From: Roman Bolshakov <r.bolshakov@yadro.com>
To: <kvm@vger.kernel.org>
Cc: Thomas Huth <thuth@redhat.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Roman Bolshakov <r.bolshakov@yadro.com>,
Cameron Esfahani <dirty@apple.com>
Subject: [kvm-unit-tests PATCH v2 02/10] x86: Replace instruction prefixes with spaces
Date: Tue, 1 Sep 2020 11:50:48 +0300 [thread overview]
Message-ID: <20200901085056.33391-3-r.bolshakov@yadro.com> (raw)
In-Reply-To: <20200901085056.33391-1-r.bolshakov@yadro.com>
There are three kinds of x86 prefix delimiters in GNU binutils:
'/', '\\' and a space.
The first works on Linux and few other platforms. The second one is
SVR-4 compatible and works on the generic elf target. The last kind is
universal and works everywhere, it's also used in the GAS manual [1].
Space delimiters fix the build errors on x86_64-elf binutils:
x86/cstart64.S:217: Error: invalid character '/' in mnemonic
x86/cstart64.S:313: Error: invalid character '/' in mnemonic
1. https://sourceware.org/binutils/docs/as/i386_002dPrefixes.html
Cc: Cameron Esfahani <dirty@apple.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Roman Bolshakov <r.bolshakov@yadro.com>
---
x86/cstart.S | 4 ++--
x86/cstart64.S | 4 ++--
x86/emulator.c | 38 +++++++++++++++++++-------------------
3 files changed, 23 insertions(+), 23 deletions(-)
diff --git a/x86/cstart.S b/x86/cstart.S
index c0efc5f..489c561 100644
--- a/x86/cstart.S
+++ b/x86/cstart.S
@@ -149,7 +149,7 @@ save_id:
ap_start32:
setup_segments
mov $-4096, %esp
- lock/xaddl %esp, smp_stacktop
+ lock xaddl %esp, smp_stacktop
setup_percpu_area
call prepare_32
call reset_apic
@@ -206,7 +206,7 @@ ap_init:
lea sipi_entry, %esi
xor %edi, %edi
mov $(sipi_end - sipi_entry), %ecx
- rep/movsb
+ rep movsb
mov $APIC_DEFAULT_PHYS_BASE, %eax
movl $(APIC_DEST_ALLBUT | APIC_DEST_PHYSICAL | APIC_DM_INIT | APIC_INT_ASSERT), APIC_ICR(%eax)
movl $(APIC_DEST_ALLBUT | APIC_DEST_PHYSICAL | APIC_DM_STARTUP), APIC_ICR(%eax)
diff --git a/x86/cstart64.S b/x86/cstart64.S
index 2d16688..25a296c 100644
--- a/x86/cstart64.S
+++ b/x86/cstart64.S
@@ -226,7 +226,7 @@ sipi_end:
ap_start32:
setup_segments
mov $-4096, %esp
- lock/xaddl %esp, smp_stacktop
+ lock xaddl %esp, smp_stacktop
setup_percpu_area
call prepare_64
ljmpl $8, $ap_start64
@@ -323,7 +323,7 @@ ap_init:
lea sipi_entry, %rsi
xor %rdi, %rdi
mov $(sipi_end - sipi_entry), %rcx
- rep/movsb
+ rep movsb
mov $APIC_DEFAULT_PHYS_BASE, %eax
movl $(APIC_DEST_ALLBUT | APIC_DEST_PHYSICAL | APIC_DM_INIT | APIC_INT_ASSERT), APIC_ICR(%rax)
movl $(APIC_DEST_ALLBUT | APIC_DEST_PHYSICAL | APIC_DM_STARTUP), APIC_ICR(%rax)
diff --git a/x86/emulator.c b/x86/emulator.c
index 98743d1..e46d97e 100644
--- a/x86/emulator.c
+++ b/x86/emulator.c
@@ -61,71 +61,71 @@ static void test_cmps_one(unsigned char *m1, unsigned char *m3)
rsi = m1; rdi = m3; rcx = 30;
asm volatile("xor %[tmp], %[tmp] \n\t"
- "repe/cmpsb"
+ "repe cmpsb"
: "+S"(rsi), "+D"(rdi), "+c"(rcx), [tmp]"=&r"(tmp)
: : "cc");
report(rcx == 0 && rsi == m1 + 30 && rdi == m3 + 30, "repe/cmpsb (1)");
rsi = m1; rdi = m3; rcx = 30;
asm volatile("or $1, %[tmp]\n\t" // clear ZF
- "repe/cmpsb"
+ "repe cmpsb"
: "+S"(rsi), "+D"(rdi), "+c"(rcx), [tmp]"=&r"(tmp)
: : "cc");
report(rcx == 0 && rsi == m1 + 30 && rdi == m3 + 30,
- "repe/cmpsb (1.zf)");
+ "repe cmpsb (1.zf)");
rsi = m1; rdi = m3; rcx = 15;
asm volatile("xor %[tmp], %[tmp] \n\t"
- "repe/cmpsw"
+ "repe cmpsw"
: "+S"(rsi), "+D"(rdi), "+c"(rcx), [tmp]"=&r"(tmp)
: : "cc");
- report(rcx == 0 && rsi == m1 + 30 && rdi == m3 + 30, "repe/cmpsw (1)");
+ report(rcx == 0 && rsi == m1 + 30 && rdi == m3 + 30, "repe cmpsw (1)");
rsi = m1; rdi = m3; rcx = 7;
asm volatile("xor %[tmp], %[tmp] \n\t"
- "repe/cmpsl"
+ "repe cmpsl"
: "+S"(rsi), "+D"(rdi), "+c"(rcx), [tmp]"=&r"(tmp)
: : "cc");
- report(rcx == 0 && rsi == m1 + 28 && rdi == m3 + 28, "repe/cmpll (1)");
+ report(rcx == 0 && rsi == m1 + 28 && rdi == m3 + 28, "repe cmpll (1)");
rsi = m1; rdi = m3; rcx = 4;
asm volatile("xor %[tmp], %[tmp] \n\t"
- "repe/cmpsq"
+ "repe cmpsq"
: "+S"(rsi), "+D"(rdi), "+c"(rcx), [tmp]"=&r"(tmp)
: : "cc");
- report(rcx == 0 && rsi == m1 + 32 && rdi == m3 + 32, "repe/cmpsq (1)");
+ report(rcx == 0 && rsi == m1 + 32 && rdi == m3 + 32, "repe cmpsq (1)");
rsi = m1; rdi = m3; rcx = 130;
asm volatile("xor %[tmp], %[tmp] \n\t"
- "repe/cmpsb"
+ "repe cmpsb"
: "+S"(rsi), "+D"(rdi), "+c"(rcx), [tmp]"=&r"(tmp)
: : "cc");
report(rcx == 29 && rsi == m1 + 101 && rdi == m3 + 101,
- "repe/cmpsb (2)");
+ "repe cmpsb (2)");
rsi = m1; rdi = m3; rcx = 65;
asm volatile("xor %[tmp], %[tmp] \n\t"
- "repe/cmpsw"
+ "repe cmpsw"
: "+S"(rsi), "+D"(rdi), "+c"(rcx), [tmp]"=&r"(tmp)
: : "cc");
report(rcx == 14 && rsi == m1 + 102 && rdi == m3 + 102,
- "repe/cmpsw (2)");
+ "repe cmpsw (2)");
rsi = m1; rdi = m3; rcx = 32;
asm volatile("xor %[tmp], %[tmp] \n\t"
- "repe/cmpsl"
+ "repe cmpsl"
: "+S"(rsi), "+D"(rdi), "+c"(rcx), [tmp]"=&r"(tmp)
: : "cc");
report(rcx == 6 && rsi == m1 + 104 && rdi == m3 + 104,
- "repe/cmpll (2)");
+ "repe cmpll (2)");
rsi = m1; rdi = m3; rcx = 16;
asm volatile("xor %[tmp], %[tmp] \n\t"
- "repe/cmpsq"
+ "repe cmpsq"
: "+S"(rsi), "+D"(rdi), "+c"(rcx), [tmp]"=&r"(tmp)
: : "cc");
report(rcx == 3 && rsi == m1 + 104 && rdi == m3 + 104,
- "repe/cmpsq (2)");
+ "repe cmpsq (2)");
}
@@ -304,8 +304,8 @@ static void test_ljmp(void *mem)
volatile int res = 1;
*(unsigned long**)m = &&jmpf;
- asm volatile ("data16/mov %%cs, %0":"=m"(*(m + sizeof(unsigned long))));
- asm volatile ("rex64/ljmp *%0"::"m"(*m));
+ asm volatile ("data16 mov %%cs, %0":"=m"(*(m + sizeof(unsigned long))));
+ asm volatile ("rex64 ljmp *%0"::"m"(*m));
res = 0;
jmpf:
report(res, "ljmp");
--
2.28.0
next prev parent reply other threads:[~2020-09-01 8:51 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-01 8:50 [kvm-unit-tests PATCH v2 00/10] Add support for generic ELF cross-compiler Roman Bolshakov
2020-09-01 8:50 ` [kvm-unit-tests PATCH v2 01/10] x86: Makefile: Allow division on x86_64-elf binutils Roman Bolshakov
2020-09-03 15:19 ` Thomas Huth
2020-09-01 8:50 ` Roman Bolshakov [this message]
2020-09-01 8:50 ` [kvm-unit-tests PATCH v2 03/10] x86: Makefile: Fix linkage of realmode " Roman Bolshakov
2020-09-01 8:50 ` [kvm-unit-tests PATCH v2 04/10] lib: Bundle debugreg.h from the kernel Roman Bolshakov
2020-09-01 8:50 ` [kvm-unit-tests PATCH v2 05/10] lib: x86: Use portable format macros for uint32_t Roman Bolshakov
2020-09-04 13:47 ` Thomas Huth
2020-09-01 8:50 ` [kvm-unit-tests PATCH v2 06/10] configure: Add an option to specify getopt Roman Bolshakov
2020-09-04 13:50 ` Thomas Huth
2020-09-22 13:53 ` Paolo Bonzini
2020-09-22 21:51 ` Roman Bolshakov
2020-09-23 2:41 ` Paolo Bonzini
2020-09-23 5:14 ` Thomas Huth
2020-09-01 8:50 ` [kvm-unit-tests PATCH v2 07/10] README: Update build instructions for macOS Roman Bolshakov
2020-09-01 8:50 ` [kvm-unit-tests PATCH v2 08/10] travis.yml: Add CI " Roman Bolshakov
2020-09-04 13:53 ` Thomas Huth
2020-09-01 8:50 ` [kvm-unit-tests PATCH v2 09/10] travis.yml: Change matrix keyword to jobs Roman Bolshakov
2020-09-04 14:20 ` Thomas Huth
2020-09-01 8:50 ` [kvm-unit-tests PATCH v2 10/10] travis.yml: Add x86 build with clang 10 Roman Bolshakov
2020-09-04 14:31 ` Thomas Huth
2020-09-14 14:45 ` Roman Bolshakov
2020-09-14 16:37 ` Thomas Huth
2020-09-15 15:59 ` Roman Bolshakov
2020-09-22 14:51 ` Paolo Bonzini
2020-09-22 21:25 ` Roman Bolshakov
2020-09-23 2:37 ` Paolo Bonzini
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200901085056.33391-3-r.bolshakov@yadro.com \
--to=r.bolshakov@yadro.com \
--cc=dirty@apple.com \
--cc=kvm@vger.kernel.org \
--cc=pbonzini@redhat.com \
--cc=thuth@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).