patches/gcc/3.4.6/190-all_sh-pr16665-fix.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Tue Oct 14 17:42:10 2008 +0000 (2008-10-14)
changeset 929 7c958fb04f28
parent 402 197e1b49586e
permissions -rw-r--r--
Sample config for e500v2 toolchain

On Tuesday 14 October 2008 17:05:31 Nate Case wrote:
> This is a sample config file for Freescale e500v2 processors (e.g.,
> MPC8548, MPC8572). It uses eglibc (for e500/SPE patches) and a recent
> gcc (4.3.1, for e500v2 DPFP support) and will generate appropriate
> dual-precision floating point instructions by default.
>
> Note: If building a Linux kernel with this toolchain, you will want to
> make sure -mno-spe AND -mspe=no are passed to gcc to prevent SPE
> ABI/instructions from getting into the kernel (which is currently
> unsupported). At this time, the kernel build system only passes
> -mno-spe by default (this should be fixed soon hopefully).
>
> A binutils snapshot is used to fix a bug present in 2.18 preventing
> U-Boot from being compiled (CodeSourcery issue #2297: internal.h
> (ELF_IS_SECTION_IN_SEGMENT): Adjust to cope with segments at the end of
> memory).

Obsoletes the powerpc-unknown-linux-gnuspe sample, so remove it.

/trunk/samples/powerpc-e500v2-linux-gnuspe/crosstool.config | 307 307 0 0 +++++++++++++++++++
1 file changed, 307 insertions(+)
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diff -durN gcc-3.4.6.orig/gcc/config/sh/sh.c gcc-3.4.6/gcc/config/sh/sh.c
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--- gcc-3.4.6.orig/gcc/config/sh/sh.c	2004-09-03 08:51:30.000000000 +0200
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+++ gcc-3.4.6/gcc/config/sh/sh.c	2007-08-15 23:01:48.000000000 +0200
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@@ -9107,6 +9107,15 @@
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     }
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   this = FUNCTION_ARG (cum, Pmode, ptr_type_node, 1);
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+  /* In PIC case, we set PIC register to compute the target address.  We
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+     can use a scratch register to save and restore the original value  
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+     except for SHcompact.  For SHcompact, use stack.  */
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+  if (flag_pic && TARGET_SHCOMPACT)
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+    {
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+      push (PIC_OFFSET_TABLE_REGNUM);
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+      emit_insn (gen_GOTaddr2picreg ());
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+    }
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+
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   /* For SHcompact, we only have r0 for a scratch register: r1 is the
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      static chain pointer (even if you can't have nested virtual functions
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      right now, someone might implement them sometime), and the rest of the
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@@ -9189,8 +9198,24 @@
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       assemble_external (function);
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       TREE_USED (function) = 1;
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     }
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+  /* We can use scratch1 to save and restore the original value of
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+     PIC register except for SHcompact.  */
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+  if (flag_pic && ! TARGET_SHCOMPACT)
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+    {
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+      emit_move_insn (scratch1,
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+		      gen_rtx_REG (Pmode, PIC_OFFSET_TABLE_REGNUM));
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+      emit_insn (gen_GOTaddr2picreg ());
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+    }
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   funexp = XEXP (DECL_RTL (function), 0);
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   emit_move_insn (scratch2, funexp);
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+  if (flag_pic)
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+    {
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+      if (! TARGET_SHCOMPACT)
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+	emit_move_insn (gen_rtx_REG (Pmode, PIC_OFFSET_TABLE_REGNUM),
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+			scratch1);
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+      else
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+	pop (PIC_OFFSET_TABLE_REGNUM);
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+    }
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   funexp = gen_rtx_MEM (FUNCTION_MODE, scratch2);
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   sibcall = emit_call_insn (gen_sibcall (funexp, const0_rtx, NULL_RTX));
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   SIBLING_CALL_P (sibcall) = 1;