Commit d40a9b0a authored by Youling Tang's avatar Youling Tang Committed by Hongchen Zhang
Browse files

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: default avatarYouling Tang <tangyouling@loongson.cn>
Change-Id: I640026372b7fe03af662aa7fa980427ab860fe5c
parent c066ef2f

arch/loongarch/include/asm/asmmacro.h

+4 −0
Original line number Diff line number Diff line
@@ -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

+1 −1
Original line number Diff line number Diff line
@@ -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

+4 −4
Original line number Diff line number Diff line
@@ -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

+7 −7
Original line number Diff line number Diff line
@@ -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)