Hi List,
I think that the problem is the same of this:
http://gcc.gnu.org/ml/gcc-patches/2008-06/msg00094.html
Starting form the patch proposed in the post above, I produced (with few
changes) the attached patch for gcc.4.3.1.
ciao
luigi
On dom, 2008-06-22 at 12:24 +0200, Luigi 'Comio' Mantellini wrote:
> Dear All,
>
> I'm trying to compile the e2fs progs for a coldfire 547x cpu. I'm using the
> gcc4.3.1 compiler.
> I have this error and I don't understand what can be wrong:
>
> make[5]: Entering directory
> `/mnt/devel/openwrt/OpenWRT.git/build_dir/m68k/e2fsprogs-1.39'
> make[6]: Entering directory
> `/mnt/devel/openwrt/OpenWRT.git/build_dir/m68k/e2fsprogs-1.39'
> make[6]: `lib/ext2fs/ext2_types.h' is up to date.
> make[6]: Leaving directory
> `/mnt/devel/openwrt/OpenWRT.git/build_dir/m68k/e2fsprogs-1.39'
> make[6]: Entering directory
> `/mnt/devel/openwrt/OpenWRT.git/build_dir/m68k/e2fsprogs-1.39'
> make[6]: `lib/blkid/blkid_types.h' is up to date.
> make[6]: Leaving directory
> `/mnt/devel/openwrt/OpenWRT.git/build_dir/m68k/e2fsprogs-1.39'
> make[6]: Entering directory
> `/mnt/devel/openwrt/OpenWRT.git/build_dir/m68k/e2fsprogs-1.39'
> make[6]: `lib/uuid/uuid_types.h' is up to date.
> make[6]: Leaving directory
> `/mnt/devel/openwrt/OpenWRT.git/build_dir/m68k/e2fsprogs-1.39'
> making all in e2fsck
> make[6]: Entering directory
> `/mnt/devel/openwrt/OpenWRT.git/build_dir/m68k/e2fsprogs-1.39/e2fsck'
> LD e2fsck.static
> /mnt/devel/openwrt/OpenWRT.git/staging_dir/toolchain-m68k_gcc4.3.1/lib/gcc/m68k-linux-uclibc/4.3.1/libgcc.a(_eqdf2.o):
> In function `__eqdf2':
> /mnt/devel/openwrt/OpenWRT.git/build_dir/toolchain-m68k_gcc4.3.1/gcc-4.3.1/libgcc/../gcc/config/m68k/lb1sf68.asm:3895:
> relocation truncated to fit: R_68K_PC16 against symbol `__cmpdf2_internal'
> defined in .text section in
> /mnt/devel/openwrt/OpenWRT.git/staging_dir/toolchain-m68k_gcc4.3.1/lib/gcc/m68k-linux-uclibc/4.3.1/libgcc.a(_double.o)
> /mnt/devel/openwrt/OpenWRT.git/staging_dir/toolchain-m68k_gcc4.3.1/lib/gcc/m68k-linux-uclibc/4.3.1/libgcc.a(_nedf2.o):
> In function `__nedf2':
> /mnt/devel/openwrt/OpenWRT.git/build_dir/toolchain-m68k_gcc4.3.1/gcc-4.3.1/libgcc/../gcc/config/m68k/lb1sf68.asm:3911:
> relocation truncated to fit: R_68K_PC16 against symbol `__cmpdf2_internal'
> defined in .text section in
> /mnt/devel/openwrt/OpenWRT.git/staging_dir/toolchain-m68k_gcc4.3.1/lib/gcc/m68k-linux-uclibc/4.3.1/libgcc.a(_double.o)
> /mnt/devel/openwrt/OpenWRT.git/staging_dir/toolchain-m68k_gcc4.3.1/lib/gcc/m68k-linux-uclibc/4.3.1/libgcc.a(_gedf2.o):
> In function `__gedf2':
> /mnt/devel/openwrt/OpenWRT.git/build_dir/toolchain-m68k_gcc4.3.1/gcc-4.3.1/libgcc/../gcc/config/m68k/lb1sf68.asm:3943:
> relocation truncated to fit: R_68K_PC16 against symbol `__cmpdf2_internal'
> defined in .text section in
> /mnt/devel/openwrt/OpenWRT.git/staging_dir/toolchain-m68k_gcc4.3.1/lib/gcc/m68k-linux-uclibc/4.3.1/libgcc.a(_double.o)
> /mnt/devel/openwrt/OpenWRT.git/staging_dir/toolchain-m68k_gcc4.3.1/lib/gcc/m68k-linux-uclibc/4.3.1/libgcc.a(_ltdf2.o):
> In function `__ltdf2':
> /mnt/devel/openwrt/OpenWRT.git/build_dir/toolchain-m68k_gcc4.3.1/gcc-4.3.1/libgcc/../gcc/config/m68k/lb1sf68.asm:3959:
> relocation truncated to fit: R_68K_PC16 against symbol `__cmpdf2_internal'
> defined in .text section in
> /mnt/devel/openwrt/OpenWRT.git/staging_dir/toolchain-m68k_gcc4.3.1/lib/gcc/m68k-linux-uclibc/4.3.1/libgcc.a(_double.o)
> collect2: ld returned 1 exit status
> make[6]: *** [e2fsck.static] Error 1
> make[6]: Leaving directory
> `/mnt/devel/openwrt/OpenWRT.git/build_dir/m68k/e2fsprogs-1.39/e2fsck'
> make[5]: *** [all-progs-recursive] Error 1
> make[5]: Leaving directory
> `/mnt/devel/openwrt/OpenWRT.git/build_dir/m68k/e2fsprogs-1.39'
> make[4]: *** [all] Error 2
> make[4]: Leaving directory
> `/mnt/devel/openwrt/OpenWRT.git/build_dir/m68k/e2fsprogs-1.39'
> make[3]: ***
> [/mnt/devel/openwrt/OpenWRT.git/build_dir/m68k/e2fsprogs-1.39/.built] Error 2
> make[3]: Leaving directory `/mnt/devel/openwrt/OpenWRT.git/package/e2fsprogs'
> make[2]: *** [package/e2fsprogs/compile] Error 2
> make[2]: Leaving directory `/mnt/devel/openwrt/OpenWRT.git'
> make[1]: ***
> [/mnt/devel/openwrt/OpenWRT.git/staging_dir/m68k/stamp/.package_compile]
> Error 2
> make[1]: Leaving directory `/mnt/devel/openwrt/OpenWRT.git'
> make: *** [world] Error 2
>
> To complete the picture, I'm using an OpenWRT building-environment with some
> patch in order to compile Gcc4.3.1 (
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36559), binutils 2.18 and
> uClibc0.9.29. If needed, I can provide any additional information.
>
> Any ideas? What can I check to understand and resolve this issue?
>
> Thanks in advance for any suggestion.
>
>
> luigi
>
--
______ Luigi Mantellini
.'______'. R&D - Software
(.' '.) Industrie Dial Face S.p.A.
( :=----=: ) Via Canzo, 4
('.______.') 20068 Peschiera Borromeo (MI), Italy
'.______.' Tel.: +39 02 5167 2813
Fax: +39 02 5167 2459
Ind. Dial Face Email: [EMAIL PROTECTED]
www.idf-hit.com GPG fingerprint: 3DD1 7B71 FBDF 6376 1B4A
B003 175F E979 907E 1650
2008-06-03 Joseph Myers <[EMAIL PROTECTED]>
Maxim Kuvyrkov <[EMAIL PROTECTED]>
* config/m68k/m68k.opt (mxgot): New option.
* config/m68k/m68k.c (legitimize_pic_address): Handle -mxgot.
(m68k_output_addr_const_extra): New.
* config/m68k/m68k.h (OUTPUT_ADDR_CONST_EXTRA): New.
* config/m68k/m68k-protos.h (m68k_output_addr_const_extra): Declare.
* config/m68k/m68k.md (UNSPEC_GOTOFF): Define.
* doc/invoke.texi (M680x0 Options): Document -mxgot.
testsuite:
2008-06-03 Joseph Myers <[EMAIL PROTECTED]>
Maxim Kuvyrkov <[EMAIL PROTECTED]>
* gcc.target/m68k/xgot-1.c: New test.
Index: gcc-4.3.1/gcc/doc/invoke.texi
===================================================================
--- gcc-4.3.1/gcc/doc/invoke.texi (revision 136283)
+++ gcc-4.3.1/gcc/doc/invoke.texi (working copy)
@@ -607,7 +607,8 @@
-mnobitfield -mrtd -mno-rtd -mdiv -mno-div -mshort @gol
-mno-short -mhard-float -m68881 -msoft-float -mpcrel @gol
-malign-int -mstrict-align -msep-data -mno-sep-data @gol
--mshared-library-id=n -mid-shared-library -mno-id-shared-library}
+-mshared-library-id=n -mid-shared-library -mno-id-shared-library @gol
+-mxgot -mno-xgot}
@emph{M68hc1x Options}
@gccoptlist{-m6811 -m6812 -m68hc11 -m68hc12 -m68hcs12 @gol
@@ -11776,6 +11777,38 @@
other values will force the allocation of that number to the current
library but is no more space or time efficient than omitting this option.
[EMAIL PROTECTED] -mxgot
[EMAIL PROTECTED] -mno-xgot
[EMAIL PROTECTED] mxgot
[EMAIL PROTECTED] mno-xgot
+When generating position-independent code for ColdFire, generate code
+that works if the GOT has more than 8192 entries. This code is
+larger and slower than code generated without this option. On M680x0
+processors, this option is not needed; @option{-fPIC} suffices.
+
+GCC normally uses a single instruction to load values from the [EMAIL PROTECTED]
+While this is relatively efficient, it only works if the GOT
+is smaller than about 64k. Anything larger causes the linker
+to report an error such as:
+
[EMAIL PROTECTED] relocation truncated to fit (ColdFire)
[EMAIL PROTECTED]
+relocation truncated to fit: R_68K_GOT16O foobar
[EMAIL PROTECTED] smallexample
+
+If this happens, you should recompile your code with @option{-mxgot}.
+It should then work with very large GOTs. However, code generated with
[EMAIL PROTECTED] is less efficient, since it takes 4 instructions to fetch
+the value of a global symbol.
+
+Note that some linkers, including newer versions of the GNU linker,
+can create multiple GOTs and sort GOT entries. If you have such a linker,
+you should only need to use @option{-mxgot} when compiling a single
+object file that accesses more than 8192 GOT entries. Very few do.
+
+These options have no effect unless GCC is generating
+position-independent code.
+
@end table
@node M68hc1x Options
Index: gcc-4.3.1/gcc/testsuite/gcc.target/m68k/xgot-1.c
===================================================================
--- gcc-4.3.1/gcc/testsuite/gcc.target/m68k/xgot-1.c (revision 0)
+++ gcc-4.3.1/gcc/testsuite/gcc.target/m68k/xgot-1.c (revision 0)
@@ -0,0 +1,11 @@
+/* { dg-do compile } */
+/* { dg-options "-fpic -mxgot" } */
+/* { dg-final { scan-assembler "[EMAIL PROTECTED],\%\[ad\]\[0-7\]" } } */
+
+extern int foo;
+
+int
+bar (void)
+{
+ return foo;
+}
Index: gcc-4.3.1/gcc/config/m68k/m68k.md
===================================================================
--- gcc-4.3.1/gcc/config/m68k/m68k.md.orig 2007-11-06 17:52:17.000000000 +0100
+++ gcc-4.3.1/gcc/config/m68k/m68k.md 2008-06-22 13:15:38.000000000 +0200
@@ -115,6 +115,8 @@
(UNSPEC_COS 2)
(UNSPEC_GOT 3)
(UNSPEC_IB 4)
+ (UNSPEC_TIE 5)
+ (UNSPEC_GOTOFF 6)
])
;; UNSPEC_VOLATILE usage:
===================================================================
--- gcc-4.3.1/gcc/config/m68k/m68k-protos.h (revision 136283)
+++ gcc-4.3.1/gcc/config/m68k/m68k-protos.h (working copy)
@@ -50,6 +50,7 @@
extern int standard_68881_constant_p (rtx);
extern void print_operand_address (FILE *, rtx);
extern void print_operand (FILE *, rtx, int);
+extern bool m68k_output_addr_const_extra (FILE *, rtx);
extern void notice_update_cc (rtx, rtx);
extern bool m68k_legitimate_base_reg_p (rtx, bool);
extern bool m68k_legitimate_index_reg_p (rtx, bool);
Index: gcc-4.3.1/gcc/config/m68k/m68k.opt
===================================================================
--- gcc-4.3.1/gcc/config/m68k/m68k.opt (revision 136283)
+++ /m68k.opt (working copy)
@@ -178,3 +178,7 @@
mtune=
Target RejectNegative Joined
Tune for the specified target CPU or architecture
+
+mxgot
+Target Report Mask(XGOT)
+Support more than 8192 GOT entries on ColdFire
--- gcc-4.3.1/gcc/config/m68k/m68k.c.orig 2007-11-06 17:52:17.000000000 +0100
+++ gcc-4.3.1/gcc/config/m68k/m68k.c 2008-06-22 13:24:03.000000000 +0200
@@ -2029,9 +2029,32 @@
{
gcc_assert (reg);
+
+ if (TARGET_COLDFIRE && TARGET_XGOT)
+ /* When compiling with -mxgot switch the code for the above
+ example will look like this:
+
+ movel a5, a0
+ addl [EMAIL PROTECTED], a0
+ movel a0@, a0
+ movel #12345, a0@ */
+ {
+ rtx pic_offset;
+
+ /* Wrap ORIG in UNSPEC_GOTOFF to tip m68k_output_addr_const_extra
+ to put @GOT after reference. */
+ pic_offset = gen_rtx_UNSPEC (Pmode, gen_rtvec (1, orig),
+ UNSPEC_GOTOFF);
+ pic_offset = gen_rtx_CONST (Pmode, pic_offset);
+ emit_move_insn (reg, pic_offset);
+ emit_insn (gen_addsi3 (reg, reg, pic_offset_table_rtx));
+ pic_ref = gen_rtx_MEM (Pmode, reg);
+ }
+ else
pic_ref = gen_rtx_MEM (Pmode,
gen_rtx_PLUS (Pmode,
pic_offset_table_rtx, orig));
+
current_function_uses_pic_offset_table = 1;
MEM_READONLY_P (pic_ref) = 1;
emit_move_insn (reg, pic_ref);
@@ -3839,6 +3862,20 @@
}
}
+/* m68k implementation of OUTPUT_ADDR_CONST_EXTRA. */
+
+bool
+m68k_output_addr_const_extra (FILE *file, rtx x)
+{
+ if (GET_CODE (x) != UNSPEC || XINT (x, 1) != UNSPEC_GOTOFF)
+ return false;
+
+ output_addr_const (file, XVECEXP (x, 0, 0));
+ /* ??? What is the non-MOTOROLA syntax? */
+ fputs ("@GOT", file);
+ return true;
+}
+
/* A C compound statement to output to stdio stream STREAM the
assembler syntax for an instruction operand that is a memory
Index: gcc-4.3.1/gcc/config/m68k/m68k.h
===================================================================
--- gcc-4.3.1/gcc/config/m68k/m68k.h (revision 136283)
+++ gcc-4.3.1/gcc/config/m68k/m68k.h (working copy)
@@ -1079,6 +1079,12 @@
#define PRINT_OPERAND_ADDRESS(FILE, ADDR) print_operand_address (FILE, ADDR)
+#define OUTPUT_ADDR_CONST_EXTRA(FILE, X, FAIL) \
+do { \
+ if (! m68k_output_addr_const_extra (FILE, (X))) \
+ goto FAIL; \
+} while (0);
+
/* Values used in the MICROARCH argument to M68K_DEVICE. */
enum uarch_type
{
