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[m68k] additional coldfire multilib

From: Nathan Sidwell <nathan at codesourcery dot com>
To: GCC Patches <gcc-patches at gcc dot gnu dot org>
Date: Tue, 12 May 2009 07:26:56 +0100
Subject: [m68k] additional coldfire multilib

Freescale's 54455 family of cpus has an MMU and is therefore capable of running linux. However people want to run uclinux on it, apparently, and it requires its own multilib because it is isa-c.

This adds a new flag to select a processor for uclinux even when it has an MMU -- previously only 68020 was in this category and special cased.

ok?

nathan
--
Nathan Sidwell    ::   http://www.codesourcery.com   ::         CodeSourcery

2009-05-12  Nathan Sidwell  <nathan@codesourcery.com>

	* config/m68k/t-uclinux (M68K_MLIB_CPU): Check for FL_UCLINUX.
	* config/m68k/m68k-devices.def: Add FL_UCLINUX to 68020 and 54455
	multilibs.
	* config/m68k/m68k.h (FL_UCLINUX): Define.

Index: config/m68k/t-uclinux
===================================================================
--- config/m68k/t-uclinux	(revision 147417)
+++ config/m68k/t-uclinux	(working copy)
@@ -19,8 +19,8 @@
 # crti and crtn are provided by uClibc.
 EXTRA_MULTILIB_PARTS=crtbegin.o crtend.o
 
-# Only include multilibs for the 68020 and for CPUs without an MMU.
-M68K_MLIB_CPU += && (MLIB == "68020" || !match(FLAGS, "FL_MMU"))
+# Include multilibs for CPUs without an MMU or with FL_UCLINUX
+M68K_MLIB_CPU += && (!match(FLAGS, "FL_MMU") || match(FLAGS, "FL_UCLINUX"))
 
 # Add multilibs for execute-in-place and shared-library code.
 M68K_MLIB_OPTIONS += msep-data/mid-shared-library
Index: config/m68k/m68k-devices.def
===================================================================
--- config/m68k/m68k-devices.def	(revision 147417)
+++ config/m68k/m68k-devices.def	(working copy)
@@ -72,8 +72,8 @@
 /* 680x0 series processors.  */
 M68K_DEVICE ("68000", m68000,   "68000", "68000", 68000,    isa_00,    0)
 M68K_DEVICE ("68010", m68010,   "68010", "68000", 68010,    isa_10,    0)
-M68K_DEVICE ("68020", m68020,   "68020", "68020", 68020,    isa_20,    FL_MMU)
-M68K_DEVICE ("68030", m68030,   "68030", "68020", 68030,    isa_20,    FL_MMU)
+M68K_DEVICE ("68020", m68020,   "68020", "68020", 68020,    isa_20,    FL_MMU | FL_UCLINUX)
+M68K_DEVICE ("68030", m68030,   "68030", "68020", 68030,    isa_20,    FL_MMU | FL_UCLINUX)
 M68K_DEVICE ("68040", m68040,   "68040", "68040", 68040,    isa_40,    FL_MMU)
 M68K_DEVICE ("68060", m68060,   "68060", "68060", 68060,    isa_40,    FL_MMU)
 M68K_DEVICE ("68302", m68302,   "68302", "68000", 68000,    isa_00,    FL_MMU)
@@ -158,12 +158,12 @@ M68K_DEVICE ("537x",  mcf537x,  "5373", 
 
 /* CFV4/CFV4e processors.  */
 M68K_DEVICE ("5407",  mcf5407,  "5407",  "5407",  cfv4,     isa_b,     FL_CF_MAC)
-M68K_DEVICE ("54450", mcf54450, "54455", "54455", cfv4,     isa_c,     FL_CF_HWDIV | FL_CF_USP | FL_CF_EMAC | FL_MMU)
-M68K_DEVICE ("54451", mcf54451, "54455", "54455", cfv4,     isa_c,     FL_CF_HWDIV | FL_CF_USP | FL_CF_EMAC | FL_MMU)
-M68K_DEVICE ("54452", mcf54452, "54455", "54455", cfv4,     isa_c,     FL_CF_HWDIV | FL_CF_USP | FL_CF_EMAC | FL_MMU)
-M68K_DEVICE ("54453", mcf54453, "54455", "54455", cfv4,     isa_c,     FL_CF_HWDIV | FL_CF_USP | FL_CF_EMAC | FL_MMU)
-M68K_DEVICE ("54454", mcf54454, "54455", "54455", cfv4,     isa_c,     FL_CF_HWDIV | FL_CF_USP | FL_CF_EMAC | FL_MMU)
-M68K_DEVICE ("54455", mcf54455, "54455", "54455", cfv4,     isa_c,     FL_CF_HWDIV | FL_CF_USP | FL_CF_EMAC | FL_MMU)
+M68K_DEVICE ("54450", mcf54450, "54455", "54455", cfv4,     isa_c,     FL_CF_HWDIV | FL_CF_USP | FL_CF_EMAC | FL_MMU | FL_UCLINUX)
+M68K_DEVICE ("54451", mcf54451, "54455", "54455", cfv4,     isa_c,     FL_CF_HWDIV | FL_CF_USP | FL_CF_EMAC | FL_MMU | FL_UCLINUX)
+M68K_DEVICE ("54452", mcf54452, "54455", "54455", cfv4,     isa_c,     FL_CF_HWDIV | FL_CF_USP | FL_CF_EMAC | FL_MMU | FL_UCLINUX)
+M68K_DEVICE ("54453", mcf54453, "54455", "54455", cfv4,     isa_c,     FL_CF_HWDIV | FL_CF_USP | FL_CF_EMAC | FL_MMU | FL_UCLINUX)
+M68K_DEVICE ("54454", mcf54454, "54455", "54455", cfv4,     isa_c,     FL_CF_HWDIV | FL_CF_USP | FL_CF_EMAC | FL_MMU | FL_UCLINUX)
+M68K_DEVICE ("54455", mcf54455, "54455", "54455", cfv4,     isa_c,     FL_CF_HWDIV | FL_CF_USP | FL_CF_EMAC | FL_MMU | FL_UCLINUX)
 M68K_DEVICE ("5470",  mcf5470,  "5475",  "5475",  cfv4e,    isa_b,     FL_CF_USP | FL_CF_EMAC | FL_CF_FPU | FL_MMU)
 M68K_DEVICE ("5471",  mcf5471,  "5475",  "5475",  cfv4e,    isa_b,     FL_CF_USP | FL_CF_EMAC | FL_CF_FPU | FL_MMU)
 M68K_DEVICE ("5472",  mcf5472,  "5475",  "5475",  cfv4e,    isa_b,     FL_CF_USP | FL_CF_EMAC | FL_CF_FPU | FL_MMU)
Index: config/m68k/m68k.h
===================================================================
--- config/m68k/m68k.h	(revision 147417)
+++ config/m68k/m68k.h	(working copy)
@@ -232,6 +232,7 @@ along with GCC; see the file COPYING3.  
 #define FL_ISA_C     (1 << 16)
 #define FL_FIDOA     (1 << 17)
 #define FL_MMU 	     0   /* Used by multilib machinery.  */
+#define FL_UCLINUX   0   /* Used by multilib machinery.  */
 
 #define TARGET_68010		((m68k_cpu_flags & FL_ISA_68010) != 0)
 #define TARGET_68020		((m68k_cpu_flags & FL_ISA_68020) != 0)

Follow-Ups:
- Re: [m68k] additional coldfire multilib
  - From: Andreas Schwab

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