X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbestabs.c;h=a636a27e63221fb834097b40a707c15d29b27970;hb=89dc24503c04139bb05504059b291d6d89f99661;hp=686129e3a6d4325b96890c45205cb4d5e174a309;hpb=1fa6131fa3e4b3593019b001976af0f3cc529ac5;p=libfirm diff --git a/ir/be/bestabs.c b/ir/be/bestabs.c index 686129e3a..a636a27e6 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. + * + * Licensees holding valid libFirm Professional Edition licenses may use + * this file in accordance with the libFirm Commercial License. + * Agreement provided with the Software. * - * @author Michael Beck - * @date 11.9.2006 - * @cvsid $Id$ + * 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 +32,18 @@ #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 "array.h" #include "be_dbgout.h" +#include "beabi.h" /* Non-Stab Symbol and Stab Symbol Types */ enum stabs_types { @@ -94,11 +113,14 @@ 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 */ + FILE *f; /**< the file write to */ + 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 */ } stabs_handle; /** @@ -106,34 +128,34 @@ 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); + fprintf(h->f, "\t.stabs\t\"void:t%u=%u\",%d,0,0,0\n", 0, 0, N_LSYM); } /* gen_void_type */ typedef struct walker_env { @@ -145,7 +167,7 @@ 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 */ @@ -166,14 +188,15 @@ typedef struct walker_env { * @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 +205,18 @@ 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); + fprintf(h->f, "\t.stabs\t\"%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); } 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); + fprintf(h->f, "\t.stabs\t\"%s:t%u=r1;%d;0;\",%d,0,0,0\n", get_type_name(tp), type_num, size, N_LSYM); } } /* gen_primitive_type */ @@ -204,10 +227,11 @@ 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); + fprintf(h->f, "\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]; @@ -218,31 +242,101 @@ static void gen_enum_type(stabs_handle *h, ir_type *tp) { fprintf(h->f, ";\",%d,0,0,0\n", N_LSYM); } /* 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); + + fprintf(h->f, "%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)); +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); - fprintf(h->f, "\t.stabs \"%s:T%u=*%u\",%d,0,0,0\n", - get_type_name(tp), type_num, el_num, N_LSYM); + fprintf(h->f, "\t.stabs\t\"%s:t", get_type_name(tp)); + print_pointer_type(h, tp, 0); + fprintf(h->f, "\",%d,0,0,0\n", N_LSYM); } /* 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; + + fprintf(h->f, "%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 */ + fprintf(h->f, "r1;%ld;%ld;", min, max-1); + } + } + + type_num = get_type_number(h, etp); + fprintf(h->f, "%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); + + fprintf(h->f, "\t.stabs\t\"%s:t", get_type_name(tp)); + + print_array_type(h, tp, 0); + + fprintf(h->f, "\",%d,0,0,0\n", N_LSYM); +} /* 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) { @@ -250,46 +344,94 @@ 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", + fprintf(h->f, "\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); + fprintf(h->f, "%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); + fprintf(h->f, "%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. */ + fprintf(h->f, "%u", type_num); + } + size = get_type_size_bytes(mtp) * 8; + fprintf(h->f, ",%d,%u;", ofs * 8, size); } } fprintf(h->f, ";\",%d,0,0,0\n", N_LSYM); } /* 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); + + fprintf(h->f, "\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); + fprintf(h->f, ",%u", res_type_num); + } + fprintf(h->f, "\",%d,0,0,0\n", N_LSYM); +} /* gen_method_type */ + /** * type-walker: generate declaration for simple types, * put all other types on a wait queue @@ -297,10 +439,7 @@ static void gen_struct_union_type(stabs_handle *h, ir_type *tp) { 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; @@ -321,31 +460,32 @@ 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 +493,47 @@ 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 +545,7 @@ 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 */ @@ -469,9 +557,29 @@ 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; + fprintf(h->f, "\t.stabs\t\"%s\",%d,0,0,.Ltext0\n", filename, N_SO); } /* stabs_so */ +/** + * end an include file + */ +static void stabs_include_end(dbg_handle *handle) { + stabs_handle *h = (stabs_handle *)handle; + h->curr_file = h->main_file; +} /* stabs_include_end */ + +/** + * start an include file + */ +static void stabs_include_begin(dbg_handle *handle, const char *filename) { + stabs_handle *h = (stabs_handle *)handle; + if (h->main_file != h->curr_file) + stabs_include_end(handle); + h->curr_file = filename; + fprintf(h->f, "\t.stabs\t\"%s\",%d,0,0,0\n", filename, N_SOL); +} /* stabs_include_begin */ + /** * Main Program */ @@ -479,7 +587,7 @@ static void stabs_main_program(dbg_handle *handle) { stabs_handle *h = (stabs_handle *)handle; ir_graph *irg = get_irp_main_irg(); if (irg) { - fprintf(h->f, "\t.stabs \"%s\",%d,0,0,0\n", get_entity_name(get_irg_entity(irg)), N_MAIN); + fprintf(h->f, "\t.stabs\t\"%s\",%d,0,0,0\n", get_entity_name(get_irg_entity(irg)), N_MAIN); } } /* stabs_main_program */ @@ -488,20 +596,22 @@ static void stabs_main_program(dbg_handle *handle) { */ 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)); + fprintf(h->f, "\t.stabn\t%d, 0, %u, %s-%s\n", N_SLINE, lineno, address, get_entity_ld_name(h->cur_ent)); } /* stabs_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 +620,93 @@ 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", + fprintf(h->f, "\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)); + /* 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; + } + fprintf(h->f, "\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. */ + fprintf(h->f, "%u", type_num); + } + + fprintf(h->f, "\",%d,0,0,%d\n", N_PSYM, ofs); + } +} /* 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); + + fprintf(h->f, "\t.stabs\t\"%s:%u\",%d,0,0,%d\n", + get_entity_name(ent), type_num, N_LSYM, ofs); } -} /* stabs_method */ + /* we need a lexical block here */ + fprintf(h->f, "\t.stabn\t%d,0,0,%s-%s\n", N_LBRAC, ld_name, ld_name); + fprintf(h->f, "\t.stabn\t%d,0,0,.Lscope%u-%s\n", N_RBRAC, scope_nr, ld_name); + fprintf(h->f, ".Lscope%u:\n", scope_nr); + ++scope_nr; + + h->cur_ent = NULL; + h->layout = NULL; +} /* stabs_method_end */ /** * dump types @@ -546,20 +721,35 @@ 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, struct obstack *obst, 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'; + + if (obst) + obstack_printf(obst, "%s", buf); + else + fprintf(h->f, "%s", buf); +} /* stabs_variable */ /** * Close the stabs handler. @@ -574,13 +764,21 @@ static void stabs_close(dbg_handle *handle) { static const debug_ops stabs_ops = { stabs_close, stabs_so, + stabs_include_begin, + stabs_include_end, stabs_main_program, - stabs_method, + stabs_method_begin, + stabs_method_end, stabs_line, stabs_types, - stabs_global + stabs_variable }; +/* Opens the NULL handler */ +dbg_handle *be_nulldbg_open(void) { + return NULL; +} /* be_nulldbg_open */ + /* Opens a stabs handler */ dbg_handle *be_stabs_open(FILE *out) { stabs_handle *h = xmalloc(sizeof(*h)); @@ -588,14 +786,18 @@ dbg_handle *be_stabs_open(FILE *out) { 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); + h->main_file = NULL; + h->curr_file = NULL; + return &h->base; } /* stabs_open */ /** close a debug handler. */ void be_dbg_close(dbg_handle *h) { - if (h->ops->close) + if (h && h->ops->close) h->ops->close(h); } /* be_dbg_close */ @@ -603,38 +805,60 @@ void be_dbg_close(dbg_handle *h) { * start a new source object (compilation unit) */ void be_dbg_so(dbg_handle *h, const char *filename) { - if (h->ops->so) + if (h && h->ops->so) h->ops->so(h, filename); } /* be_dbg_begin */ +/** + * start an include file + */ +void be_dbg_include_begin(dbg_handle *h, const char *filename) { + if (h && h->ops->include_begin) + h->ops->include_begin(h, filename); +} /* stabs_include_begin */ + +/** + * end an include file + */ +void be_dbg_include_end(dbg_handle *h) { + if (h && h->ops->include_end) + h->ops->include_end(h); +} /* stabs_include_end */ + /** * Main program */ void be_dbg_main_program(dbg_handle *h) { - if (h->ops->main_program) + if (h && 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 a method begin */ +void be_dbg_method_begin(dbg_handle *h, ir_entity *ent, const be_stack_layout_t *layout) { + if (h && h->ops->method_begin) + h->ops->method_begin(h, ent, layout); +} /* be_dbg_method_begin */ + +/** debug for a method end */ +void be_dbg_method_end(dbg_handle *h) { + if (h && h->ops->method_end) + h->ops->method_end(h); +} /* be_dbg_method_end */ /** debug for line number */ void be_dbg_line(dbg_handle *h, unsigned lineno, const char *address) { - if (h->ops->line) + if (h && 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) + if (h && 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 */ +void be_dbg_variable(dbg_handle *h, struct obstack *obst, ir_entity *ent) { + if (h && h->ops->variable) + h->ops->variable(h, obst, ent); +} /* be_dbg_variable */