X-Git-Url: https://oss.titaniummirror.com/gitweb?p=msp430-binutils.git;a=blobdiff_plain;f=gold%2Ftestsuite%2Fplugin_test.c;fp=gold%2Ftestsuite%2Fplugin_test.c;h=2218d0841b1073370c42b77fa565b9db77d1dcbc;hp=0000000000000000000000000000000000000000;hb=88750007d7869f178f0ba528f41efd3b74c424cf;hpb=6df9443a374e2b81278c61b8afc0a1eef7db280b

diff --git a/gold/testsuite/plugin_test.c b/gold/testsuite/plugin_test.c
new file mode 100644
index 0000000..2218d08
--- /dev/null
+++ b/gold/testsuite/plugin_test.c
@@ -0,0 +1,529 @@
+/* test_plugin.c -- simple linker plugin test
+
+   Copyright 2008, 2009 Free Software Foundation, Inc.
+   Written by Cary Coutant <ccoutant@google.com>.
+
+   This file is part of gold.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+   MA 02110-1301, USA.  */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "plugin-api.h"
+
+struct claimed_file
+{
+  const char* name;
+  void* handle;
+  int nsyms;
+  struct ld_plugin_symbol* syms;
+  struct claimed_file* next;
+};
+
+struct sym_info
+{
+  int size;
+  char* type;
+  char* bind;
+  char* vis;
+  char* sect;
+  char* name;
+};
+
+static struct claimed_file* first_claimed_file = NULL;
+static struct claimed_file* last_claimed_file = NULL;
+
+static ld_plugin_register_claim_file register_claim_file_hook = NULL;
+static ld_plugin_register_all_symbols_read register_all_symbols_read_hook = NULL;
+static ld_plugin_register_cleanup register_cleanup_hook = NULL;
+static ld_plugin_add_symbols add_symbols = NULL;
+static ld_plugin_get_symbols get_symbols = NULL;
+static ld_plugin_add_input_file add_input_file = NULL;
+static ld_plugin_message message = NULL;
+static ld_plugin_get_input_file get_input_file = NULL;
+static ld_plugin_release_input_file release_input_file = NULL;
+
+#define MAXOPTS 10
+
+static const char *opts[MAXOPTS];
+static int nopts = 0;
+
+enum ld_plugin_status onload(struct ld_plugin_tv *tv);
+enum ld_plugin_status claim_file_hook(const struct ld_plugin_input_file *file,
+                                      int *claimed);
+enum ld_plugin_status all_symbols_read_hook(void);
+enum ld_plugin_status cleanup_hook(void);
+
+static void parse_readelf_line(char*, struct sym_info*);
+
+enum ld_plugin_status
+onload(struct ld_plugin_tv *tv)
+{
+  struct ld_plugin_tv *entry;
+  int api_version = 0;
+  int gold_version = 0;
+  int i;
+
+  for (entry = tv; entry->tv_tag != LDPT_NULL; ++entry)
+    {
+      switch (entry->tv_tag)
+        {
+        case LDPT_API_VERSION:
+          api_version = entry->tv_u.tv_val;
+          break;
+        case LDPT_GOLD_VERSION:
+          gold_version = entry->tv_u.tv_val;
+          break;
+        case LDPT_LINKER_OUTPUT:
+          break;
+        case LDPT_OPTION:
+          if (nopts < MAXOPTS)
+            opts[nopts++] = entry->tv_u.tv_string;
+          break;
+        case LDPT_REGISTER_CLAIM_FILE_HOOK:
+          register_claim_file_hook = entry->tv_u.tv_register_claim_file;
+          break;
+        case LDPT_REGISTER_ALL_SYMBOLS_READ_HOOK:
+          register_all_symbols_read_hook =
+            entry->tv_u.tv_register_all_symbols_read;
+          break;
+        case LDPT_REGISTER_CLEANUP_HOOK:
+          register_cleanup_hook = entry->tv_u.tv_register_cleanup;
+          break;
+        case LDPT_ADD_SYMBOLS:
+          add_symbols = entry->tv_u.tv_add_symbols;
+          break;
+        case LDPT_GET_SYMBOLS:
+          get_symbols = entry->tv_u.tv_get_symbols;
+          break;
+        case LDPT_ADD_INPUT_FILE:
+          add_input_file = entry->tv_u.tv_add_input_file;
+          break;
+        case LDPT_MESSAGE:
+          message = entry->tv_u.tv_message;
+          break;
+        case LDPT_GET_INPUT_FILE:
+          get_input_file = entry->tv_u.tv_get_input_file;
+          break;
+        case LDPT_RELEASE_INPUT_FILE:
+          release_input_file = entry->tv_u.tv_release_input_file;
+          break;
+        default:
+          break;
+        }
+    }
+
+  if (message == NULL)
+    {
+      fprintf(stderr, "tv_message interface missing\n");
+      return LDPS_ERR;
+    }
+
+  if (register_claim_file_hook == NULL)
+    {
+      fprintf(stderr, "tv_register_claim_file_hook interface missing\n");
+      return LDPS_ERR;
+    }
+
+  if (register_all_symbols_read_hook == NULL)
+    {
+      fprintf(stderr, "tv_register_all_symbols_read_hook interface missing\n");
+      return LDPS_ERR;
+    }
+
+  if (register_cleanup_hook == NULL)
+    {
+      fprintf(stderr, "tv_register_cleanup_hook interface missing\n");
+      return LDPS_ERR;
+    }
+
+  (*message)(LDPL_INFO, "API version:   %d", api_version);
+  (*message)(LDPL_INFO, "gold version:  %d", gold_version);
+
+  for (i = 0; i < nopts; ++i)
+    (*message)(LDPL_INFO, "option: %s", opts[i]);
+
+  if ((*register_claim_file_hook)(claim_file_hook) != LDPS_OK)
+    {
+      (*message)(LDPL_ERROR, "error registering claim file hook");
+      return LDPS_ERR;
+    }
+
+  if ((*register_all_symbols_read_hook)(all_symbols_read_hook) != LDPS_OK)
+    {
+      (*message)(LDPL_ERROR, "error registering all symbols read hook");
+      return LDPS_ERR;
+    }
+
+  if ((*register_cleanup_hook)(cleanup_hook) != LDPS_OK)
+    {
+      (*message)(LDPL_ERROR, "error registering cleanup hook");
+      return LDPS_ERR;
+    }
+
+  return LDPS_OK;
+}
+
+enum ld_plugin_status
+claim_file_hook (const struct ld_plugin_input_file* file, int* claimed)
+{
+  int len;
+  off_t end_offset;
+  char buf[160];
+  struct claimed_file* claimed_file;
+  struct ld_plugin_symbol* syms;
+  int nsyms = 0;
+  int maxsyms = 0;
+  FILE* irfile;
+  struct sym_info info;
+  int weak;
+  int def;
+  int vis;
+  int is_comdat;
+  int i;
+
+  (*message)(LDPL_INFO,
+             "%s: claim file hook called (offset = %ld, size = %ld)",
+             file->name, (long)file->offset, (long)file->filesize);
+
+  /* Look for the beginning of output from readelf -s.  */
+  irfile = fdopen(file->fd, "r");
+  (void)fseek(irfile, file->offset, SEEK_SET);
+  end_offset = file->offset + file->filesize;
+  len = fread(buf, 1, 13, irfile);
+  if (len < 13 || strncmp(buf, "\nSymbol table", 13) != 0)
+    return LDPS_OK;
+
+  /* Skip the two header lines.  */
+  (void) fgets(buf, sizeof(buf), irfile);
+  (void) fgets(buf, sizeof(buf), irfile);
+
+  if (add_symbols == NULL)
+    {
+      fprintf(stderr, "tv_add_symbols interface missing\n");
+      return LDPS_ERR;
+    }
+
+  /* Parse the output from readelf. The columns are:
+     Index Value Size Type Binding Visibility Section Name.  */
+  syms = (struct ld_plugin_symbol*)malloc(sizeof(struct ld_plugin_symbol) * 8);
+  if (syms == NULL)
+    return LDPS_ERR;
+  maxsyms = 8;
+  while (ftell(irfile) < end_offset
+         && fgets(buf, sizeof(buf), irfile) != NULL)
+    {
+      parse_readelf_line(buf, &info);
+
+      /* Ignore local symbols.  */
+      if (strncmp(info.bind, "LOCAL", 5) == 0)
+        continue;
+
+      weak = strncmp(info.bind, "WEAK", 4) == 0;
+      if (strncmp(info.sect, "UND", 3) == 0)
+        def = weak ? LDPK_WEAKUNDEF : LDPK_UNDEF;
+      else if (strncmp(info.sect, "COM", 3) == 0)
+        def = LDPK_COMMON;
+      else
+        def = weak ? LDPK_WEAKDEF : LDPK_DEF;
+
+      if (strncmp(info.vis, "INTERNAL", 8) == 0)
+        vis = LDPV_INTERNAL;
+      else if (strncmp(info.vis, "HIDDEN", 6) == 0)
+        vis = LDPV_HIDDEN;
+      else if (strncmp(info.vis, "PROTECTED", 9) == 0)
+        vis = LDPV_PROTECTED;
+      else
+        vis = LDPV_DEFAULT;
+
+      /* If the symbol is listed in the options list, special-case
+         it as a comdat symbol.  */
+      is_comdat = 0;
+      for (i = 0; i < nopts; ++i)
+        {
+          if (info.name != NULL && strcmp(info.name, opts[i]) == 0)
+            {
+              is_comdat = 1;
+              break;
+            }
+        }
+
+      if (nsyms >= maxsyms)
+        {
+          syms = (struct ld_plugin_symbol*)
+            realloc(syms, sizeof(struct ld_plugin_symbol) * maxsyms * 2);
+          if (syms == NULL)
+            return LDPS_ERR;
+          maxsyms *= 2;
+        }
+
+      if (info.name == NULL)
+        syms[nsyms].name = NULL;
+      else
+        {
+          len = strlen(info.name);
+          syms[nsyms].name = malloc(len + 1);
+          strncpy(syms[nsyms].name, info.name, len + 1);
+        }
+      syms[nsyms].version = NULL;
+      syms[nsyms].def = def;
+      syms[nsyms].visibility = vis;
+      syms[nsyms].size = info.size;
+      syms[nsyms].comdat_key = is_comdat ? syms[nsyms].name : NULL;
+      syms[nsyms].resolution = LDPR_UNKNOWN;
+      ++nsyms;
+    }
+
+  claimed_file = (struct claimed_file*) malloc(sizeof(struct claimed_file));
+  if (claimed_file == NULL)
+    return LDPS_ERR;
+
+  claimed_file->name = file->name;
+  claimed_file->handle = file->handle;
+  claimed_file->nsyms = nsyms;
+  claimed_file->syms = syms;
+  claimed_file->next = NULL;
+  if (last_claimed_file == NULL)
+    first_claimed_file = claimed_file;
+  else
+    last_claimed_file->next = claimed_file;
+  last_claimed_file = claimed_file;
+
+  (*message)(LDPL_INFO, "%s: claiming file, adding %d symbols",
+             file->name, nsyms);
+
+  if (nsyms > 0)
+    (*add_symbols)(file->handle, nsyms, syms);
+
+  *claimed = 1;
+  return LDPS_OK;
+}
+
+enum ld_plugin_status
+all_symbols_read_hook(void)
+{
+  int i;
+  const char* res;
+  struct claimed_file* claimed_file;
+  struct ld_plugin_input_file file;
+  FILE* irfile;
+  off_t end_offset;
+  struct sym_info info;
+  int len;
+  char buf[160];
+  char* p;
+  const char* filename;
+
+  (*message)(LDPL_INFO, "all symbols read hook called");
+
+  if (get_symbols == NULL)
+    {
+      fprintf(stderr, "tv_get_symbols interface missing\n");
+      return LDPS_ERR;
+    }
+
+  for (claimed_file = first_claimed_file;
+       claimed_file != NULL;
+       claimed_file = claimed_file->next)
+    {
+      (*get_symbols)(claimed_file->handle, claimed_file->nsyms,
+                     claimed_file->syms);
+
+      for (i = 0; i < claimed_file->nsyms; ++i)
+        {
+          switch (claimed_file->syms[i].resolution)
+            {
+            case LDPR_UNKNOWN:
+              res = "UNKNOWN";
+              break;
+            case LDPR_UNDEF:
+              res = "UNDEF";
+              break;
+            case LDPR_PREVAILING_DEF:
+              res = "PREVAILING_DEF_REG";
+              break;
+            case LDPR_PREVAILING_DEF_IRONLY:
+              res = "PREVAILING_DEF_IRONLY";
+              break;
+            case LDPR_PREEMPTED_REG:
+              res = "PREEMPTED_REG";
+              break;
+            case LDPR_PREEMPTED_IR:
+              res = "PREEMPTED_IR";
+              break;
+            case LDPR_RESOLVED_IR:
+              res = "RESOLVED_IR";
+              break;
+            case LDPR_RESOLVED_EXEC:
+              res = "RESOLVED_EXEC";
+              break;
+            case LDPR_RESOLVED_DYN:
+              res = "RESOLVED_DYN";
+              break;
+            default:
+              res = "?";
+              break;
+            }
+          (*message)(LDPL_INFO, "%s: %s: %s", claimed_file->name,
+                     claimed_file->syms[i].name, res);
+        }
+    }
+
+  if (add_input_file == NULL)
+    {
+      fprintf(stderr, "tv_add_input_file interface missing\n");
+      return LDPS_ERR;
+    }
+  if (get_input_file == NULL)
+    {
+      fprintf(stderr, "tv_get_input_file interface missing\n");
+      return LDPS_ERR;
+    }
+  if (release_input_file == NULL)
+    {
+      fprintf(stderr, "tv_release_input_file interface missing\n");
+      return LDPS_ERR;
+    }
+
+  for (claimed_file = first_claimed_file;
+       claimed_file != NULL;
+       claimed_file = claimed_file->next)
+    {
+      (*get_input_file) (claimed_file->handle, &file);
+
+      /* Look for the beginning of output from readelf -s.  */
+      irfile = fdopen(file.fd, "r");
+      (void)fseek(irfile, file.offset, SEEK_SET);
+      end_offset = file.offset + file.filesize;
+      len = fread(buf, 1, 13, irfile);
+      if (len < 13 || strncmp(buf, "\nSymbol table", 13) != 0)
+        {
+          fprintf(stderr, "%s: can't re-read original input file\n",
+                  claimed_file->name);
+          return LDPS_ERR;
+        }
+
+      /* Skip the two header lines.  */
+      (void) fgets(buf, sizeof(buf), irfile);
+      (void) fgets(buf, sizeof(buf), irfile);
+
+      filename = NULL;
+      while (ftell(irfile) < end_offset
+             && fgets(buf, sizeof(buf), irfile) != NULL)
+        {
+          parse_readelf_line(buf, &info);
+
+          /* Look for file name.  */
+          if (strncmp(info.type, "FILE", 4) == 0)
+            {
+              len = strlen(info.name);
+              p = malloc(len + 1);
+              strncpy(p, info.name, len + 1);
+              filename = p;
+              break;
+            }
+        }
+
+      (*release_input_file) (claimed_file->handle);
+
+      if (filename == NULL)
+        filename = claimed_file->name;
+
+      if (claimed_file->nsyms == 0)
+        continue;
+
+      if (strlen(filename) >= sizeof(buf))
+        {
+          (*message)(LDPL_FATAL, "%s: filename too long", filename);
+          return LDPS_ERR;
+        }
+      strcpy(buf, filename);
+      p = strrchr(buf, '.');
+      if (p == NULL
+          || (strcmp(p, ".syms") != 0
+              && strcmp(p, ".c") != 0
+              && strcmp(p, ".cc") != 0))
+        {
+          (*message)(LDPL_FATAL, "%s: filename has unknown suffix",
+                     filename);
+          return LDPS_ERR;
+        }
+      p[1] = 'o';
+      p[2] = '\0';
+      (*message)(LDPL_INFO, "%s: adding new input file", buf);
+      (*add_input_file)(buf);
+    }
+
+  return LDPS_OK;
+}
+
+enum ld_plugin_status
+cleanup_hook(void)
+{
+  (*message)(LDPL_INFO, "cleanup hook called");
+  return LDPS_OK;
+}
+
+static void
+parse_readelf_line(char* p, struct sym_info* info)
+{
+  int len;
+
+  p += strspn(p, " ");
+
+  /* Index field.  */
+  p += strcspn(p, " ");
+  p += strspn(p, " ");
+
+  /* Value field.  */
+  p += strcspn(p, " ");
+  p += strspn(p, " ");
+
+  /* Size field.  */
+  info->size = atoi(p);
+  p += strcspn(p, " ");
+  p += strspn(p, " ");
+
+  /* Type field.  */
+  info->type = p;
+  p += strcspn(p, " ");
+  p += strspn(p, " ");
+
+  /* Binding field.  */
+  info->bind = p;
+  p += strcspn(p, " ");
+  p += strspn(p, " ");
+
+  /* Visibility field.  */
+  info->vis = p;
+  p += strcspn(p, " ");
+  p += strspn(p, " ");
+
+  /* Section field.  */
+  info->sect = p;
+  p += strcspn(p, " ");
+  p += strspn(p, " ");
+
+  /* Name field.  */
+  /* FIXME:  Look for version.  */
+  len = strlen(p);
+  if (len == 0)
+    p = NULL;
+  else if (p[len-1] == '\n')
+    p[--len] = '\0';
+  info->name = p;
+}