commit 2315331d23d1cfe38f431ec5b81e52101e01dfd7 (tree)
parent ea9b38c93c38e402c807b20802eb003bcc4ddc5b
Author: Andrew Kelley <andrew@ziglang.org>
Date: Thu, 10 Sep 2020 15:56:27 -0400
Merge pull request #5527 from shawnanastasio/ppc64le
Implement support for powerpc64{,le}
Diffstat:
10 files changed, 822 insertions(+), 7 deletions(-)
diff --git a/lib/std/os/bits/linux.zig b/lib/std/os/bits/linux.zig
@@ -20,6 +20,7 @@ pub usingnamespace switch (builtin.arch) {
.arm => @import("linux/arm-eabi.zig"),
.riscv64 => @import("linux/riscv64.zig"),
.mips, .mipsel => @import("linux/mips.zig"),
+ .powerpc64, .powerpc64le => @import("linux/powerpc64.zig"),
else => struct {},
};
diff --git a/lib/std/os/bits/linux/powerpc64.zig b/lib/std/os/bits/linux/powerpc64.zig
@@ -0,0 +1,602 @@
+const std = @import("../../../std.zig");
+const linux = std.os.linux;
+const socklen_t = linux.socklen_t;
+const iovec = linux.iovec;
+const iovec_const = linux.iovec_const;
+const uid_t = linux.uid_t;
+const gid_t = linux.gid_t;
+const pid_t = linux.pid_t;
+const stack_t = linux.stack_t;
+const sigset_t = linux.sigset_t;
+pub const SYS = extern enum(usize) {
+ restart_syscall = 0,
+ exit = 1,
+ fork = 2,
+ read = 3,
+ write = 4,
+ open = 5,
+ close = 6,
+ waitpid = 7,
+ creat = 8,
+ link = 9,
+ unlink = 10,
+ execve = 11,
+ chdir = 12,
+ time = 13,
+ mknod = 14,
+ chmod = 15,
+ lchown = 16,
+ sys_break = 17, // sys_ prepended to avoid clashing with keyword
+ oldstat = 18,
+ lseek = 19,
+ getpid = 20,
+ mount = 21,
+ umount = 22,
+ setuid = 23,
+ getuid = 24,
+ stime = 25,
+ ptrace = 26,
+ alarm = 27,
+ oldfstat = 28,
+ pause = 29,
+ utime = 30,
+ stty = 31,
+ gtty = 32,
+ access = 33,
+ nice = 34,
+ ftime = 35,
+ sync = 36,
+ kill = 37,
+ rename = 38,
+ mkdir = 39,
+ rmdir = 40,
+ dup = 41,
+ pipe = 42,
+ times = 43,
+ prof = 44,
+ brk = 45,
+ setgid = 46,
+ getgid = 47,
+ signal = 48,
+ geteuid = 49,
+ getegid = 50,
+ acct = 51,
+ umount2 = 52,
+ lock = 53,
+ ioctl = 54,
+ fcntl = 55,
+ mpx = 56,
+ setpgid = 57,
+ ulimit = 58,
+ oldolduname = 59,
+ umask = 60,
+ chroot = 61,
+ ustat = 62,
+ dup2 = 63,
+ getppid = 64,
+ getpgrp = 65,
+ setsid = 66,
+ sigaction = 67,
+ sgetmask = 68,
+ ssetmask = 69,
+ setreuid = 70,
+ setregid = 71,
+ sigsuspend = 72,
+ sigpending = 73,
+ sethostname = 74,
+ setrlimit = 75,
+ getrlimit = 76,
+ getrusage = 77,
+ gettimeofday = 78,
+ settimeofday = 79,
+ getgroups = 80,
+ setgroups = 81,
+ select = 82,
+ symlink = 83,
+ oldlstat = 84,
+ readlink = 85,
+ uselib = 86,
+ swapon = 87,
+ reboot = 88,
+ readdir = 89,
+ mmap = 90,
+ munmap = 91,
+ truncate = 92,
+ ftruncate = 93,
+ fchmod = 94,
+ fchown = 95,
+ getpriority = 96,
+ setpriority = 97,
+ profil = 98,
+ statfs = 99,
+ fstatfs = 100,
+ ioperm = 101,
+ socketcall = 102,
+ syslog = 103,
+ setitimer = 104,
+ getitimer = 105,
+ stat = 106,
+ lstat = 107,
+ fstat = 108,
+ olduname = 109,
+ iopl = 110,
+ vhangup = 111,
+ idle = 112,
+ vm86 = 113,
+ wait4 = 114,
+ swapoff = 115,
+ sysinfo = 116,
+ ipc = 117,
+ fsync = 118,
+ sigreturn = 119,
+ clone = 120,
+ setdomainname = 121,
+ uname = 122,
+ modify_ldt = 123,
+ adjtimex = 124,
+ mprotect = 125,
+ sigprocmask = 126,
+ create_module = 127,
+ init_module = 128,
+ delete_module = 129,
+ get_kernel_syms = 130,
+ quotactl = 131,
+ getpgid = 132,
+ fchdir = 133,
+ bdflush = 134,
+ sysfs = 135,
+ personality = 136,
+ afs_syscall = 137,
+ setfsuid = 138,
+ setfsgid = 139,
+ _llseek = 140,
+ getdents = 141,
+ _newselect = 142,
+ flock = 143,
+ msync = 144,
+ readv = 145,
+ writev = 146,
+ getsid = 147,
+ fdatasync = 148,
+ _sysctl = 149,
+ mlock = 150,
+ munlock = 151,
+ mlockall = 152,
+ munlockall = 153,
+ sched_setparam = 154,
+ sched_getparam = 155,
+ sched_setscheduler = 156,
+ sched_getscheduler = 157,
+ sched_yield = 158,
+ sched_get_priority_max = 159,
+ sched_get_priority_min = 160,
+ sched_rr_get_interval = 161,
+ nanosleep = 162,
+ mremap = 163,
+ setresuid = 164,
+ getresuid = 165,
+ query_module = 166,
+ poll = 167,
+ nfsservctl = 168,
+ setresgid = 169,
+ getresgid = 170,
+ prctl = 171,
+ rt_sigreturn = 172,
+ rt_sigaction = 173,
+ rt_sigprocmask = 174,
+ rt_sigpending = 175,
+ rt_sigtimedwait = 176,
+ rt_sigqueueinfo = 177,
+ rt_sigsuspend = 178,
+ pread64 = 179,
+ pwrite64 = 180,
+ chown = 181,
+ getcwd = 182,
+ capget = 183,
+ capset = 184,
+ sigaltstack = 185,
+ sendfile = 186,
+ getpmsg = 187,
+ putpmsg = 188,
+ vfork = 189,
+ ugetrlimit = 190,
+ readahead = 191,
+ pciconfig_read = 198,
+ pciconfig_write = 199,
+ pciconfig_iobase = 200,
+ multiplexer = 201,
+ getdents64 = 202,
+ pivot_root = 203,
+ madvise = 205,
+ mincore = 206,
+ gettid = 207,
+ tkill = 208,
+ setxattr = 209,
+ lsetxattr = 210,
+ fsetxattr = 211,
+ getxattr = 212,
+ lgetxattr = 213,
+ fgetxattr = 214,
+ listxattr = 215,
+ llistxattr = 216,
+ flistxattr = 217,
+ removexattr = 218,
+ lremovexattr = 219,
+ fremovexattr = 220,
+ futex = 221,
+ sched_setaffinity = 222,
+ sched_getaffinity = 223,
+ tuxcall = 225,
+ io_setup = 227,
+ io_destroy = 228,
+ io_getevents = 229,
+ io_submit = 230,
+ io_cancel = 231,
+ set_tid_address = 232,
+ fadvise64 = 233,
+ exit_group = 234,
+ lookup_dcookie = 235,
+ epoll_create = 236,
+ epoll_ctl = 237,
+ epoll_wait = 238,
+ remap_file_pages = 239,
+ timer_create = 240,
+ timer_settime = 241,
+ timer_gettime = 242,
+ timer_getoverrun = 243,
+ timer_delete = 244,
+ clock_settime = 245,
+ clock_gettime = 246,
+ clock_getres = 247,
+ clock_nanosleep = 248,
+ swapcontext = 249,
+ tgkill = 250,
+ utimes = 251,
+ statfs64 = 252,
+ fstatfs64 = 253,
+ rtas = 255,
+ sys_debug_setcontext = 256,
+ migrate_pages = 258,
+ mbind = 259,
+ get_mempolicy = 260,
+ set_mempolicy = 261,
+ mq_open = 262,
+ mq_unlink = 263,
+ mq_timedsend = 264,
+ mq_timedreceive = 265,
+ mq_notify = 266,
+ mq_getsetattr = 267,
+ kexec_load = 268,
+ add_key = 269,
+ request_key = 270,
+ keyctl = 271,
+ waitid = 272,
+ ioprio_set = 273,
+ ioprio_get = 274,
+ inotify_init = 275,
+ inotify_add_watch = 276,
+ inotify_rm_watch = 277,
+ spu_run = 278,
+ spu_create = 279,
+ pselect6 = 280,
+ ppoll = 281,
+ unshare = 282,
+ splice = 283,
+ tee = 284,
+ vmsplice = 285,
+ openat = 286,
+ mkdirat = 287,
+ mknodat = 288,
+ fchownat = 289,
+ futimesat = 290,
+ newfstatat = 291,
+ unlinkat = 292,
+ renameat = 293,
+ linkat = 294,
+ symlinkat = 295,
+ readlinkat = 296,
+ fchmodat = 297,
+ faccessat = 298,
+ get_robust_list = 299,
+ set_robust_list = 300,
+ move_pages = 301,
+ getcpu = 302,
+ epoll_pwait = 303,
+ utimensat = 304,
+ signalfd = 305,
+ timerfd_create = 306,
+ eventfd = 307,
+ sync_file_range2 = 308,
+ fallocate = 309,
+ subpage_prot = 310,
+ timerfd_settime = 311,
+ timerfd_gettime = 312,
+ signalfd4 = 313,
+ eventfd2 = 314,
+ epoll_create1 = 315,
+ dup3 = 316,
+ pipe2 = 317,
+ inotify_init1 = 318,
+ perf_event_open = 319,
+ preadv = 320,
+ pwritev = 321,
+ rt_tgsigqueueinfo = 322,
+ fanotify_init = 323,
+ fanotify_mark = 324,
+ prlimit64 = 325,
+ socket = 326,
+ bind = 327,
+ connect = 328,
+ listen = 329,
+ accept = 330,
+ getsockname = 331,
+ getpeername = 332,
+ socketpair = 333,
+ send = 334,
+ sendto = 335,
+ recv = 336,
+ recvfrom = 337,
+ shutdown = 338,
+ setsockopt = 339,
+ getsockopt = 340,
+ sendmsg = 341,
+ recvmsg = 342,
+ recvmmsg = 343,
+ accept4 = 344,
+ name_to_handle_at = 345,
+ open_by_handle_at = 346,
+ clock_adjtime = 347,
+ syncfs = 348,
+ sendmmsg = 349,
+ setns = 350,
+ process_vm_readv = 351,
+ process_vm_writev = 352,
+ finit_module = 353,
+ kcmp = 354,
+ sched_setattr = 355,
+ sched_getattr = 356,
+ renameat2 = 357,
+ seccomp = 358,
+ getrandom = 359,
+ memfd_create = 360,
+ bpf = 361,
+ execveat = 362,
+ switch_endian = 363,
+ userfaultfd = 364,
+ membarrier = 365,
+ mlock2 = 378,
+ copy_file_range = 379,
+ preadv2 = 380,
+ pwritev2 = 381,
+ kexec_file_load = 382,
+ statx = 383,
+ pkey_alloc = 384,
+ pkey_free = 385,
+ pkey_mprotect = 386,
+ rseq = 387,
+ io_pgetevents = 388,
+ semtimedop = 392,
+ semget = 393,
+ semctl = 394,
+ shmget = 395,
+ shmctl = 396,
+ shmat = 397,
+ shmdt = 398,
+ msgget = 399,
+ msgsnd = 400,
+ msgrcv = 401,
+ msgctl = 402,
+ pidfd_send_signal = 424,
+ io_uring_setup = 425,
+ io_uring_enter = 426,
+ io_uring_register = 427,
+ open_tree = 428,
+ move_mount = 429,
+ fsopen = 430,
+ fsconfig = 431,
+ fsmount = 432,
+ fspick = 433,
+ pidfd_open = 434,
+ clone3 = 435,
+ openat2 = 437,
+ pidfd_getfd = 438,
+
+ _,
+};
+
+pub const O_CREAT = 0o100;
+pub const O_EXCL = 0o200;
+pub const O_NOCTTY = 0o400;
+pub const O_TRUNC = 0o1000;
+pub const O_APPEND = 0o2000;
+pub const O_NONBLOCK = 0o4000;
+pub const O_DSYNC = 0o10000;
+pub const O_SYNC = 0o4010000;
+pub const O_RSYNC = 0o4010000;
+pub const O_DIRECTORY = 0o40000;
+pub const O_NOFOLLOW = 0o100000;
+pub const O_CLOEXEC = 0o2000000;
+
+pub const O_ASYNC = 0o20000;
+pub const O_DIRECT = 0o400000;
+pub const O_LARGEFILE = 0o200000;
+pub const O_NOATIME = 0o1000000;
+pub const O_PATH = 0o10000000;
+pub const O_TMPFILE = 0o20200000;
+pub const O_NDELAY = O_NONBLOCK;
+
+pub const F_DUPFD = 0;
+pub const F_GETFD = 1;
+pub const F_SETFD = 2;
+pub const F_GETFL = 3;
+pub const F_SETFL = 4;
+
+pub const F_SETOWN = 8;
+pub const F_GETOWN = 9;
+pub const F_SETSIG = 10;
+pub const F_GETSIG = 11;
+
+pub const F_GETLK = 5;
+pub const F_SETLK = 6;
+pub const F_SETLKW = 7;
+
+pub const F_RDLCK = 0;
+pub const F_WRLCK = 1;
+pub const F_UNLCK = 2;
+
+pub const LOCK_SH = 1;
+pub const LOCK_EX = 2;
+pub const LOCK_UN = 8;
+pub const LOCK_NB = 4;
+
+pub const F_SETOWN_EX = 15;
+pub const F_GETOWN_EX = 16;
+
+pub const F_GETOWNER_UIDS = 17;
+
+/// stack-like segment
+pub const MAP_GROWSDOWN = 0x0100;
+
+/// ETXTBSY
+pub const MAP_DENYWRITE = 0x0800;
+
+/// mark it as an executable
+pub const MAP_EXECUTABLE = 0x1000;
+
+/// pages are locked
+pub const MAP_LOCKED = 0x0080;
+
+/// don't check for reservations
+pub const MAP_NORESERVE = 0x0040;
+
+pub const VDSO_CGT_SYM = "__kernel_clock_gettime";
+pub const VDSO_CGT_VER = "LINUX_2.6.15";
+
+pub const Flock = extern struct {
+ l_type: i16,
+ l_whence: i16,
+ l_start: off_t,
+ l_len: off_t,
+ l_pid: pid_t,
+ __unused: [4]u8,
+};
+
+pub const msghdr = extern struct {
+ msg_name: ?*sockaddr,
+ msg_namelen: socklen_t,
+ msg_iov: [*]iovec,
+ msg_iovlen: usize,
+ msg_control: ?*c_void,
+ msg_controllen: usize,
+ msg_flags: i32,
+};
+
+pub const msghdr_const = extern struct {
+ msg_name: ?*const sockaddr,
+ msg_namelen: socklen_t,
+ msg_iov: [*]iovec_const,
+ msg_iovlen: usize,
+ msg_control: ?*c_void,
+ msg_controllen: usize,
+ msg_flags: i32,
+};
+
+pub const blksize_t = i64;
+pub const nlink_t = u64;
+pub const time_t = i64;
+pub const mode_t = u32;
+pub const off_t = i64;
+pub const ino_t = u64;
+pub const dev_t = u64;
+pub const blkcnt_t = i64;
+
+/// Renamed to Stat to not conflict with the stat function.
+/// atime, mtime, and ctime have functions to return `timespec`,
+/// because although this is a POSIX API, the layout and names of
+/// the structs are inconsistent across operating systems, and
+/// in C, macros are used to hide the differences. Here we use
+/// methods to accomplish this.
+pub const Stat = extern struct {
+ dev: dev_t,
+ ino: ino_t,
+ nlink: nlink_t,
+ mode: mode_t,
+ uid: uid_t,
+ gid: gid_t,
+ rdev: dev_t,
+ size: off_t,
+ blksize: blksize_t,
+ blocks: blkcnt_t,
+ atim: timespec,
+ mtim: timespec,
+ ctim: timespec,
+ __unused: [3]u64,
+
+ pub fn atime(self: Stat) timespec {
+ return self.atim;
+ }
+
+ pub fn mtime(self: Stat) timespec {
+ return self.mtim;
+ }
+
+ pub fn ctime(self: Stat) timespec {
+ return self.ctim;
+ }
+};
+
+pub const timespec = extern struct {
+ tv_sec: time_t,
+ tv_nsec: isize,
+};
+
+pub const timeval = extern struct {
+ tv_sec: isize,
+ tv_usec: isize,
+};
+
+pub const timezone = extern struct {
+ tz_minuteswest: i32,
+ tz_dsttime: i32,
+};
+
+pub const greg_t = u64;
+pub const gregset_t = [48]greg_t;
+pub const fpregset_t = [33]f64;
+
+/// The position of the vscr register depends on endianness.
+/// On C, macros are used to change vscr_word's offset to
+/// account for this. Here we'll just define vscr_word_le
+/// and vscr_word_be. Code must take care to use the correct one.
+pub const vrregset = extern struct {
+ vrregs: [32][4]u32 align(16),
+ vscr_word_le: u32,
+ _pad1: [2]u32,
+ vscr_word_be: u32,
+ vrsave: u32,
+ _pad2: [3]u32
+};
+pub const vrregset_t = vrregset;
+
+pub const mcontext_t = extern struct {
+ __unused: [4]u64,
+ signal: i32,
+ _pad0: i32,
+ handler: u64,
+ oldmask: u64,
+ regs: ?*c_void,
+ gp_regs: gregset_t,
+ fp_regs: fpregset_t,
+ v_regs: *vrregset_t,
+ vmx_reserve: [34+34+32+1]i64,
+};
+
+pub const ucontext_t = extern struct {
+ flags: u32,
+ link: *ucontext_t,
+ stack: stack_t,
+ sigmask: sigset_t,
+ mcontext: mcontext_t,
+};
+
+pub const Elf_Symndx = u32;
diff --git a/lib/std/os/linux.zig b/lib/std/os/linux.zig
@@ -25,6 +25,7 @@ pub usingnamespace switch (builtin.arch) {
.arm => @import("linux/arm-eabi.zig"),
.riscv64 => @import("linux/riscv64.zig"),
.mips, .mipsel => @import("linux/mips.zig"),
+ .powerpc64, .powerpc64le => @import("linux/powerpc64.zig"),
else => struct {},
};
pub usingnamespace @import("bits.zig");
diff --git a/lib/std/os/linux/powerpc64.zig b/lib/std/os/linux/powerpc64.zig
@@ -0,0 +1,127 @@
+usingnamespace @import("../bits.zig");
+
+pub fn syscall0(number: SYS) usize {
+ return asm volatile (
+ \\ sc
+ \\ bns+ 1f
+ \\ neg 3, 3
+ \\ 1:
+ : [ret] "={r3}" (-> usize)
+ : [number] "{r0}" (@enumToInt(number))
+ : "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
+ );
+}
+
+pub fn syscall1(number: SYS, arg1: usize) usize {
+ return asm volatile (
+ \\ sc
+ \\ bns+ 1f
+ \\ neg 3, 3
+ \\ 1:
+ : [ret] "={r3}" (-> usize)
+ : [number] "{r0}" (@enumToInt(number)),
+ [arg1] "{r3}" (arg1)
+ : "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
+ );
+}
+
+pub fn syscall2(number: SYS, arg1: usize, arg2: usize) usize {
+ return asm volatile (
+ \\ sc
+ \\ bns+ 1f
+ \\ neg 3, 3
+ \\ 1:
+ : [ret] "={r3}" (-> usize)
+ : [number] "{r0}" (@enumToInt(number)),
+ [arg1] "{r3}" (arg1),
+ [arg2] "{r4}" (arg2)
+ : "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
+ );
+}
+
+pub fn syscall3(number: SYS, arg1: usize, arg2: usize, arg3: usize) usize {
+ return asm volatile (
+ \\ sc
+ \\ bns+ 1f
+ \\ neg 3, 3
+ \\ 1:
+ : [ret] "={r3}" (-> usize)
+ : [number] "{r0}" (@enumToInt(number)),
+ [arg1] "{r3}" (arg1),
+ [arg2] "{r4}" (arg2),
+ [arg3] "{r5}" (arg3)
+ : "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
+ );
+}
+
+pub fn syscall4(number: SYS, arg1: usize, arg2: usize, arg3: usize, arg4: usize) usize {
+ return asm volatile (
+ \\ sc
+ \\ bns+ 1f
+ \\ neg 3, 3
+ \\ 1:
+ : [ret] "={r3}" (-> usize)
+ : [number] "{r0}" (@enumToInt(number)),
+ [arg1] "{r3}" (arg1),
+ [arg2] "{r4}" (arg2),
+ [arg3] "{r5}" (arg3),
+ [arg4] "{r6}" (arg4)
+ : "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
+ );
+}
+
+pub fn syscall5(number: SYS, arg1: usize, arg2: usize, arg3: usize, arg4: usize, arg5: usize) usize {
+ return asm volatile (
+ \\ sc
+ \\ bns+ 1f
+ \\ neg 3, 3
+ \\ 1:
+ : [ret] "={r3}" (-> usize)
+ : [number] "{r0}" (@enumToInt(number)),
+ [arg1] "{r3}" (arg1),
+ [arg2] "{r4}" (arg2),
+ [arg3] "{r5}" (arg3),
+ [arg4] "{r6}" (arg4),
+ [arg5] "{r7}" (arg5)
+ : "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
+ );
+}
+
+pub fn syscall6(
+ number: SYS,
+ arg1: usize,
+ arg2: usize,
+ arg3: usize,
+ arg4: usize,
+ arg5: usize,
+ arg6: usize,
+) usize {
+ return asm volatile (
+ \\ sc
+ \\ bns+ 1f
+ \\ neg 3, 3
+ \\ 1:
+ : [ret] "={r3}" (-> usize)
+ : [number] "{r0}" (@enumToInt(number)),
+ [arg1] "{r3}" (arg1),
+ [arg2] "{r4}" (arg2),
+ [arg3] "{r5}" (arg3),
+ [arg4] "{r6}" (arg4),
+ [arg5] "{r7}" (arg5),
+ [arg6] "{r8}" (arg6)
+ : "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
+ );
+}
+
+/// This matches the libc clone function.
+pub extern fn clone(func: fn (arg: usize) callconv(.C) u8, stack: usize, flags: usize, arg: usize, ptid: *i32, tls: usize, ctid: *i32) usize;
+
+pub const restore = restore_rt;
+
+pub fn restore_rt() callconv(.Naked) void {
+ return asm volatile ("sc"
+ :
+ : [number] "{r0}" (@enumToInt(SYS.rt_sigreturn))
+ : "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
+ );
+}
diff --git a/lib/std/os/linux/tls.zig b/lib/std/os/linux/tls.zig
@@ -53,7 +53,7 @@ const TLSVariant = enum {
};
const tls_variant = switch (builtin.arch) {
- .arm, .armeb, .aarch64, .aarch64_be, .riscv32, .riscv64, .mips, .mipsel => TLSVariant.VariantI,
+ .arm, .armeb, .aarch64, .aarch64_be, .riscv32, .riscv64, .mips, .mipsel, .powerpc, .powerpc64, .powerpc64le => TLSVariant.VariantI,
.x86_64, .i386 => TLSVariant.VariantII,
else => @compileError("undefined tls_variant for this architecture"),
};
@@ -77,12 +77,12 @@ const tls_tp_points_past_tcb = switch (builtin.arch) {
// make the generated code more efficient
const tls_tp_offset = switch (builtin.arch) {
- .mips, .mipsel => 0x7000,
+ .mips, .mipsel, .powerpc, .powerpc64, .powerpc64le => 0x7000,
else => 0,
};
const tls_dtv_offset = switch (builtin.arch) {
- .mips, .mipsel => 0x8000,
+ .mips, .mipsel, .powerpc, .powerpc64, .powerpc64le => 0x8000,
.riscv32, .riscv64 => 0x800,
else => 0,
};
@@ -165,6 +165,13 @@ pub fn setThreadPointer(addr: usize) void {
const rc = std.os.linux.syscall1(.set_thread_area, addr);
assert(rc == 0);
},
+ .powerpc, .powerpc64, .powerpc64le => {
+ asm volatile (
+ \\ mr 13, %[addr]
+ :
+ : [addr] "r" (addr)
+ );
+ },
else => @compileError("Unsupported architecture"),
}
}
diff --git a/lib/std/special/c.zig b/lib/std/special/c.zig
@@ -394,6 +394,61 @@ fn clone() callconv(.Naked) void {
\\ syscall
);
},
+
+ .powerpc64, .powerpc64le => {
+ asm volatile (
+ \\ # store non-volatile regs r30, r31 on stack in order to put our
+ \\ # start func and its arg there
+ \\ stwu 30, -16(1)
+ \\ stw 31, 4(1)
+ \\ # save r3 (func) into r30, and r6(arg) into r31
+ \\ mr 30, 3
+ \\ mr 31, 6
+ \\ # create initial stack frame for new thread
+ \\ clrrwi 4, 4, 4
+ \\ li 0, 0
+ \\ stwu 0, -16(4)
+ \\ #move c into first arg
+ \\ mr 3, 5
+ \\ mr 5, 7
+ \\ mr 6, 8
+ \\ mr 7, 9
+ \\ # move syscall number into r0
+ \\ li 0, 120
+ \\ sc
+
+ \\ # check for syscall error
+ \\ bns+ 1f # jump to label 1 if no summary overflow.
+ \\ #else
+ \\ neg 3, 3 #negate the result (errno)
+ \\1:
+ \\ # compare sc result with 0
+ \\ cmpwi cr7, 3, 0
+
+ \\ # if not 0, jump to end
+ \\ bne cr7, 2f
+
+ \\ #else: we're the child
+ \\ #call funcptr: move arg (d) into r3
+ \\ mr 3, 31
+ \\ #move r30 (funcptr) into CTR reg
+ \\ mtctr 30
+ \\ # call CTR reg
+ \\ bctrl
+ \\ # mov SYS_exit into r0 (the exit param is already in r3)
+ \\ li 0, 1
+ \\ sc
+
+ \\2:
+ \\ # restore stack
+ \\ lwz 30, 0(1)
+ \\ lwz 31, 4(1)
+ \\ addi 1, 1, 16
+
+ \\ blr
+ );
+ },
+
else => @compileError("Implement clone() for this arch."),
}
}
diff --git a/lib/std/start.zig b/lib/std/start.zig
@@ -121,6 +121,21 @@ fn _start() callconv(.Naked) noreturn {
: [argc] "=r" (-> [*]usize)
);
},
+ .powerpc64le => {
+ // Before returning the stack pointer, we have to set up a backchain
+ // and a few other registers required by the ELFv2 ABI.
+ // TODO: Support powerpc64 (big endian) on ELFv2.
+ starting_stack_ptr = asm (
+ \\ mr 4, 1
+ \\ subi 1, 1, 32
+ \\ li 5, 0
+ \\ std 5, 0(1)
+ \\ mr %[argc], 4
+ : [argc] "=r" (-> [*]usize)
+ :
+ : "r4", "r5"
+ );
+ },
else => @compileError("unsupported arch"),
}
// If LLVM inlines stack variables into _start, they will overwrite
diff --git a/src/analyze.cpp b/src/analyze.cpp
@@ -1003,7 +1003,8 @@ bool want_first_arg_sret(CodeGen *g, FnTypeId *fn_type_id) {
g->zig_target->arch == ZigLLVM_x86_64 ||
target_is_arm(g->zig_target) ||
target_is_riscv(g->zig_target) ||
- target_is_wasm(g->zig_target))
+ target_is_wasm(g->zig_target) ||
+ target_is_ppc(g->zig_target))
{
X64CABIClass abi_class = type_c_abi_x86_64_class(g, fn_type_id->return_type);
return abi_class == X64CABIClass_MEMORY || abi_class == X64CABIClass_MEMORY_nobyval;
diff --git a/src/target.cpp b/src/target.cpp
@@ -853,6 +853,9 @@ const char *arch_stack_pointer_register_name(ZigLLVM_ArchType arch) {
case ZigLLVM_riscv32:
case ZigLLVM_riscv64:
case ZigLLVM_mipsel:
+ case ZigLLVM_ppc:
+ case ZigLLVM_ppc64:
+ case ZigLLVM_ppc64le:
return "sp";
case ZigLLVM_wasm32:
@@ -879,7 +882,6 @@ const char *arch_stack_pointer_register_name(ZigLLVM_ArchType arch) {
case ZigLLVM_msp430:
case ZigLLVM_nvptx:
case ZigLLVM_nvptx64:
- case ZigLLVM_ppc64le:
case ZigLLVM_r600:
case ZigLLVM_renderscript32:
case ZigLLVM_renderscript64:
@@ -893,8 +895,6 @@ const char *arch_stack_pointer_register_name(ZigLLVM_ArchType arch) {
case ZigLLVM_tce:
case ZigLLVM_tcele:
case ZigLLVM_xcore:
- case ZigLLVM_ppc:
- case ZigLLVM_ppc64:
case ZigLLVM_ve:
zig_panic("TODO populate this table with stack pointer register name for this CPU architecture");
}
@@ -1325,6 +1325,11 @@ bool target_is_mips(const ZigTarget *target) {
target->arch == ZigLLVM_mips64 || target->arch == ZigLLVM_mips64el;
}
+bool target_is_ppc(const ZigTarget *target) {
+ return target->arch == ZigLLVM_ppc || target->arch == ZigLLVM_ppc64 ||
+ target->arch == ZigLLVM_ppc64le;
+}
+
unsigned target_fn_align(const ZigTarget *target) {
return 16;
}
diff --git a/src/target.hpp b/src/target.hpp
@@ -95,6 +95,7 @@ ZigLLVM_OSType get_llvm_os_type(Os os_type);
bool target_is_arm(const ZigTarget *target);
bool target_is_mips(const ZigTarget *target);
+bool target_is_ppc(const ZigTarget *target);
bool target_allows_addr_zero(const ZigTarget *target);
bool target_has_valgrind_support(const ZigTarget *target);
bool target_os_is_darwin(Os os);
