mirror of
https://github.com/linuxboot/heads.git
synced 2025-01-07 05:28:46 +00:00
330 lines
7.0 KiB
Diff
330 lines
7.0 KiB
Diff
From f14d20a4aed3b87277557d1ba9ad589dbbdc0900 Mon Sep 17 00:00:00 2001
|
|
From: Timothy Pearson <tpearson@raptorengineering.com>
|
|
Date: Mon, 12 Feb 2024 10:26:49 -0600
|
|
Subject: [PATCH] powerpc: Add gpr1 and fpu save/restore functions
|
|
|
|
When building the kernel in size optimized mode with the amdgpu module enabled,
|
|
gcc will begin referencing external gpr1 and fpu save/restore functions. This
|
|
will then cause a linker failure as we do not link against libgcc which
|
|
normally contains those builtin functions.
|
|
|
|
Implement gpr1 and fpu save/restore functions per the ABI v2 documentation.
|
|
|
|
Tested on a Talos II with a WX7100 installed and running in DisplayCore mode.
|
|
|
|
Reported-by: kernel test robot <lkp@intel.com>
|
|
Tested-by: Timothy Pearson <tpearson@raptorengineering.com>
|
|
Signed-off-by: Timothy Pearson <tpearson@raptorengineering.com>
|
|
---
|
|
arch/powerpc/kernel/prom_init_check.sh | 4 +-
|
|
arch/powerpc/lib/crtsavres.S | 244 +++++++++++++++++++++++++
|
|
scripts/mod/modpost.c | 4 +
|
|
3 files changed, 250 insertions(+), 2 deletions(-)
|
|
|
|
diff --git a/arch/powerpc/kernel/prom_init_check.sh b/arch/powerpc/kernel/prom_init_check.sh
|
|
index 69623b9045d5..76c5651e29d3 100644
|
|
--- a/arch/powerpc/kernel/prom_init_check.sh
|
|
+++ b/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
|
|
diff --git a/arch/powerpc/lib/crtsavres.S b/arch/powerpc/lib/crtsavres.S
|
|
index 7e5e1c28e56a..6cd870aacd7f 100644
|
|
--- a/arch/powerpc/lib/crtsavres.S
|
|
+++ b/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
|
|
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
|
|
index 267b9a0a3abc..153a163ba3f7 100644
|
|
--- a/scripts/mod/modpost.c
|
|
+++ b/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;
|
|
|
|
--
|
|
2.39.2
|
|
|