X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbestabs.c;h=501e7bb3eb7556e36b9e1c6a11c5d46e8ab7136a;hb=afbbc0b1ccd684c4c24bfd43d0f994123245f39f;hp=a85b634d8f29495863903518057734a399dc283f;hpb=a02845e8e712b9597b9b322df8b0019b4634f9a1;p=libfirm diff --git a/ir/be/bestabs.c b/ir/be/bestabs.c index a85b634d8..501e7bb3e 100644 --- a/ir/be/bestabs.c +++ b/ir/be/bestabs.c @@ -1,139 +1,839 @@ -/** - * 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. */ +/** + * @file + * @brief Stabs support. + * @author Michael Beck + * @date 11.9.2006 + * @version $Id$ + */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include #include +#include -#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" -/* 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 */ + 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 /** - * prints a line number + * mode_info for output as decimal */ -static void stabs_line(dbg_handle *handle, unsigned lineno, const char *address) { +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); +} + +/** + * 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_irprintf("\t.stabs\t\"%s:t%u=r%u;", get_type_name(tp), 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_irprintf("\t.stabs\t\"%s:t%u=r1;%d;0;\",%d,0,0,0\n", get_type_name(tp), 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_irprintf("\t.stabs\t\"%s:T%u=e", get_type_name(tp), 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_name(ec), buf); + } + be_emit_irprintf(";\",%d,0,0,0\n", N_LSYM); + be_emit_write_line(); +} /* gen_enum_type */ + +/** + * print a pointer type + */ +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_irprintf("\t.stabs\t\"%s:t", get_type_name(tp)); + 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_irprintf("\t.stabs\t\"%s:t", get_type_name(tp)); + + 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_irprintf("\t.stabs\t\"%s:Tt%u=%c%d", + get_type_name(tp), 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_irprintf("\t.stabs\t\"%s:t%u=f%u", get_type_name(tp), 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 */ + +/** + * type-walker: generate declaration for simple types, + * put all other types on a wait queue + */ +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,.Ltext0\n", filename, N_SO); + 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, ir_entity *ent, const be_stack_layout_t *layout) { stabs_handle *h = (stabs_handle *)handle; - ir_type *tp; - unsigned type_num; + ir_type *mtp, *rtp; + unsigned type_num; + int i, n, between_size; 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', 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); + } + + 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; + 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 */ -/* close the stabs handler */ +/** + * 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, 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) == visibility_external_visible) { + /* 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); + } else { /* some kind of local */ + ir_variability variability = get_entity_variability(ent); + int kind = N_STSYM; + + if (variability == variability_uninitialized) + kind = N_LCSYM; + else if (variability == variability_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)); + } + 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)); +dbg_handle *be_stabs_open(void) { + stabs_handle *h = XMALLOC(stabs_handle); - h->base.ops = &stabs_ops; - h->f = out; - return &h->base; -} /* stabs_open */ + h->base.ops = &stabs_ops; + h->cur_ent = NULL; + h->layout = NULL; + h->next_type_nr = 0; + h->type_map = pmap_create_ex(64); + h->main_file = NULL; + h->curr_file = NULL; -/** close a debug handler. */ -void be_dbg_close(dbg_handle *h) { - if (h->ops->close) - h->ops->close(h); -} /* be_dbg_close */ - -/** - * 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 */ + return &h->base; +} -/** 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 */ +void be_init_stabs(void) +{ + be_register_dbgout_module("stabs", be_stabs_open); +} -/** 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);