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From c783eab8a3770703a39bbbd7edd23af7b9cb8f14 Mon Sep 17 00:00:00 2001
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From: Thomas Huth <thuth@redhat.com>
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Date: Wed, 12 May 2021 19:15:48 +0200
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Subject: [PATCH 35/39] pc-bios/s390-ccw: Fix inline assembly for older
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versions of Clang
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Jon Maloy <jmaloy@redhat.com>
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RH-MergeRequest: 24: v7: Add support for building qemu-kvm with clang and safe-stack
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RH-Commit: [8/11] 9a69c7705b8128b4098f818c6b672d484e459c83 (jmaloy/qemu-kvm-centos-jon)
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RH-Bugzilla: 1939509 1940132
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RH-Acked-by: Danilo Cesar Lemes de Paula <ddepaula@redhat.com>
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RH-Acked-by: Thomas Huth <thuth@redhat.com>
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RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
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Clang versions before v11.0 insist on having the %rX or %cX register
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names instead of just a number. Since our Travis-CI is currently
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still using Clang v6.0, we have to fix this to avoid failing jobs.
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Message-Id: <20210512171550.476130-2-thuth@redhat.com>
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Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
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Signed-off-by: Thomas Huth <thuth@redhat.com>
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(cherry picked from commit 052b66e7211af64964e005126eaa3c944b296b0e)
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Signed-off-by: Jon Maloy <jmaloy@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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pc-bios/s390-ccw/helper.h | 2 +-
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pc-bios/s390-ccw/jump2ipl.c | 4 ++--
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pc-bios/s390-ccw/menu.c | 8 ++++----
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pc-bios/s390-ccw/virtio.c | 2 +-
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4 files changed, 8 insertions(+), 8 deletions(-)
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diff --git a/pc-bios/s390-ccw/helper.h b/pc-bios/s390-ccw/helper.h
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index dfcfea0ff0..3d0731c4c6 100644
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--- a/pc-bios/s390-ccw/helper.h
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+++ b/pc-bios/s390-ccw/helper.h
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@@ -31,7 +31,7 @@ static inline void *u32toptr(uint32_t n)
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static inline void yield(void)
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{
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- asm volatile ("diag 0,0,0x44"
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+ asm volatile ("diag %%r0,%%r0,0x44"
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: :
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: "memory", "cc");
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}
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diff --git a/pc-bios/s390-ccw/jump2ipl.c b/pc-bios/s390-ccw/jump2ipl.c
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index 73e4367e09..78f5f46533 100644
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--- a/pc-bios/s390-ccw/jump2ipl.c
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+++ b/pc-bios/s390-ccw/jump2ipl.c
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@@ -64,8 +64,8 @@ void jump_to_IPL_code(uint64_t address)
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* We use the load normal reset to keep r15 unchanged. jump_to_IPL_2
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* can then use r15 as its stack pointer.
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*/
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- asm volatile("lghi 1,1\n\t"
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- "diag 1,1,0x308\n\t"
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+ asm volatile("lghi %%r1,1\n\t"
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+ "diag %%r1,%%r1,0x308\n\t"
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: : : "1", "memory");
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panic("\n! IPL returns !\n");
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}
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diff --git a/pc-bios/s390-ccw/menu.c b/pc-bios/s390-ccw/menu.c
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index de8260a5d6..d601952d3e 100644
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--- a/pc-bios/s390-ccw/menu.c
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+++ b/pc-bios/s390-ccw/menu.c
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@@ -36,9 +36,9 @@ static inline void enable_clock_int(void)
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uint64_t tmp = 0;
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asm volatile(
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- "stctg 0,0,%0\n"
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+ "stctg %%c0,%%c0,%0\n"
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"oi 6+%0, 0x8\n"
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- "lctlg 0,0,%0"
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+ "lctlg %%c0,%%c0,%0"
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: : "Q" (tmp) : "memory"
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);
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}
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@@ -48,9 +48,9 @@ static inline void disable_clock_int(void)
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uint64_t tmp = 0;
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asm volatile(
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- "stctg 0,0,%0\n"
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+ "stctg %%c0,%%c0,%0\n"
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"ni 6+%0, 0xf7\n"
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- "lctlg 0,0,%0"
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+ "lctlg %%c0,%%c0,%0"
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: : "Q" (tmp) : "memory"
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);
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}
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diff --git a/pc-bios/s390-ccw/virtio.c b/pc-bios/s390-ccw/virtio.c
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index ab49840db8..5d2c6e3381 100644
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--- a/pc-bios/s390-ccw/virtio.c
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+++ b/pc-bios/s390-ccw/virtio.c
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@@ -54,7 +54,7 @@ static long kvm_hypercall(unsigned long nr, unsigned long param1,
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register ulong r_param3 asm("4") = param3;
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register long retval asm("2");
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- asm volatile ("diag 2,4,0x500"
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+ asm volatile ("diag %%r2,%%r4,0x500"
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: "=d" (retval)
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: "d" (r_nr), "0" (r_param1), "r"(r_param2), "d"(r_param3)
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: "memory", "cc");
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--
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2.27.0
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