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git://projects.qi-hardware.com/openwrt-xburst.git
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447f925ff9
git-svn-id: svn://svn.openwrt.org/openwrt/trunk/openwrt@2695 3c298f89-4303-0410-b956-a3cf2f4a3e73
44 lines
1.6 KiB
Diff
44 lines
1.6 KiB
Diff
--- gcc/gcc/config/sh/sh.c
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+++ gcc/gcc/config/sh/sh.c
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@@ -9106,6 +9106,15 @@ sh_output_mi_thunk (FILE *file, tree thu
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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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@@ -9188,8 +9197,24 @@ sh_output_mi_thunk (FILE *file, tree thu
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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;
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