*
* (C) Copyright IBM Corp. 2005
*
- * Author(s): Rolf Adelsberger <adelsberger@de.ibm.com>
+ * Author(s): Rolf Adelsberger,
* Heiko Carstens <heiko.carstens@de.ibm.com>
*
*/
.text
.globl relocate_kernel
relocate_kernel:
- basr %r13,0 #base address
+ basr %r13,0 # base address
.base:
- stnsm sys_msk-.base(%r13),0xf8 #disable DAT and IRQs
- spx zero64-.base(%r13) #absolute addressing mode
+ stnsm sys_msk-.base(%r13),0xf8 # disable DAT and IRQs
+ spx zero64-.base(%r13) # absolute addressing mode
stctg %c0,%c15,ctlregs-.base(%r13)
stmg %r0,%r15,gprregs-.base(%r13)
lghi %r0,3
la %r0,.back_pgm-.base(%r13)
stg %r0,0x1d8(%r0)
la %r1,load_psw-.base(%r13)
- mvc 0(8,%r0),0(%r1)
+ mvc 0(8,%r0),0(%r1)
la %r0,.back-.base(%r13)
st %r0,4(%r0)
oi 4(%r0),0x80
lghi %r0,0
diag %r0,%r0,0x308
.back:
- lhi %r1,1 #mode 1 = esame
- sigp %r1,%r0,0x12 #switch to esame mode
- sam64 #switch to 64 bit addressing mode
+ lhi %r1,1 # mode 1 = esame
+ sigp %r1,%r0,0x12 # switch to esame mode
+ sam64 # switch to 64 bit addressing mode
basr %r13,0
.back_base:
oi have_diag308-.back_base(%r13),0x01
.back_pgm:
lmg %r0,%r15,gprregs-.base(%r13)
.top:
- lghi %r7,4096 #load PAGE_SIZE in r7
- lghi %r9,4096 #load PAGE_SIZE in r9
- lg %r5,0(%r2) #read another word for indirection page
- aghi %r2,8 #increment pointer
- tml %r5,0x1 #is it a destination page?
- je .indir_check #NO, goto "indir_check"
- lgr %r6,%r5 #r6 = r5
- nill %r6,0xf000 #mask it out and...
- j .top #...next iteration
+ lghi %r7,4096 # load PAGE_SIZE in r7
+ lghi %r9,4096 # load PAGE_SIZE in r9
+ lg %r5,0(%r2) # read another word for indirection page
+ aghi %r2,8 # increment pointer
+ tml %r5,0x1 # is it a destination page?
+ je .indir_check # NO, goto "indir_check"
+ lgr %r6,%r5 # r6 = r5
+ nill %r6,0xf000 # mask it out and...
+ j .top # ...next iteration
.indir_check:
- tml %r5,0x2 #is it a indirection page?
- je .done_test #NO, goto "done_test"
- nill %r5,0xf000 #YES, mask out,
- lgr %r2,%r5 #move it into the right register,
- j .top #and read next...
+ tml %r5,0x2 # is it a indirection page?
+ je .done_test # NO, goto "done_test"
+ nill %r5,0xf000 # YES, mask out,
+ lgr %r2,%r5 # move it into the right register,
+ j .top # and read next...
.done_test:
- tml %r5,0x4 #is it the done indicator?
- je .source_test #NO! Well, then it should be the source indicator...
- j .done #ok, lets finish it here...
+ tml %r5,0x4 # is it the done indicator?
+ je .source_test # NO! Well, then it should be the source indicator...
+ j .done # ok, lets finish it here...
.source_test:
- tml %r5,0x8 #it should be a source indicator...
- je .top #NO, ignore it...
- lgr %r8,%r5 #r8 = r5
- nill %r8,0xf000 #masking
- 0: mvcle %r6,%r8,0x0 #copy PAGE_SIZE bytes from r8 to r6 - pad with 0
+ tml %r5,0x8 # it should be a source indicator...
+ je .top # NO, ignore it...
+ lgr %r8,%r5 # r8 = r5
+ nill %r8,0xf000 # masking
+ 0: mvcle %r6,%r8,0x0 # copy PAGE_SIZE bytes from r8 to r6 - pad with 0
jo 0b
- j .top
+ j .top
.done:
- sgr %r0,%r0 #clear register r0
- la %r4,load_psw-.base(%r13) #load psw-address into the register
- o %r3,4(%r4) #or load address into psw
+ sgr %r0,%r0 # clear register r0
+ la %r4,load_psw-.base(%r13) # load psw-address into the register
+ o %r3,4(%r4) # or load address into psw
st %r3,4(%r4)
- mvc 0(8,%r0),0(%r4) #copy psw to absolute address 0
+ mvc 0(8,%r0),0(%r4) # copy psw to absolute address 0
tm have_diag308-.base(%r13),0x01
jno .no_diag308
diag %r0,%r0,0x308
.no_diag308:
- sam31 #31 bit mode
- sr %r1,%r1 #erase register r1
- sr %r2,%r2 #erase register r2
- sigp %r1,%r2,0x12 #set cpuid to zero
- lpsw 0 #hopefully start new kernel...
+ sam31 # 31 bit mode
+ sr %r1,%r1 # erase register r1
+ sr %r2,%r2 # erase register r2
+ sigp %r1,%r2,0x12 # set cpuid to zero
+ lpsw 0 # hopefully start new kernel...
- .align 8
+ .align 8
zero64:
.quad 0
load_psw:
git.openpandora.org / pandora-kernel.git / blobdiff