diff options
Diffstat (limited to 'arch/s390/kernel/relocate_kernel64.S')
| -rw-r--r-- | arch/s390/kernel/relocate_kernel64.S | 82 |
1 files changed, 41 insertions, 41 deletions
diff --git a/arch/s390/kernel/relocate_kernel64.S b/arch/s390/kernel/relocate_kernel64.S index 8cdb86e8911..4fb443042d9 100644 --- a/arch/s390/kernel/relocate_kernel64.S +++ b/arch/s390/kernel/relocate_kernel64.S @@ -3,7 +3,7 @@ * * (C) Copyright IBM Corp. 2005 * - * Author(s): Rolf Adelsberger <adelsberger@de.ibm.com> + * Author(s): Rolf Adelsberger, * Heiko Carstens <heiko.carstens@de.ibm.com> * */ @@ -25,10 +25,10 @@ .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 @@ -37,16 +37,16 @@ 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 @@ -56,50 +56,50 @@ .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: |