[linuxsh-dev] gcc-3.0+sh4

[Bryan R. <br...@ix...>]

Hello,

Is anyone successfully using gcc-3.0 with the sh4? I have
tried building several toolchains based on it, and they
all compile the 2.4.5 kernel succesfully (after a minor
xtime patch which I've included below). However, I can't
get gcc-3.0 to produce ANY working user code (not even
hello1-20000824!)

If you are using gcc-3.0 stable, or a recent
gcc-3.0pre snapshot with the sh4, I would GREATLY
appreciate build instructions, as well as what version
of binutils, the kernel, and glibc you are using.

Lots of patches are used in the instructions here:
http://linuxsh.sourceforge.net/docs/abe/20010320-gcc2.97/README_E.php3
and most of them won't apply to 3.0. Based on the 2.97
patches, I've created a very minimal gcc-3.0 patch:

--- gcc.orig/gcc/config/sh/linux.h  Mon Jun 11 20:13:39 2001
+++ gcc/gcc/config/sh/linux.h       Mon Jun 11 20:17:00 2001
@@ -43,9 +43,9 @@
  #define CPP_SPEC \
    "%{mb:-D__BIG_ENDIAN__} \
     %{!mb:-D__LITTLE_ENDIAN__} \
-   %{m3e:-D__SH3E__} \
     %{m4:-D__SH4__} \
-   %{!m3e:%{!m4:-D__SH3__ -D__sh3__}} \
+   %{!m4:%{m4-nofpu:-D__SH4__ -D__SH4_NOFPU__}} \
+   %{!m4:%{!m4-nofpu:-D__SH3__ -D__sh3__}} \
     %{fPIC:-D__PIC__ -D__pic__} \
     %{fpic:-D__PIC__ -D__pic__} \
     %{posix:-D_POSIX_SOURCE} \
@@ -59,11 +59,11 @@

  #undef CC1_SPEC
  #define CC1_SPEC \
-  "-musermode %{!mb:-ml} %{!m3e:%{!m4:-m3}}"
+  "-musermode %{!mb:-ml} %{!m4:%{!m4-nofpu:-m3}}"

  #undef CC1PLUS_SPEC
  #define CC1PLUS_SPEC \
-  "-musermode %{!mb:-ml} %{!m3e:%{!m4:-m3}}"
+  "-musermode %{!mb:-ml} %{!m4:%{!m4-nofpu:-m3}}"

  #undef LINK_SPEC
  #define LINK_SPEC \
@@ -71,7 +71,7 @@
     %{shared:-shared} \
     %{!static: \
       %{rdynamic:-export-dynamic} \
-     %{!dynamic-linker:-dynamic-linker /lib/ld.so.1} \
+     %{!dynamic-linker:-dynamic-linker /lib/ld-linux.so.2} \
       %{!rpath:-rpath /lib}} \
     %{static:-static}"


--- gcc.orig/gcc/config/sh/t-linux      Mon Jun 11 21:27:46 2001
+++ gcc/gcc/config/sh/t-linux   Mon Jun 11 21:29:05 2001
@@ -4,7 +4,7 @@
    _movstr_i4 _mulsi3 _sdivsi3 _sdivsi3_i4 _udivsi3 _udivsi3_i4 
_set_fpscr \
    _ic_invalidate

-MULTILIB_OPTIONS= mb m3e/m4
+MULTILIB_OPTIONS= m4
  MULTILIB_DIRNAMES=
  MULTILIB_MATCHES =

But it doesn't work for user-mode stuff. :(

And here's the minor gcc-3.0 build patch for Linux 2.4.5:

--- include/linux/sched-orig.h  Mon Jun 18 18:45:18 2001
+++ include/linux/sched.h       Mon Jun 18 18:45:27 2001
@@ -537,7 +537,7 @@
  extern unsigned long volatile jiffies;
  extern unsigned long itimer_ticks;
  extern unsigned long itimer_next;
-extern struct timeval xtime;
+extern volatile struct timeval xtime;
  extern void do_timer(struct pt_regs *);

  extern unsigned int * prof_buffer;

Suggestions? (Thanks in advance)

Regards,

Bryan

-- 
Bryan Rittmeyer
mailto:br...@ix...