patch-2.4.20 linux-2.4.20/arch/s390/kernel/entry.S

• Lines: 76
• Date: Thu Nov 28 15:53:11 2002
• Orig file: linux-2.4.19/arch/s390/kernel/entry.S
• Orig date: Fri Aug 2 17:39:43 2002

diff -urN linux-2.4.19/arch/s390/kernel/entry.S linux-2.4.20/arch/s390/kernel/entry.S
@@ -221,11 +221,11 @@
 # call trace before and after sys_call
 #
 sysc_tracesys:
-	la	%r12,BASED(sysc_return)
+	la	%r11,BASED(sysc_return)
 
 #
 # call syscall_trace before and after system call
-# special linkage: %r12 contains the return address for trace_svc
+# special linkage: %r11 contains the return address for trace_svc
 #
 trace_svc:
         l       %r1,BASED(.Ltrace)
@@ -244,7 +244,7 @@
         basr    %r14,%r8          # call sys_xxx
         st      %r2,SP_R2(%r15)   # store return value
         l       %r1,BASED(.Ltrace)
-	lr	%r14,%r12	  # return point is in %r12
+	lr	%r14,%r11	  # return point is in %r11
         br      %r1
 
 #
@@ -678,7 +678,7 @@
 # call trace before and after sys_call
 #
 pgm_tracesys:
-	la	%r12,BASED(pgm_svcret)
+	la	%r11,BASED(pgm_svcret)
 	b	BASED(trace_svc)
 
 /*
@@ -758,25 +758,25 @@
 	SAVE_ALL_BASE
         SAVE_ALL __LC_EXT_OLD_PSW,0
         GET_CURRENT                    # load pointer to task_struct to R9
-        la      %r2,SP_PTREGS(%r15)    # address of register-save area
-        lh      %r3,__LC_EXT_INT_CODE  # error code
-        lr      %r1,%r3                # calculate index = code & 0xff
-        n       %r1,BASED(.Lc0xff)
-        sll     %r1,2
-        l       %r4,BASED(.Lext_hash)
-        l       %r4,0(%r1,%r4)         # get first list entry for hash value
-        ltr     %r4,%r4                # == NULL ?
-        bz      BASED(io_return)       # yes, nothing to do, exit
+	lh	%r6,__LC_EXT_INT_CODE  # get interruption code
+	lr	%r1,%r6		       # calculate index = code & 0xff
+	n	%r1,BASED(.Lc0xff)
+	sll	%r1,2
+	l	%r7,BASED(.Lext_hash)
+	l	%r7,0(%r1,%r7)	       # get first list entry for hash value
+	ltr	%r7,%r7		       # == NULL ?
+	bz	BASED(io_return)       # yes, nothing to do, exit
 ext_int_loop:
-        ch      %r3,8(%r4)             # compare external interrupt code
-        be      BASED(ext_int_found)
-        icm     %r4,15,0(%r4)          # next list entry
-        bnz     BASED(ext_int_loop)
-        b       BASED(io_return)
-ext_int_found:
-        l       %r4,4(%r4)             # get handler address
-        la      %r14,BASED(io_return)
-        br      %r4                    # branch to ext call handler
+	ch	%r6,8(%r7)	       # compare external interrupt code
+	bne	BASED(ext_int_next)
+	l	%r1,4(%r7)	       # get handler address
+	la	%r2,SP_PTREGS(%r15)    # address of register-save area
+	lr	%r3,%r6		       # interruption code
+	basr	%r14,%r1	       # call handler
+ext_int_next:
+	icm	%r7,15,0(%r7)	       # next list entry
+	bnz	BASED(ext_int_loop)
+	b	BASED(io_return)
 
 /*
  * Machine check handler routines