-/**
- * Stabs support.
+/*
+ * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved.
+ *
+ * This file is part of libFirm.
+ *
+ * This file may be distributed and/or modified under the terms of the
+ * GNU General Public License version 2 as published by the Free Software
+ * Foundation and appearing in the file LICENSE.GPL included in the
+ * packaging of this file.
*
- * @author Michael Beck
- * @date 11.9.2006
- * @cvsid $Id$
+ * Licensees holding valid libFirm Professional Edition licenses may use
+ * this file in accordance with the libFirm Commercial License.
+ * Agreement provided with the Software.
+ *
+ * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+ * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE.
*/
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
+/**
+ * @file
+ * @brief Stabs support.
+ * @author Michael Beck
+ * @date 11.9.2006
+ * @version $Id$
+ */
+#include "config.h"
#include <stdio.h>
#include <stdlib.h>
+#include <assert.h>
-#include "entity.h"
+#include "obst.h"
+#include "irprog.h"
+#include "irgraph.h"
+#include "tv.h"
#include "xmalloc.h"
-#include "be_dbgout.h"
+#include "pmap.h"
+#include "pdeq.h"
+#include "irtools.h"
+#include "obst.h"
+#include "array_t.h"
+#include "be_dbgout_t.h"
+#include "beabi.h"
+#include "bemodule.h"
+#include "beemitter.h"
+#include "dbginfo.h"
+#include "begnuas.h"
-/* stabs types */
+/* Non-Stab Symbol and Stab Symbol Types */
enum stabs_types {
- NIL = 0,
- N_GSYM = 32, /**< global symbol */
- N_FUN = 36, /**< procedure */
- N_STSYM = 38, /**< Initialized static variable */
- N_LCSYM = 40, /**< uninitialized static var */
- N_RSYM = 64, /**< global register variable */
- N_SLINE = 68,
- N_SO = 100, /**< name and path of the source file */
- N_LSYM = 128, /**< local symbol */
- N_PSYM = 160, /**< parameters to a function */
- N_LBRAC = 192, /**< left brace */
- N_RBRAC = 224, /**< right brace */
+ N_UNDF = 0x00, /**< 0: Undefined symbol */
+ N_ABS = 0x02, /**< 2: File scope absolute symbol */
+ N_TEXT = 0x04, /**< 4: File scope text symbol */
+ N_DATA = 0x06, /**< 6: File scope data symbol */
+ N_BSS = 0x08, /**< 8: File scope BSS symbol */
+ N_INDR = 0x0A, /**< 10: Symbol is indirected to another symbol */
+ N_FN_SEQ = 0x0C, /**< 12: Same as N_FN, for Sequent compilers */
+ N_COMM = 0x12, /**< 18: Common--visible after shared library dynamic link */
+ N_SETA = 0x14, /**< 20: Absolute set element */
+ N_SETT = 0x17, /**< 23: Text segment set element */
+ N_SETD = 0x18, /**< 24: Data segment set element */
+ N_SETB = 0x1A, /**< 26: BSS segment set element */
+ N_SETV = 0x1C, /**< 28: Pointer to set vector */
+ N_WARNING = 0x1E, /**< 30: Print a warning message during linking */
+ N_FN = 0x1F, /**< 31: File name of a `.o' file */
+ N_GSYM = 0x20, /**< 32: Global symbol */
+ N_FNAME = 0x22, /**< 34: Function name (for BSD Fortran) */
+ N_FUN = 0x24, /**< 36: Function name */
+ N_STSYM = 0x26, /**< 38: Data segment file-scope variable */
+ N_LCSYM = 0x28, /**< 40: BSS segment file-scope variable */
+ N_MAIN = 0x2A, /**< 42: Name of main routine */
+ N_ROSYM = 0x2C, /**< 44: Variable in .rodata section */
+ N_PC = 0x30, /**< 48: Global symbol (for Pascal) */
+ N_NSYMS = 0x32, /**< 50: Number of symbols (according to Ultrix V4.0) */
+ N_NOMAP = 0x34, /**< 52: No DST map */
+ N_OBJ = 0x38, /**< 56: Object file (Solaris2) */
+ N_OPT = 0x3C, /**< 60: Debugger options (Solaris2) */
+ N_RSYM = 0x40, /**< 64: Register variable */
+ N_M2C = 0x42, /**< 66: Modula-2 compilation unit */
+ N_SLINE = 0x44, /**< 68: Line number in text segment */
+ N_DSLINE = 0x46, /**< 70: Line number in data segment */
+ N_BSLINE = 0x48, /**< 72: Line number in bss segment */
+ N_BROWS = 0x48, /**< 72: Sun source code browser, path to `.cb' file */
+ N_DEFD = 0x4A, /**< 74: GNU Modula2 definition module dependency */
+ N_FLINE = 0x4C, /**< 76: Function start/body/end line numbers (Solaris2) */
+ N_EHDECL = 0x50, /**< 80: GNU C++ exception variable */
+ N_MOD2 = 0x50, /**< 80: Modula2 info "for imc" (according to Ultrix V4.0) */
+ N_CATCH = 0x54, /**< 84: GNU C++ catch clause */
+ N_SSYM = 0x60, /**< 96: Structure of union element */
+ N_ENDM = 0x62, /**< 98: Last stab for module (Solaris2) */
+ N_SO = 0x64, /**< 100: Path and name of source file */
+ N_LSYM = 0x80, /**< 128: Stack variable */
+ N_BINCL = 0x82, /**< 130: Beginning of an include file (Sun only) */
+ N_SOL = 0x84, /**< 132: Name of include file */
+ N_PSYM = 0xA0, /**< 160: Parameter variable */
+ N_EINCL = 0xA2, /**< 162: End of an include file */
+ N_ENTRY = 0xA4, /**< 164: Alternate entry point */
+ N_LBRAC = 0xC0, /**< 192: Beginning of a lexical block */
+ N_EXCL = 0xC2, /**< 194: Place holder for a deleted include file */
+ N_SCOPE = 0xC4, /**< 196: Modula2 scope information (Sun linker) */
+ N_RBRAC = 0xE0, /**< 224: End of a lexical block */
+ N_BCOMM = 0xE2, /**< 226: Begin named common block */
+ N_ECOMM = 0xE4, /**< 228: End named common block */
+ N_ECOML = 0xE8, /**< 232: Member of a common block */
+ N_WITH = 0xEA, /**< 234: Pascal with statement: type,,0,0,offset (Solaris2) */
+ N_NBTEXT = 0xF0, /**< 240: Gould non-base registers */
+ N_NBDATA = 0xF2, /**< 242: Gould non-base registers */
+ N_NBBSS = 0xF4, /**< 244: Gould non-base registers */
+ N_NBSTS = 0xF6, /**< 246: Gould non-base registers */
+ N_NBLCS = 0xF8, /**< 248: Gould non-base registers */
};
/**
* The stabs handle.
*/
typedef struct stabs_handle {
- dbg_handle base; /**< the base class */
- FILE *f; /**< the file write to */
- entity *cur_ent;
+ dbg_handle base; /**< the base class */
+ const ir_entity *cur_ent; /**< current method entity */
+ const be_stack_layout_t *layout; /**< current stack layout */
+ unsigned next_type_nr; /**< next type number */
+ pmap *type_map; /**< a map from type to type number */
+ const char *main_file; /**< name of the main source file */
+ const char *curr_file; /**< name of the current source file */
+ unsigned label_num;
+ unsigned last_line;
} stabs_handle;
/**
* Returns the stabs type number of a Firm type.
*/
-static unsigned get_type_number(ir_type *tp) {
- return 0;
+static unsigned get_type_number(stabs_handle *h, ir_type *tp)
+{
+ pmap_entry *entry;
+ unsigned num;
+
+ if (tp == NULL) {
+ /* map to the void type */
+ return 0;
+ }
+ entry = pmap_find(h->type_map, tp);
+ if (! entry) {
+ num = h->next_type_nr++;
+ pmap_insert(h->type_map, tp, INT_TO_PTR(num));
+ } else {
+ num = PTR_TO_INT(entry->value);
+ }
+ return num;
} /* get_type_number */
/**
- * begin a new file
+ * Map a given Type to void by assigned the type number 0.
*/
-static void stabs_begin(dbg_handle *handle, const char *filename) {
- stabs_handle *h = (stabs_handle *)handle;
- fprintf(h->f, ".stabs \"%s\",%d,0,0,.Ltext0\n", filename, N_SO);
-} /* stabs_begin */
+static void map_to_void(stabs_handle *h, ir_type *tp)
+{
+ pmap_insert(h->type_map, tp, INT_TO_PTR(0));
+}
+
+/**
+ * generate the void type.
+ */
+static void gen_void_type(stabs_handle *h)
+{
+ (void) h;
+ be_emit_irprintf("\t.stabs\t\"void:t%u=%u\",%d,0,0,0\n", 0, 0, N_LSYM);
+ be_emit_write_line();
+} /* gen_void_type */
+
+typedef struct walker_env {
+ stabs_handle *h;
+ waitq *wq;
+} wenv_t;
+
+/* a type is not ready: put it on the wait queue */
+#define SET_TYPE_NOT_READY(wq, tp) \
+ do { \
+ set_type_link(tp, (void *)1); \
+ waitq_put(wq, tp); \
+ } while (0)
+
+/* a the is ready */
+#define SET_TYPE_READY(tp) set_type_link(tp, NULL)
+
+/* check whether a type is ready */
+#define IS_TYPE_READY(tp) (get_type_link(tp) == NULL)
+
+#ifdef EXPLICITE_PTR_TYPES
+#define SKIP_PTR(tp) tp
+#else
+#define SKIP_PTR(tp) (is_Pointer_type(tp) ? get_pointer_points_to_type(tp) : tp)
+#endif
+
+/**
+ * mode_info for output as decimal
+ */
+static const tarval_mode_info dec_output = {
+ TVO_DECIMAL,
+ NULL,
+ NULL,
+};
+
+/**
+ * emit a tarval as decimal
+ */
+static void be_emit_tv_as_decimal(tarval *tv)
+{
+ ir_mode *mode = get_tarval_mode(tv);
+ const tarval_mode_info *old = get_tarval_mode_output_option(mode);
+
+ set_tarval_mode_output_option(mode, &dec_output);
+ be_emit_tarval(tv);
+ set_tarval_mode_output_option(mode, old);
+}
+
+static void emit_type_name(const ir_type *type)
+{
+ char *c;
+ char buf[256];
+ ir_print_type(buf, sizeof(buf), type);
+ /* replace special chars to be on the safe side */
+ for (c = buf; *c != '\0'; ++c) {
+ if (*c == '\n' || *c == '"' || *c == '\\')
+ *c = '?';
+ }
+ be_emit_string(buf);
+}
+
+/**
+ * Generates a primitive type.
+ *
+ * @param h the stabs handle
+ * @param tp the type
+ */
+static void gen_primitive_type(stabs_handle *h, ir_type *tp)
+{
+ ir_mode *mode = get_type_mode(tp);
+ unsigned type_num;
+
+ SET_TYPE_READY(tp);
+ if (mode == mode_T) {
+ /* firmcc, jack and the FirmJC compiler use mode_T for the void type.
+ Ignore it here as it's name is remapped to "void". */
+ map_to_void(h, tp);
+ return;
+ } /* if */
+
+ if (0 && get_mode_size_bits(mode) & 7) {
+ /* this is a bitfield type, ignore it */
+ return;
+ } /* if */
+
+ type_num = get_type_number(h, tp);
+
+ if (mode_is_int(mode)) {
+ be_emit_cstring("\t.stabs\t\"");
+ emit_type_name(tp);
+ be_emit_irprintf(":t%u=r%u;", type_num, type_num);
+ be_emit_tv_as_decimal(get_mode_min(mode));
+ be_emit_char(';');
+ be_emit_tv_as_decimal(get_mode_max(mode));
+ be_emit_irprintf(";\",%d,0,0,0\n", N_LSYM);
+ be_emit_write_line();
+ } else if (mode_is_float(mode)) {
+ int size = get_type_size_bytes(tp);
+ be_emit_cstring("\t.stabs\t\"");
+ emit_type_name(tp);
+ be_emit_irprintf(":t%u=r1;%d;0;\",%d,0,0,0\n", type_num, size, N_LSYM);
+ be_emit_write_line();
+ }
+} /* gen_primitive_type */
+
+/**
+ * Generates an enum type
+ *
+ * @param h the stabs handle
+ * @param tp the type
+ */
+static void gen_enum_type(stabs_handle *h, ir_type *tp)
+{
+ unsigned type_num = get_type_number(h, tp);
+ int i, n;
+
+ SET_TYPE_READY(tp);
+ be_emit_cstring("\t.stabs\t\"");
+ emit_type_name(tp);
+ be_emit_irprintf(":T%u=e", type_num);
+ for (i = 0, n = get_enumeration_n_enums(tp); i < n; ++i) {
+ ir_enum_const *ec = get_enumeration_const(tp, i);
+ char buf[64];
+
+ tarval_snprintf(buf, sizeof(buf), get_enumeration_value(ec));
+ be_emit_irprintf("%s:%s,", get_enumeration_const_name(ec), buf);
+ }
+ be_emit_irprintf(";\",%d,0,0,0\n", N_LSYM);
+ be_emit_write_line();
+} /* gen_enum_type */
+
+/**
+ * print a pointer type
+ */
+static void print_pointer_type(stabs_handle *h, ir_type *tp, int local)
+{
+ unsigned type_num = local ? h->next_type_nr++ : get_type_number(h, tp);
+ ir_type *el_tp = get_pointer_points_to_type(tp);
+ unsigned el_num = get_type_number(h, el_tp);
+
+ be_emit_irprintf("%u=*%u", type_num, el_num);
+}
+
+/**
+ * Generates a pointer type
+ *
+ * @param env the walker environment
+ * @param tp the type
+ */
+static void gen_pointer_type(wenv_t *env, ir_type *tp)
+{
+ stabs_handle *h = env->h;
+ ir_type *el_tp = get_pointer_points_to_type(tp);
+
+ SET_TYPE_READY(tp);
+ if (! IS_TYPE_READY(el_tp))
+ waitq_put(env->wq, el_tp);
+
+ be_emit_cstring("\t.stabs\t\"");
+ emit_type_name(tp);
+ be_emit_cstring(":t");
+ print_pointer_type(h, tp, 0);
+ be_emit_irprintf("\",%d,0,0,0\n", N_LSYM);
+ be_emit_write_line();
+} /* gen_pointer_type */
+
+/**
+ * print an array type
+ */
+static void print_array_type(stabs_handle *h, ir_type *tp, int local)
+{
+ ir_type *etp = get_array_element_type(tp);
+ int i, n = get_array_n_dimensions(tp);
+ unsigned type_num = local ? h->next_type_nr++ : get_type_number(h, tp);
+ int *perm;
+
+ be_emit_irprintf("%u=a", type_num);
+ NEW_ARR_A(int, perm, n);
+ for (i = 0; i < n; ++i) {
+ perm[i] = get_array_order(tp, i);
+ }
+
+ for (i = 0; i < n; ++i) {
+ int dim = perm[i];
+
+ if (is_Const(get_array_lower_bound(tp, dim)) && is_Const(get_array_upper_bound(tp, dim))) {
+ long min = get_array_lower_bound_int(tp, dim);
+ long max = get_array_upper_bound_int(tp, dim);
+
+ /* FIXME r1 must be integer type, but seems to work for now */
+ be_emit_irprintf("r1;%ld;%ld;", min, max-1);
+ }
+ }
+
+ type_num = get_type_number(h, etp);
+ be_emit_irprintf("%d", type_num);
+}
+
+/**
+ * Generates an array type
+ *
+ * @param env the walker environment
+ * @param tp the type
+ */
+static void gen_array_type(wenv_t *env, ir_type *tp)
+{
+ stabs_handle *h = env->h;
+ ir_type *etp = get_array_element_type(tp);
+
+ SET_TYPE_READY(tp);
+ if (! IS_TYPE_READY(etp))
+ waitq_put(env->wq, etp);
+
+ be_emit_cstring("\t.stabs\t\"");
+ emit_type_name(tp);
+ be_emit_cstring(":t");
+
+ print_array_type(h, tp, 0);
+
+ be_emit_irprintf("\",%d,0,0,0\n", N_LSYM);
+ be_emit_write_line();
+} /* gen_array_type */
+
+/**
+ * Generates a struct/union type
+ *
+ * @param env the walker environment
+ * @param tp the type
+ */
+static void gen_struct_union_type(wenv_t *env, ir_type *tp)
+{
+ stabs_handle *h = env->h;
+ unsigned type_num = get_type_number(h, tp);
+ int i, n;
+ char desc = 's';
+
+ SET_TYPE_READY(tp);
+ if (is_Struct_type(tp)) {
+ desc = 's';
+ if (get_type_mode(tp) != NULL) {
+ /* this is a bitfield type, ignore it safely */
+ return;
+ }
+ }
+ else if (is_Union_type(tp))
+ desc = 'u';
+
+ be_emit_cstring("\t.stabs\t\"");
+ emit_type_name(tp);
+ be_emit_irprintf(":Tt%u=%c%d", type_num, desc, get_type_size_bytes(tp));
+
+ for (i = 0, n = get_compound_n_members(tp); i < n; ++i) {
+ ir_entity *ent = get_compound_member(tp, i);
+ ir_type *mtp = get_entity_type(ent);
+ int ofs;
+ unsigned size;
+
+ if (! IS_TYPE_READY(mtp))
+ waitq_put(env->wq, mtp);
+ ofs = get_entity_offset(ent);
+ if (is_Struct_type(mtp) && get_type_mode(mtp) != NULL) {
+ /* this structure is a bitfield, skip */
+ int i, n;
+
+ for (i = 0, n = get_struct_n_members(mtp); i < n; ++i) {
+ ir_entity *ent = get_struct_member(mtp, i);
+ ir_type *tp = get_entity_type(ent);
+ int bofs;
+
+ type_num = get_type_number(h, tp);
+ size = get_type_size_bytes(tp) * 8;
+ bofs = (ofs + get_entity_offset(ent)) * 8 + get_entity_offset_bits_remainder(ent);
+
+ /* name:type, bit offset from the start of the struct', number of bits in the element. */
+ be_emit_irprintf("%s:%u,%d,%u;", get_entity_name(ent), type_num, bofs, size);
+ }
+ } else {
+ /* no bitfield */
+ be_emit_irprintf("%s:", get_entity_name(ent));
+
+ if (is_Array_type(mtp)) {
+ /* use a local array definition */
+ print_array_type(h, mtp, 1);
+ } else if (is_Pointer_type(mtp)) {
+ /* use local pointer definition */
+ print_pointer_type(h, mtp, 1);
+ } else {
+ type_num = get_type_number(h, mtp);
+
+ /* name:type, bit offset from the start of the struct', number of bits in the element. */
+ be_emit_irprintf("%u", type_num);
+ }
+ size = get_type_size_bytes(mtp) * 8;
+ be_emit_irprintf(",%d,%u;", ofs * 8, size);
+ }
+ }
+ be_emit_irprintf(";\",%d,0,0,0\n", N_LSYM);
+ be_emit_write_line();
+} /* gen_struct_type */
+
+/**
+ * Generates a method type
+ *
+ * @param env the walker environment
+ * @param tp the type
+ */
+static void gen_method_type(wenv_t *env, ir_type *tp)
+{
+ stabs_handle *h = env->h;
+ unsigned type_num = get_type_number(h, tp);
+ ir_type *rtp = NULL;
+ unsigned res_type_num;
+ int i, n = get_method_n_ress(tp);
+
+ SET_TYPE_READY(tp);
+ if (n > 0) {
+ rtp = get_method_res_type(tp, 0);
+ if (! IS_TYPE_READY(rtp))
+ waitq_put(env->wq, rtp);
+ }
+ res_type_num = get_type_number(h, rtp);
+
+ be_emit_cstring("\t.stabs\t\"");
+ emit_type_name(tp);
+ be_emit_irprintf(":t%u=f%u", type_num, res_type_num);
+
+ /* handle more than one return type */
+ for (i = 1; i < n; ++i) {
+ rtp = get_method_res_type(tp, i);
+ if (! IS_TYPE_READY(rtp))
+ waitq_put(env->wq, rtp);
+ res_type_num = get_type_number(h, rtp);
+ be_emit_irprintf(",%u", res_type_num);
+ }
+ be_emit_irprintf("\",%d,0,0,0\n", N_LSYM);
+ be_emit_write_line();
+} /* gen_method_type */
/**
- * prints a line number
+ * type-walker: generate declaration for simple types,
+ * put all other types on a wait queue
*/
-static void stabs_line(dbg_handle *handle, unsigned lineno, const char *address) {
+static void walk_type(type_or_ent tore, void *ctx)
+{
+ wenv_t *env = ctx;
+ ir_type *tp;
+
+ if (is_type(tore.typ)) {
+ tp = tore.typ;
+
+ /* ignore the unknown type */
+ if (tp == firm_unknown_type)
+ return;
+ } else {
+ return;
+ } /* if */
+
+ switch (get_type_tpop_code(tp)) {
+ case tpo_class:
+ if (tp == get_glob_type()) {
+ SET_TYPE_READY(tp);
+ break;
+ }
+ /* fall through */
+ case tpo_struct:
+ case tpo_union:
+ gen_struct_union_type(env, tp);
+ break;
+
+ case tpo_enumeration:
+ gen_enum_type(env->h, tp);
+ break;
+
+ case tpo_primitive:
+ gen_primitive_type(env->h, tp);
+ break;
+
+ case tpo_method:
+ gen_method_type(env, tp);
+ break;
+
+ case tpo_array:
+ gen_array_type(env, tp);
+ break;
+
+ case tpo_pointer:
+ gen_pointer_type(env, tp);
+ break;
+
+ case tpo_unknown:
+ /* the unknown type: ignore */
+ SET_TYPE_READY(tp);
+ break;
+ default:
+ assert(! "Unknown tpop code");
+ } /* switch */
+} /* walk_type */
+
+/**
+ * generate declaration for all types
+ */
+static void finish_types(wenv_t *env)
+{
+ waitq *wq = env->wq;
+ ir_type *tp;
+
+ while (! waitq_empty(wq)) {
+ tp = waitq_get(wq);
+ if (IS_TYPE_READY(tp))
+ continue;
+
+ switch (get_type_tpop_code(tp)) {
+ case tpo_method:
+ gen_method_type(env, tp);
+ break;
+ case tpo_class:
+ case tpo_union:
+ case tpo_struct:
+ gen_struct_union_type(env, tp);
+ break;
+ case tpo_enumeration:
+ gen_enum_type(env->h, tp);
+ break;
+ case tpo_primitive:
+ gen_primitive_type(env->h, tp);
+ break;
+ case tpo_array:
+ gen_array_type(env, tp);
+ break;
+ case tpo_pointer:
+ gen_pointer_type(env, tp);
+ break;
+ case tpo_unknown:
+ /* the unknown type: ignore */
+ SET_TYPE_READY(tp);
+ break;
+ default:
+ assert(! "Unknown tpop code");
+ } /* switch */
+ } /* while */
+} /* finish_types */
+
+/**
+ * generate all types.
+ */
+static void gen_types(stabs_handle *h)
+{
+ wenv_t env;
+
+ env.h = h;
+ env.wq = new_waitq();
+ type_walk(NULL, walk_type, &env);
+ finish_types(&env);
+ del_waitq(env.wq);
+} /* gen_types */
+
+
+/* -------------------------- I/F ----------------------------- */
+
+/**
+ * start a new source object (compilation unit)
+ */
+static void stabs_so(dbg_handle *handle, const char *filename)
+{
stabs_handle *h = (stabs_handle *)handle;
- fprintf(h->f, ".stabn %d, 0, %u, %s-%s\n", N_SLINE, lineno, address, get_entity_ld_name(h->cur_ent));
-} /* stabs_line */
+ h->main_file = h->curr_file = filename;
+ be_emit_irprintf("\t.stabs\t\"%s\",%d,0,0,%stext0\n", filename, N_SO, be_gas_get_private_prefix());
+ be_emit_write_line();
+} /* stabs_so */
+
+/**
+ * Main Program
+ */
+static void stabs_main_program(dbg_handle *handle)
+{
+ ir_graph *irg = get_irp_main_irg();
+
+ (void) handle;
+ if (irg) {
+ be_emit_irprintf("\t.stabs\t\"%s\",%d,0,0,0\n", get_entity_name(get_irg_entity(irg)), N_MAIN);
+ be_emit_write_line();
+ }
+} /* stabs_main_program */
+
+static void stabs_set_dbg_info(dbg_handle *h, dbg_info *dbgi)
+{
+ stabs_handle *handle = (stabs_handle*) h;
+ unsigned lineno;
+ const char *fname = ir_retrieve_dbg_info(dbgi, &lineno);
+
+ if (fname == NULL)
+ return;
+
+ if (handle->curr_file != fname) {
+ if (fname != handle->main_file) {
+ be_emit_irprintf("\t.stabs\t\"%s\",%d,0,0,0\n", fname, N_SOL);
+ be_emit_write_line();
+ }
+ handle->curr_file = fname;
+ }
+ if (handle->last_line != lineno) {
+ char label[64];
+
+ snprintf(label, sizeof(label), ".LM%u", ++handle->label_num);
+ handle->last_line = lineno;
+
+ be_emit_irprintf("\t.stabn\t%d, 0, %u, %s-%s\n", N_SLINE, lineno,
+ label, get_entity_ld_name(handle->cur_ent));
+ be_emit_write_line();
+
+ be_emit_string(label);
+ be_emit_cstring(":\n");
+ be_emit_write_line();
+ }
+}
/**
- * prints the stabs for a function
+ * dump the stabs for a method begin
*/
-static void stabs_method(dbg_handle *handle, entity *ent) {
+static void stabs_method_begin(dbg_handle *handle, const ir_entity *ent)
+{
stabs_handle *h = (stabs_handle *)handle;
- ir_type *tp;
- unsigned type_num;
+ ir_graph *irg = get_entity_irg(ent);
+ ir_type *mtp, *rtp;
+ unsigned type_num;
+ int i, n, between_size;
+ be_stack_layout_t *layout = be_get_irg_stack_layout(irg);
h->cur_ent = ent;
+ h->layout = layout;
- tp = get_entity_type(ent);
- if (get_method_n_ress(tp) > 0)
- tp = get_method_res_type(tp, 0);
+ /* create the method entry */
+ mtp = get_entity_type(ent);
+ if (is_lowered_type(mtp))
+ mtp = get_associated_type(mtp);
+ if (get_method_n_ress(mtp) > 0)
+ rtp = get_method_res_type(mtp, 0);
else
- tp = NULL;
- type_num = get_type_number(tp);
- fprintf(h->f, ".stabs \"%s:%c%u\",%u,0,0,%s\n",
+ rtp = NULL;
+ type_num = get_type_number(h, rtp);
+ be_emit_irprintf("\t.stabs\t\"%s:%c%u\",%u,0,0,%s\n",
get_entity_name(ent),
- get_entity_visibility(ent) == visibility_external_visible ? 'F' : 'f',
+ get_entity_visibility(ent) == ir_visibility_local ? 'f' : 'F',
type_num,
N_FUN,
get_entity_ld_name(ent));
-} /* stabs_method */
+ be_emit_write_line();
+
+ /* create parameter entries */
+ between_size = get_type_size_bytes(layout->between_type);
+ for (i = 0, n = get_method_n_params(mtp); i < n; ++i) {
+ ir_type *ptp = get_method_param_type(mtp, i);
+ const char *name = get_method_param_name(mtp, i);
+ unsigned type_num = get_type_number(h, ptp);
+ char buf[16];
+ int ofs = 0;
+ ir_entity *stack_ent;
+
+ if (! name) {
+ snprintf(buf, sizeof(buf), "arg%d", i);
+ name = buf;
+ }
+ /* check if this parameter has a stack entity. If it has, it
+ it transmitted on the stack, else in a register */
+ stack_ent = layout->param_map[i];
+ if (stack_ent) {
+ ofs = get_entity_offset(stack_ent) + between_size;
+ }
+ be_emit_irprintf("\t.stabs\t\"%s:p", name);
+ if (is_Array_type(ptp)) {
+ /* use a local array definition */
+ print_array_type(h, ptp, 1);
+ } else if (is_Pointer_type(ptp)) {
+ /* use local pointer definition */
+ print_pointer_type(h, ptp, 1);
+ } else {
+ type_num = get_type_number(h, ptp);
+
+ /* name:type, bit offset from the start of the struct', number of bits in the element. */
+ be_emit_irprintf("%u", type_num);
+ }
-/* close the stabs handler */
-static void stabs_close(dbg_handle *handle) {
+ be_emit_irprintf("\",%d,0,0,%d\n", N_PSYM, ofs);
+ be_emit_write_line();
+ }
+} /* stabs_method_begin */
+
+/**
+ * dump the stabs for a method end
+ */
+static void stabs_method_end(dbg_handle *handle)
+{
+ stabs_handle *h = (stabs_handle *)handle;
+ const ir_entity *ent = h->cur_ent;
+ const be_stack_layout_t *layout = h->layout;
+ const char *ld_name = get_entity_ld_name(ent);
+ int i, n, frame_size;
+ static unsigned scope_nr = 0;
+
+ /* create entries for automatic variables on the stack */
+ frame_size = get_type_size_bytes(layout->frame_type);
+ for (i = 0, n = get_compound_n_members(layout->frame_type); i < n; ++i) {
+ ir_entity *ent = get_compound_member(layout->frame_type, i);
+ ir_type *tp;
+ int ofs;
+ unsigned type_num;
+
+ /* ignore spill slots and other helper objects */
+ if (is_entity_compiler_generated(ent))
+ continue;
+
+ tp = get_entity_type(ent);
+ /* should not happen in backend but ... */
+ if (is_Method_type(tp))
+ continue;
+ type_num = get_type_number(h, tp);
+ ofs = -frame_size + get_entity_offset(ent);
+
+ be_emit_irprintf("\t.stabs\t\"%s:%u\",%d,0,0,%d\n",
+ get_entity_name(ent), type_num, N_LSYM, ofs);
+ be_emit_write_line();
+ }
+ /* we need a lexical block here */
+ be_emit_irprintf("\t.stabn\t%d,0,0,%s-%s\n", N_LBRAC, ld_name, ld_name);
+ be_emit_write_line();
+ be_emit_irprintf("\t.stabn\t%d,0,0,.Lscope%u-%s\n", N_RBRAC, scope_nr, ld_name);
+ be_emit_write_line();
+ be_emit_irprintf(".Lscope%u:\n", scope_nr);
+ be_emit_write_line();
+ ++scope_nr;
+
+ h->cur_ent = NULL;
+ h->layout = NULL;
+} /* stabs_method_end */
+
+/**
+ * dump types
+ */
+static void stabs_types(dbg_handle *handle)
+{
+ stabs_handle *h = (stabs_handle *)handle;
+
+ /* allocate the zero for the void type */
+ h->next_type_nr++;
+ gen_void_type(h);
+ gen_types(h);
+} /* stabs_types */
+
+/**
+ * dump a variable in the global type
+ */
+static void stabs_variable(dbg_handle *handle, const ir_entity *ent)
+{
stabs_handle *h = (stabs_handle *)handle;
+ unsigned tp_num = get_type_number(h, get_entity_type(ent));
+ char buf[1024];
+
+ if (get_entity_visibility(ent) == ir_visibility_local) {
+ /* some kind of local */
+ ir_linkage linkage = get_entity_linkage(ent);
+ int kind = N_STSYM;
+
+ if (linkage & IR_LINKAGE_CONSTANT)
+ kind = N_ROSYM;
+ snprintf(buf, sizeof(buf), "\t.stabs\t\"%s:S%u\",%d,0,0,%s\n",
+ get_entity_name(ent), tp_num, kind, get_entity_ld_name(ent));
+ } else {
+ /* a global variable */
+ snprintf(buf, sizeof(buf), "\t.stabs\t\"%s:G%u\",%d,0,0,0\n",
+ get_entity_name(ent), tp_num, N_GSYM);
+ }
+ buf[sizeof(buf) - 1] = '\0';
+
+ be_emit_string(buf);
+} /* stabs_variable */
+
+/**
+ * Close the stabs handler.
+ */
+static void stabs_close(dbg_handle *handle)
+{
+ stabs_handle *h = (stabs_handle *)handle;
+ pmap_destroy(h->type_map);
free(h);
} /* stabs_close */
/** The stabs operations. */
static const debug_ops stabs_ops = {
stabs_close,
- stabs_begin,
- stabs_method,
- stabs_line,
+ stabs_so,
+ stabs_main_program,
+ stabs_method_begin,
+ stabs_method_end,
+ stabs_types,
+ stabs_variable,
+ stabs_set_dbg_info
};
/* Opens a stabs handler */
-dbg_handle *be_stabs_open(FILE *out) {
- stabs_handle *h = xmalloc(sizeof(*h));
-
- h->base.ops = &stabs_ops;
- h->f = out;
- return &h->base;
-} /* stabs_open */
+static dbg_handle *be_stabs_open(void)
+{
+ stabs_handle *h = XMALLOCZ(stabs_handle);
-/** close a debug handler. */
-void be_dbg_close(dbg_handle *h) {
- if (h->ops->close)
- h->ops->close(h);
-} /* be_dbg_close */
+ h->base.ops = &stabs_ops;
+ h->type_map = pmap_create_ex(64);
-/**
- * begin a new file
- */
-void be_dbg_begin(dbg_handle *h, const char *filename) {
- if (h->ops->begin)
- h->ops->begin(h, filename);
-} /* be_dbg_begin */
-
-/** debug for a function */
-void be_dbg_method(dbg_handle *h, entity *ent) {
- if (h->ops->method)
- h->ops->method(h, ent);
-} /* be_dbg_method */
+ return &h->base;
+}
-/** debug for line number */
-void be_dbg_line(dbg_handle *h, unsigned lineno, const char *address) {
- if (h->ops->line)
- h->ops->line(h, lineno, address);
-} /* be_dbg_line */
+BE_REGISTER_MODULE_CONSTRUCTOR(be_init_stabs);
+void be_init_stabs(void)
+{
+ be_register_dbgout_module("stabs", be_stabs_open);
+}
projects / libfirm / blobdiff