[parisc-linux] [Fwd: 2.4.0 do_fork() change, all architectures - take 2]

-------- Original Message --------
Subject: 2.4.0 do_fork() change, all architectures - take 2
Resent-Date: Sat, 2 Sep 2000 04:19:10 +0200 (MET DST)
Resent-From: [email protected]
Date: Sat, 02 Sep 2000 13:18:46 +1100
From: Keith Owens <[email protected]>
To: [email protected]

------- Blind-Carbon-Copy

X-Mailer: exmh version 2.1.1 10/15/1999
From: Keith Owens <[email protected]>
To: [email protected]
Subject: 2.4.0 do_fork() change, all architectures - take 2
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Date: Sat, 02 Sep 2000 13:18:46 +1100
Message-ID: <[email protected]>

DaveM pointed out that my 2.4.0-test8-pre1 do_fork patch would generate better sparc assembler if the extra parameter to do_fork was added at the end instead of in the middle. So change all do_fork(flags,sp,0,&regs)
to do_fork(flags,sp,&regs,0);

I'm not going to mail the complete patch again, you can get it from ftp://ftp.ocs.com.au/pub/do_fork-2.4.0-test8-take2.gz. The only significant difference is this bit to IA64, untested.

Index: 0-test8-pre1.1/arch/ia64/kernel/entry.S
- --- 0-test8-pre1.1/arch/ia64/kernel/entry.S Tue, 15 Aug 2000 17:50:48 +1000 kaos (linux-2.4/c/c/16_entry.S 1.3.1.1.1.2 644)
+++ 0-test8-pre1.2(w)/arch/ia64/kernel/entry.S Sat, 02 Sep 2000 12:49:16 +1100 kaos (linux-2.4/c/c/16_entry.S 1.3.1.1.1.2 644)
@@ -68,8 +68,8 @@
mov loc1=r16 // save ar.pfs across do_fork
UNW(.body)
mov out1=in1
- - mov out2=in2
- - adds out3=IA64_SWITCH_STACK_SIZE+16,sp // out3 = &regs
+ mov out3=in2
+ adds out2=IA64_SWITCH_STACK_SIZE+16,sp // out2 = &regs
mov out0=in0 // out0 = clone_flags
br.call.sptk.few rp=do_fork
.ret1: UNW(.restore sp)
@@ -87,8 +87,8 @@
mov loc1=r16 // save ar.pfs across do_fork
UNW(.body)
mov out1=in1
- - mov out2=0
- - adds out3=IA64_SWITCH_STACK_SIZE+16,sp // out3 = &regs
+ mov out3=0
+ adds out2=IA64_SWITCH_STACK_SIZE+16,sp // out2 = &regs
mov out0=in0 // out0 = clone_flags
br.call.sptk.few rp=do_fork
.ret2: UNW(.restore sp)
Index: 0-test8-pre1.1/arch/ia64/ia32/ia32_entry.S
- --- 0-test8-pre1.1/arch/ia64/ia32/ia32_entry.S Tue, 15 Aug 2000 17:50:48 +1000 kaos (linux-2.4/c/c/25_ia32_entry 1.3.1.1 644) +++ 0-test8-pre1.2(w)/arch/ia64/ia32/ia32_entry.S Sat, 02 Sep 2000 12:49:58 +1100 kaos (linux-2.4/c/c/25_ia32_entry 1.3.1.1 644) @@ -91,8 +91,8 @@
UNW(.body)

mov out1=0
- - mov out2=0
- - adds out3=IA64_SWITCH_STACK_SIZE+16,sp
+ mov out3=0
+ adds out2=IA64_SWITCH_STACK_SIZE+16,sp // out2 = &regs
br.call.sptk.few rp=do_fork
.ret3: mov ar.pfs=loc1
UNW(.restore sp)

------- End of Blind-Carbon-Copy