From: "Cédric Le Goater" <clegoate@redhat.com>
To: Thomas Huth <thuth@redhat.com>, qemu-devel@nongnu.org
Cc: qemu-s390x@nongnu.org,
"Christian Borntraeger" <borntraeger@linux.ibm.com>,
mrezanin@redhat.com, "Cédric Le Goater" <clg@kaod.org>
Subject: Re: [PATCH 1/4] pc-bios/s390-ccw: Fix indentation in start.S
Date: Mon, 26 Jun 2023 15:40:31 +0200 [thread overview]
Message-ID: <108dc59e-7519-6156-f107-c7fe1a1f36eb@redhat.com> (raw)
In-Reply-To: <20230626132138.87668-2-thuth@redhat.com>
On 6/26/23 15:21, Thomas Huth wrote:
> start.S is currently indented with a mixture of spaces and tabs, which
> is quite ugly. QEMU coding style says indentation should be 4 spaces,
> and this is also what we are using in the assembler files in the
> tests/tcg/s390x/ folder already, so let's adjust start.S accordingly.
>
> Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Thanks,
C.
> ---
> pc-bios/s390-ccw/start.S | 136 +++++++++++++++++++--------------------
> 1 file changed, 68 insertions(+), 68 deletions(-)
>
> diff --git a/pc-bios/s390-ccw/start.S b/pc-bios/s390-ccw/start.S
> index 6072906df4..d29de09cc6 100644
> --- a/pc-bios/s390-ccw/start.S
> +++ b/pc-bios/s390-ccw/start.S
> @@ -10,37 +10,37 @@
> * directory.
> */
>
> - .globl _start
> + .globl _start
> _start:
>
> - larl %r15, stack + 0x8000 /* Set up stack */
> + larl %r15,stack + 0x8000 /* Set up stack */
>
> - /* clear bss */
> - larl %r2, __bss_start
> - larl %r3, _end
> - slgr %r3, %r2 /* get sizeof bss */
> - ltgr %r3,%r3 /* bss empty? */
> - jz done
> - aghi %r3,-1
> - srlg %r4,%r3,8 /* how many 256 byte chunks? */
> - ltgr %r4,%r4
> - lgr %r1,%r2
> - jz remainder
> + /* clear bss */
> + larl %r2,__bss_start
> + larl %r3,_end
> + slgr %r3,%r2 /* get sizeof bss */
> + ltgr %r3,%r3 /* bss empty? */
> + jz done
> + aghi %r3,-1
> + srlg %r4,%r3,8 /* how many 256 byte chunks? */
> + ltgr %r4,%r4
> + lgr %r1,%r2
> + jz remainder
> loop:
> - xc 0(256,%r1),0(%r1)
> - la %r1,256(%r1)
> - brctg %r4,loop
> + xc 0(256,%r1),0(%r1)
> + la %r1,256(%r1)
> + brctg %r4,loop
> remainder:
> - larl %r2,memsetxc
> - ex %r3,0(%r2)
> + larl %r2,memsetxc
> + ex %r3,0(%r2)
> done:
> - /* set up a pgm exception disabled wait psw */
> - larl %r2, disabled_wait_psw
> - mvc 0x01d0(16), 0(%r2)
> - j main /* And call C */
> + /* set up a pgm exception disabled wait psw */
> + larl %r2,disabled_wait_psw
> + mvc 0x01d0(16),0(%r2)
> + j main /* And call C */
>
> memsetxc:
> - xc 0(1,%r1),0(%r1)
> + xc 0(1,%r1),0(%r1)
>
>
> /*
> @@ -48,11 +48,11 @@ memsetxc:
> *
> * stops the current guest cpu.
> */
> - .globl disabled_wait
> + .globl disabled_wait
> disabled_wait:
> - larl %r1,disabled_wait_psw
> - lpswe 0(%r1)
> -1: j 1b
> + larl %r1,disabled_wait_psw
> + lpswe 0(%r1)
> +1: j 1b
>
>
> /*
> @@ -60,61 +60,61 @@ disabled_wait:
> *
> * eats one sclp interrupt
> */
> - .globl consume_sclp_int
> + .globl consume_sclp_int
> consume_sclp_int:
> - /* enable service interrupts in cr0 */
> - stctg %c0,%c0,0(%r15)
> - oi 6(%r15),0x2
> - lctlg %c0,%c0,0(%r15)
> - /* prepare external call handler */
> - larl %r1, external_new_code
> - stg %r1, 0x1b8
> - larl %r1, external_new_mask
> - mvc 0x1b0(8),0(%r1)
> - /* load enabled wait PSW */
> - larl %r1, enabled_wait_psw
> - lpswe 0(%r1)
> + /* enable service interrupts in cr0 */
> + stctg %c0,%c0,0(%r15)
> + oi 6(%r15),0x2
> + lctlg %c0,%c0,0(%r15)
> + /* prepare external call handler */
> + larl %r1,external_new_code
> + stg %r1,0x1b8
> + larl %r1,external_new_mask
> + mvc 0x1b0(8),0(%r1)
> + /* load enabled wait PSW */
> + larl %r1,enabled_wait_psw
> + lpswe 0(%r1)
>
> /*
> * void consume_io_int(void)
> *
> * eats one I/O interrupt
> */
> - .globl consume_io_int
> + .globl consume_io_int
> consume_io_int:
> - /* enable I/O interrupts in cr6 */
> - stctg %c6,%c6,0(%r15)
> - oi 4(%r15), 0xff
> - lctlg %c6,%c6,0(%r15)
> - /* prepare i/o call handler */
> - larl %r1, io_new_code
> - stg %r1, 0x1f8
> - larl %r1, io_new_mask
> - mvc 0x1f0(8),0(%r1)
> - /* load enabled wait PSW */
> - larl %r1, enabled_wait_psw
> - lpswe 0(%r1)
> + /* enable I/O interrupts in cr6 */
> + stctg %c6,%c6,0(%r15)
> + oi 4(%r15), 0xff
> + lctlg %c6,%c6,0(%r15)
> + /* prepare i/o call handler */
> + larl %r1,io_new_code
> + stg %r1,0x1f8
> + larl %r1,io_new_mask
> + mvc 0x1f0(8),0(%r1)
> + /* load enabled wait PSW */
> + larl %r1,enabled_wait_psw
> + lpswe 0(%r1)
>
> external_new_code:
> - /* disable service interrupts in cr0 */
> - stctg %c0,%c0,0(%r15)
> - ni 6(%r15),0xfd
> - lctlg %c0,%c0,0(%r15)
> - br %r14
> + /* disable service interrupts in cr0 */
> + stctg %c0,%c0,0(%r15)
> + ni 6(%r15),0xfd
> + lctlg %c0,%c0,0(%r15)
> + br %r14
>
> io_new_code:
> - /* disable I/O interrupts in cr6 */
> - stctg %c6,%c6,0(%r15)
> - ni 4(%r15), 0x00
> - lctlg %c6,%c6,0(%r15)
> - br %r14
> + /* disable I/O interrupts in cr6 */
> + stctg %c6,%c6,0(%r15)
> + ni 4(%r15),0x00
> + lctlg %c6,%c6,0(%r15)
> + br %r14
>
> - .align 8
> + .align 8
> disabled_wait_psw:
> - .quad 0x0002000180000000,0x0000000000000000
> + .quad 0x0002000180000000,0x0000000000000000
> enabled_wait_psw:
> - .quad 0x0302000180000000,0x0000000000000000
> + .quad 0x0302000180000000,0x0000000000000000
> external_new_mask:
> - .quad 0x0000000180000000
> + .quad 0x0000000180000000
> io_new_mask:
> - .quad 0x0000000180000000
> + .quad 0x0000000180000000
next prev parent reply other threads:[~2023-06-26 13:41 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-26 13:21 [PATCH 0/4] pc-bios/s390-ccw: Fixes and improvements for start.S Thomas Huth
2023-06-26 13:21 ` [PATCH 1/4] pc-bios/s390-ccw: Fix indentation in start.S Thomas Huth
2023-06-26 13:40 ` Cédric Le Goater [this message]
2023-06-26 13:21 ` [PATCH 2/4] pc-bios/s390-ccw: Provide space for initial stack frame " Thomas Huth
2023-06-26 13:41 ` Cédric Le Goater
2023-06-26 14:46 ` Christian Borntraeger
2023-06-26 13:21 ` [PATCH 3/4] pc-bios/s390-ccw: Move the stack array into start.S Thomas Huth
2023-06-26 14:54 ` Christian Borntraeger
2023-06-26 15:25 ` Richard Henderson
2023-06-27 6:55 ` Thomas Huth
2023-06-26 13:21 ` [PATCH 4/4] pc-bios/s390-ccw: Don't use __bss_start with the "larl" instruction Thomas Huth
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