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1.1
date	2026.08.12.23.20.23;	author js;	state Exp;
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commitid	cQiVpPvIMBbe7pRG;


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1.1
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@cross/ppc-morphos-gcc: Import restore_r13-insn.diff
@
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@Make restore_r13 an insn with properly declared registers and clobbers.

--- gcc/config/rs6000/rs6000.md.orig	2026-08-12 21:46:35.039143013 +0000
+++ gcc/config/rs6000/rs6000.md
@@@@ -201,6 +201,7 @@@@
    UNSPECV_SPEC_BARRIER         ; Speculation barrier
    UNSPECV_PLT16_LO
    UNSPECV_PLT_PCREL
+   UNSPECV_RESTORE_R13
   ])
 
 ; The three different kinds of epilogue.
@@@@ -11341,6 +11342,16 @@@@
   [(set (match_dup 0) (high:P (match_dup 1)))
    (set (match_dup 0) (lo_sum:P (match_dup 0) (match_dup 1)))])
 
+
+;; baserel - inspired by load_toc_v4_pic_si
+(define_insn "restore_r13"
+  [(set (reg:SI 13)
+	(unspec_volatile:SI [(reg:SI 12)] UNSPECV_RESTORE_R13))
+   (clobber (reg:SI LR_REGNO))]
+  "TARGET_BASEREL"
+  "bl __restore_r13"
+  [(set_attr "type" "branch")])
+
 ;;
 ;;
 ;;
--- gcc/config/rs6000/rs6000.cc.orig	2026-08-12 22:19:12.210389558 +0000
+++ gcc/config/rs6000/rs6000.cc
@@@@ -10224,6 +10224,9 @@@@ rs6000_conditional_register_usage (void)
   if (fixed_regs[2] && (DEFAULT_ABI == ABI_AIX || DEFAULT_ABI == ABI_ELFv2))
     call_used_regs[2] = 0;
 
+  if (TARGET_BASEREL)
+    fixed_regs[13] = call_used_regs[13] = 1;
+
   if (DEFAULT_ABI == ABI_V4 && flag_pic == 2)
     fixed_regs[RS6000_PIC_OFFSET_TABLE_REGNUM] = 1;
 
--- gcc/config/rs6000/rs6000-logue.cc.orig	2026-08-12 22:00:17.645715902 +0000
+++ gcc/config/rs6000/rs6000-logue.cc
@@@@ -3955,12 +3955,7 @@@@ rs6000_emit_prologue (void)
   if (info->baserel_save_p && TARGET_BASEREL)
     {
       /* Call __restore_r13 */
-      rtx restore_r13_ref = gen_rtx_SYMBOL_REF (Pmode, "__restore_r13");
-      SYMBOL_REF_FLAGS (restore_r13_ref) |= (SYMBOL_FLAG_LOCAL | SYMBOL_FLAG_FUNCTION);
-
-      emit_call_insn (gen_call (gen_rtx_MEM (SImode, restore_r13_ref), const0_rtx, const0_rtx));
-
-      emit_insn (gen_blockage ());
+      emit_insn (gen_restore_r13 ());
     }
 #endif
 
@