powerpc/64: asm use consistent global variable declaration and access

Use helper macros to access global variables, and place them in .data
sections rather than in .toc. Putting addresses in TOC is not required
because the kernel is linked with a single TOC.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220926034057.2360083-3-npiggin@gmail.com

9 files changed, 30 insertions, 39 deletions

diff --git a/arch/powerpc/boot/opal-calls.S b/arch/powerpc/boot/opal-calls.S
index ad0e15d930c4..1f2f330a459e 100644
--- a/arch/powerpc/boot/opal-calls.S
+++ b/arch/powerpc/boot/opal-calls.S
@@ -16,7 +16,7 @@ opal_kentry:
 	li	r5, 0
 	li	r6, 0
 	li	r7, 0
-	ld	r11,opal@got(r2)
+	LOAD_REG_ADDR(r11, opal)
 	ld	r8,0(r11)
 	ld	r9,8(r11)
 	bctr
@@ -35,7 +35,7 @@ opal_call:
 	mr	r13,r2
 
 	/* Set opal return address */
-	ld	r11,opal_return@got(r2)
+	LOAD_REG_ADDR(r11, opal_return)
 	mtlr	r11
 	mfmsr	r12
 
@@ -45,7 +45,7 @@ opal_call:
 	mtspr	SPRN_HSRR1,r12
 
 	/* load the opal call entry point and base */
-	ld	r11,opal@got(r2)
+	LOAD_REG_ADDR(r11, opal)
 	ld	r12,8(r11)
 	ld	r2,0(r11)
 	mtspr	SPRN_HSRR0,r12
diff --git a/arch/powerpc/boot/ppc_asm.h b/arch/powerpc/boot/ppc_asm.h
index 192b97523b05..2824a3e32aab 100644
--- a/arch/powerpc/boot/ppc_asm.h
+++ b/arch/powerpc/boot/ppc_asm.h
@@ -84,4 +84,13 @@
 #define MFTBU(dest)			mfspr dest, SPRN_TBRU
 #endif
 
+#ifdef CONFIG_PPC64_BOOT_WRAPPER
+#define LOAD_REG_ADDR(reg,name)			\
+	ld	reg,name@got(r2)
+#else
+#define LOAD_REG_ADDR(reg,name)			\
+	lis	reg,name@ha;			\
+	addi	reg,reg,name@l
+#endif
+
 #endif /* _PPC64_PPC_ASM_H */
diff --git a/arch/powerpc/kernel/swsusp_asm64.S b/arch/powerpc/kernel/swsusp_asm64.S
index 9f1903c7f540..f645652c2654 100644
--- a/arch/powerpc/kernel/swsusp_asm64.S
+++ b/arch/powerpc/kernel/swsusp_asm64.S
@@ -76,16 +76,10 @@
 swsusp_save_area:
 	.space SL_SIZE
 
-	.section ".toc","aw"
-swsusp_save_area_ptr:
-	.tc	swsusp_save_area[TC],swsusp_save_area
-restore_pblist_ptr:
-	.tc	restore_pblist[TC],restore_pblist
-
 	.section .text
 	.align  5
 _GLOBAL(swsusp_arch_suspend)
-	ld	r11,swsusp_save_area_ptr@toc(r2)
+	LOAD_REG_ADDR(r11, swsusp_save_area)
 	SAVE_SPECIAL(LR)
 	SAVE_REGISTER(r1)
 	SAVE_SPECIAL(CR)
@@ -131,7 +125,7 @@ END_FW_FTR_SECTION_IFCLR(FW_FEATURE_LPAR)
 	bl swsusp_save
 
 	/* restore LR */
-	ld	r11,swsusp_save_area_ptr@toc(r2)
+	LOAD_REG_ADDR(r11, swsusp_save_area)
 	RESTORE_SPECIAL(LR)
 	addi	r1,r1,128
 
@@ -145,7 +139,7 @@ BEGIN_FTR_SECTION
 END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
 	sync
 
-	ld	r12,restore_pblist_ptr@toc(r2)
+	LOAD_REG_ADDR(r11, restore_pblist)
 	ld	r12,0(r12)
 
 	cmpdi	r12,0
@@ -187,7 +181,7 @@ nothing_to_copy:
 	tlbia
 #endif
 
-	ld	r11,swsusp_save_area_ptr@toc(r2)
+	LOAD_REG_ADDR(r11, swsusp_save_area)
 
 	RESTORE_SPECIAL(CR)
 
@@ -265,7 +259,7 @@ END_FW_FTR_SECTION_IFCLR(FW_FEATURE_LPAR)
 	bl	do_after_copyback
 	addi	r1,r1,128
 
-	ld	r11,swsusp_save_area_ptr@toc(r2)
+	LOAD_REG_ADDR(r11, swsusp_save_area)
 	RESTORE_SPECIAL(LR)
 
 	li	r3, 0
diff --git a/arch/powerpc/kernel/trace/ftrace_mprofile.S b/arch/powerpc/kernel/trace/ftrace_mprofile.S
index 4fa23e260cab..33fcfb2eaded 100644
--- a/arch/powerpc/kernel/trace/ftrace_mprofile.S
+++ b/arch/powerpc/kernel/trace/ftrace_mprofile.S
@@ -85,8 +85,7 @@
 	std	r2, STK_GOT(r1)
 	ld	r2,PACATOC(r13)	/* get kernel TOC in r2 */
 
-	addis	r3,r2,function_trace_op@toc@ha
-	addi	r3,r3,function_trace_op@toc@l
+	LOAD_REG_ADDR(r3, function_trace_op)
 	ld	r5,0(r3)
 #else
 	lis	r3,function_trace_op@ha
diff --git a/arch/powerpc/kernel/vector.S b/arch/powerpc/kernel/vector.S
index 5cc24d8cce94..5cf64740edb8 100644
--- a/arch/powerpc/kernel/vector.S
+++ b/arch/powerpc/kernel/vector.S
@@ -155,8 +155,8 @@ _GLOBAL(load_up_vsx)
  * usage of floating-point registers.  These routines must be called
  * with preempt disabled.
  */
-#ifdef CONFIG_PPC32
 	.data
+#ifdef CONFIG_PPC32
 fpzero:
 	.long	0
 fpone:
@@ -169,18 +169,17 @@ fphalf:
 	lfs	fr,name@l(r11)
 #else
 
-	.section ".toc","aw"
 fpzero:
-	.tc	FD_0_0[TC],0
+	.quad	0
 fpone:
-	.tc	FD_3ff00000_0[TC],0x3ff0000000000000	/* 1.0 */
+	.quad	0x3ff0000000000000	/* 1.0 */
 fphalf:
-	.tc	FD_3fe00000_0[TC],0x3fe0000000000000	/* 0.5 */
+	.quad	0x3fe0000000000000	/* 0.5 */
 
-#define LDCONST(fr, name)	\
-	lfd	fr,name@toc(r2)
+#define LDCONST(fr, name)		\
+	addis	r11,r2,name@toc@ha;	\
+	lfd	fr,name@toc@l(r11)
 #endif
-
 	.text
 /*
  * Internal routine to enable floating point and set FPSCR to 0.
diff --git a/arch/powerpc/lib/copypage_64.S b/arch/powerpc/lib/copypage_64.S
index d1091b5ee5da..6812cb19d04a 100644
--- a/arch/powerpc/lib/copypage_64.S
+++ b/arch/powerpc/lib/copypage_64.S
@@ -9,11 +9,6 @@
 #include <asm/export.h>
 #include <asm/feature-fixups.h>
 
-        .section        ".toc","aw"
-PPC64_CACHES:
-        .tc             ppc64_caches[TC],ppc64_caches
-        .section        ".text"
-
 _GLOBAL_TOC(copy_page)
 BEGIN_FTR_SECTION
 	lis	r5,PAGE_SIZE@h
@@ -24,7 +19,7 @@ FTR_SECTION_ELSE
 ALT_FTR_SECTION_END_IFCLR(CPU_FTR_VMX_COPY)
 	ori	r5,r5,PAGE_SIZE@l
 BEGIN_FTR_SECTION
-	ld      r10,PPC64_CACHES@toc(r2)
+	LOAD_REG_ADDR(r10, ppc64_caches)
 	lwz	r11,DCACHEL1LOGBLOCKSIZE(r10)	/* log2 of cache block size */
 	lwz     r12,DCACHEL1BLOCKSIZE(r10)	/* get cache block size */
 	li	r9,0
diff --git a/arch/powerpc/lib/string_64.S b/arch/powerpc/lib/string_64.S
index 169872bc0892..df41ce06f86b 100644
--- a/arch/powerpc/lib/string_64.S
+++ b/arch/powerpc/lib/string_64.S
@@ -11,11 +11,6 @@
 #include <asm/asm-offsets.h>
 #include <asm/export.h>
 
-	.section	".toc","aw"
-PPC64_CACHES:
-	.tc		ppc64_caches[TC],ppc64_caches
-	.section	".text"
-
 /**
  * __arch_clear_user: - Zero a block of memory in user space, with less checking.
  * @to:   Destination address, in user space.
@@ -133,7 +128,7 @@ err1;	stb	r0,0(r3)
 	blr
 
 .Llong_clear:
-	ld	r5,PPC64_CACHES@toc(r2)
+	LOAD_REG_ADDR(r5, ppc64_caches)
 
 	bf	cr7*4+0,11f
 err2;	std	r0,0(r3)
diff --git a/arch/powerpc/perf/bhrb.S b/arch/powerpc/perf/bhrb.S
index 1aa3259716b8..47ba05d5ae76 100644
--- a/arch/powerpc/perf/bhrb.S
+++ b/arch/powerpc/perf/bhrb.S
@@ -21,7 +21,7 @@
 _GLOBAL(read_bhrb)
 	cmpldi	r3,31
 	bgt	1f
-	ld	r4,bhrb_table@got(r2)
+	LOAD_REG_ADDR(r4, bhrb_table)
 	sldi	r3,r3,3
 	add	r3,r4,r3
 	mtctr	r3
diff --git a/arch/powerpc/xmon/spr_access.S b/arch/powerpc/xmon/spr_access.S
index 720a52afdd58..c308ddf268fb 100644
--- a/arch/powerpc/xmon/spr_access.S
+++ b/arch/powerpc/xmon/spr_access.S
@@ -4,12 +4,12 @@
 
 /* unsigned long xmon_mfspr(sprn, default_value) */
 _GLOBAL(xmon_mfspr)
-	PPC_LL	r5, .Lmfspr_table@got(r2)
+	LOAD_REG_ADDR(r5, .Lmfspr_table)
 	b	xmon_mxspr
 
 /* void xmon_mtspr(sprn, new_value) */
 _GLOBAL(xmon_mtspr)
-	PPC_LL	r5, .Lmtspr_table@got(r2)
+	LOAD_REG_ADDR(r5, .Lmtspr_table)
 	b	xmon_mxspr
 
 /*