X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbestabs.c;h=9a0a6ebbf613d82b20261be2389d465c1e5787eb;hb=8d07d17eb2ade0b6b4aef0ebd68d6af3cc368b06;hp=686129e3a6d4325b96890c45205cb4d5e174a309;hpb=1fa6131fa3e4b3593019b001976af0f3cc529ac5;p=libfirm diff --git a/ir/be/bestabs.c b/ir/be/bestabs.c index 686129e3a..9a0a6ebbf 100644 --- a/ir/be/bestabs.c +++ b/ir/be/bestabs.c @@ -1,11 +1,29 @@ -/** - * 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 @@ -14,17 +32,21 @@ #include #include +#include "obst.h" #include "irprog.h" -#include "entity.h" #include "irgraph.h" -#include "typewalk.h" #include "tv.h" #include "xmalloc.h" #include "pmap.h" #include "pdeq.h" #include "irtools.h" #include "obst.h" -#include "be_dbgout.h" +#include "array.h" +#include "be_dbgout_t.h" +#include "beabi.h" +#include "bemodule.h" +#include "beemitter.h" +#include "dbginfo.h" /* Non-Stab Symbol and Stab Symbol Types */ enum stabs_types { @@ -94,11 +116,15 @@ enum stabs_types { * The stabs handle. */ typedef struct stabs_handle { - dbg_handle base; /**< the base class */ - FILE *f; /**< the file write to */ - entity *cur_ent; /**< current method entity */ - unsigned next_type_nr; /**< next type number */ - pmap *type_map; /**< a map from type to type number */ + 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; /** @@ -106,34 +132,36 @@ typedef struct stabs_handle { */ 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); - return entry ? PTR_TO_INT(entry->value) : 0; + 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 */ /** - * Assign a stabs type number to a Firm type. + * Map a given Type to void by assigned the type number 0. */ -static unsigned assign_type_number(stabs_handle *h, ir_type *tp) { - unsigned num; - if (tp == NULL) { - /* map to the void type */ - return 0; - } - num = h->next_type_nr++; - pmap_insert(h->type_map, tp, INT_TO_PTR(num)); - return num; -} /* assign_type_number */ +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) { - fprintf(h->f, "\t.stabs \"void:t%u=%u\",%d,0,0,0\n", 0, 0, N_LSYM); + (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 { @@ -145,7 +173,7 @@ typedef struct walker_env { #define SET_TYPE_NOT_READY(wq, tp) \ do { \ set_type_link(tp, (void *)1); \ - waitq_put(wq, tp); \ + waitq_put(wq, tp); \ } while(0) /* a the is ready */ @@ -160,20 +188,42 @@ typedef struct walker_env { #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); +} + /** * Generates a primitive type. * * @param h the stabs handle * @param tp the type */ -static void gen_primitive_type(stabs_handle *h, ir_type *tp) -{ +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) { - /* jack and FirmJC compiler use mode_T for the void type. + /* 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 */ @@ -182,18 +232,19 @@ static void gen_primitive_type(stabs_handle *h, ir_type *tp) return; } /* if */ - type_num = assign_type_number(h, tp); + type_num = get_type_number(h, tp); if (mode_is_int(mode)) { - char buf[64]; - fprintf(h->f, "\t.stabs \"%s:t%u=r%u;", get_type_name(tp), type_num, type_num); - tarval_snprintf(buf, sizeof(buf), get_mode_min(mode)); - fprintf(h->f, "%s;", buf); - tarval_snprintf(buf, sizeof(buf), get_mode_max(mode)); - fprintf(h->f, "%s;\",%d,0,0,0\n", buf, N_LSYM); + 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); - fprintf(h->f, "\t.stabs \"%s:t%u=r1;%d;0;\",%d,0,0,0\n", get_type_name(tp), type_num, size, N_LSYM); + 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 */ @@ -204,45 +255,119 @@ static void gen_primitive_type(stabs_handle *h, ir_type *tp) * @param tp the type */ static void gen_enum_type(stabs_handle *h, ir_type *tp) { - unsigned type_num = assign_type_number(h, tp); + unsigned type_num = get_type_number(h, tp); int i, n; - fprintf(h->f, "\t.stabs \"%s:T%u=e", get_type_name(tp), type_num); + 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)); - fprintf(h->f, "%s:%s,", get_enumeration_name(ec), buf); + be_emit_irprintf("%s:%s,", get_enumeration_name(ec), buf); } - fprintf(h->f, ";\",%d,0,0,0\n", N_LSYM); + 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 h the stabs handle + * @param env the walker environment * @param tp the type */ -static void gen_pointer_type(stabs_handle *h, ir_type *tp) { - unsigned type_num = assign_type_number(h, tp); - unsigned el_num = get_type_number(h, get_pointer_points_to_type(tp)); - - fprintf(h->f, "\t.stabs \"%s:T%u=*%u\",%d,0,0,0\n", - get_type_name(tp), type_num, el_num, N_LSYM); +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 h the stabs handle + * @param env the walker environment * @param tp the type */ -static void gen_struct_union_type(stabs_handle *h, ir_type *tp) { - unsigned type_num = assign_type_number(h, tp); - int i, n; - char desc; +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) { @@ -250,60 +375,107 @@ static void gen_struct_union_type(stabs_handle *h, ir_type *tp) { return; } } - else + else if (is_Union_type(tp)) desc = 'u'; - fprintf(h->f, "\t.stabs \"%s:T%u=%c%d", + 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) { - entity *ent = get_compound_member(tp, i); - ir_type *mtp = get_entity_type(ent); - int ofs, size; - - ofs = get_entity_offset_bits(ent); + 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) { - entity *ent = get_struct_member(mtp, 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_bits(tp); - bofs = ofs + get_entity_offset_bits(ent); + 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. */ - fprintf(h->f, "%s:%u,%d,%d;", get_entity_name(ent), type_num, bofs, size); + be_emit_irprintf("%s:%u,%d,%u;", get_entity_name(ent), type_num, bofs, size); } } else { /* no bitfield */ - type_num = get_type_number(h, mtp); - size = get_type_size_bits(mtp); + be_emit_irprintf("%s:", get_entity_name(ent)); - /* name:type, bit offset from the start of the struct', number of bits in the element. */ - fprintf(h->f, "%s:%u,%d,%d;", get_entity_name(ent), type_num, ofs, size); + 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); } } - fprintf(h->f, ";\",%d,0,0,0\n", N_LSYM); + 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) +static void walk_type(type_or_ent tore, void *ctx) { wenv_t *env = ctx; - FILE *f = env->h->f; - entity *ent; ir_type *tp; - ir_graph *irg; - if (get_kind(tore) == k_type) { - tp = (ir_type *)tore; + if (is_type(tore.typ)) { + tp = tore.typ; /* ignore the unknown type */ if (tp == firm_unknown_type) @@ -321,31 +493,32 @@ static void walk_type(type_or_ent *tore, void *ctx) /* fall through */ case tpo_struct: case tpo_union: - SET_TYPE_NOT_READY(env->wq, tp); + gen_struct_union_type(env, tp); break; case tpo_enumeration: gen_enum_type(env->h, tp); - SET_TYPE_READY(tp); break; case tpo_primitive: gen_primitive_type(env->h, tp); - SET_TYPE_READY(tp); break; case tpo_method: + gen_method_type(env, tp); + break; + case tpo_array: - SET_TYPE_NOT_READY(env->wq, tp); + gen_array_type(env, tp); break; case tpo_pointer: - /* must construct the pointer type */ - SET_TYPE_NOT_READY(env->wq, tp); + gen_pointer_type(env, tp); break; case tpo_unknown: /* the unknown type: ignore */ + SET_TYPE_READY(tp); break; default: assert(! "Unknown tpop code"); @@ -353,99 +526,47 @@ static void walk_type(type_or_ent *tore, void *ctx) } /* walk_type */ /** - * check, if a method type can be generated - */ -static int is_method_type_ready(ir_type *tp) -{ - int i; - ir_type *etp; - - for (i = get_method_n_ress(tp) - 1; i >= 0; --i) { - etp = SKIP_PTR(get_method_res_type(tp, i)); - - if (! IS_TYPE_READY(etp) && (! is_compound_type(etp) || is_Array_type(etp))) - return 0; - } /* for */ - - for (i = get_method_n_params(tp) - 1; i >= 0; --i) { - etp = SKIP_PTR(get_method_param_type(tp, i)); - - if (! IS_TYPE_READY(etp) && (! is_compound_type(etp) || is_Array_type(etp))) - return 0; - } /* for */ - return 1; -} /* is_method_type_ready */ - -/** - * check, whether a compound type can be generated + * generate declaration for all types */ -static int is_compound_type_ready(ir_type *tp) +static void finish_types(wenv_t *env) { - int i; - ir_type *etp; - - for (i = get_compound_n_members(tp) - 1; i >= 0; --i) { - etp = SKIP_PTR(get_entity_type(get_compound_member(tp, i))); + waitq *wq = env->wq; + ir_type *tp; - if (! IS_TYPE_READY(etp) && (! is_compound_type(etp) || is_Array_type(etp))) - return 0; - } /* for */ - return 1; -} /* is_compound_type_ready */ + while (! waitq_empty(wq)) { + tp = waitq_get(wq); + if (IS_TYPE_READY(tp)) + continue; -/** - * generate declaration for all types - */ -static void finish_types(stabs_handle *h, waitq *wq) -{ - ir_type *tp; - - while (! waitq_empty(wq)) { - tp = waitq_get(wq); - - switch (get_type_tpop_code(tp)) { - case tpo_method: - if (is_method_type_ready(tp)) { - if (get_method_n_ress(tp) <= 1) - //gen_method_type(h, tp) - ; - else { - fprintf(stderr, "Warning: Cannot create stabs debug info for type %s\n", get_type_name(tp)); - } /* if */ - SET_TYPE_READY(tp); - continue; - } /* if */ - break; - case tpo_class: - case tpo_union: - case tpo_struct: - if (is_compound_type_ready(tp)) { - gen_struct_union_type(h, tp); - SET_TYPE_READY(tp); - continue; - } /* if */ - break; - case tpo_array: - if (IS_TYPE_READY(get_array_element_type(tp))) { - //gen_array_type(h, tp); - SET_TYPE_READY(tp); - continue; - } /* if */ - break; - case tpo_pointer: - if (IS_TYPE_READY(get_pointer_points_to_type(tp))) { - gen_pointer_type(h, tp); - SET_TYPE_READY(tp); - continue; - } /* if */ - break; - default: - assert(! "Unknown tpop code"); - } /* switch */ - - /* still not ready, defer type output */ - pdeq_putr(wq, tp); - } /* while */ + 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 */ /** @@ -457,7 +578,7 @@ static void gen_types(stabs_handle *h) { env.h = h; env.wq = new_waitq(); type_walk(NULL, walk_type, &env); - finish_types(h, env.wq); + finish_types(&env); del_waitq(env.wq); } /* gen_types */ @@ -469,39 +590,69 @@ static void gen_types(stabs_handle *h) { */ static void stabs_so(dbg_handle *handle, const char *filename) { stabs_handle *h = (stabs_handle *)handle; - fprintf(h->f, "\t.stabs \"%s\",%d,0,0,.Ltext0\n", filename, N_SO); + 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) { - stabs_handle *h = (stabs_handle *)handle; ir_graph *irg = get_irp_main_irg(); + + (void) handle; if (irg) { - fprintf(h->f, "\t.stabs \"%s\",%d,0,0,0\n", get_entity_name(get_irg_entity(irg)), N_MAIN); + 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 */ -/** - * prints a line number - */ -static void stabs_line(dbg_handle *handle, unsigned lineno, const char *address) { - 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 */ +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(); + } +} /** - * dump 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 *mtp, *rtp; - unsigned type_num; - int i, n; + ir_type *mtp, *rtp; + unsigned type_num; + int i, n, between_size; h->cur_ent = ent; + h->layout = layout; + /* create the method entry */ mtp = get_entity_type(ent); if (is_lowered_type(mtp)) mtp = get_associated_type(mtp); @@ -510,28 +661,99 @@ static void stabs_method(dbg_handle *handle, entity *ent) { else rtp = NULL; type_num = get_type_number(h, rtp); - fprintf(h->f, "\t.stabs \"%s:%c%u\",%u,0,0,%s\n", + 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)); + 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; } - /* FIXME: calculate the offset */ - fprintf(h->f, "\t.stabs \"%s:p%u\",%d,0,0,%d\n", name, type_num, N_PSYM, ofs); + /* 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(); } -} /* stabs_method */ + /* 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 @@ -546,20 +768,32 @@ static void stabs_types(dbg_handle *handle) { } /* stabs_types */ /** - * dump a global + * dump a variable in the global type */ -static void stabs_global(dbg_handle *handle, struct obstack *obst, entity *ent) { +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 (obst) { - obstack_printf(obst, "\t.stabs \"%s:G%u\",%d,0,0,0\n", - get_entity_name(ent), tp_num, N_GSYM); - } else { - fprintf(h->f, "\t.stabs \"%s:G%u\",%d,0,0,0\n", + 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)); } -} /* stabs_global */ + buf[sizeof(buf) - 1] = '\0'; + + be_emit_string(buf); +} /* stabs_variable */ /** * Close the stabs handler. @@ -575,66 +809,31 @@ static const debug_ops stabs_ops = { stabs_close, stabs_so, stabs_main_program, - stabs_method, - stabs_line, + stabs_method_begin, + stabs_method_end, stabs_types, - stabs_global + stabs_variable, + stabs_set_dbg_info }; /* Opens a stabs handler */ -dbg_handle *be_stabs_open(FILE *out) { +dbg_handle *be_stabs_open(void) { stabs_handle *h = xmalloc(sizeof(*h)); h->base.ops = &stabs_ops; - h->f = out; h->cur_ent = NULL; + h->layout = NULL; h->next_type_nr = 0; h->type_map = pmap_create_ex(64); - return &h->base; -} /* stabs_open */ + 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 */ + return &h->base; +} -/** - * start a new source object (compilation unit) - */ -void be_dbg_so(dbg_handle *h, const char *filename) { - if (h->ops->so) - h->ops->so(h, filename); -} /* be_dbg_begin */ +void be_init_stabs(void) +{ + be_register_dbgout_module("stabs", be_stabs_open); +} -/** - * Main program - */ -void be_dbg_main_program(dbg_handle *h) { - if (h->ops->main_program) - h->ops->main_program(h); -} /* be_dbg_main_program */ - -/** 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 */ - -/** 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 */ - -/** dump types */ -void be_dbg_types(dbg_handle *h) { - if (h->ops->types) - h->ops->types(h); -} /* be_dbg_types */ - -/** dump a global */ -void be_dbg_global(dbg_handle *h, struct obstack *obst, entity *ent) { - if (h->ops->global) - h->ops->global(h, obst, ent); -} /* be_dbg_global */ +BE_REGISTER_MODULE_CONSTRUCTOR(be_init_stabs);