From patchwork series 394649

https://patchwork.ozlabs.org//project/linuxppc-dev/list/?series=394649

Author: Fox Snowpatch

arch/powerpc/kernel/prom_init_check.sh

@@ -72,10 +72,10 @@ do
 
 	# ignore register save/restore funcitons
 	case $UNDEF in
-	_restgpr_*|_restgpr0_*|_rest32gpr_*)
+	_restgpr_*|_restgpr0_*|_restgpr1_*|_rest32gpr_*)
 		OK=1
 		;;
-	_savegpr_*|_savegpr0_*|_save32gpr_*)
+	_savegpr_*|_savegpr0_*|_restgpr0_*|_save32gpr_*)
 		OK=1
 		;;
 	esac

arch/powerpc/lib/crtsavres.S

@@ -3,6 +3,7 @@
  *
  *   Copyright (C) 1995, 1996, 1998, 2000, 2001 Free Software Foundation, Inc.
  *   Copyright 2008 Freescale Semiconductor, Inc.
+ *   Copyright 2024 Raptor Engineering, LLC
  *   Written By Michael Meissner
  *
  * Based on gcc/config/rs6000/crtsavres.asm from gcc
@@ -435,6 +436,127 @@ _restgpr0_31:
 	mtlr	r0
 	blr
 
+.globl	_savegpr1_14
+_savegpr1_14:
+	std	r14,-144(r12)
+.globl	_savegpr1_15
+_savegpr1_15:
+	std	r15,-136(r12)
+.globl	_savegpr1_16
+_savegpr1_16:
+	std	r16,-128(r12)
+.globl	_savegpr1_17
+_savegpr1_17:
+	std	r17,-120(r12)
+.globl	_savegpr1_18
+_savegpr1_18:
+	std	r18,-112(r12)
+.globl	_savegpr1_19
+_savegpr1_19:
+	std	r19,-104(r12)
+.globl	_savegpr1_20
+_savegpr1_20:
+	std	r20,-96(r12)
+.globl	_savegpr1_21
+_savegpr1_21:
+	std	r21,-88(r12)
+.globl	_savegpr1_22
+_savegpr1_22:
+	std	r22,-80(r12)
+.globl	_savegpr1_23
+_savegpr1_23:
+	std	r23,-72(r12)
+.globl	_savegpr1_24
+_savegpr1_24:
+	std	r24,-64(r12)
+.globl	_savegpr1_25
+_savegpr1_25:
+	std	r25,-56(r12)
+.globl	_savegpr1_26
+_savegpr1_26:
+	std	r26,-48(r12)
+.globl	_savegpr1_27
+_savegpr1_27:
+	std	r27,-40(r12)
+.globl	_savegpr1_28
+_savegpr1_28:
+	std	r28,-32(r12)
+.globl	_savegpr1_29
+_savegpr1_29:
+	std	r29,-24(r12)
+.globl	_savegpr1_30
+_savegpr1_30:
+	std	r30,-16(r12)
+.globl	_savegpr1_31
+_savegpr1_31:
+	std	r31,-8(r12)
+	std	r0,16(r12)
+	blr
+
+.globl	_restgpr1_14
+_restgpr1_14:
+	ld	r14,-144(r12)
+.globl	_restgpr1_15
+_restgpr1_15:
+	ld	r15,-136(r12)
+.globl	_restgpr1_16
+_restgpr1_16:
+	ld	r16,-128(r12)
+.globl	_restgpr1_17
+_restgpr1_17:
+	ld	r17,-120(r12)
+.globl	_restgpr1_18
+_restgpr1_18:
+	ld	r18,-112(r12)
+.globl	_restgpr1_19
+_restgpr1_19:
+	ld	r19,-104(r12)
+.globl	_restgpr1_20
+_restgpr1_20:
+	ld	r20,-96(r12)
+.globl	_restgpr1_21
+_restgpr1_21:
+	ld	r21,-88(r12)
+.globl	_restgpr1_22
+_restgpr1_22:
+	ld	r22,-80(r12)
+.globl	_restgpr1_23
+_restgpr1_23:
+	ld	r23,-72(r12)
+.globl	_restgpr1_24
+_restgpr1_24:
+	ld	r24,-64(r12)
+.globl	_restgpr1_25
+_restgpr1_25:
+	ld	r25,-56(r12)
+.globl	_restgpr1_26
+_restgpr1_26:
+	ld	r26,-48(r12)
+.globl	_restgpr1_27
+_restgpr1_27:
+	ld	r27,-40(r12)
+.globl	_restgpr1_28
+_restgpr1_28:
+	ld	r28,-32(r12)
+.globl	_restgpr1_29
+_restgpr1_29:
+	ld	r0,16(r12)
+	ld	r29,-24(r12)
+	mtlr	r0
+	ld	r30,-16(r12)
+	ld	r31,-8(r12)
+	blr
+
+.globl	_restgpr1_30
+_restgpr1_30:
+	ld	r30,-16(r12)
+.globl	_restgpr1_31
+_restgpr1_31:
+	ld	r0,16(r12)
+	ld	r31,-8(r12)
+	mtlr	r0
+	blr
+
 #ifdef CONFIG_ALTIVEC
 /* Called with r0 pointing just beyond the end of the vector save area.  */
 
@@ -540,6 +662,128 @@ _restvr_31:
 
 #endif /* CONFIG_ALTIVEC */
 
+#ifdef CONFIG_PPC_FPU
+
+.globl	_savefpr_14
+_savefpr_14:
+	stfd f14,-144(r1)
+.globl	_savefpr_15
+_savefpr_15:
+	stfd f15,-136(r1)
+.globl	_savefpr_16
+_savefpr_16:
+	stfd f16,-128(r1)
+.globl	_savefpr_17
+_savefpr_17:
+	stfd f17,-120(r1)
+.globl	_savefpr_18
+_savefpr_18:
+	stfd f18,-112(r1)
+.globl	_savefpr_19
+_savefpr_19:
+	stfd f19,-104(r1)
+.globl	_savefpr_20
+_savefpr_20:
+	stfd f20,-96(r1)
+.globl	_savefpr_21
+_savefpr_21:
+	stfd f21,-88(r1)
+.globl	_savefpr_22
+_savefpr_22:
+	stfd f22,-80(r1)
+.globl	_savefpr_23
+_savefpr_23:
+	stfd f23,-72(r1)
+.globl	_savefpr_24
+_savefpr_24:
+	stfd f24,-64(r1)
+.globl	_savefpr_25
+_savefpr_25:
+	stfd f25,-56(r1)
+.globl	_savefpr_26
+_savefpr_26:
+	stfd f26,-48(r1)
+.globl	_savefpr_27
+_savefpr_27:
+	stfd f27,-40(r1)
+.globl	_savefpr_28
+_savefpr_28:
+	stfd f28,-32(r1)
+.globl	_savefpr_29
+_savefpr_29:
+	stfd f29,-24(r1)
+.globl	_savefpr_30
+_savefpr_30:
+	stfd f30,-16(r1)
+.globl	_savefpr_31
+_savefpr_31:
+	stfd f31,-8(r1)
+	std r0, 16(r1)
+	blr
+
+.globl	_restfpr_14
+_restfpr_14:
+	lfd f14,-144(r1)
+.globl	_restfpr_15
+_restfpr_15:
+	lfd f15,-136(r1)
+.globl	_restfpr_16
+_restfpr_16:
+	lfd f16,-128(r1)
+.globl	_restfpr_17
+_restfpr_17:
+	lfd f17,-120(r1)
+.globl	_restfpr_18
+_restfpr_18:
+	lfd f18,-112(r1)
+.globl	_restfpr_19
+_restfpr_19:
+	lfd f19,-104(r1)
+.globl	_restfpr_20
+_restfpr_20:
+	lfd f20,-96(r1)
+.globl	_restfpr_21
+_restfpr_21:
+	lfd f21,-88(r1)
+.globl	_restfpr_22
+_restfpr_22:
+	lfd f22,-80(r1)
+.globl	_restfpr_23
+_restfpr_23:
+	lfd f23,-72(r1)
+.globl	_restfpr_24
+_restfpr_24:
+	lfd f24,-64(r1)
+.globl	_restfpr_25
+_restfpr_25:
+	lfd f25,-56(r1)
+.globl	_restfpr_26
+_restfpr_26:
+	lfd f26,-48(r1)
+.globl	_restfpr_27
+_restfpr_27:
+	lfd f27,-40(r1)
+.globl	_restfpr_28
+_restfpr_28:
+	lfd f28,-32(r1)
+.globl	_restfpr_29
+_restfpr_29:
+	ld r0, 16(r1)
+	lfd f29,-24(r1)
+	mtlr r0
+	lfd f30,-16(r1)
+	lfd f31,-8(r1)
+	blr
+.globl	_restfpr_30
+_restfpr_30:
+	lfd f30,-16(r1)
+.globl	_restfpr_31
+_restfpr_31:
+	ld r0, 16(r1)
+	lfd f31,-8(r1)
+
+#endif /* CONFIG_PPC_FPU */
+
 #endif /* CONFIG_PPC64 */
 
 #endif

scripts/mod/modpost.c

@@ -597,8 +597,12 @@ static int ignore_undef_symbol(struct elf_info *info, const char *symname)
 		/* Special register function linked on all modules during final link of .ko */
 		if (strstarts(symname, "_restgpr0_") ||
 		    strstarts(symname, "_savegpr0_") ||
+		    strstarts(symname, "_restgpr1_") ||
+		    strstarts(symname, "_savegpr1_") ||
 		    strstarts(symname, "_restvr_") ||
 		    strstarts(symname, "_savevr_") ||
+		    strstarts(symname, "_restfpr_") ||
+		    strstarts(symname, "_savefpr_") ||
 		    strcmp(symname, ".TOC.") == 0)
 			return 1;