name);
/**
* Emits code for function end
*/
-static void ia32_emit_func_epilog(FILE *F, ir_graph *irg) {
+static void ia32_emit_func_epilog(FILE *F, ir_graph *irg, ia32_emit_env_t *emit_env) {
const char *irg_name = get_entity_ld_name(get_irg_entity(irg));
+ const be_irg_t *birg = emit_env->cg->birg;
ia32_dump_function_size(F, irg_name);
+ be_dbg_method_end(birg->main_env->db_handle);
fprintf(F, "\n");
}
ia32_register_emitters();
- ia32_emit_func_prolog(F, irg, emit_env.isa->opt_arch);
+ ia32_emit_func_prolog(F, irg, &emit_env);
irg_block_walk_graph(irg, ia32_gen_labels, NULL, &emit_env);
if ((cg->opt & IA32_OPT_EXTBB) && cg->blk_sched) {
irg_walk_blkwise_graph(irg, NULL, ia32_gen_block, &emit_env);
}
- ia32_emit_func_epilog(F, irg);
+ ia32_emit_func_epilog(F, irg, &emit_env);
}
projects / libfirm / blobdiff