Author: trasz
Date: Sun Aug 23 21:38:48 2020
New Revision: 364552
URL: https://svnweb.freebsd.org/changeset/base/364552
Log:
MFC r350451 by emaste:
linuxulator: rename linux_locore.s to .asm
It is assembled using "${CC} -x assembler-with-cpp", which by convention
(bsd.suffixes.mk) uses the .asm extension.
This is a portion of the review referenced below (D18344). That review
also renamed linux_support.s to .S, but that is a functional change
(using the compiler's integrated assembler instead of as) and will be
revisited separately.
Sponsored by: The FreeBSD Foundation
Added:
stable/12/sys/amd64/linux/linux_locore.asm
- copied unchanged from r350451, head/sys/amd64/linux/linux_locore.asm
stable/12/sys/amd64/linux32/linux32_locore.asm
- copied unchanged from r350451, head/sys/amd64/linux32/linux32_locore.asm
stable/12/sys/arm64/linux/linux_locore.asm
- copied unchanged from r350451, head/sys/arm64/linux/linux_locore.asm
stable/12/sys/i386/linux/linux_locore.asm
- copied unchanged from r350451, head/sys/i386/linux/linux_locore.asm
Deleted:
stable/12/sys/amd64/linux/linux_locore.s
stable/12/sys/amd64/linux32/linux32_locore.s
stable/12/sys/arm64/linux/linux_locore.s
stable/12/sys/i386/linux/linux_locore.s
Modified:
stable/12/sys/conf/files.amd64
stable/12/sys/conf/files.i386
stable/12/sys/modules/linux64/Makefile
Directory Properties:
stable/12/ (props changed)
Copied: stable/12/sys/amd64/linux/linux_locore.asm (from r350451,
head/sys/amd64/linux/linux_locore.asm)
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ stable/12/sys/amd64/linux/linux_locore.asm Sun Aug 23 21:38:48 2020
(r364552, copy of r350451, head/sys/amd64/linux/linux_locore.asm)
@@ -0,0 +1,108 @@
+/* $FreeBSD$ */
+
+#include "linux_assym.h" /* system definitions */
+#include <machine/asmacros.h> /* miscellaneous asm macros */
+
+#include <amd64/linux/linux_syscall.h> /* system call numbers */
+
+ .data
+
+ .globl linux_platform
+linux_platform:
+ .asciz "x86_64"
+
+
+ .text
+/*
+ * To avoid excess stack frame the signal trampoline code emulates
+ * the 'call' instruction.
+ */
+NON_GPROF_ENTRY(linux_rt_sigcode)
+ movq %rsp, %rbx /* preserve sigframe */
+ call .getip
+.getip:
+ popq %rax
+ add $.startrtsigcode-.getip, %rax /* ret address */
+ pushq %rax
+ jmp *LINUX_RT_SIGF_HANDLER(%rbx)
+.startrtsigcode:
+ movq $LINUX_SYS_linux_rt_sigreturn,%rax /* linux_rt_sigreturn() */
+ syscall /* enter kernel with args */
+ hlt
+.endrtsigcode:
+0: jmp 0b
+
+NON_GPROF_ENTRY(__vdso_clock_gettime)
+ movq $LINUX_SYS_linux_clock_gettime,%rax
+ syscall
+ ret
+.weak clock_gettime
+.set clock_gettime, __vdso_clock_gettime
+
+NON_GPROF_ENTRY(__vdso_time)
+ movq $LINUX_SYS_linux_time,%rax
+ syscall
+ ret
+.weak time
+.set time, __vdso_time
+
+NON_GPROF_ENTRY(__vdso_gettimeofday)
+ movq $LINUX_SYS_gettimeofday,%rax
+ syscall
+ ret
+.weak gettimeofday
+.set gettimeofday, __vdso_gettimeofday
+
+NON_GPROF_ENTRY(__vdso_getcpu)
+ movq $-38,%rax /* not implemented */
+ ret
+.weak getcpu
+.set getcpu, __vdso_getcpu
+
+#if 0
+ .section .note.Linux, "a",@note
+ .long 2f - 1f /* namesz */
+ .balign 4
+ .long 4f - 3f /* descsz */
+ .long 0
+1:
+ .asciz "Linux"
+2:
+ .balign 4
+3:
+ .long LINUX_VERSION_CODE
+4:
+ .balign 4
+ .previous
+#endif
+
+ .section .eh_frame,"a",@progbits
+.LSTARTFRAMEDLSI0:
+ .long .LENDCIEDLSI0-.LSTARTCIEDLSI0
+.LSTARTCIEDLSI0:
+ .long 0 /* CIE ID */
+ .byte 1 /* Version number */
+ .string "zR" /* NULL-terminated
+ * augmentation string
+ */
+ .uleb128 1 /* Code alignment factor */
+ .sleb128 -4 /* Data alignment factor */
+ .byte 8 /* Return address register
column */
+ .uleb128 1 /* Augmentation value length */
+ .byte 0x1b /*
DW_EH_PE_pcrel|DW_EH_PE_sdata4. */
+ .byte 0x0c /* DW_CFA_def_cfa */
+ .uleb128 4
+ .uleb128 4
+ .byte 0x88 /* DW_CFA_offset, column 0x8 */
+ .uleb128 1
+ .align 4
+.LENDCIEDLSI0:
+ .long .LENDFDEDLSI0-.LSTARTFDEDLSI0 /* Length FDE */
+.LSTARTFDEDLSI0:
+ .long .LSTARTFDEDLSI0-.LSTARTFRAMEDLSI0 /* CIE pointer */
+ .long .startrtsigcode-. /* PC-relative start address */
+ .long .endrtsigcode-.startrtsigcode
+ .uleb128 0
+ .align 4
+.LENDFDEDLSI0:
+ .previous
Copied: stable/12/sys/amd64/linux32/linux32_locore.asm (from r350451,
head/sys/amd64/linux32/linux32_locore.asm)
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ stable/12/sys/amd64/linux32/linux32_locore.asm Sun Aug 23 21:38:48
2020 (r364552, copy of r350451,
head/sys/amd64/linux32/linux32_locore.asm)
@@ -0,0 +1,156 @@
+/* $FreeBSD$ */
+
+#include "linux32_assym.h" /* system definitions */
+#include <machine/asmacros.h> /* miscellaneous asm macros */
+
+#include <amd64/linux32/linux32_syscall.h> /* system call numbers */
+
+.data
+
+ .globl linux_platform
+linux_platform:
+ .asciz "i686"
+
+.text
+.code32
+
+/*
+ * To avoid excess stack frame the signal trampoline code emulates
+ * the 'call' instruction.
+ */
+NON_GPROF_ENTRY(linux32_sigcode)
+ movl %esp, %ebx /* preserve sigframe */
+ call .getip0
+.getip0:
+ popl %eax
+ add $.startsigcode-.getip0, %eax /* ret address */
+ push %eax
+ jmp *LINUX_SIGF_HANDLER(%ebx)
+.startsigcode:
+ popl %eax
+ movl $LINUX32_SYS_linux_sigreturn,%eax /* linux_sigreturn() */
+ int $0x80 /* enter kernel with args */
+.endsigcode:
+0: jmp 0b
+
+NON_GPROF_ENTRY(linux32_rt_sigcode)
+ leal LINUX_RT_SIGF_UC(%esp),%ebx /* linux ucp */
+ leal LINUX_RT_SIGF_SC(%ebx),%ecx /* linux sigcontext */
+ movl %esp, %edi
+ call .getip1
+.getip1:
+ popl %eax
+ add $.startrtsigcode-.getip1, %eax /* ret address */
+ push %eax
+ jmp *LINUX_RT_SIGF_HANDLER(%edi)
+.startrtsigcode:
+ movl $LINUX32_SYS_linux_rt_sigreturn,%eax /* linux_rt_sigreturn()
*/
+ int $0x80 /* enter kernel with args */
+.endrtsigcode:
+0: jmp 0b
+
+NON_GPROF_ENTRY(linux32_vsyscall)
+.startvsyscall:
+ int $0x80
+ ret
+.endvsyscall:
+
+#if 0
+ .section .note.Linux, "a",@note
+ .long 2f - 1f /* namesz */
+ .balign 4
+ .long 4f - 3f /* descsz */
+ .long 0
+1:
+ .asciz "Linux"
+2:
+ .balign 4
+3:
+ .long LINUX_VERSION_CODE
+4:
+ .balign 4
+ .previous
+#endif
+
+#define do_cfa_expr(offset) \
+ .byte 0x0f; /* DW_CFA_def_cfa_expression */ \
+ .uleb128 11f-10f; /* length */ \
+10: .byte 0x74; /* DW_OP_breg4 */ \
+ .sleb128 offset; /* offset */ \
+ .byte 0x06; /* DW_OP_deref */ \
+11:
+
+
+ /* CIE */
+ .section .eh_frame,"a",@progbits
+.LSTARTFRAMEDLSI1:
+ .long .LENDCIEDLSI1-.LSTARTCIEDLSI1
+.LSTARTCIEDLSI1:
+ .long 0 /* CIE ID */
+ .byte 1 /* Version number */
+ .string "zRS" /* NULL-terminated
+ * augmentation string
+ */
+ .uleb128 1 /* Code alignment factor */
+ .sleb128 -4 /* Data alignment factor */
+ .byte 8 /* Return address
+ * register column
+ */
+ .uleb128 1 /* Augmentation value length */
+ .byte 0x1b /*
DW_EH_PE_pcrel|DW_EH_PE_sdata4. */
+ .byte 0 /* DW_CFA_nop */
+ .align 4
+.LENDCIEDLSI1:
+
+ /* FDE */
+ .long .LENDFDEDLSI1-.LSTARTFDEDLSI1 /* Length FDE */
+.LSTARTFDEDLSI1:
+ .long .LSTARTFDEDLSI1-.LSTARTFRAMEDLSI1 /* CIE pointer */
+ .long .startsigcode-. /* PC-relative start address */
+ .long .endsigcode-.startsigcode
+ .uleb128 0 /* Augmentation */
+ do_cfa_expr(LINUX_SIGF_SC-8)
+ .align 4
+.LENDFDEDLSI1:
+
+ .long .LENDFDEDLSI2-.LSTARTFDEDLSI2 /* Length FDE */
+.LSTARTFDEDLSI2:
+ .long .LSTARTFDEDLSI2-.LSTARTFRAMEDLSI1 /* CIE pointer */
+ .long .startrtsigcode-. /* PC-relative start address */
+ .long .endrtsigcode-.startrtsigcode
+ .uleb128 0 /* Augmentation */
+ do_cfa_expr(LINUX_RT_SIGF_SC-4+LINUX_SC_ESP)
+ .align 4
+.LENDFDEDLSI2:
+ .previous
+
+ .section .eh_frame,"a",@progbits
+.LSTARTFRAMEDLSI2:
+ .long .LENDCIEDLSI2-.LSTARTCIEDLSI2
+.LSTARTCIEDLSI2:
+ .long 0 /* CIE ID */
+ .byte 1 /* Version number */
+ .string "zR" /* NULL-terminated
+ * augmentation string
+ */
+ .uleb128 1 /* Code alignment factor */
+ .sleb128 -4 /* Data alignment factor */
+ .byte 8 /* Return address register
column */
+ .uleb128 1 /* Augmentation value length */
+ .byte 0x1b /*
DW_EH_PE_pcrel|DW_EH_PE_sdata4. */
+ .byte 0x0c /* DW_CFA_def_cfa */
+ .uleb128 4
+ .uleb128 4
+ .byte 0x88 /* DW_CFA_offset, column 0x8 */
+ .uleb128 1
+ .align 4
+.LENDCIEDLSI2:
+ .long .LENDFDEDLSI3-.LSTARTFDEDLSI3 /* Length FDE */
+.LSTARTFDEDLSI3:
+ .long .LSTARTFDEDLSI3-.LSTARTFRAMEDLSI2 /* CIE pointer */
+ .long .startvsyscall-. /* PC-relative start address */
+ .long .endvsyscall-.startvsyscall
+ .uleb128 0
+ .align 4
+.LENDFDEDLSI3:
+ .previous
Copied: stable/12/sys/arm64/linux/linux_locore.asm (from r350451,
head/sys/arm64/linux/linux_locore.asm)
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ stable/12/sys/arm64/linux/linux_locore.asm Sun Aug 23 21:38:48 2020
(r364552, copy of r350451, head/sys/arm64/linux/linux_locore.asm)
@@ -0,0 +1,58 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (C) 2018 Turing Robotic Industries Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+/*
+ * arm64 Linux VDSO implementation.
+ */
+
+#include <machine/asm.h>
+
+ .data
+
+ .globl linux_platform
+linux_platform:
+ .asciz "arm64"
+
+ .text
+
+ENTRY(__kernel_rt_sigreturn)
+ brk #0 /* LINUXTODO: implement __kernel_rt_sigreturn */
+ ret
+
+ENTRY(__kernel_gettimeofday)
+ brk #0 /* LINUXTODO: implement __kernel_gettimeofday */
+ ret
+
+ENTRY(__kernel_clock_gettime)
+ brk #0 /* LINUXTODO: implement __kernel_clock_gettime */
+ ret
+
+ENTRY(__kernel_clock_getres)
+ brk #0 /* LINUXTODO: implement __kernel_clock_getres */
+ ret
Modified: stable/12/sys/conf/files.amd64
==============================================================================
--- stable/12/sys/conf/files.amd64 Sun Aug 23 21:37:20 2020
(r364551)
+++ stable/12/sys/conf/files.amd64 Sun Aug 23 21:38:48 2020
(r364552)
@@ -45,7 +45,7 @@ linux32_assym.h optional
compat_linux32 \
clean "linux32_assym.h"
#
linux32_locore.o optional compat_linux32 \
- dependency "linux32_assym.h $S/amd64/linux32/linux32_locore.s"
\
+ dependency "linux32_assym.h $S/amd64/linux32/linux32_locore.asm"
\
compile-with "${CC} -x assembler-with-cpp -DLOCORE -m32 -shared -s
-pipe -I. -I$S ${WERROR} -Wall -fPIC -fno-common -nostdinc -nostdlib
-Wl,-T$S/amd64/linux32/linux32_vdso.lds.s
-Wl,-soname=linux32_vdso.so,--eh-frame-hdr,-warn-common ${.IMPSRC} -o
${.TARGET}" \
no-obj no-implicit-rule \
clean "linux32_locore.o"
Modified: stable/12/sys/conf/files.i386
==============================================================================
--- stable/12/sys/conf/files.i386 Sun Aug 23 21:37:20 2020
(r364551)
+++ stable/12/sys/conf/files.i386 Sun Aug 23 21:38:48 2020
(r364552)
@@ -32,7 +32,7 @@ linux_assym.h optional compat_linux
\
clean "linux_assym.h"
#
linux_locore.o optional compat_linux \
- dependency "linux_assym.h $S/i386/linux/linux_locore.s" \
+ dependency "linux_assym.h $S/i386/linux/linux_locore.asm" \
compile-with "${CC} -x assembler-with-cpp -DLOCORE -shared -s -pipe
-I. -I$S ${WERROR} -Wall -fPIC -fno-common -nostdinc -nostdlib
-Wl,-T$S/i386/linux/linux_vdso.lds.s
-Wl,-soname=linux_vdso.so,--eh-frame-hdr,-warn-common ${.IMPSRC} -o ${.TARGET}"
\
no-obj no-implicit-rule \
clean "linux_locore.o"
Copied: stable/12/sys/i386/linux/linux_locore.asm (from r350451,
head/sys/i386/linux/linux_locore.asm)
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ stable/12/sys/i386/linux/linux_locore.asm Sun Aug 23 21:38:48 2020
(r364552, copy of r350451, head/sys/i386/linux/linux_locore.asm)
@@ -0,0 +1,149 @@
+/* $FreeBSD$ */
+
+#include "linux_assym.h" /* system definitions */
+#include <machine/asmacros.h> /* miscellaneous asm macros */
+
+#include <i386/linux/linux_syscall.h> /* system call numbers */
+
+#include "assym.inc"
+
+/*
+ * To avoid excess stack frame the signal trampoline code emulates
+ * the 'call' instruction.
+ */
+NON_GPROF_ENTRY(linux_sigcode)
+ movl %esp, %ebx /* preserve sigframe */
+ call .getip0
+.getip0:
+ popl %eax
+ add $.startsigcode-.getip0, %eax /* ret address */
+ push %eax
+ jmp *LINUX_SIGF_HANDLER(%ebx)
+.startsigcode:
+ popl %eax /* gcc unwind code need this */
+ movl $LINUX_SYS_linux_sigreturn,%eax /* linux_sigreturn() */
+ int $0x80 /* enter kernel with args */
+.endsigcode:
+0: jmp 0b
+
+NON_GPROF_ENTRY(linux_rt_sigcode)
+ leal LINUX_RT_SIGF_UC(%esp),%ebx /* linux ucp */
+ leal LINUX_RT_SIGF_SC(%ebx),%ecx /* linux sigcontext */
+ movl %esp, %edi
+ call .getip1
+.getip1:
+ popl %eax
+ add $.startrtsigcode-.getip1, %eax /* ret address */
+ push %eax
+ jmp *LINUX_RT_SIGF_HANDLER(%edi)
+.startrtsigcode:
+ movl $LINUX_SYS_linux_rt_sigreturn,%eax /* linux_rt_sigreturn() */
+ int $0x80 /* enter kernel with args */
+.endrtsigcode:
+0: jmp 0b
+
+NON_GPROF_ENTRY(linux_vsyscall)
+.startvsyscall:
+ int $0x80
+ ret
+.endvsyscall:
+
+#if 0
+ .section .note.Linux, "a",@note
+ .long 2f - 1f /* namesz */
+ .balign 4
+ .long 4f - 3f /* descsz */
+ .long 0
+1:
+ .asciz "Linux"
+2:
+ .balign 4
+3:
+ .long LINUX_VERSION_CODE
+4:
+ .balign 4
+ .previous
+#endif
+
+#define do_cfa_expr(offset) \
+ .byte 0x0f; /* DW_CFA_def_cfa_expression */ \
+ .uleb128 11f-10f; /* length */ \
+10: .byte 0x74; /* DW_OP_breg4 */ \
+ .sleb128 offset; /* offset */ \
+ .byte 0x06; /* DW_OP_deref */ \
+11:
+
+
+ /* CIE */
+ .section .eh_frame,"a",@progbits
+.LSTARTFRAMEDLSI1:
+ .long .LENDCIEDLSI1-.LSTARTCIEDLSI1
+.LSTARTCIEDLSI1:
+ .long 0 /* CIE ID */
+ .byte 1 /* Version number */
+ .string "zRS" /* NULL-terminated
+ * augmentation string
+ */
+ .uleb128 1 /* Code alignment factor */
+ .sleb128 -4 /* Data alignment factor */
+ .byte 8 /* Return address
+ * register column
+ */
+ .uleb128 1 /* Augmentation value length */
+ .byte 0x1b /*
DW_EH_PE_pcrel|DW_EH_PE_sdata4. */
+ .byte 0 /* DW_CFA_nop */
+ .align 4
+.LENDCIEDLSI1:
+
+ /* FDE */
+ .long .LENDFDEDLSI1-.LSTARTFDEDLSI1 /* Length FDE */
+.LSTARTFDEDLSI1:
+ .long .LSTARTFDEDLSI1-.LSTARTFRAMEDLSI1 /* CIE pointer */
+ .long .startsigcode-. /* PC-relative start address */
+ .long .endsigcode-.startsigcode
+ .uleb128 0 /* Augmentation */
+ do_cfa_expr(LINUX_SIGF_SC-8)
+ .align 4
+.LENDFDEDLSI1:
+
+ .long .LENDFDEDLSI2-.LSTARTFDEDLSI2 /* Length FDE */
+.LSTARTFDEDLSI2:
+ .long .LSTARTFDEDLSI2-.LSTARTFRAMEDLSI1 /* CIE pointer */
+ .long .startrtsigcode-. /* PC-relative start address */
+ .long .endrtsigcode-.startrtsigcode
+ .uleb128 0 /* Augmentation */
+ do_cfa_expr(LINUX_RT_SIGF_SC-4+LINUX_SC_ESP)
+ .align 4
+.LENDFDEDLSI2:
+ .previous
+
+ .section .eh_frame,"a",@progbits
+.LSTARTFRAMEDLSI2:
+ .long .LENDCIEDLSI2-.LSTARTCIEDLSI2
+.LSTARTCIEDLSI2:
+ .long 0 /* CIE ID */
+ .byte 1 /* Version number */
+ .string "zR" /* NULL-terminated
+ * augmentation string
+ */
+ .uleb128 1 /* Code alignment factor */
+ .sleb128 -4 /* Data alignment factor */
+ .byte 8 /* Return address register
column */
+ .uleb128 1 /* Augmentation value length */
+ .byte 0x1b /*
DW_EH_PE_pcrel|DW_EH_PE_sdata4. */
+ .byte 0x0c /* DW_CFA_def_cfa */
+ .uleb128 4
+ .uleb128 4
+ .byte 0x88 /* DW_CFA_offset, column 0x8 */
+ .uleb128 1
+ .align 4
+.LENDCIEDLSI2:
+ .long .LENDFDEDLSI3-.LSTARTFDEDLSI3 /* Length FDE */
+.LSTARTFDEDLSI3:
+ .long .LSTARTFDEDLSI3-.LSTARTFRAMEDLSI2 /* CIE pointer */
+ .long .startvsyscall-. /* PC-relative start address */
+ .long .endvsyscall-.startvsyscall
+ .uleb128 0
+ .align 4
+.LENDFDEDLSI3:
+ .previous
Modified: stable/12/sys/modules/linux64/Makefile
==============================================================================
--- stable/12/sys/modules/linux64/Makefile Sun Aug 23 21:37:20 2020
(r364551)
+++ stable/12/sys/modules/linux64/Makefile Sun Aug 23 21:38:48 2020
(r364552)
@@ -29,7 +29,7 @@ OBJS= ${VDSO}.so
linux_assym.h: linux_genassym.o
sh ${SYSDIR}/kern/genassym.sh linux_genassym.o > ${.TARGET}
-linux_locore.o: linux_locore.s linux_assym.h
+linux_locore.o: linux_locore.asm linux_assym.h
${CC} -x assembler-with-cpp -DLOCORE -shared -mcmodel=small \
-pipe -I. -I${SYSDIR} ${WERROR} -Wall -fno-common -fPIC -nostdinc
\
-Wl,-T${SRCTOP}/sys/${MACHINE}/linux/${VDSO}.lds.s \
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