Ported to Linux/m68k. The patches were kindly provided by

Jes Sorensen <Jes.Sorensen@cern.ch>.

3 files changed, 74 insertions, 1 deletions

diff --git a/config/Linux.mk b/config/Linux.mk
index 9b088fdd..e9ae9524 100644
--- a/config/Linux.mk
+++ b/config/Linux.mk
@@ -72,6 +72,17 @@ endif
 ifeq ($(CPU_ARCH),x86)
 PLATFORM_FLAGS		+= -mno-486 -DLINUX1_2 -Di386
 endif
+ifeq ($(CPU_ARCH),m68k)
+#
+# gcc on Linux/m68k either has a bug or triggers a code-sequence
+# bug in the 68060 which causes gcc to crash.  The simplest way to
+# avoid this is to enable a minimum level of optimization.
+#
+ifndef BUILD_OPT
+OPTIMIZER		+= -O
+endif
+PLATFORM_FLAGS		+= -m68020-40 -DLINUX1_2
+endif
 
 ifeq ($(OS_RELEASE),2.0)
 PLATFORM_FLAGS		+= -DLINUX2_0
diff --git a/pr/include/md/_linux.cfg b/pr/include/md/_linux.cfg
index 5d0be4de..a269025c 100644
--- a/pr/include/md/_linux.cfg
+++ b/pr/include/md/_linux.cfg
@@ -116,7 +116,51 @@
 #define PR_BYTES_PER_WORD_LOG2  3
 #define PR_BYTES_PER_DWORD_LOG2 3
 
-#else
+#elif defined(__mc68000__)
+
+#undef  IS_LITTLE_ENDIAN
+#define IS_BIG_ENDIAN 1
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     2
+#define PR_ALIGN_OF_LONG    2
+#define PR_ALIGN_OF_INT64   2
+#define PR_ALIGN_OF_FLOAT   2
+#define PR_ALIGN_OF_DOUBLE  2
+#define PR_ALIGN_OF_POINTER 2
+
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#else /* x86 */
 
 #define IS_LITTLE_ENDIAN 1
 #undef  IS_BIG_ENDIAN
diff --git a/pr/include/md/_linux.h b/pr/include/md/_linux.h
index 30649ebb..03b526e3 100644
--- a/pr/include/md/_linux.h
+++ b/pr/include/md/_linux.h
@@ -31,6 +31,8 @@
 #define _PR_SI_ARCHITECTURE "ppc"
 #elif defined(__alpha)
 #define _PR_SI_ARCHITECTURE "alpha"
+#elif defined(__mc68000__)
+#define _PR_SI_ARCHITECTURE "m68k"
 #else
 #define _PR_SI_ARCHITECTURE "x86"
 #endif
@@ -97,6 +99,22 @@ extern void _MD_CleanupBeforeExit(void);
 /* XXX not sure if this is correct, or maybe it should be 17? */
 #define PR_NUM_GCREGS 9
 
+#elif defined(__mc68000__)
+/* m68k based Linux */
+
+/*
+ * On the m68k, glibc still uses the old style sigjmp_buf, even
+ * in glibc 2.0.7.
+ */
+#if defined(__GLIBC__) && __GLIBC__ >= 2
+#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp
+#else
+#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp
+#endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */
+
+/* XXX not sure if this is correct, or maybe it should be 17? */
+#define PR_NUM_GCREGS 9
+
 #else
 /* Intel based Linux */
 #if defined(__GLIBC__) && __GLIBC__ >= 2