LoongArch: Add la_abs macro implementation

LoongArch inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I736HO

--------------------------------

Use the "la_abs macro" instead of the "la.abs pseudo instruction" to
prepare for the subsequent PIE kernel. When PIE is not enabled, la_abs
is equivalent to la.abs.
Signed-off-by: NYouling Tang <tangyouling@loongson.cn>
Change-Id: I640026372b7fe03af662aa7fa980427ab860fe5c
(cherry picked from commit d40a9b0a)

arch/loongarch/include/asm/asmmacro.h

@@ -898,4 +898,8 @@
 	nor	\dst, \src, zero
 .endm
 
+.macro la_abs reg, sym
+	la.abs	\reg, \sym
+.endm
+
 #endif /* _ASM_ASMMACRO_H */

arch/loongarch/include/asm/stackframe.h

@@ -86,7 +86,7 @@
  * new value in sp.
  */
 	.macro	get_saved_sp docfi=0
-	la.abs	  t1, kernelsp
+	la_abs	  t1, kernelsp
 #ifdef CONFIG_SMP
 	csrrd	  t0, PERCPU_BASE_KS
 	LONG_ADD  t1, t1, t0

arch/loongarch/kernel/genex.S

@@ -34,7 +34,7 @@ SYM_FUNC_END(__arch_cpu_idle)
 SYM_FUNC_START(handle_vint)
 	BACKUP_T0T1
 	SAVE_ALL
-	la.abs	t1, __arch_cpu_idle
+	la_abs	t1, __arch_cpu_idle
 	LONG_L	t0, sp, PT_ERA
 	/* 32 byte rollback region */
 	ori	t0, t0, 0x1f
@@ -43,7 +43,7 @@ SYM_FUNC_START(handle_vint)
 	LONG_S	t0, sp, PT_ERA
 1:	move	a0, sp
 	move	a1, sp
-	la.abs	t0, do_vint
+	la_abs	t0, do_vint
 	jirl	ra, t0, 0
 	RESTORE_ALL_AND_RET
 SYM_FUNC_END(handle_vint)
@@ -71,7 +71,7 @@ SYM_FUNC_END(except_vec_cex)
 	SAVE_ALL
 	build_prep_\prep
 	move	a0, sp
-	la.abs	t0, do_\handler
+	la_abs	t0, do_\handler
 	jirl	ra, t0, 0
 	RESTORE_ALL_AND_RET
 	SYM_FUNC_END(handle_\exception)
@@ -90,6 +90,6 @@ SYM_FUNC_END(except_vec_cex)
 	BUILD_HANDLER reserved reserved none	/* others */
 
 SYM_FUNC_START(handle_sys)
-	la.abs	t0, handle_syscall
+	la_abs	t0, handle_syscall
 	jr	t0
 SYM_FUNC_END(handle_sys)

arch/loongarch/mm/tlbex.S

@@ -32,7 +32,7 @@ SYM_FUNC_START(handle_tlb_protect)
 	move	a1, zero
 	csrrd	a2, LOONGARCH_CSR_BADV
 	REG_S	a2, sp, PT_BVADDR
-	la.abs	t0, do_page_fault
+	la_abs	t0, do_page_fault
 	jirl	ra, t0, 0
 	RESTORE_ALL_AND_RET
 SYM_FUNC_END(handle_tlb_protect)
@@ -122,7 +122,7 @@ leave_load:
 	ertn
 #ifdef CONFIG_64BIT
 vmalloc_load:
-	la.abs	t1, swapper_pg_dir
+	la_abs	t1, swapper_pg_dir
 	b	vmalloc_done_load
 #endif
 
@@ -196,7 +196,7 @@ tlb_huge_update_load:
 nopage_tlb_load:
 	dbar	0
 	csrrd	ra, EXCEPTION_KS2
-	la.abs	t0, tlb_do_page_fault_0
+	la_abs	t0, tlb_do_page_fault_0
 	jr	t0
 SYM_FUNC_END(handle_tlb_load)
 
@@ -288,7 +288,7 @@ leave_store:
 	ertn
 #ifdef CONFIG_64BIT
 vmalloc_store:
-	la.abs	t1, swapper_pg_dir
+	la_abs	t1, swapper_pg_dir
 	b	vmalloc_done_store
 #endif
 
@@ -364,7 +364,7 @@ tlb_huge_update_store:
 nopage_tlb_store:
 	dbar	0
 	csrrd	ra, EXCEPTION_KS2
-	la.abs	t0, tlb_do_page_fault_1
+	la_abs	t0, tlb_do_page_fault_1
 	jr	t0
 SYM_FUNC_END(handle_tlb_store)
 
@@ -453,7 +453,7 @@ leave_modify:
 	ertn
 #ifdef CONFIG_64BIT
 vmalloc_modify:
-	la.abs	t1, swapper_pg_dir
+	la_abs	t1, swapper_pg_dir
 	b	vmalloc_done_modify
 #endif
 
@@ -523,7 +523,7 @@ tlb_huge_update_modify:
 nopage_tlb_modify:
 	dbar	0
 	csrrd	ra, EXCEPTION_KS2
-	la.abs	t0, tlb_do_page_fault_1
+	la_abs	t0, tlb_do_page_fault_1
 	jr	t0
 SYM_FUNC_END(handle_tlb_modify)