From b524c55021eccbd25c39b54df694ccc90212f38b Mon Sep 17 00:00:00 2001
From: Huw Davies <huw@codeweavers.com>
Date: Tue, 25 Aug 2009 13:29:47 +0100
Subject: [PATCH] widl: Add separate --win32-align and --win64-align options.

---
 tools/widl/typegen.c | 16 +++++++++++-----
 tools/widl/widl.c    | 25 ++++++++++++++++++-------
 tools/widl/widl.h    |  3 ++-
 3 files changed, 31 insertions(+), 13 deletions(-)

diff --git a/tools/widl/typegen.c b/tools/widl/typegen.c
index d9a2c0daa8e..e7e898079a9 100644
--- a/tools/widl/typegen.c
+++ b/tools/widl/typegen.c
@@ -144,6 +144,13 @@ unsigned char get_basic_fc(const type_t *type)
     }
 }
 
+static inline unsigned int clamp_align(unsigned int align)
+{
+    unsigned int packing = (pointer_size == 4) ? win32_packing : win64_packing;
+    if(align > packing) align = packing;
+    return align;
+}
+
 unsigned char get_pointer_fc(const type_t *type, const attr_list_t *attrs, int toplevel_param)
 {
     const type_t *t;
@@ -1164,13 +1171,12 @@ static unsigned int fields_memsize(const var_list_t *fields, unsigned int *align
         unsigned int falign = 0;
         unsigned int fsize = type_memsize(v->type, &falign);
         if (*align < falign) *align = falign;
-        if (falign > packing) falign = packing;
+        falign = clamp_align(falign);
         size = ROUND_SIZE(size, falign);
         size += fsize;
     }
 
-    max_align = *align;
-    if(max_align > packing) max_align = packing;
+    max_align = clamp_align(*align);
     size = ROUND_SIZE(size, max_align);
 
     return size;
@@ -1210,7 +1216,7 @@ int get_padding(const var_list_t *fields)
         type_t *ft = f->type;
         unsigned int align = 0;
         unsigned int size = type_memsize(ft, &align);
-        if (align > packing) align = packing;
+        align = clamp_align(align);
         if (align > salign) salign = align;
         offset = ROUND_SIZE(offset, align);
         offset += size;
@@ -2279,7 +2285,7 @@ static void write_struct_members(FILE *file, const type_t *type,
         type_t *ft = field->type;
         unsigned int align = 0;
         unsigned int size = type_memsize(ft, &align);
-        if(align > packing) align = packing;
+        align = clamp_align(align);
         if (salign < align) salign = align;
 
         if (!is_conformant_array(ft) || type_array_is_decl_as_ptr(ft))
diff --git a/tools/widl/widl.c b/tools/widl/widl.c
index 38e05cf5b8c..60322d3f58f 100644
--- a/tools/widl/widl.c
+++ b/tools/widl/widl.c
@@ -52,7 +52,6 @@
 static const char usage[] =
 "Usage: widl [options...] infile.idl\n"
 "   or: widl [options...] --dlldata-only name1 [name2...]\n"
-"   -a n               Set structure alignment to 'n'\n"
 "   -b arch            Set the target architecture\n"
 "   -c                 Generate client stub\n"
 "   -C file            Name of client stub file (default is infile_c.c)\n"
@@ -82,6 +81,8 @@ static const char usage[] =
 "   -W                 Enable pedantic warnings\n"
 "   --win32            Only generate 32-bit code\n"
 "   --win64            Only generate 64-bit code\n"
+"   --win32-align n    Set win32 structure alignment to 'n'\n"
+"   --win64-align n    Set win64 structure alignment to 'n'\n"
 "Debug level 'n' is a bitmask with following meaning:\n"
 "    * 0x01 Tell which resource is parsed (verbose mode)\n"
 "    * 0x02 Dump internal structures\n"
@@ -111,7 +112,8 @@ int no_preprocess = 0;
 int old_names = 0;
 int do_win32 = 1;
 int do_win64 = 1;
-int packing = 8;
+int win32_packing = 8;
+int win64_packing = 8;
 
 char *input_name;
 char *header_name;
@@ -150,11 +152,13 @@ enum {
     PREFIX_CLIENT_OPTION,
     PREFIX_SERVER_OPTION,
     WIN32_OPTION,
-    WIN64_OPTION
+    WIN64_OPTION,
+    WIN32_ALIGN_OPTION,
+    WIN64_ALIGN_OPTION
 };
 
 static const char short_options[] =
-    "a:b:cC:d:D:EhH:I:m:NpP:sS:tT:uU:VW";
+    "b:cC:d:D:EhH:I:m:NpP:sS:tT:uU:VW";
 static const struct option long_options[] = {
     { "dlldata", 1, 0, DLLDATA_OPTION },
     { "dlldata-only", 0, 0, DLLDATA_ONLY_OPTION },
@@ -165,6 +169,8 @@ static const struct option long_options[] = {
     { "prefix-server", 1, 0, PREFIX_SERVER_OPTION },
     { "win32", 0, 0, WIN32_OPTION },
     { "win64", 0, 0, WIN64_OPTION },
+    { "win32-align", 1, 0, WIN32_ALIGN_OPTION },
+    { "win64-align", 1, 0, WIN64_ALIGN_OPTION },
     { 0, 0, 0, 0 }
 };
 
@@ -522,9 +528,14 @@ int main(int argc,char *argv[])
       do_win32 = 0;
       do_win64 = 1;
       break;
-    case 'a':
-      packing = strtol(optarg, NULL, 0);
-      if(packing != 2 && packing != 4 && packing != 8)
+    case WIN32_ALIGN_OPTION:
+      win32_packing = strtol(optarg, NULL, 0);
+      if(win32_packing != 2 && win32_packing != 4 && win32_packing != 8)
+          error("Packing must be one of 2, 4 or 8\n");
+      break;
+    case WIN64_ALIGN_OPTION:
+      win64_packing = strtol(optarg, NULL, 0);
+      if(win64_packing != 2 && win64_packing != 4 && win64_packing != 8)
           error("Packing must be one of 2, 4 or 8\n");
       break;
     case 'b':
diff --git a/tools/widl/widl.h b/tools/widl/widl.h
index d6a46fcae00..5de2cba16db 100644
--- a/tools/widl/widl.h
+++ b/tools/widl/widl.h
@@ -46,7 +46,8 @@ extern int do_dlldata;
 extern int old_names;
 extern int do_win32;
 extern int do_win64;
-extern int packing;
+extern int win32_packing;
+extern int win64_packing;
 
 extern char *input_name;
 extern char *header_name;