Reduce parameter list in bfd_elf32_arm_target_relocs

2016-08-26  Thomas Preud'homme  <thomas.preudhomme@arm.com>

bfd/
	* bfd-in.h (struct elf32_arm_params): Define.
	(bfd_elf32_arm_set_target_relocs): Rename into ...
	(bfd_elf32_arm_set_target_params): This.  Use a struct
	elf32_arm_params to pass all parameters but the bfd and bfd_link_info.
	* bfd-in2.h: Regenerate.
	* elf32-arm.c (bfd_elf32_arm_set_target_relocs): Rename into ...
	(bfd_elf32_arm_set_target_params): This.  Pass all values via a struct
	elf32_arm_params rather than as individual parameters.

ld/
	* emultempl/armelf.em (params): New static variable.
	(thumb_entry_symbol, byteswap_code, target1_is_rel, target2_type,
	fix_v4bx, use_blx, vfp11_denorm_fix, stm32l4xx_fix, fix_cortex_a8,
	no_enum_size_warning, no_wchar_size_warning, pic_veneer,
	merge_exidx_entries, fix_arm1176, cmse_implib): move as part of the
	above new structure.
	(arm_elf_before_allocation): Access static variable from the params
	structure.
	(gld${EMULATION_NAME}_finish): Likewise.
	(arm_elf_create_output_section_statements): Likewise and pass the
	address of that structure to bfd_elf32_arm_set_target_relocs instead
	of the static variables.
	(PARSE_AND_LIST_ARGS_CASES): Access static variable from the params
	structure.

1 files changed, 55 insertions, 62 deletions

diff --git a/ld/emultempl/armelf.em b/ld/emultempl/armelf.em
index 306caf1..27f95f2 100644
--- a/ld/emultempl/armelf.em
+++ b/ld/emultempl/armelf.em
@@ -28,21 +28,25 @@ fragment <<EOF
 #include "ldctor.h"
 #include "elf/arm.h"
 
-static char * thumb_entry_symbol = NULL;
-static int byteswap_code = 0;
-static int target1_is_rel = 0${TARGET1_IS_REL};
-static char * target2_type = "${TARGET2_TYPE}";
-static int fix_v4bx = 0;
-static int use_blx = 0;
-static bfd_arm_vfp11_fix vfp11_denorm_fix = BFD_ARM_VFP11_FIX_DEFAULT;
-static bfd_arm_stm32l4xx_fix stm32l4xx_fix = BFD_ARM_STM32L4XX_FIX_NONE;
-static int fix_cortex_a8 = -1;
-static int no_enum_size_warning = 0;
-static int no_wchar_size_warning = 0;
-static int pic_veneer = 0;
-static int merge_exidx_entries = -1;
-static int fix_arm1176 = 1;
-static int cmse_implib = 0;
+static struct elf32_arm_params params =
+{
+  NULL,				/* thumb_entry_symbol */
+  0,				/* byteswap_code */
+  0${TARGET1_IS_REL},		/* target1_is_rel */
+  "${TARGET2_TYPE}",		/* target2_type */
+  0,				/* fix_v4bx */
+  0,				/* use_blx */
+  BFD_ARM_VFP11_FIX_DEFAULT,	/* vfp11_denorm_fix */
+  BFD_ARM_STM32L4XX_FIX_NONE,	/* stm32l4xx_fix */
+  0,				/* no_enum_size_warning */
+  0,				/* no_wchar_size_warning */
+  0,				/* pic_veneer */
+  -1,				/* fix_cortex_a8 */
+  1,				/* fix_arm1176 */
+  -1,				/* merge_exidx_entries */
+  0,				/* cmse_implib */
+  NULL				/* in_implib_bfd */
+};
 static char *in_implib_filename = NULL;
 
 static void
@@ -73,7 +77,7 @@ gld${EMULATION_NAME}_set_symbols (void)
 static void
 arm_elf_before_allocation (void)
 {
-  bfd_elf32_arm_set_byteswap_code (&link_info, byteswap_code);
+  bfd_elf32_arm_set_byteswap_code (&link_info, params.byteswap_code);
 
   /* Choose type of VFP11 erratum fix, or warn if specified fix is unnecessary
      due to architecture version.  */
@@ -358,7 +362,7 @@ gld${EMULATION_NAME}_after_allocation (void)
   qsort (sec_list, sec_count, sizeof (asection *), &compare_output_sec_vma);
 
   if (elf32_arm_fix_exidx_coverage (sec_list, sec_count, &link_info,
-				    merge_exidx_entries))
+				    params.merge_exidx_entries))
     need_laying_out = 1;
 
   free (sec_list);
@@ -439,9 +443,9 @@ gld${EMULATION_NAME}_finish (void)
 
   finish_default ();
 
-  if (thumb_entry_symbol)
+  if (params.thumb_entry_symbol)
     {
-      h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol,
+      h = bfd_link_hash_lookup (link_info.hash, params.thumb_entry_symbol,
 				FALSE, FALSE, TRUE);
     }
   else
@@ -484,15 +488,15 @@ gld${EMULATION_NAME}_finish (void)
 
       sprintf_vma (buffer + 2, val);
 
-      if (thumb_entry_symbol != NULL && entry_symbol.name != NULL
+      if (params.thumb_entry_symbol != NULL && entry_symbol.name != NULL
 	  && entry_from_cmdline)
 	einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"),
-	       thumb_entry_symbol, entry_symbol.name);
+	       params.thumb_entry_symbol, entry_symbol.name);
       entry_symbol.name = buffer;
     }
   else
     einfo (_("%P: warning: cannot find thumb start symbol %s\n"),
-	   thumb_entry_symbol);
+	   params.thumb_entry_symbol);
 }
 
 /* This is a convenient point to tell BFD about target specific flags.
@@ -500,8 +504,6 @@ gld${EMULATION_NAME}_finish (void)
 static void
 arm_elf_create_output_section_statements (void)
 {
-  bfd *in_implib_bfd;
-
   if (strstr (bfd_get_target (link_info.output_bfd), "arm") == NULL)
     {
       /* The arm backend needs special fields in the output hash structure.
@@ -514,26 +516,17 @@ arm_elf_create_output_section_statements (void)
 
   if (in_implib_filename)
     {
-      in_implib_bfd = bfd_openr (in_implib_filename,
-				 bfd_get_target (link_info.output_bfd));
+      params.in_implib_bfd = bfd_openr (in_implib_filename,
+					bfd_get_target (link_info.output_bfd));
 
-      if (in_implib_bfd == NULL)
+      if (params.in_implib_bfd == NULL)
 	einfo ("%F%s: Can't open: %E\n", in_implib_filename);
 
-      if (!bfd_check_format (in_implib_bfd, bfd_object))
+      if (!bfd_check_format (params.in_implib_bfd, bfd_object))
 	einfo ("%F%s: Not a relocatable file: %E\n", in_implib_filename);
     }
-  else
-    in_implib_bfd = NULL;
 
-  bfd_elf32_arm_set_target_relocs (link_info.output_bfd, &link_info,
-				   target1_is_rel,
-				   target2_type, fix_v4bx, use_blx,
-				   vfp11_denorm_fix, stm32l4xx_fix,
-				   no_enum_size_warning,
-				   no_wchar_size_warning,
-				   pic_veneer, fix_cortex_a8,
-				   fix_arm1176, cmse_implib, in_implib_bfd);
+  bfd_elf32_arm_set_target_params (link_info.output_bfd, &link_info, &params);
 
   stub_file = lang_add_input_file ("linker stubs",
  				   lang_input_file_is_fake_enum,
@@ -676,71 +669,71 @@ PARSE_AND_LIST_ARGS_CASES='
       break;
 
     case OPTION_THUMB_ENTRY:
-      thumb_entry_symbol = optarg;
+      params.thumb_entry_symbol = optarg;
       break;
 
     case OPTION_BE8:
-      byteswap_code = 1;
+      params.byteswap_code = 1;
       break;
 
     case OPTION_TARGET1_REL:
-      target1_is_rel = 1;
+      params.target1_is_rel = 1;
       break;
 
     case OPTION_TARGET1_ABS:
-      target1_is_rel = 0;
+      params.target1_is_rel = 0;
       break;
 
     case OPTION_TARGET2:
-      target2_type = optarg;
+      params.target2_type = optarg;
       break;
 
     case OPTION_FIX_V4BX:
-      fix_v4bx = 1;
+      params.fix_v4bx = 1;
       break;
 
     case OPTION_FIX_V4BX_INTERWORKING:
-      fix_v4bx = 2;
+      params.fix_v4bx = 2;
       break;
 
     case OPTION_USE_BLX:
-      use_blx = 1;
+      params.use_blx = 1;
       break;
 
     case OPTION_VFP11_DENORM_FIX:
       if (strcmp (optarg, "none") == 0)
-        vfp11_denorm_fix = BFD_ARM_VFP11_FIX_NONE;
+        params.vfp11_denorm_fix = BFD_ARM_VFP11_FIX_NONE;
       else if (strcmp (optarg, "scalar") == 0)
-        vfp11_denorm_fix = BFD_ARM_VFP11_FIX_SCALAR;
+        params.vfp11_denorm_fix = BFD_ARM_VFP11_FIX_SCALAR;
       else if (strcmp (optarg, "vector") == 0)
-        vfp11_denorm_fix = BFD_ARM_VFP11_FIX_VECTOR;
+        params.vfp11_denorm_fix = BFD_ARM_VFP11_FIX_VECTOR;
       else
         einfo (_("Unrecognized VFP11 fix type '\''%s'\''.\n"), optarg);
       break;
 
     case OPTION_STM32L4XX_FIX:
       if (!optarg)
-        stm32l4xx_fix = BFD_ARM_STM32L4XX_FIX_DEFAULT;
+        params.stm32l4xx_fix = BFD_ARM_STM32L4XX_FIX_DEFAULT;
       else if (strcmp (optarg, "none") == 0)
-        stm32l4xx_fix = BFD_ARM_STM32L4XX_FIX_NONE;
+        params.stm32l4xx_fix = BFD_ARM_STM32L4XX_FIX_NONE;
       else if (strcmp (optarg, "default") == 0)
-        stm32l4xx_fix = BFD_ARM_STM32L4XX_FIX_DEFAULT;
+        params.stm32l4xx_fix = BFD_ARM_STM32L4XX_FIX_DEFAULT;
       else if (strcmp (optarg, "all") == 0)
-        stm32l4xx_fix = BFD_ARM_STM32L4XX_FIX_ALL;
+        params.stm32l4xx_fix = BFD_ARM_STM32L4XX_FIX_ALL;
       else
         einfo (_("Unrecognized STM32L4XX fix type '\''%s'\''.\n"), optarg);
       break;
 
     case OPTION_NO_ENUM_SIZE_WARNING:
-      no_enum_size_warning = 1;
+      params.no_enum_size_warning = 1;
       break;
 
     case OPTION_NO_WCHAR_SIZE_WARNING:
-      no_wchar_size_warning = 1;
+      params.no_wchar_size_warning = 1;
       break;
 
     case OPTION_PIC_VENEER:
-      pic_veneer = 1;
+      params.pic_veneer = 1;
       break;
 
     case OPTION_STUBGROUP_SIZE:
@@ -754,23 +747,23 @@ PARSE_AND_LIST_ARGS_CASES='
       break;
 
     case OPTION_FIX_CORTEX_A8:
-      fix_cortex_a8 = 1;
+      params.fix_cortex_a8 = 1;
       break;
 
     case OPTION_NO_FIX_CORTEX_A8:
-      fix_cortex_a8 = 0;
+      params.fix_cortex_a8 = 0;
       break;
 
    case OPTION_NO_MERGE_EXIDX_ENTRIES:
-      merge_exidx_entries = 0;
+      params.merge_exidx_entries = 0;
       break;
 
    case OPTION_FIX_ARM1176:
-      fix_arm1176 = 1;
+      params.fix_arm1176 = 1;
       break;
 
    case OPTION_NO_FIX_ARM1176:
-      fix_arm1176 = 0;
+      params.fix_arm1176 = 0;
       break;
 
    case OPTION_LONG_PLT:
@@ -778,7 +771,7 @@ PARSE_AND_LIST_ARGS_CASES='
       break;
 
    case OPTION_CMSE_IMPLIB:
-      cmse_implib = 1;
+      params.cmse_implib = 1;
       break;
 
    case OPTION_IN_IMPLIB: