From: John Hodge <tpg@mutabah.net>
Date: Thu, 13 May 2010 15:09:57 +0000 (+0800)
Subject: Speedup fix to PUSH_GPR and POP_GPR
X-Git-Tag: rel0.06~191
X-Git-Url: https://git.ucc.asn.au/?a=commitdiff_plain;h=89fba51f2433cf185831ee70554b99fe87e44a9d;p=tpg%2Facess2.git

Speedup fix to PUSH_GPR and POP_GPR
---

diff --git a/Kernel/arch/x86_64/desctab.asm b/Kernel/arch/x86_64/desctab.asm
index eef93f0d..aec7656c 100644
--- a/Kernel/arch/x86_64/desctab.asm
+++ b/Kernel/arch/x86_64/desctab.asm
@@ -46,12 +46,42 @@ Irq%1:
 %endmacro
 
 %macro PUSH_GPR	0
-	PUSH_EX	r15, r14, r13, r12, r11, r10, r9, r8
-	PUSH_EX	rsi, rdi, rbp, rsp, rbx, rdx, rcx, rax
+	mov [rsp-0x08], r15
+	mov [rsp-0x10], r14
+	mov [rsp-0x18], r13
+	mov [rsp-0x20], r12
+	mov [rsp-0x28], r11
+	mov [rsp-0x30], r10
+	mov [rsp-0x38], r9
+	mov [rsp-0x40], r8
+	mov [rsp-0x48], rdi
+	mov [rsp-0x50], rsi
+	mov [rsp-0x58], rbp
+	mov [rsp-0x60], rsp
+	mov [rsp-0x68], rbx
+	mov [rsp-0x70], rdx
+	mov [rsp-0x78], rcx
+	mov [rsp-0x80], rax
+	sub rsp, 0x80
 %endmacro
 %macro POP_GPR	0
-	POP_EX	rsi, rdi, rbp, rsp, rbx, rdx, rcx, rax
-	POP_EX	r15, r14, r13, r12, r11, r10, r9, r8
+	add rsp, 0x80
+	mov r15, [rsp-0x08]
+	mov r14, [rsp-0x10]
+	mov r13, [rsp-0x18]
+	mov r12, [rsp-0x20]
+	mov r11, [rsp-0x28]
+	mov r10, [rsp-0x30]
+	mov r9, [rsp-0x38]
+	mov r8, [rsp-0x40]
+	mov rdi, [rsp-0x48]
+	mov rsi, [rsp-0x50]
+	mov rbp, [rsp-0x58]
+	;mov rsp, [rsp-0x60]
+	mov rbx, [rsp-0x68]
+	mov rdx, [rsp-0x70]
+	mov rcx, [rsp-0x78]
+	mov rax, [rsp-0x80]
 %endmacro
 
 [extern Proc_Scheduler]