svn commit: r304744 - in head/sys: amd64/cloudabi32 amd64/conf conf contrib/cloudabi
Ed Schouten
ed at FreeBSD.org
Wed Aug 24 10:51:34 UTC 2016
Author: ed
Date: Wed Aug 24 10:51:33 2016
New Revision: 304744
URL: https://svnweb.freebsd.org/changeset/base/304744
Log:
Make execution of 32-bit CloudABI executables work on amd64.
A nice thing about requiring a vDSO is that it makes it incredibly easy
to provide full support for running 32-bit processes on 64-bit systems.
Instead of letting the kernel be responsible for composing/decomposing
64-bit arguments across multiple registers/stack slots, all of this can
now be done in the vDSO. This means that there is no need to provide
duplicate copies of certain system calls, like the sys_lseek() and
freebsd32_lseek() we have for COMPAT_FREEBSD32.
This change imports a new vDSO from the CloudABI repository that has
automatically generated code in it that copies system call arguments
into a buffer, padding them to eight bytes and zero-extending any
pointers/size_t arguments. After returning from the kernel, it does the
inverse: extracting return values, in the process truncating
pointers/size_t values to 32 bits.
Obtained from: https://github.com/NuxiNL/cloudabi
Added:
head/sys/amd64/cloudabi32/
head/sys/amd64/cloudabi32/cloudabi32_sysvec.c
- copied, changed from r304742, head/sys/i386/cloudabi32/cloudabi32_sysvec.c
head/sys/contrib/cloudabi/cloudabi_vdso_i686_on_64bit.S (contents, props changed)
Modified:
head/sys/amd64/conf/NOTES
head/sys/conf/files.amd64
Copied and modified: head/sys/amd64/cloudabi32/cloudabi32_sysvec.c (from r304742, head/sys/i386/cloudabi32/cloudabi32_sysvec.c)
==============================================================================
--- head/sys/i386/cloudabi32/cloudabi32_sysvec.c Wed Aug 24 10:13:18 2016 (r304742, copy source)
+++ head/sys/amd64/cloudabi32/cloudabi32_sysvec.c Wed Aug 24 10:51:33 2016 (r304744)
@@ -44,9 +44,14 @@ __FBSDID("$FreeBSD$");
#include <compat/cloudabi32/cloudabi32_syscall.h>
#include <compat/cloudabi32/cloudabi32_util.h>
+#include <compat/ia32/ia32_signal.h>
+#include <compat/ia32/ia32_util.h>
+
extern const char *cloudabi32_syscallnames[];
extern struct sysent cloudabi32_sysent[];
+extern unsigned long ia32_maxssiz;
+
static int
cloudabi32_fixup_tcb(register_t **stack_base, struct image_params *imgp)
{
@@ -80,7 +85,7 @@ cloudabi32_proc_setregs(struct thread *t
unsigned long stack)
{
- exec_setregs(td, imgp, stack);
+ ia32_setregs(td, imgp, stack);
(void)cpu_set_user_tls(td, (void *)stack);
}
@@ -91,21 +96,30 @@ cloudabi32_fetch_syscall_args(struct thr
int error;
/* Obtain system call number. */
- sa->code = frame->tf_eax;
+ sa->code = frame->tf_rax;
if (sa->code >= CLOUDABI32_SYS_MAXSYSCALL)
return (ENOSYS);
sa->callp = &cloudabi32_sysent[sa->code];
sa->narg = sa->callp->sy_narg;
- /* Fetch system call arguments from the stack. */
- error = copyin((void *)(frame->tf_esp + 4), sa->args,
+ /*
+ * Fetch system call arguments.
+ *
+ * The vDSO has already made sure that the arguments are
+ * eight-byte aligned. Pointers and size_t parameters are
+ * zero-extended. This makes it possible to copy in the
+ * arguments directly. As long as the call doesn't use 32-bit
+ * data structures, we can just invoke the same system call
+ * implementation used by 64-bit processes.
+ */
+ error = copyin((void *)frame->tf_rcx, sa->args,
sa->narg * sizeof(sa->args[0]));
if (error != 0)
return (error);
/* Default system call return values. */
td->td_retval[0] = 0;
- td->td_retval[1] = frame->tf_edx;
+ td->td_retval[1] = 0;
return (0);
}
@@ -116,21 +130,28 @@ cloudabi32_set_syscall_retval(struct thr
switch (error) {
case 0:
- /* System call succeeded. */
- frame->tf_eax = td->td_retval[0];
- frame->tf_edx = td->td_retval[1];
- frame->tf_eflags &= ~PSL_C;
+ /*
+ * System call succeeded.
+ *
+ * Simply copy out the 64-bit return values into the
+ * same buffer provided for system call arguments. The
+ * vDSO will copy them to the right spot, truncating
+ * pointers and size_t values to 32 bits.
+ */
+ frame->tf_rax = copyout(td->td_retval, (void *)frame->tf_rcx,
+ sizeof(td->td_retval)) == 0 ? 0 : CLOUDABI_EFAULT;
break;
case ERESTART:
/* Restart system call. */
- frame->tf_eip -= frame->tf_err;
+ frame->tf_rip -= frame->tf_err;
+ frame->tf_r10 = frame->tf_rcx;
+ set_pcb_flags(td->td_pcb, PCB_FULL_IRET);
break;
case EJUSTRETURN:
break;
default:
/* System call returned an error. */
- frame->tf_eax = cloudabi_convert_errno(error);
- frame->tf_eflags |= PSL_C;
+ frame->tf_rax = cloudabi_convert_errno(error);
break;
}
}
@@ -139,10 +160,14 @@ static void
cloudabi32_schedtail(struct thread *td)
{
struct trapframe *frame = td->td_frame;
+ register_t retval[2];
- /* Initial register values for processes returning from fork. */
- frame->tf_eax = CLOUDABI_PROCESS_CHILD;
- frame->tf_edx = td->td_tid;
+ /* Return values for processes returning from fork. */
+ if ((td->td_pflags & TDP_FORKING) != 0) {
+ retval[0] = CLOUDABI_PROCESS_CHILD;
+ retval[1] = td->td_tid;
+ copyout(retval, (void *)frame->tf_rcx, sizeof(retval));
+ }
}
int
@@ -167,7 +192,7 @@ cloudabi32_thread_setregs(struct thread
args[0] = tcb;
args[1] = td->td_tid;
args[2] = attr->argument;
- frameptr = (void *)td->td_frame->tf_esp;
+ frameptr = (void *)td->td_frame->tf_rsp;
error = copyout(args, frameptr, sizeof(args));
if (error != 0)
return (error);
@@ -181,12 +206,14 @@ static struct sysentvec cloudabi32_elf_s
.sv_fixup = cloudabi32_fixup_tcb,
.sv_name = "CloudABI ELF32",
.sv_coredump = elf32_coredump,
- .sv_pagesize = PAGE_SIZE,
- .sv_minuser = VM_MIN_ADDRESS,
- .sv_maxuser = VM_MAXUSER_ADDRESS,
+ .sv_pagesize = IA32_PAGE_SIZE,
+ .sv_minuser = FREEBSD32_MINUSER,
+ .sv_maxuser = FREEBSD32_MAXUSER,
.sv_stackprot = VM_PROT_READ | VM_PROT_WRITE,
.sv_copyout_strings = cloudabi32_copyout_strings,
.sv_setregs = cloudabi32_proc_setregs,
+ .sv_fixlimit = ia32_fixlimit,
+ .sv_maxssiz = &ia32_maxssiz,
.sv_flags = SV_ABI_CLOUDABI | SV_CAPSICUM | SV_IA32 | SV_ILP32,
.sv_set_syscall_retval = cloudabi32_set_syscall_retval,
.sv_fetch_syscall_args = cloudabi32_fetch_syscall_args,
Modified: head/sys/amd64/conf/NOTES
==============================================================================
--- head/sys/amd64/conf/NOTES Wed Aug 24 10:36:52 2016 (r304743)
+++ head/sys/amd64/conf/NOTES Wed Aug 24 10:51:33 2016 (r304744)
@@ -614,6 +614,9 @@ options COMPAT_FREEBSD32
# Emulate spx device for client side of SVR3 local X interface
#XXX#options SPX_HACK
+# Enable 32-bit runtime support for CloudABI binaries.
+options COMPAT_CLOUDABI32
+
# Enable 64-bit runtime support for CloudABI binaries.
options COMPAT_CLOUDABI64
Modified: head/sys/conf/files.amd64
==============================================================================
--- head/sys/conf/files.amd64 Wed Aug 24 10:36:52 2016 (r304743)
+++ head/sys/conf/files.amd64 Wed Aug 24 10:51:33 2016 (r304744)
@@ -8,6 +8,18 @@
# dependency lines other than the first are silently ignored.
#
#
+cloudabi32_vdso.o optional compat_cloudabi32 \
+ dependency "$S/contrib/cloudabi/cloudabi_vdso_i686_on_64bit.S" \
+ compile-with "${CC} -x assembler-with-cpp -m32 -shared -nostdinc -nostdlib -Wl,-T$S/compat/cloudabi/cloudabi_vdso.lds $S/contrib/cloudabi/cloudabi_vdso_i686_on_64bit.S -o ${.TARGET}" \
+ no-obj no-implicit-rule \
+ clean "cloudabi32_vdso.o"
+#
+cloudabi32_vdso_blob.o optional compat_cloudabi32 \
+ dependency "cloudabi32_vdso.o" \
+ compile-with "${OBJCOPY} --input-target binary --output-target elf64-x86-64-freebsd --binary-architecture i386 cloudabi32_vdso.o ${.TARGET}" \
+ no-implicit-rule \
+ clean "cloudabi32_vdso_blob.o"
+#
cloudabi64_vdso.o optional compat_cloudabi64 \
dependency "$S/contrib/cloudabi/cloudabi_vdso_x86_64.S" \
compile-with "${CC} -x assembler-with-cpp -shared -nostdinc -nostdlib -Wl,-T$S/compat/cloudabi/cloudabi_vdso.lds $S/contrib/cloudabi/cloudabi_vdso_x86_64.S -o ${.TARGET}" \
@@ -146,6 +158,7 @@ amd64/amd64/trap.c standard
amd64/amd64/uio_machdep.c standard
amd64/amd64/uma_machdep.c standard
amd64/amd64/vm_machdep.c standard
+amd64/cloudabi32/cloudabi32_sysvec.c optional compat_cloudabi32
amd64/cloudabi64/cloudabi64_sysvec.c optional compat_cloudabi64
amd64/pci/pci_cfgreg.c optional pci
cddl/contrib/opensolaris/common/atomic/amd64/opensolaris_atomic.S optional zfs | dtrace compile-with "${ZFS_S}"
Added: head/sys/contrib/cloudabi/cloudabi_vdso_i686_on_64bit.S
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/contrib/cloudabi/cloudabi_vdso_i686_on_64bit.S Wed Aug 24 10:51:33 2016 (r304744)
@@ -0,0 +1,1223 @@
+// Copyright (c) 2016 Nuxi (https://nuxi.nl/) and contributors.
+//
+// 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.
+//
+// This file is automatically generated. Do not edit.
+//
+// Source: https://github.com/NuxiNL/cloudabi
+
+#define ENTRY(name) \
+ .text; \
+ .p2align 2, 0x90; \
+ .global name; \
+ .type name, @function; \
+name:
+
+#define END(name) .size name, . - name
+
+ENTRY(cloudabi_sys_clock_res_get)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ mov $0, %eax
+ mov %ebp, %ecx
+ sub $16, %ecx
+ int $0x80
+ test %eax, %eax
+ jnz 1f
+ mov 12(%ebp), %ecx
+ mov -16(%ebp), %edx
+ mov %edx, 0(%ecx)
+ mov -12(%ebp), %edx
+ mov %edx, 4(%ecx)
+1:
+ pop %ebp
+ ret
+END(cloudabi_sys_clock_res_get)
+
+ENTRY(cloudabi_sys_clock_time_get)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ mov 12(%ebp), %ecx
+ mov %ecx, -8(%ebp)
+ mov 16(%ebp), %ecx
+ mov %ecx, -4(%ebp)
+ mov $1, %eax
+ mov %ebp, %ecx
+ sub $16, %ecx
+ int $0x80
+ test %eax, %eax
+ jnz 1f
+ mov 20(%ebp), %ecx
+ mov -16(%ebp), %edx
+ mov %edx, 0(%ecx)
+ mov -12(%ebp), %edx
+ mov %edx, 4(%ecx)
+1:
+ pop %ebp
+ ret
+END(cloudabi_sys_clock_time_get)
+
+ENTRY(cloudabi_sys_condvar_signal)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -24(%ebp)
+ movl $0, -20(%ebp)
+ mov 12(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ mov 16(%ebp), %ecx
+ mov %ecx, -8(%ebp)
+ mov $2, %eax
+ mov %ebp, %ecx
+ sub $24, %ecx
+ int $0x80
+ pop %ebp
+ ret
+END(cloudabi_sys_condvar_signal)
+
+ENTRY(cloudabi_sys_fd_close)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ mov $3, %eax
+ mov %ebp, %ecx
+ sub $16, %ecx
+ int $0x80
+ pop %ebp
+ ret
+END(cloudabi_sys_fd_close)
+
+ENTRY(cloudabi_sys_fd_create1)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ mov $4, %eax
+ mov %ebp, %ecx
+ sub $16, %ecx
+ int $0x80
+ test %eax, %eax
+ jnz 1f
+ mov 12(%ebp), %ecx
+ mov -16(%ebp), %edx
+ mov %edx, 0(%ecx)
+1:
+ pop %ebp
+ ret
+END(cloudabi_sys_fd_create1)
+
+ENTRY(cloudabi_sys_fd_create2)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ mov $5, %eax
+ mov %ebp, %ecx
+ sub $16, %ecx
+ int $0x80
+ test %eax, %eax
+ jnz 1f
+ mov 12(%ebp), %ecx
+ mov -16(%ebp), %edx
+ mov %edx, 0(%ecx)
+ mov 16(%ebp), %ecx
+ mov -8(%ebp), %edx
+ mov %edx, 0(%ecx)
+1:
+ pop %ebp
+ ret
+END(cloudabi_sys_fd_create2)
+
+ENTRY(cloudabi_sys_fd_datasync)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ mov $6, %eax
+ mov %ebp, %ecx
+ sub $16, %ecx
+ int $0x80
+ pop %ebp
+ ret
+END(cloudabi_sys_fd_datasync)
+
+ENTRY(cloudabi_sys_fd_dup)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ mov $7, %eax
+ mov %ebp, %ecx
+ sub $16, %ecx
+ int $0x80
+ test %eax, %eax
+ jnz 1f
+ mov 12(%ebp), %ecx
+ mov -16(%ebp), %edx
+ mov %edx, 0(%ecx)
+1:
+ pop %ebp
+ ret
+END(cloudabi_sys_fd_dup)
+
+ENTRY(cloudabi_sys_fd_pread)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -32(%ebp)
+ mov 12(%ebp), %ecx
+ mov %ecx, -24(%ebp)
+ movl $0, -20(%ebp)
+ mov 16(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ movl $0, -12(%ebp)
+ mov 20(%ebp), %ecx
+ mov %ecx, -8(%ebp)
+ mov 24(%ebp), %ecx
+ mov %ecx, -4(%ebp)
+ mov $8, %eax
+ mov %ebp, %ecx
+ sub $32, %ecx
+ int $0x80
+ test %eax, %eax
+ jnz 1f
+ mov 28(%ebp), %ecx
+ mov -32(%ebp), %edx
+ mov %edx, 0(%ecx)
+1:
+ pop %ebp
+ ret
+END(cloudabi_sys_fd_pread)
+
+ENTRY(cloudabi_sys_fd_pwrite)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -32(%ebp)
+ mov 12(%ebp), %ecx
+ mov %ecx, -24(%ebp)
+ movl $0, -20(%ebp)
+ mov 16(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ movl $0, -12(%ebp)
+ mov 20(%ebp), %ecx
+ mov %ecx, -8(%ebp)
+ mov 24(%ebp), %ecx
+ mov %ecx, -4(%ebp)
+ mov $9, %eax
+ mov %ebp, %ecx
+ sub $32, %ecx
+ int $0x80
+ test %eax, %eax
+ jnz 1f
+ mov 28(%ebp), %ecx
+ mov -32(%ebp), %edx
+ mov %edx, 0(%ecx)
+1:
+ pop %ebp
+ ret
+END(cloudabi_sys_fd_pwrite)
+
+ENTRY(cloudabi_sys_fd_read)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -24(%ebp)
+ mov 12(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ movl $0, -12(%ebp)
+ mov 16(%ebp), %ecx
+ mov %ecx, -8(%ebp)
+ movl $0, -4(%ebp)
+ mov $10, %eax
+ mov %ebp, %ecx
+ sub $24, %ecx
+ int $0x80
+ test %eax, %eax
+ jnz 1f
+ mov 20(%ebp), %ecx
+ mov -24(%ebp), %edx
+ mov %edx, 0(%ecx)
+1:
+ pop %ebp
+ ret
+END(cloudabi_sys_fd_read)
+
+ENTRY(cloudabi_sys_fd_replace)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ mov 12(%ebp), %ecx
+ mov %ecx, -8(%ebp)
+ mov $11, %eax
+ mov %ebp, %ecx
+ sub $16, %ecx
+ int $0x80
+ pop %ebp
+ ret
+END(cloudabi_sys_fd_replace)
+
+ENTRY(cloudabi_sys_fd_seek)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -24(%ebp)
+ mov 12(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ mov 16(%ebp), %ecx
+ mov %ecx, -12(%ebp)
+ mov 20(%ebp), %ecx
+ mov %ecx, -8(%ebp)
+ mov $12, %eax
+ mov %ebp, %ecx
+ sub $24, %ecx
+ int $0x80
+ test %eax, %eax
+ jnz 1f
+ mov 24(%ebp), %ecx
+ mov -24(%ebp), %edx
+ mov %edx, 0(%ecx)
+ mov -20(%ebp), %edx
+ mov %edx, 4(%ecx)
+1:
+ pop %ebp
+ ret
+END(cloudabi_sys_fd_seek)
+
+ENTRY(cloudabi_sys_fd_stat_get)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ mov 12(%ebp), %ecx
+ mov %ecx, -8(%ebp)
+ movl $0, -4(%ebp)
+ mov $13, %eax
+ mov %ebp, %ecx
+ sub $16, %ecx
+ int $0x80
+ pop %ebp
+ ret
+END(cloudabi_sys_fd_stat_get)
+
+ENTRY(cloudabi_sys_fd_stat_put)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -24(%ebp)
+ mov 12(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ movl $0, -12(%ebp)
+ mov 16(%ebp), %ecx
+ mov %ecx, -8(%ebp)
+ mov $14, %eax
+ mov %ebp, %ecx
+ sub $24, %ecx
+ int $0x80
+ pop %ebp
+ ret
+END(cloudabi_sys_fd_stat_put)
+
+ENTRY(cloudabi_sys_fd_sync)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ mov $15, %eax
+ mov %ebp, %ecx
+ sub $16, %ecx
+ int $0x80
+ pop %ebp
+ ret
+END(cloudabi_sys_fd_sync)
+
+ENTRY(cloudabi_sys_fd_write)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -24(%ebp)
+ mov 12(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ movl $0, -12(%ebp)
+ mov 16(%ebp), %ecx
+ mov %ecx, -8(%ebp)
+ movl $0, -4(%ebp)
+ mov $16, %eax
+ mov %ebp, %ecx
+ sub $24, %ecx
+ int $0x80
+ test %eax, %eax
+ jnz 1f
+ mov 20(%ebp), %ecx
+ mov -24(%ebp), %edx
+ mov %edx, 0(%ecx)
+1:
+ pop %ebp
+ ret
+END(cloudabi_sys_fd_write)
+
+ENTRY(cloudabi_sys_file_advise)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -32(%ebp)
+ mov 12(%ebp), %ecx
+ mov %ecx, -24(%ebp)
+ mov 16(%ebp), %ecx
+ mov %ecx, -20(%ebp)
+ mov 20(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ mov 24(%ebp), %ecx
+ mov %ecx, -12(%ebp)
+ mov 28(%ebp), %ecx
+ mov %ecx, -8(%ebp)
+ mov $17, %eax
+ mov %ebp, %ecx
+ sub $32, %ecx
+ int $0x80
+ pop %ebp
+ ret
+END(cloudabi_sys_file_advise)
+
+ENTRY(cloudabi_sys_file_allocate)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -24(%ebp)
+ mov 12(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ mov 16(%ebp), %ecx
+ mov %ecx, -12(%ebp)
+ mov 20(%ebp), %ecx
+ mov %ecx, -8(%ebp)
+ mov 24(%ebp), %ecx
+ mov %ecx, -4(%ebp)
+ mov $18, %eax
+ mov %ebp, %ecx
+ sub $24, %ecx
+ int $0x80
+ pop %ebp
+ ret
+END(cloudabi_sys_file_allocate)
+
+ENTRY(cloudabi_sys_file_create)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -32(%ebp)
+ mov 12(%ebp), %ecx
+ mov %ecx, -24(%ebp)
+ movl $0, -20(%ebp)
+ mov 16(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ movl $0, -12(%ebp)
+ mov 20(%ebp), %ecx
+ mov %ecx, -8(%ebp)
+ mov $19, %eax
+ mov %ebp, %ecx
+ sub $32, %ecx
+ int $0x80
+ pop %ebp
+ ret
+END(cloudabi_sys_file_create)
+
+ENTRY(cloudabi_sys_file_link)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -48(%ebp)
+ mov 12(%ebp), %ecx
+ mov %ecx, -44(%ebp)
+ mov 16(%ebp), %ecx
+ mov %ecx, -40(%ebp)
+ movl $0, -36(%ebp)
+ mov 20(%ebp), %ecx
+ mov %ecx, -32(%ebp)
+ movl $0, -28(%ebp)
+ mov 24(%ebp), %ecx
+ mov %ecx, -24(%ebp)
+ mov 28(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ movl $0, -12(%ebp)
+ mov 32(%ebp), %ecx
+ mov %ecx, -8(%ebp)
+ movl $0, -4(%ebp)
+ mov $20, %eax
+ mov %ebp, %ecx
+ sub $48, %ecx
+ int $0x80
+ pop %ebp
+ ret
+END(cloudabi_sys_file_link)
+
+ENTRY(cloudabi_sys_file_open)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -40(%ebp)
+ mov 12(%ebp), %ecx
+ mov %ecx, -36(%ebp)
+ mov 16(%ebp), %ecx
+ mov %ecx, -32(%ebp)
+ movl $0, -28(%ebp)
+ mov 20(%ebp), %ecx
+ mov %ecx, -24(%ebp)
+ movl $0, -20(%ebp)
+ mov 24(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ mov 28(%ebp), %ecx
+ mov %ecx, -8(%ebp)
+ movl $0, -4(%ebp)
+ mov $21, %eax
+ mov %ebp, %ecx
+ sub $40, %ecx
+ int $0x80
+ test %eax, %eax
+ jnz 1f
+ mov 32(%ebp), %ecx
+ mov -40(%ebp), %edx
+ mov %edx, 0(%ecx)
+1:
+ pop %ebp
+ ret
+END(cloudabi_sys_file_open)
+
+ENTRY(cloudabi_sys_file_readdir)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -32(%ebp)
+ mov 12(%ebp), %ecx
+ mov %ecx, -24(%ebp)
+ movl $0, -20(%ebp)
+ mov 16(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ movl $0, -12(%ebp)
+ mov 20(%ebp), %ecx
+ mov %ecx, -8(%ebp)
+ mov 24(%ebp), %ecx
+ mov %ecx, -4(%ebp)
+ mov $22, %eax
+ mov %ebp, %ecx
+ sub $32, %ecx
+ int $0x80
+ test %eax, %eax
+ jnz 1f
+ mov 28(%ebp), %ecx
+ mov -32(%ebp), %edx
+ mov %edx, 0(%ecx)
+1:
+ pop %ebp
+ ret
+END(cloudabi_sys_file_readdir)
+
+ENTRY(cloudabi_sys_file_readlink)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -40(%ebp)
+ mov 12(%ebp), %ecx
+ mov %ecx, -32(%ebp)
+ movl $0, -28(%ebp)
+ mov 16(%ebp), %ecx
+ mov %ecx, -24(%ebp)
+ movl $0, -20(%ebp)
+ mov 20(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ movl $0, -12(%ebp)
+ mov 24(%ebp), %ecx
+ mov %ecx, -8(%ebp)
+ movl $0, -4(%ebp)
+ mov $23, %eax
+ mov %ebp, %ecx
+ sub $40, %ecx
+ int $0x80
+ test %eax, %eax
+ jnz 1f
+ mov 28(%ebp), %ecx
+ mov -40(%ebp), %edx
+ mov %edx, 0(%ecx)
+1:
+ pop %ebp
+ ret
+END(cloudabi_sys_file_readlink)
+
+ENTRY(cloudabi_sys_file_rename)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -48(%ebp)
+ mov 12(%ebp), %ecx
+ mov %ecx, -40(%ebp)
+ movl $0, -36(%ebp)
+ mov 16(%ebp), %ecx
+ mov %ecx, -32(%ebp)
+ movl $0, -28(%ebp)
+ mov 20(%ebp), %ecx
+ mov %ecx, -24(%ebp)
+ mov 24(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ movl $0, -12(%ebp)
+ mov 28(%ebp), %ecx
+ mov %ecx, -8(%ebp)
+ movl $0, -4(%ebp)
+ mov $24, %eax
+ mov %ebp, %ecx
+ sub $48, %ecx
+ int $0x80
+ pop %ebp
+ ret
+END(cloudabi_sys_file_rename)
+
+ENTRY(cloudabi_sys_file_stat_fget)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ mov 12(%ebp), %ecx
+ mov %ecx, -8(%ebp)
+ movl $0, -4(%ebp)
+ mov $25, %eax
+ mov %ebp, %ecx
+ sub $16, %ecx
+ int $0x80
+ pop %ebp
+ ret
+END(cloudabi_sys_file_stat_fget)
+
+ENTRY(cloudabi_sys_file_stat_fput)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -24(%ebp)
+ mov 12(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ movl $0, -12(%ebp)
+ mov 16(%ebp), %ecx
+ mov %ecx, -8(%ebp)
+ mov $26, %eax
+ mov %ebp, %ecx
+ sub $24, %ecx
+ int $0x80
+ pop %ebp
+ ret
+END(cloudabi_sys_file_stat_fput)
+
+ENTRY(cloudabi_sys_file_stat_get)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -32(%ebp)
+ mov 12(%ebp), %ecx
+ mov %ecx, -28(%ebp)
+ mov 16(%ebp), %ecx
+ mov %ecx, -24(%ebp)
+ movl $0, -20(%ebp)
+ mov 20(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ movl $0, -12(%ebp)
+ mov 24(%ebp), %ecx
+ mov %ecx, -8(%ebp)
+ movl $0, -4(%ebp)
+ mov $27, %eax
+ mov %ebp, %ecx
+ sub $32, %ecx
+ int $0x80
+ pop %ebp
+ ret
+END(cloudabi_sys_file_stat_get)
+
+ENTRY(cloudabi_sys_file_stat_put)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -40(%ebp)
+ mov 12(%ebp), %ecx
+ mov %ecx, -36(%ebp)
+ mov 16(%ebp), %ecx
+ mov %ecx, -32(%ebp)
+ movl $0, -28(%ebp)
+ mov 20(%ebp), %ecx
+ mov %ecx, -24(%ebp)
+ movl $0, -20(%ebp)
+ mov 24(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ movl $0, -12(%ebp)
+ mov 28(%ebp), %ecx
+ mov %ecx, -8(%ebp)
+ mov $28, %eax
+ mov %ebp, %ecx
+ sub $40, %ecx
+ int $0x80
+ pop %ebp
+ ret
+END(cloudabi_sys_file_stat_put)
+
+ENTRY(cloudabi_sys_file_symlink)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -40(%ebp)
+ movl $0, -36(%ebp)
+ mov 12(%ebp), %ecx
+ mov %ecx, -32(%ebp)
+ movl $0, -28(%ebp)
+ mov 16(%ebp), %ecx
+ mov %ecx, -24(%ebp)
+ mov 20(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ movl $0, -12(%ebp)
+ mov 24(%ebp), %ecx
+ mov %ecx, -8(%ebp)
+ movl $0, -4(%ebp)
+ mov $29, %eax
+ mov %ebp, %ecx
+ sub $40, %ecx
+ int $0x80
+ pop %ebp
+ ret
+END(cloudabi_sys_file_symlink)
+
+ENTRY(cloudabi_sys_file_unlink)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -32(%ebp)
+ mov 12(%ebp), %ecx
+ mov %ecx, -24(%ebp)
+ movl $0, -20(%ebp)
+ mov 16(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ movl $0, -12(%ebp)
+ mov 20(%ebp), %ecx
+ mov %ecx, -8(%ebp)
+ mov $30, %eax
+ mov %ebp, %ecx
+ sub $32, %ecx
+ int $0x80
+ pop %ebp
+ ret
+END(cloudabi_sys_file_unlink)
+
+ENTRY(cloudabi_sys_lock_unlock)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ movl $0, -12(%ebp)
+ mov 12(%ebp), %ecx
+ mov %ecx, -8(%ebp)
+ mov $31, %eax
+ mov %ebp, %ecx
+ sub $16, %ecx
+ int $0x80
+ pop %ebp
+ ret
+END(cloudabi_sys_lock_unlock)
+
+ENTRY(cloudabi_sys_mem_advise)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -24(%ebp)
+ movl $0, -20(%ebp)
+ mov 12(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ movl $0, -12(%ebp)
+ mov 16(%ebp), %ecx
+ mov %ecx, -8(%ebp)
+ mov $32, %eax
+ mov %ebp, %ecx
+ sub $24, %ecx
+ int $0x80
+ pop %ebp
+ ret
+END(cloudabi_sys_mem_advise)
+
+ENTRY(cloudabi_sys_mem_lock)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ movl $0, -12(%ebp)
+ mov 12(%ebp), %ecx
+ mov %ecx, -8(%ebp)
+ movl $0, -4(%ebp)
+ mov $33, %eax
+ mov %ebp, %ecx
+ sub $16, %ecx
+ int $0x80
+ pop %ebp
+ ret
+END(cloudabi_sys_mem_lock)
+
+ENTRY(cloudabi_sys_mem_map)
+ push %ebp
+ mov %esp, %ebp
+ mov 8(%ebp), %ecx
+ mov %ecx, -48(%ebp)
+ movl $0, -44(%ebp)
+ mov 12(%ebp), %ecx
+ mov %ecx, -40(%ebp)
+ movl $0, -36(%ebp)
+ mov 16(%ebp), %ecx
+ mov %ecx, -32(%ebp)
+ mov 20(%ebp), %ecx
+ mov %ecx, -24(%ebp)
+ mov 24(%ebp), %ecx
+ mov %ecx, -16(%ebp)
+ mov 28(%ebp), %ecx
+ mov %ecx, -8(%ebp)
+ mov 32(%ebp), %ecx
+ mov %ecx, -4(%ebp)
+ mov $34, %eax
+ mov %ebp, %ecx
+ sub $48, %ecx
+ int $0x80
+ test %eax, %eax
+ jnz 1f
+ mov 36(%ebp), %ecx
+ mov -48(%ebp), %edx
+ mov %edx, 0(%ecx)
+1:
+ pop %ebp
+ ret
+END(cloudabi_sys_mem_map)
+
+ENTRY(cloudabi_sys_mem_protect)
+ push %ebp
+ mov %esp, %ebp
*** DIFF OUTPUT TRUNCATED AT 1000 LINES ***
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