[ac7d5ef0] | 1 | /* |
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[b06e68ef] | 2 | * @(#)symbols.c 1.10 - 95/08/02 |
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[ac7d5ef0] | 3 | * |
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[b06e68ef] | 4 | * $Id$ |
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[ac7d5ef0] | 5 | */ |
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| 6 | |
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| 7 | /* #define qsort _quicksort */ |
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| 8 | |
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| 9 | /* |
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| 10 | * File: symbols.c |
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| 11 | * |
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| 12 | * Description: |
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| 13 | * Symbol table manager for the RTEMS monitor. |
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| 14 | * These routines may be used by other system resources also. |
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| 15 | * |
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| 16 | * |
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| 17 | * TODO: |
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| 18 | */ |
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| 19 | |
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[637df35] | 20 | #include <rtems.h> |
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[ac7d5ef0] | 21 | #include <stdio.h> |
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| 22 | #include <stdlib.h> |
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| 23 | #include <string.h> |
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| 24 | |
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[b06e68ef] | 25 | #include "monitor.h" |
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[ac7d5ef0] | 26 | #include "symbols.h" |
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| 27 | |
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| 28 | |
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| 29 | rtems_symbol_table_t * |
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| 30 | rtems_symbol_table_create() |
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| 31 | { |
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| 32 | rtems_symbol_table_t *table; |
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| 33 | |
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| 34 | table = (rtems_symbol_table_t *) malloc(sizeof(rtems_symbol_table_t)); |
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| 35 | memset((void *) table, 0, sizeof(*table)); |
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| 36 | |
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| 37 | table->growth_factor = 30; /* 30 percent */ |
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| 38 | |
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| 39 | return table; |
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| 40 | } |
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| 41 | |
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| 42 | void |
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| 43 | rtems_symbol_table_destroy(rtems_symbol_table_t *table) |
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| 44 | { |
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| 45 | rtems_symbol_string_block_t *p, *pnext; |
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| 46 | |
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| 47 | if (table) |
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| 48 | { |
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| 49 | if (table->addresses) |
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| 50 | (void) free(table->addresses); |
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| 51 | table->addresses = 0; |
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| 52 | |
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| 53 | if (table->symbols) |
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| 54 | (void) free(table->symbols); |
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| 55 | table->symbols = 0; |
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| 56 | |
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| 57 | p = table->string_buffer_head; |
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| 58 | while (p) |
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| 59 | { |
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| 60 | pnext = p->next; |
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| 61 | free(p); |
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| 62 | p = pnext; |
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| 63 | } |
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| 64 | table->string_buffer_head = 0; |
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| 65 | table->string_buffer_current = 0; |
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| 66 | |
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| 67 | free(table); |
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| 68 | } |
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| 69 | } |
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| 70 | |
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| 71 | rtems_symbol_t * |
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| 72 | rtems_symbol_create( |
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| 73 | rtems_symbol_table_t *table, |
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| 74 | char *name, |
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| 75 | rtems_unsigned32 value |
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| 76 | ) |
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| 77 | { |
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| 78 | int symbol_length; |
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| 79 | size_t newsize; |
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| 80 | rtems_symbol_t *sp; |
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| 81 | |
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| 82 | symbol_length = strlen(name) + 1; /* include '\000' in length */ |
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| 83 | |
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| 84 | /* need to grow the table? */ |
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| 85 | if (table->next >= table->size) |
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| 86 | { |
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| 87 | if (table->size == 0) |
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| 88 | newsize = 100; |
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| 89 | else |
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| 90 | newsize = table->size + (table->size / (100 / table->growth_factor)); |
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| 91 | |
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| 92 | table->addresses = (rtems_symbol_t *) realloc((void *) table->addresses, newsize * sizeof(rtems_symbol_t)); |
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| 93 | if (table->addresses == 0) /* blew it; lost orig */ |
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| 94 | goto failed; |
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| 95 | |
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| 96 | table->symbols = (rtems_symbol_t *) realloc((void *) table->symbols, newsize * sizeof(rtems_symbol_t)); |
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| 97 | if (table->symbols == 0) /* blew it; lost orig */ |
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| 98 | goto failed; |
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| 99 | |
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| 100 | table->size = newsize; |
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| 101 | } |
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| 102 | |
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| 103 | sp = &table->addresses[table->next]; |
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| 104 | sp->value = value; |
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| 105 | |
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| 106 | /* Have to add it to string pool */ |
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| 107 | /* need to grow pool? */ |
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| 108 | |
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| 109 | if ((table->string_buffer_head == 0) || |
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| 110 | (table->strings_next + symbol_length) >= SYMBOL_STRING_BLOCK_SIZE) |
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| 111 | { |
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| 112 | rtems_symbol_string_block_t *p; |
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| 113 | |
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| 114 | p = (rtems_symbol_string_block_t *) malloc(sizeof(rtems_symbol_string_block_t)); |
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| 115 | if (p == 0) |
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| 116 | goto failed; |
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| 117 | p->next = 0; |
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| 118 | if (table->string_buffer_head == 0) |
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| 119 | table->string_buffer_head = p; |
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| 120 | else |
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| 121 | table->string_buffer_current->next = p; |
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| 122 | table->string_buffer_current = p; |
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| 123 | |
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| 124 | table->strings_next = 0; |
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| 125 | } |
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| 126 | |
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| 127 | sp->name = table->string_buffer_current->buffer + table->strings_next; |
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| 128 | (void) strcpy(sp->name, name); |
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| 129 | |
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| 130 | table->strings_next += symbol_length; |
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| 131 | |
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| 132 | table->symbols[table->next] = *sp; |
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| 133 | |
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| 134 | table->sorted = 0; |
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| 135 | table->next++; |
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| 136 | |
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| 137 | return sp; |
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| 138 | |
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| 139 | /* XXX Not sure what to do here. We've possibly destroyed the initial |
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| 140 | symbol table due to realloc failure */ |
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| 141 | failed: |
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| 142 | return 0; |
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| 143 | } |
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| 144 | |
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| 145 | /* |
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| 146 | * Qsort entry point for compare by address |
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| 147 | */ |
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| 148 | |
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| 149 | int |
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| 150 | rtems_symbol_compare(const void *e1, |
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| 151 | const void *e2) |
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| 152 | { |
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| 153 | rtems_symbol_t *s1, *s2; |
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| 154 | s1 = (rtems_symbol_t *) e1; |
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| 155 | s2 = (rtems_symbol_t *) e2; |
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| 156 | |
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| 157 | if (s1->value < s2->value) |
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| 158 | return -1; |
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| 159 | if (s1->value > s2->value) |
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| 160 | return 1; |
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| 161 | return 0; |
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| 162 | } |
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| 163 | |
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| 164 | /* |
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| 165 | * Qsort entry point for compare by string name (case independent) |
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| 166 | */ |
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| 167 | |
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| 168 | int |
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| 169 | rtems_symbol_string_compare(const void *e1, |
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| 170 | const void *e2) |
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| 171 | { |
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| 172 | rtems_symbol_t *s1, *s2; |
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| 173 | s1 = (rtems_symbol_t *) e1; |
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| 174 | s2 = (rtems_symbol_t *) e2; |
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| 175 | |
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| 176 | return strcasecmp(s1->name, s2->name); |
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| 177 | } |
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| 178 | |
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| 179 | |
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| 180 | /* |
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| 181 | * Sort the symbol table using qsort |
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| 182 | */ |
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| 183 | |
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| 184 | void |
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| 185 | rtems_symbol_sort(rtems_symbol_table_t *table) |
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| 186 | { |
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[11290355] | 187 | #ifdef RTEMS_ON_SIMULATOR |
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[ac7d5ef0] | 188 | printf("Sorting symbols ... "); /* so slow we need a msg */ |
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| 189 | fflush(stdout); |
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| 190 | #endif |
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| 191 | |
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| 192 | qsort((void *) table->addresses, (size_t) table->next, |
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| 193 | sizeof(rtems_symbol_t), rtems_symbol_compare); |
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| 194 | |
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| 195 | qsort((void *) table->symbols, (size_t) table->next, |
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| 196 | sizeof(rtems_symbol_t), rtems_symbol_string_compare); |
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| 197 | |
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[11290355] | 198 | #ifdef RTEMS_ON_SIMULATOR |
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[ac7d5ef0] | 199 | /* so slow we need a msg */ |
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| 200 | printf("done\n"); |
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| 201 | #endif |
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| 202 | |
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| 203 | table->sorted = 1; |
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| 204 | } |
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| 205 | |
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| 206 | /* |
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| 207 | * Search the symbol table by address |
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| 208 | * This code based on CYGNUS newlib bsearch, but changed |
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| 209 | * to allow for finding closest symbol <= key |
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| 210 | */ |
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| 211 | |
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| 212 | rtems_symbol_t * |
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| 213 | rtems_symbol_value_lookup( |
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| 214 | rtems_symbol_table_t *table, |
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| 215 | rtems_unsigned32 value |
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| 216 | ) |
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| 217 | { |
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| 218 | rtems_symbol_t *sp; |
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| 219 | rtems_symbol_t *base; |
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| 220 | rtems_symbol_t *best = 0; |
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| 221 | rtems_unsigned32 distance; |
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| 222 | rtems_unsigned32 best_distance = ~0; |
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| 223 | rtems_unsigned32 elements; |
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| 224 | |
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[b06e68ef] | 225 | if (table == 0) |
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| 226 | table = rtems_monitor_symbols; |
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| 227 | |
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[ac7d5ef0] | 228 | if ((table == 0) || (table->size == 0)) |
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| 229 | return 0; |
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| 230 | |
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| 231 | if (table->sorted == 0) |
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| 232 | rtems_symbol_sort(table); |
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| 233 | |
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| 234 | base = table->addresses; |
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| 235 | elements = table->next; |
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| 236 | |
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| 237 | while (elements) |
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| 238 | { |
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| 239 | sp = base + (elements / 2); |
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| 240 | if (value < sp->value) |
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| 241 | elements /= 2; |
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| 242 | else if (value > sp->value) |
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| 243 | { |
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| 244 | distance = value - sp->value; |
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| 245 | if (distance < best_distance) |
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| 246 | { |
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| 247 | best_distance = distance; |
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| 248 | best = sp; |
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| 249 | } |
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| 250 | base = sp + 1; |
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| 251 | elements = (elements / 2) - (elements % 2 ? 0 : 1); |
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| 252 | } |
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| 253 | else |
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| 254 | return sp; |
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| 255 | } |
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| 256 | |
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| 257 | if (value == base->value) |
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| 258 | return base; |
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| 259 | |
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| 260 | return best; |
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| 261 | } |
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| 262 | |
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| 263 | /* |
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| 264 | * Search the symbol table by string name (case independent) |
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| 265 | */ |
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| 266 | |
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| 267 | rtems_symbol_t * |
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| 268 | rtems_symbol_name_lookup( |
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| 269 | rtems_symbol_table_t *table, |
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| 270 | char *name |
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| 271 | ) |
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| 272 | { |
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| 273 | rtems_symbol_t *sp = 0; |
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| 274 | rtems_symbol_t key; |
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| 275 | |
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[b06e68ef] | 276 | if (table == 0) |
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| 277 | table = rtems_monitor_symbols; |
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| 278 | |
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[ac7d5ef0] | 279 | if ((table == 0) || (name == 0)) |
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| 280 | goto done; |
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| 281 | |
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| 282 | if (table->sorted == 0) |
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| 283 | rtems_symbol_sort(table); |
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| 284 | |
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| 285 | /* |
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| 286 | * dummy up one for bsearch() |
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| 287 | */ |
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| 288 | |
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| 289 | key.name = name; |
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| 290 | key.value = 0; |
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| 291 | |
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| 292 | sp = (rtems_symbol_t *) bsearch((const void *) &key, |
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| 293 | (const void *) table->symbols, |
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| 294 | (size_t) table->next, |
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| 295 | sizeof(rtems_symbol_t), |
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| 296 | rtems_symbol_string_compare); |
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| 297 | |
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| 298 | done: |
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| 299 | return sp; |
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| 300 | } |
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| 301 | |
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[b06e68ef] | 302 | void * |
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| 303 | rtems_monitor_symbol_next( |
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| 304 | void *object_info, |
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| 305 | rtems_monitor_symbol_t *canonical, |
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| 306 | rtems_id *next_id |
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| 307 | ) |
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| 308 | { |
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| 309 | rtems_symbol_table_t *table; |
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| 310 | int n = rtems_get_index(*next_id); |
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| 311 | |
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| 312 | table = *(rtems_symbol_table_t **) object_info; |
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| 313 | if (table == 0) |
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| 314 | goto failed; |
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| 315 | |
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| 316 | if (n >= table->next) |
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| 317 | goto failed; |
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| 318 | |
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| 319 | /* NOTE: symbols do not have id and name fields */ |
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| 320 | |
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| 321 | if (table->sorted == 0) |
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| 322 | rtems_symbol_sort(table); |
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| 323 | |
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| 324 | _Thread_Disable_dispatch(); |
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| 325 | |
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| 326 | *next_id += 1; |
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| 327 | return (void *) (table->symbols + n); |
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| 328 | |
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| 329 | failed: |
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| 330 | *next_id = RTEMS_OBJECT_ID_FINAL; |
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| 331 | return 0; |
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| 332 | } |
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| 333 | |
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| 334 | void |
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| 335 | rtems_monitor_symbol_canonical( |
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| 336 | rtems_monitor_symbol_t *canonical_symbol, |
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| 337 | rtems_symbol_t *sp |
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| 338 | ) |
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| 339 | { |
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| 340 | canonical_symbol->value = sp->value; |
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| 341 | canonical_symbol->offset = 0; |
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| 342 | strncpy(canonical_symbol->name, sp->name, sizeof(canonical_symbol->name)); |
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| 343 | } |
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| 344 | |
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| 345 | |
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| 346 | void |
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| 347 | rtems_monitor_symbol_canonical_by_name( |
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| 348 | rtems_monitor_symbol_t *canonical_symbol, |
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| 349 | char *name |
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| 350 | ) |
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| 351 | { |
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| 352 | rtems_symbol_t *sp; |
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| 353 | |
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| 354 | sp = rtems_symbol_name_lookup(0, name); |
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| 355 | |
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| 356 | canonical_symbol->value = sp ? sp->value : 0; |
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| 357 | |
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| 358 | strncpy(canonical_symbol->name, name, sizeof(canonical_symbol->name)); |
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| 359 | canonical_symbol->offset = 0; |
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| 360 | } |
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| 361 | |
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| 362 | void |
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| 363 | rtems_monitor_symbol_canonical_by_value( |
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| 364 | rtems_monitor_symbol_t *canonical_symbol, |
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| 365 | void *value_void_p |
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| 366 | ) |
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| 367 | { |
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| 368 | unsigned32 value = (unsigned32) value_void_p; |
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| 369 | rtems_symbol_t *sp; |
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| 370 | |
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| 371 | sp = rtems_symbol_value_lookup(0, value); |
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| 372 | if (sp) |
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| 373 | { |
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| 374 | canonical_symbol->value = sp->value; |
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| 375 | canonical_symbol->offset = value - sp->value; |
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| 376 | strncpy(canonical_symbol->name, sp->name, sizeof(canonical_symbol->name)); |
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| 377 | } |
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| 378 | else |
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| 379 | { |
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| 380 | canonical_symbol->value = value; |
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| 381 | canonical_symbol->offset = 0; |
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| 382 | canonical_symbol->name[0] = '\0'; |
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| 383 | } |
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| 384 | } |
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| 385 | |
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| 386 | |
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| 387 | unsigned32 |
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| 388 | rtems_monitor_symbol_dump( |
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| 389 | rtems_monitor_symbol_t *canonical_symbol, |
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| 390 | boolean verbose |
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| 391 | ) |
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| 392 | { |
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| 393 | unsigned32 length = 0; |
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| 394 | |
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| 395 | /* |
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| 396 | * print the name if it exists AND if value is non-zero |
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| 397 | * Ie: don't print some garbage symbol for address 0 |
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| 398 | */ |
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| 399 | |
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| 400 | if (canonical_symbol->name[0] && (canonical_symbol->value != 0)) |
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| 401 | { |
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| 402 | if (canonical_symbol->offset == 0) |
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| 403 | length += printf("%.*s", |
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[11290355] | 404 | (int) sizeof(canonical_symbol->name), |
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[b06e68ef] | 405 | canonical_symbol->name); |
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| 406 | else |
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| 407 | length += printf("<%.*s+0x%x>", |
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[11290355] | 408 | (int) sizeof(canonical_symbol->name), |
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[b06e68ef] | 409 | canonical_symbol->name, |
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| 410 | canonical_symbol->offset); |
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| 411 | if (verbose) |
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| 412 | length += printf(" [0x%x]", canonical_symbol->value); |
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| 413 | } |
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| 414 | else |
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| 415 | length += printf("[0x%x]", canonical_symbol->value); |
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| 416 | |
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| 417 | return length; |
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| 418 | } |
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| 419 | |
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| 420 | |
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| 421 | void |
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| 422 | rtems_monitor_symbol_dump_all( |
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| 423 | rtems_symbol_table_t *table, |
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| 424 | boolean verbose |
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| 425 | ) |
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| 426 | { |
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| 427 | int s; |
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| 428 | rtems_symbol_t *sp; |
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| 429 | |
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| 430 | if (table == 0) |
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| 431 | { |
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| 432 | table = rtems_monitor_symbols; |
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| 433 | if (table == 0) |
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| 434 | return; |
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| 435 | } |
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| 436 | |
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| 437 | if (table->sorted == 0) |
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| 438 | rtems_symbol_sort(table); |
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| 439 | |
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| 440 | for (s = 0, sp = table->symbols; s < table->next; s++, sp++) |
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| 441 | { |
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| 442 | rtems_monitor_symbol_t canonical_symbol; |
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| 443 | |
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| 444 | rtems_monitor_symbol_canonical(&canonical_symbol, sp); |
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| 445 | rtems_monitor_symbol_dump(&canonical_symbol, TRUE); |
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| 446 | printf("\n"); |
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| 447 | } |
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| 448 | } |
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| 449 | |
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| 450 | |
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| 451 | /* |
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| 452 | * 'symbol' command |
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| 453 | */ |
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| 454 | |
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| 455 | void |
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| 456 | rtems_monitor_symbol_cmd( |
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| 457 | int argc, |
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| 458 | char **argv, |
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| 459 | unsigned32 command_arg, |
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| 460 | boolean verbose |
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| 461 | ) |
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| 462 | { |
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| 463 | int arg; |
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| 464 | rtems_symbol_table_t *table; |
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| 465 | |
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| 466 | table = *(rtems_symbol_table_t **) command_arg; |
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| 467 | if (table == 0) |
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| 468 | { |
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| 469 | table = rtems_monitor_symbols; |
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| 470 | if (table == 0) |
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| 471 | return; |
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| 472 | } |
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| 473 | |
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| 474 | /* |
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| 475 | * Use object command to dump out whole symbol table |
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| 476 | */ |
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| 477 | if (argc == 1) |
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| 478 | rtems_monitor_symbol_dump_all(table, verbose); |
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| 479 | else |
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| 480 | { |
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| 481 | rtems_monitor_symbol_t canonical_symbol; |
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| 482 | |
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| 483 | for (arg=1; argv[arg]; arg++) |
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| 484 | { |
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| 485 | rtems_monitor_symbol_canonical_by_name(&canonical_symbol, argv[arg]); |
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| 486 | rtems_monitor_symbol_dump(&canonical_symbol, verbose); |
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| 487 | printf("\n"); |
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| 488 | } |
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| 489 | } |
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| 490 | } |
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