Commit eaadeb46 authored by He Sheng's avatar He Sheng Committed by guzitao
Browse files

sw64: rewrite {SAVE,RESTORE}_ALL in a simpler way 

Sunway inclusion
category: performance
bugzilla: https://gitee.com/openeuler/kernel/issues/I56OLG



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

Move {SAVE,RESTORE}_{COMMON,CALLEE}_REGS into {SAVE,RESTORE}_ALL
and remove the useless macros.

Signed-off-by: default avatarHe Sheng <hesheng@wxiat.com>
Reviewed-by: default avatarCui Wei <cuiwei@wxiat.com>
Signed-off-by: default avatarGu Zitao <guzitao@wxiat.com>
parent ce7b9b49

arch/sw_64/kernel/entry.S

+16 −32
Original line number Diff line number Diff line
@@ -20,7 +20,7 @@ 
 * regs 29-30 saved and set up by HMcode

 */



	.macro SAVE_COMMON_REGS

	.macro SAVE_ALL

	ldi	$sp, -PT_REGS_PS($sp)

	stl	$0, PT_REGS_R0($sp)

	stl	$1, PT_REGS_R1($sp)
@@ -32,6 +32,13 @@ 
	stl	$6, PT_REGS_R6($sp)

	stl	$7, PT_REGS_R7($sp)

	stl	$8, PT_REGS_R8($sp)

	stl	$9, PT_REGS_R9($sp)

	stl	$10, PT_REGS_R10($sp)

	stl	$11, PT_REGS_R11($sp)

	stl	$12, PT_REGS_R12($sp)

	stl	$13, PT_REGS_R13($sp)

	stl	$14, PT_REGS_R14($sp)

	stl	$15, PT_REGS_R15($sp)

	stl	$19, PT_REGS_R19($sp)

	stl	$20, PT_REGS_R20($sp)

	stl	$21, PT_REGS_R21($sp)
@@ -43,7 +50,7 @@ 
	stl	$27, PT_REGS_R27($sp)

	.endm



	.macro RESTORE_COMMON_REGS

	.macro RESTORE_ALL

	ldl	$0, PT_REGS_R0($sp)

	ldl	$1, PT_REGS_R1($sp)

	ldl	$2, PT_REGS_R2($sp)
@@ -53,6 +60,13 @@ 
	ldl	$6, PT_REGS_R6($sp)

	ldl	$7, PT_REGS_R7($sp)

	ldl	$8, PT_REGS_R8($sp)

	ldl	$9, PT_REGS_R9($sp)

	ldl	$10, PT_REGS_R10($sp)

	ldl	$11, PT_REGS_R11($sp)

	ldl	$12, PT_REGS_R12($sp)

	ldl	$13, PT_REGS_R13($sp)

	ldl	$14, PT_REGS_R14($sp)

	ldl	$15, PT_REGS_R15($sp)

	ldl	$19, PT_REGS_R19($sp)

	ldl	$20, PT_REGS_R20($sp)

	ldl	$21, PT_REGS_R21($sp)
@@ -66,36 +80,6 @@ 
	ldi	$sp, PT_REGS_PS($sp)

	.endm



	.macro SAVE_CALLEE_REGS

	stl	$9, PT_REGS_R9($sp)

	stl	$10, PT_REGS_R10($sp)

	stl	$11, PT_REGS_R11($sp)

	stl	$12, PT_REGS_R12($sp)

	stl	$13, PT_REGS_R13($sp)

	stl	$14, PT_REGS_R14($sp)

	stl	$15, PT_REGS_R15($sp)

	.endm



	.macro RESTORE_CALLEE_REGS

	ldl	$9, PT_REGS_R9($sp)

	ldl	$10, PT_REGS_R10($sp)

	ldl	$11, PT_REGS_R11($sp)

	ldl	$12, PT_REGS_R12($sp)

	ldl	$13, PT_REGS_R13($sp)

	ldl	$14, PT_REGS_R14($sp)

	ldl	$15, PT_REGS_R15($sp)

	.endm



	.macro SAVE_ALL

	SAVE_COMMON_REGS

	SAVE_CALLEE_REGS

	.endm



	.macro RESTORE_ALL

	RESTORE_CALLEE_REGS

	RESTORE_COMMON_REGS

	.endm



/*

 * Non-syscall kernel entry points.

 */