From d611a82e6706d8dc0c0007406e722eeef59fb702 Mon Sep 17 00:00:00 2001
From: Kim Knuttila <krk@cygnus>
Date: Thu, 30 Nov 1995 18:18:38 +0000
Subject: Expose .edata section

---
 ld/ChangeLog            |   5 ++
 ld/scripttempl/ppcpe.sc | 195 ++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 200 insertions(+)
 create mode 100644 ld/scripttempl/ppcpe.sc

(limited to 'ld')

diff --git a/ld/ChangeLog b/ld/ChangeLog
index 444c4cd..ebaddc5 100644
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,8 @@
+Thu Nov 30 13:14:30 1995  Kim Knuttila  <krk@cygnus.com>
+
+	* scripttempl/ppcpe.sc: Moved .edata into its own section to
+	expose it.
+
 Thu Nov 30 11:32:34 1995  Manfred Hollstein KS/EF4A 60/1F/110 #40283  <manfred@lts.sel.alcatel.de>
 
 	* configure.host (m68*-motorola-sysv): Define HOSTING_CRT0 and
diff --git a/ld/scripttempl/ppcpe.sc b/ld/scripttempl/ppcpe.sc
new file mode 100644
index 0000000..4452213
--- /dev/null
+++ b/ld/scripttempl/ppcpe.sc
@@ -0,0 +1,195 @@
+# A PE linker script for PowerPC.
+# Loosely based on Steve Chamberlain's pe.sc.
+# All new mistakes should be credited to Kim Knuttila (krk@cygnus.com)
+#
+# These are substituted in as variables in order to get '}' in a shell
+# conditional expansion.
+INIT='.init : { *(.init) }'
+FINI='.fini : { *(.fini) }'
+cat <<EOF
+OUTPUT_FORMAT(${OUTPUT_FORMAT})
+${LIB_SEARCH_DIRS}
+
+/* Much of this layout was determined by delving into .exe files for
+   the box generated by other compilers/linkers/etc. This means that
+   if a particular feature did not happen to appear in one of the 
+   subject files, then it may not be yet supported.
+*/
+
+/* It's "mainCRTStartup", not "_mainCRTStartup", and it's located in
+   one of the two .lib files (libc.lib and kernel32.lib) that currently
+   must be present on the link line. This means that you must use 
+   "-u mainCRTStartup" to make sure it gets included in the link.
+*/
+
+ENTRY(mainCRTStartup)
+
+SECTIONS
+{
+
+  /* text - the usual meaning */
+  .text ${RELOCATING+ __image_base__ + __section_alignment__ } : 
+	{
+	    ${RELOCATING+ *(.init);}
+	    *(.text)
+	    ${CONSTRUCTING+ ___CTOR_LIST__ = .; __CTOR_LIST__ = . ; 
+		        LONG (-1); *(.ctors); *(.ctor); LONG (0); }
+            ${CONSTRUCTING+ ___DTOR_LIST__ = .; __DTOR_LIST__ = . ; 
+			LONG (-1); *(.dtors); *(.dtor);  LONG (0); }
+	    ${RELOCATING+ *(.fini);}
+	    ${RELOCATING+ etext  =  .};
+	}
+
+  /* rdata - Read Only Runtime Data
+     CTR sections: All of the CRT (read only C runtime data) sections 
+	appear at the start of the .rdata (read only runtime data) 
+	section, in the following order. Don't know if it matters or not.
+	Not all sections are always present either.
+     .rdata: compiler generated read only data
+     .xdata: compiler generated exception handling table. (Most docs
+	seem to suggest that this section is now deprecated infavor
+	of the ydata section)
+     .edata: The exported names table.
+  */
+  .rdata BLOCK(__section_alignment__) :
+	{
+	    *(.CRT\$XCA);
+	    *(.CRT\$XCC);
+	    *(.CRT\$XCZ);
+	    *(.CRT\$XIA);
+	    *(.CRT\$XIC);
+	    *(.CRT\$XIZ);
+	    *(.CRT\$XLA);
+	    *(.CRT\$XLZ);
+	    *(.CRT\$XPA);
+	    *(.CRT\$XPX);
+	    *(.CRT\$XPZ);
+	    *(.CRT\$XTA);
+	    *(.CRT\$XTZ);
+	    *(.rdata);
+	    *(.xdata);
+	}
+
+  .edata BLOCK(__section_alignment__) :
+	{
+    	    *(.edata);
+	}
+
+  /* data - initialized data
+     .ydata: exception handling information.
+     .data: the usual meaning.
+     .data2: more of the same.
+     .bss: For some reason, bss appears to be included in the data
+	section, as opposed to being given a section of it's own.
+     COMMON:
+  */
+  .data BLOCK(__section_alignment__) : 
+	{
+	    __data_start__ = . ; 
+	    *(.ydata);
+	    *(.data);
+	    *(.data2);
+	    __bss_start__ = . ;
+	    *(.bss) ;
+	    *(COMMON);
+	    __bss_end__ = . ;
+	    ${RELOCATING+ end =  .};
+ 	    __data_end__ = . ; 
+	}
+
+  /* The exception handling table. A sequence of 5 word entries. Section
+     address and extent are placed in the DataDirectory.
+  */
+  .pdata BLOCK(__section_alignment__) :
+	{ 					
+	    *(.pdata)
+ 	    ;
+	}
+
+  /* The idata section is chock full of magic bits. 
+	1. Boundaries around various idata parts are used to initialize
+	   some of the fields of the DataDirectory. In particular, the
+	   magic for 2, 4 and 5 are known to be used. Some compilers
+	   appear to generate magic section symbols for this purpose.
+	   Where we can, we catch such symbols and use our own. This of
+	   course is something less than a perfect strategy.
+	2. The table of contents is placed immediately after idata4.
+	   The ".private.toc" sections are generated by the ppc bfd. The
+	   .toc variable is generated by gas, and resolved here. It is
+	   used to initialized function descriptors (and anyone else who
+	   needs the address of the module's toc). The only thing 
+	   interesting about it at all? Most ppc instructions using it
+	   have a 16bit displacement field. The convention for addressing
+	   is to initialize the .toc value to 32K past the start of the
+	   actual toc, and subtract 32K from all references, thus using
+	   the entire 64K range. Naturally, the reloc code must agree
+	   on this number or you get pretty stupid results.
+  */
+  .idata BLOCK(__section_alignment__) :
+	{ 					
+	    __idata2_magic__ = .;
+	    *(.idata\$2);
+	    __idata3_magic__ = .;
+	    *(.idata\$3);
+	    __idata4_magic__ = .;
+	    *(.idata\$4);
+	    .toc = . + 32768;
+	    *(.private.toc);
+	    __idata5_magic__ = .;
+	    *(.idata\$5);
+	    __idata6_magic__ = .;
+	    *(.idata\$6);
+	    __idata7_magic__ = .;
+	    *(.idata\$7);
+	    ;
+	}
+
+  /* reldata -- data that requires relocation
+  */
+  .reldata BLOCK(__section_alignment__) :
+	{ 					
+	    *(.reldata)
+ 	    ;
+	}
+
+  /* We don't do anything useful with codeview debugger support or the
+     directive section (yet). Hopefully, we junk them correctly. 
+  */
+  .junk BLOCK(__section_alignment__) : 
+	{
+    	    *(.debug\$S)
+    	    *(.debug\$T)
+    	    *(.debug\$F)
+    	    *(.drectve)
+    	    ;
+   	}
+
+  /* Resources */
+  .rsrc BLOCK(__section_alignment__) :
+	{ 					
+	    *(.rsrc\$01)
+	    *(.rsrc\$02)
+	    ;
+	}
+
+  /* The .reloc section is currently generated by the dlltool from Steve 
+     Chamberlain in a second pass of linking. Section address and extent
+     are placed in the DataDirectory.
+  */
+  .reloc BLOCK(__section_alignment__) :
+	{ 					
+	    *(.reloc)
+	    ;
+	}
+
+  .stab BLOCK(__section_alignment__)  ${RELOCATING+(NOLOAD)} : 
+	{
+    	     [ .stab ]
+  	}
+
+  .stabstr BLOCK(__section_alignment__) ${RELOCATING+(NOLOAD)} :
+  	{
+    	     [ .stabstr ]
+  	}
+}
+EOF
-- 
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