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Index: head/sys/amd64/cloudabi64/cloudabi64_sysvec.c
===================================================================
--- head/sys/amd64/cloudabi64/cloudabi64_sysvec.c
+++ head/sys/amd64/cloudabi64/cloudabi64_sysvec.c
@@ -0,0 +1,230 @@
+/*-
+ * Copyright (c) 2015 Nuxi, https://nuxi.nl/
+ *
+ * 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.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/exec.h>
+#include <sys/imgact.h>
+#include <sys/imgact_elf.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/proc.h>
+#include <sys/smp.h>
+#include <sys/sysent.h>
+#include <sys/systm.h>
+
+#include <vm/pmap.h>
+#include <vm/vm.h>
+
+#include <machine/frame.h>
+#include <machine/pcb.h>
+#include <machine/pmap.h>
+#include <machine/psl.h>
+#include <machine/vmparam.h>
+
+#include <compat/cloudabi/cloudabi_util.h>
+
+#include <compat/cloudabi64/cloudabi64_syscall.h>
+#include <compat/cloudabi64/cloudabi64_syscalldefs.h>
+
+extern const char *cloudabi64_syscallnames[];
+extern struct sysent cloudabi64_sysent[];
+
+static register_t *
+cloudabi64_copyout_strings(struct image_params *imgp)
+{
+ uintptr_t begin;
+ size_t len;
+
+ /* Copy out program arguments. */
+ len = imgp->args->begin_envv - imgp->args->begin_argv;
+ begin = rounddown2(USRSTACK - len, sizeof(register_t));
+ copyout(imgp->args->begin_argv, (void *)begin, len);
+ return ((register_t *)begin);
+}
+
+static int
+cloudabi64_fixup(register_t **stack_base, struct image_params *imgp)
+{
+ char canarybuf[64];
+ Elf64_Auxargs *args;
+ void *argdata, *canary;
+ size_t argdatalen;
+ int error;
+
+ /* Store canary for stack smashing protection. */
+ argdata = *stack_base;
+ arc4rand(canarybuf, sizeof(canarybuf), 0);
+ *stack_base -= howmany(sizeof(canarybuf), sizeof(register_t));
+ canary = *stack_base;
+ error = copyout(canarybuf, canary, sizeof(canarybuf));
+ if (error != 0)
+ return (error);
+
+ /*
+ * Compute length of program arguments. As the argument data is
+ * binary safe, we had to add a trailing null byte in
+ * exec_copyin_data_fds(). Undo this by reducing the length.
+ */
+ args = (Elf64_Auxargs *)imgp->auxargs;
+ argdatalen = imgp->args->begin_envv - imgp->args->begin_argv;
+ if (argdatalen > 0)
+ --argdatalen;
+
+ /* Write out an auxiliary vector. */
+ cloudabi64_auxv_t auxv[] = {
+#define VAL(type, val) { .a_type = (type), .a_val = (val) }
+#define PTR(type, ptr) { .a_type = (type), .a_ptr = (uintptr_t)(ptr) }
+ PTR(CLOUDABI_AT_ARGDATA, argdata),
+ VAL(CLOUDABI_AT_ARGDATALEN, argdatalen),
+ PTR(CLOUDABI_AT_CANARY, canary),
+ VAL(CLOUDABI_AT_CANARYLEN, sizeof(canarybuf)),
+ VAL(CLOUDABI_AT_NCPUS, mp_ncpus),
+ VAL(CLOUDABI_AT_PAGESZ, args->pagesz),
+ PTR(CLOUDABI_AT_PHDR, args->phdr),
+ VAL(CLOUDABI_AT_PHNUM, args->phnum),
+ VAL(CLOUDABI_AT_TID, curthread->td_tid),
+#undef VAL
+#undef PTR
+ { .a_type = CLOUDABI_AT_NULL },
+ };
+ *stack_base -= howmany(sizeof(auxv), sizeof(register_t));
+ return (copyout(auxv, *stack_base, sizeof(auxv)));
+}
+
+static int
+cloudabi64_fetch_syscall_args(struct thread *td, struct syscall_args *sa)
+{
+ struct trapframe *frame = td->td_frame;
+
+ /* Obtain system call number. */
+ sa->code = frame->tf_rax;
+ if (sa->code >= CLOUDABI64_SYS_MAXSYSCALL)
+ return (ENOSYS);
+ sa->callp = &cloudabi64_sysent[sa->code];
+
+ /* Fetch system call arguments. */
+ sa->args[0] = frame->tf_rdi;
+ sa->args[1] = frame->tf_rsi;
+ sa->args[2] = frame->tf_rdx;
+ sa->args[3] = frame->tf_rcx; /* Actually %r10. */
+ sa->args[4] = frame->tf_r8;
+ sa->args[5] = frame->tf_r9;
+
+ /* Default system call return values. */
+ td->td_retval[0] = 0;
+ td->td_retval[1] = frame->tf_rdx;
+ return (0);
+}
+
+static void
+cloudabi64_set_syscall_retval(struct thread *td, int error)
+{
+ struct trapframe *frame = td->td_frame;
+
+ switch (error) {
+ case 0:
+ /* System call succeeded. */
+ frame->tf_rax = td->td_retval[0];
+ frame->tf_rdx = td->td_retval[1];
+ frame->tf_rflags &= ~PSL_C;
+ break;
+ case ERESTART:
+ /* Restart system call. */
+ 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_rax = cloudabi_convert_errno(error);
+ frame->tf_rflags |= PSL_C;
+ break;
+ }
+}
+
+static struct sysentvec cloudabi64_elf_sysvec = {
+ .sv_size = CLOUDABI64_SYS_MAXSYSCALL,
+ .sv_table = cloudabi64_sysent,
+ .sv_fixup = cloudabi64_fixup,
+ .sv_name = "CloudABI ELF64",
+ .sv_coredump = elf64_coredump,
+ .sv_pagesize = PAGE_SIZE,
+ .sv_minuser = VM_MIN_ADDRESS,
+ .sv_maxuser = VM_MAXUSER_ADDRESS,
+ .sv_usrstack = USRSTACK,
+ .sv_stackprot = VM_PROT_READ | VM_PROT_WRITE,
+ .sv_copyout_strings = cloudabi64_copyout_strings,
+ .sv_flags = SV_ABI_CLOUDABI,
+ .sv_set_syscall_retval = cloudabi64_set_syscall_retval,
+ .sv_fetch_syscall_args = cloudabi64_fetch_syscall_args,
+ .sv_syscallnames = cloudabi64_syscallnames,
+};
+
+INIT_SYSENTVEC(elf_sysvec, &cloudabi64_elf_sysvec);
+
+static Elf64_Brandinfo cloudabi64_brand = {
+ .brand = ELFOSABI_CLOUDABI,
+ .machine = EM_X86_64,
+ .sysvec = &cloudabi64_elf_sysvec,
+ .compat_3_brand = "CloudABI",
+};
+
+static int
+cloudabi64_modevent(module_t mod, int type, void *data)
+{
+
+ switch (type) {
+ case MOD_LOAD:
+ if (elf64_insert_brand_entry(&cloudabi64_brand) < 0) {
+ printf("Failed to add CloudABI ELF brand handler\n");
+ return (EINVAL);
+ }
+ return (0);
+ case MOD_UNLOAD:
+ if (elf64_brand_inuse(&cloudabi64_brand))
+ return (EBUSY);
+ if (elf64_remove_brand_entry(&cloudabi64_brand) < 0) {
+ printf("Failed to remove CloudABI ELF brand handler\n");
+ return (EINVAL);
+ }
+ return (0);
+ default:
+ return (EOPNOTSUPP);
+ }
+}
+
+static moduledata_t cloudabi64_module = {
+ "cloudabi64",
+ cloudabi64_modevent,
+ NULL
+};
+
+DECLARE_MODULE_TIED(cloudabi64, cloudabi64_module, SI_SUB_EXEC, SI_ORDER_ANY);
+MODULE_DEPEND(cloudabi64, cloudabi, 1, 1, 1);
Index: head/sys/compat/cloudabi/cloudabi_errno.c
===================================================================
--- head/sys/compat/cloudabi/cloudabi_errno.c
+++ head/sys/compat/cloudabi/cloudabi_errno.c
@@ -0,0 +1,121 @@
+/*-
+ * Copyright (c) 2015 Nuxi, https://nuxi.nl/
+ *
+ * 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.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+
+#include <compat/cloudabi/cloudabi_syscalldefs.h>
+#include <compat/cloudabi/cloudabi_util.h>
+
+/* Converts a FreeBSD errno to a CloudABI errno. */
+cloudabi_errno_t
+cloudabi_convert_errno(int error)
+{
+ static const int table[] = {
+ [E2BIG] = CLOUDABI_E2BIG,
+ [EACCES] = CLOUDABI_EACCES,
+ [EADDRINUSE] = CLOUDABI_EADDRINUSE,
+ [EADDRNOTAVAIL] = CLOUDABI_EADDRNOTAVAIL,
+ [EAFNOSUPPORT] = CLOUDABI_EAFNOSUPPORT,
+ [EAGAIN] = CLOUDABI_EAGAIN,
+ [EALREADY] = CLOUDABI_EALREADY,
+ [EBADF] = CLOUDABI_EBADF,
+ [EBADMSG] = CLOUDABI_EBADMSG,
+ [EBUSY] = CLOUDABI_EBUSY,
+ [ECANCELED] = CLOUDABI_ECANCELED,
+ [ECHILD] = CLOUDABI_ECHILD,
+ [ECONNABORTED] = CLOUDABI_ECONNABORTED,
+ [ECONNREFUSED] = CLOUDABI_ECONNREFUSED,
+ [ECONNRESET] = CLOUDABI_ECONNRESET,
+ [EDEADLK] = CLOUDABI_EDEADLK,
+ [EDESTADDRREQ] = CLOUDABI_EDESTADDRREQ,
+ [EDOM] = CLOUDABI_EDOM,
+ [EDQUOT] = CLOUDABI_EDQUOT,
+ [EEXIST] = CLOUDABI_EEXIST,
+ [EFAULT] = CLOUDABI_EFAULT,
+ [EFBIG] = CLOUDABI_EFBIG,
+ [EHOSTUNREACH] = CLOUDABI_EHOSTUNREACH,
+ [EIDRM] = CLOUDABI_EIDRM,
+ [EILSEQ] = CLOUDABI_EILSEQ,
+ [EINPROGRESS] = CLOUDABI_EINPROGRESS,
+ [EINTR] = CLOUDABI_EINTR,
+ [EINVAL] = CLOUDABI_EINVAL,
+ [EIO] = CLOUDABI_EIO,
+ [EISCONN] = CLOUDABI_EISCONN,
+ [EISDIR] = CLOUDABI_EISDIR,
+ [ELOOP] = CLOUDABI_ELOOP,
+ [EMFILE] = CLOUDABI_EMFILE,
+ [EMLINK] = CLOUDABI_EMLINK,
+ [EMSGSIZE] = CLOUDABI_EMSGSIZE,
+ [EMULTIHOP] = CLOUDABI_EMULTIHOP,
+ [ENAMETOOLONG] = CLOUDABI_ENAMETOOLONG,
+ [ENETDOWN] = CLOUDABI_ENETDOWN,
+ [ENETRESET] = CLOUDABI_ENETRESET,
+ [ENETUNREACH] = CLOUDABI_ENETUNREACH,
+ [ENFILE] = CLOUDABI_ENFILE,
+ [ENOBUFS] = CLOUDABI_ENOBUFS,
+ [ENODEV] = CLOUDABI_ENODEV,
+ [ENOENT] = CLOUDABI_ENOENT,
+ [ENOEXEC] = CLOUDABI_ENOEXEC,
+ [ENOLCK] = CLOUDABI_ENOLCK,
+ [ENOLINK] = CLOUDABI_ENOLINK,
+ [ENOMEM] = CLOUDABI_ENOMEM,
+ [ENOMSG] = CLOUDABI_ENOMSG,
+ [ENOPROTOOPT] = CLOUDABI_ENOPROTOOPT,
+ [ENOSPC] = CLOUDABI_ENOSPC,
+ [ENOSYS] = CLOUDABI_ENOSYS,
+ [ENOTCONN] = CLOUDABI_ENOTCONN,
+ [ENOTDIR] = CLOUDABI_ENOTDIR,
+ [ENOTEMPTY] = CLOUDABI_ENOTEMPTY,
+ [ENOTRECOVERABLE] = CLOUDABI_ENOTRECOVERABLE,
+ [ENOTSOCK] = CLOUDABI_ENOTSOCK,
+ [ENOTSUP] = CLOUDABI_ENOTSUP,
+ [ENOTTY] = CLOUDABI_ENOTTY,
+ [ENXIO] = CLOUDABI_ENXIO,
+ [EOVERFLOW] = CLOUDABI_EOVERFLOW,
+ [EOWNERDEAD] = CLOUDABI_EOWNERDEAD,
+ [EPERM] = CLOUDABI_EPERM,
+ [EPIPE] = CLOUDABI_EPIPE,
+ [EPROTO] = CLOUDABI_EPROTO,
+ [EPROTONOSUPPORT] = CLOUDABI_EPROTONOSUPPORT,
+ [EPROTOTYPE] = CLOUDABI_EPROTOTYPE,
+ [ERANGE] = CLOUDABI_ERANGE,
+ [EROFS] = CLOUDABI_EROFS,
+ [ESPIPE] = CLOUDABI_ESPIPE,
+ [ESRCH] = CLOUDABI_ESRCH,
+ [ESTALE] = CLOUDABI_ESTALE,
+ [ETIMEDOUT] = CLOUDABI_ETIMEDOUT,
+ [ETXTBSY] = CLOUDABI_ETXTBSY,
+ [EXDEV] = CLOUDABI_EXDEV,
+ [ENOTCAPABLE] = CLOUDABI_ENOTCAPABLE,
+ };
+
+ /* Unknown error: fall back to returning ENOSYS. */
+ if (error < 0 || error >= nitems(table) || table[error] == 0)
+ return (error == 0 ? 0 : CLOUDABI_ENOSYS);
+ return (table[error]);
+}
Index: head/sys/compat/cloudabi/cloudabi_util.h
===================================================================
--- head/sys/compat/cloudabi/cloudabi_util.h
+++ head/sys/compat/cloudabi/cloudabi_util.h
@@ -0,0 +1,36 @@
+/*-
+ * Copyright (c) 2015 Nuxi, https://nuxi.nl/
+ *
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _CLOUDABI_UTIL_H_
+#define _CLOUDABI_UTIL_H_
+
+#include <compat/cloudabi/cloudabi_syscalldefs.h>
+
+/* Converts a FreeBSD errno to a CloudABI errno. */
+cloudabi_errno_t cloudabi_convert_errno(int);
+
+#endif
Index: head/sys/conf/files
===================================================================
--- head/sys/conf/files
+++ head/sys/conf/files
@@ -254,6 +254,7 @@
cddl/dev/prototype.c optional dtrace_prototype | dtraceall compile-with "${CDDL_C}"
fs/nfsclient/nfs_clkdtrace.c optional dtnfscl nfscl | dtraceall nfscl compile-with "${CDDL_C}"
compat/cloudabi/cloudabi_clock.c optional compat_cloudabi64
+compat/cloudabi/cloudabi_errno.c optional compat_cloudabi64
compat/cloudabi/cloudabi_fd.c optional compat_cloudabi64
compat/cloudabi/cloudabi_file.c optional compat_cloudabi64
compat/cloudabi/cloudabi_futex.c optional compat_cloudabi64
Index: head/sys/conf/files.amd64
===================================================================
--- head/sys/conf/files.amd64
+++ head/sys/conf/files.amd64
@@ -137,6 +137,7 @@
amd64/amd64/uio_machdep.c standard
amd64/amd64/uma_machdep.c standard
amd64/amd64/vm_machdep.c standard
+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 "${ZFS_S}"
cddl/dev/dtrace/amd64/dtrace_asm.S optional dtrace compile-with "${DTRACE_S}"
Index: head/sys/contrib/cloudabi/syscalldefs_md.h
===================================================================
--- head/sys/contrib/cloudabi/syscalldefs_md.h
+++ head/sys/contrib/cloudabi/syscalldefs_md.h
@@ -43,6 +43,19 @@
typedef void IDENT(threadentry_t)(cloudabi_tid_t, PTR(void));
+// Auxiliary vector entry, used to provide paramters on startup.
+typedef struct {
+ uint32_t a_type;
+ union {
+ MEMBER(IDENT(size_t)) a_val;
+ MEMBER(PTR(void)) a_ptr;
+ };
+} IDENT(auxv_t);
+ASSERT_OFFSET(auxv_t, a_type, 0, 0);
+ASSERT_OFFSET(auxv_t, a_val, 4, 8);
+ASSERT_OFFSET(auxv_t, a_ptr, 4, 8);
+ASSERT_SIZE(auxv_t, 8, 16);
+
typedef struct {
MEMBER(PTR(const void)) iov_base;
MEMBER(IDENT(size_t)) iov_len;
@@ -162,29 +175,6 @@
ASSERT_SIZE(send_out_t, 4, 8);
typedef struct {
- MEMBER(PTR(const void)) sd_arg; // Program argument data.
- MEMBER(IDENT(size_t)) sd_arglen; // Program argument data size.
-
- MEMBER(PTR(void)) sd_elf_phdr; // ELF program header.
- MEMBER(IDENT(size_t)) sd_elf_phdrlen; // ELF program header length.
-
- MEMBER(cloudabi_tid_t) sd_thread_id; // Thread ID.
- MEMBER(uint64_t) sd_random_seed; // Random seed, used for SSP.
-
- MEMBER(uint32_t) sd_ncpus; // Number of CPUs.
- MEMBER(uint32_t) sd_pagesize; // Page size.
-} IDENT(startup_data_t);
-ASSERT_OFFSET(startup_data_t, sd_arg, 0, 0);
-ASSERT_OFFSET(startup_data_t, sd_arglen, 4, 8);
-ASSERT_OFFSET(startup_data_t, sd_elf_phdr, 8, 16);
-ASSERT_OFFSET(startup_data_t, sd_elf_phdrlen, 12, 24);
-ASSERT_OFFSET(startup_data_t, sd_thread_id, 16, 32);
-ASSERT_OFFSET(startup_data_t, sd_random_seed, 24, 40);
-ASSERT_OFFSET(startup_data_t, sd_ncpus, 32, 48);
-ASSERT_OFFSET(startup_data_t, sd_pagesize, 36, 52);
-ASSERT_SIZE(startup_data_t, 40, 56);
-
-typedef struct {
MEMBER(cloudabi_userdata_t) userdata;
MEMBER(uint16_t) flags;
MEMBER(cloudabi_eventtype_t) type;
Index: head/sys/contrib/cloudabi/syscalldefs_mi.h
===================================================================
--- head/sys/contrib/cloudabi/syscalldefs_mi.h
+++ head/sys/contrib/cloudabi/syscalldefs_mi.h
@@ -40,6 +40,19 @@
#define CLOUDABI_ADVICE_SEQUENTIAL 5
#define CLOUDABI_ADVICE_WILLNEED 6
+// Auxiliary vector entries. All entries that are also part of the
+// x86-64 ABI use the same number. All extensions start at 256.
+#define CLOUDABI_AT_ARGDATA 256
+#define CLOUDABI_AT_ARGDATALEN 257
+#define CLOUDABI_AT_CANARY 258
+#define CLOUDABI_AT_CANARYLEN 259
+#define CLOUDABI_AT_NCPUS 260
+#define CLOUDABI_AT_NULL 0
+#define CLOUDABI_AT_PAGESZ 6
+#define CLOUDABI_AT_PHDR 3
+#define CLOUDABI_AT_PHNUM 4
+#define CLOUDABI_AT_TID 261
+
// Clocks.
#define CLOUDABI_CLOCK_MONOTONIC 1
#define CLOUDABI_CLOCK_PROCESS_CPUTIME_ID 2
Index: head/sys/sys/sysent.h
===================================================================
--- head/sys/sys/sysent.h
+++ head/sys/sys/sysent.h
@@ -153,6 +153,7 @@
/* same as ELFOSABI_XXX, to prevent header pollution */
#define SV_ABI_LINUX 3
#define SV_ABI_FREEBSD 9
+#define SV_ABI_CLOUDABI 17
#define SV_ABI_UNDEF 255
#ifdef _KERNEL

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