Version 0.4.00.4.0

17 files changed, 708 insertions, 0 deletions

diff --git a/sysroot/Makefile.am b/sysroot/Makefile.am
new file mode 100644
index 0000000..6285067
--- /dev/null
+++ b/sysroot/Makefile.am
@@ -0,0 +1,41 @@
+
+mcpuconfdir = @MCPU_ETCDIR@
+
+dist_mcpuconf_DATA = etc/mcpu-ld.conf
+
+crt_srcdir = $(srcdir)/usr/src/mcpu/crt
+crt_builddir = $(builddir)/lib/mcpu
+
+crt_objects = $(crt_builddir)/crt0.o \
+              $(crt_builddir)/crt1.o \
+              $(crt_builddir)/crti.o \
+              $(crt_builddir)/crtn.o
+
+mcpucrtobjectsdir = @MCPU_ROOT@/lib/mcpu
+nodist_mcpucrtobjects_DATA = $(crt_objects)
+
+all-local: $(crt_objects)
+
+$(crt_builddir)/crt0.o: $(crt_srcdir)/crt0.S $(top_builddir)/utils/mcpu-as
+	$(MKDIR_P) $(crt_builddir)
+	$(top_builddir)/utils/mcpu-as -o $@ $(crt_srcdir)/crt0.S
+
+$(crt_builddir)/crt1.o: $(crt_srcdir)/crt1.S $(top_builddir)/utils/mcpu-as
+	$(MKDIR_P) $(crt_builddir)
+	$(top_builddir)/utils/mcpu-as -o $@ $(crt_srcdir)/crt1.S
+
+$(crt_builddir)/crti.o: $(crt_srcdir)/crti.S $(top_builddir)/utils/mcpu-as
+	$(MKDIR_P) $(crt_builddir)
+	$(top_builddir)/utils/mcpu-as -o $@ $(crt_srcdir)/crti.S
+
+$(crt_builddir)/crtn.o: $(crt_srcdir)/crtn.S $(top_builddir)/utils/mcpu-as
+	$(MKDIR_P) $(crt_builddir)
+	$(top_builddir)/utils/mcpu-as -o $@ $(crt_srcdir)/crtn.S
+
+EXTRA_DIST = README \
+             usr/src/mcpu/crt/crt0.S \
+             usr/src/mcpu/crt/crt1.S \
+             usr/src/mcpu/crt/crti.S \
+             usr/src/mcpu/crt/crtn.S
+
+CLEANFILES = $(crt_objects)
diff --git a/sysroot/README b/sysroot/README
new file mode 100644
index 0000000..93401f8
--- /dev/null
+++ b/sysroot/README
@@ -0,0 +1,52 @@
+
+MCPU sysroot source tree
+========================
+
+This directory is the canonical build-time source image of the target MCPU
+system root.  It contains target-facing ABI/configuration material and CRT
+sources; it does not contain manual examples or regression-only emulators.
+
+Runtime-root configuration
+--------------------------
+
+The canonical LibMCPU runtime-root configuration source is:
+
+  sysroot/etc/mcpu-ld.conf
+
+`make install` installs it as:
+
+  <MCPU-root>/etc/mcpu-ld.conf
+
+where `<MCPU-root>` is the configured target MCPU root (normally
+`$(libdir)/mcpu`).  The installed runtime path is unchanged; only source-tree
+ownership now follows the sysroot layout.
+
+Assembler ABI headers
+---------------------
+
+The canonical public assembler ABI headers are:
+
+  sysroot/include/sys/asm/
+
+They are the only source used by the LibMCPU build to install
+`<MCPU-root>/include/sys/asm/` and by regression tests that validate the public
+assembler ABI.
+
+HLL CRT
+-------
+
+The canonical LibMCPU CRT assembler sources are:
+
+  sysroot/usr/src/mcpu/crt/
+
+They are assembled out-of-tree into:
+
+  $builddir/sysroot/lib/mcpu/
+
+and `make install` installs `crt0.o`, `crt1.o`, `crti.o`, and `crtn.o` under:
+
+  <MCPU-root>/lib/mcpu/
+
+The target sysroot intentionally contains no `libc-stub` or `hll-emul`
+development trees.  HLL/CRT regression fixtures belong to `tests/fixtures/`;
+real MCPU Libc and compiler-output examples are separate projects/packages.
diff --git a/sysroot/etc/mcpu-ld.conf b/sysroot/etc/mcpu-ld.conf
new file mode 100644
index 0000000..cd3ecbe
--- /dev/null
+++ b/sysroot/etc/mcpu-ld.conf
@@ -0,0 +1,18 @@
+/*
+ * LibMCPU linker/runtime configuration.
+ *
+ * Effective root of the MCPU system library tree.
+ *
+ * The default is not stored as an absolute installation path in this file.
+ * At run time mcpu-ld and mcpu-run locate their real executable, take the
+ * parent of its executable directory as the MCPU installation root, and use
+ * <runtime-root>/lib.  A higher-priority system or per-user configuration may
+ * replace that path completely by defining MCPU_LD_SYSTEM_LIBRARY_PATH.
+ * Set an empty value in an override configuration to disable the configured
+ * system library tree.
+ *
+ * Example override:
+ *   MCPU_LD_SYSTEM_LIBRARY_PATH = $HOME/mcpu-next/lib;
+ */
+
+/* MCPU_LD_SYSTEM_LIBRARY_PATH = $HOME/mcpu-next/lib; */
diff --git a/sysroot/include/sys/asm/dirent.h b/sysroot/include/sys/asm/dirent.h
new file mode 100644
index 0000000..d761bf6
--- /dev/null
+++ b/sysroot/include/sys/asm/dirent.h
@@ -0,0 +1,23 @@
+
+#ifndef __MCPU_SYS_ASM_DIRENT_H
+#define __MCPU_SYS_ASM_DIRENT_H
+
+/* Fixed external MCPU assembler ABI corresponding to struct __cpu_dirent. */
+#define __MCPU_DIRENT_SIZE        288
+#define __MCPU_DIRENT_D_INO         0
+#define __MCPU_DIRENT_D_OFF         8
+#define __MCPU_DIRENT_D_RECLEN     16
+#define __MCPU_DIRENT_D_TYPE       24
+#define __MCPU_DIRENT_D_NAME       32
+#define __MCPU_DIRENT_NAME_SIZE   256
+
+#define DT_UNKNOWN   0
+#define DT_FIFO      1
+#define DT_CHR       2
+#define DT_DIR       4
+#define DT_BLK       6
+#define DT_REG       8
+#define DT_LNK      10
+#define DT_SOCK     12
+
+#endif /* __MCPU_SYS_ASM_DIRENT_H */
diff --git a/sysroot/include/sys/asm/errno.h b/sysroot/include/sys/asm/errno.h
new file mode 100644
index 0000000..f018923
--- /dev/null
+++ b/sysroot/include/sys/asm/errno.h
@@ -0,0 +1,155 @@
+
+#ifndef __MCPU_SYS_ASM_ERRNO_H
+#define __MCPU_SYS_ASM_ERRNO_H
+
+/*
+ * Stable MCPU system-call error numbers.
+ *
+ * These are MCPU ABI values.  They are not HOST errno numbers even when
+ * the numeric values happen to coincide on a particular HOST system.
+ */
+
+#define EPERM               1   /* Operation not permitted */
+#define ENOENT              2   /* No such file or directory */
+#define ESRCH               3   /* No such process */
+#define EINTR               4   /* Interrupted system call */
+#define EIO                 5   /* I/O error */
+#define ENXIO               6   /* No such device or address */
+#define E2BIG               7   /* Argument list too long */
+#define ENOEXEC             8   /* Exec format error */
+#define EBADF               9   /* Bad file number */
+#define ECHILD             10   /* No child processes */
+#define EAGAIN             11   /* Try again */
+#define ENOMEM             12   /* Out of memory */
+#define EACCES             13   /* Permission denied */
+#define EFAULT             14   /* Bad address */
+#define ENOTBLK            15   /* Block device required */
+#define EBUSY              16   /* Device or resource busy */
+#define EEXIST             17   /* File exists */
+#define EXDEV              18   /* Cross-device link */
+#define ENODEV             19   /* No such device */
+#define ENOTDIR            20   /* Not a directory */
+#define EISDIR             21   /* Is a directory */
+#define EINVAL             22   /* Invalid argument */
+#define ENFILE             23   /* File table overflow */
+#define EMFILE             24   /* Too many open files */
+#define ENOTTY             25   /* Not a typewriter */
+#define ETXTBSY            26   /* Text file busy */
+#define EFBIG              27   /* File too large */
+#define ENOSPC             28   /* No space left on device */
+#define ESPIPE             29   /* Illegal seek */
+#define EROFS              30   /* Read-only file system */
+#define EMLINK             31   /* Too many links */
+#define EPIPE              32   /* Broken pipe */
+#define EDOM               33   /* Math argument out of domain */
+#define ERANGE             34   /* Math result not representable */
+#define EDEADLK            35   /* Resource deadlock would occur */
+#define ENAMETOOLONG       36   /* File name too long */
+#define ENOLCK             37   /* No record locks available */
+#define ENOSYS             38   /* Invalid system call number */
+#define ENOTEMPTY          39   /* Directory not empty */
+#define ELOOP              40   /* Too many symbolic links encountered */
+
+#define EWOULDBLOCK EAGAIN   /* Operation would block */
+
+#define ENOMSG             42   /* No message of desired type */
+#define EIDRM              43   /* Identifier removed */
+#define ECHRNG             44   /* Channel number out of range */
+#define EL2NSYNC           45   /* Level 2 not synchronized */
+#define EL3HLT             46   /* Level 3 halted */
+#define EL3RST             47   /* Level 3 reset */
+#define ELNRNG             48   /* Link number out of range */
+#define EUNATCH            49   /* Protocol driver not attached */
+#define ENOCSI             50   /* No CSI structure available */
+#define EL2HLT             51   /* Level 2 halted */
+#define EBADE              52   /* Invalid exchange */
+#define EBADR              53   /* Invalid request descriptor */
+#define EXFULL             54   /* Exchange full */
+#define ENOANO             55   /* No anode */
+#define EBADRQC            56   /* Invalid request code */
+#define EBADSLT            57   /* Invalid slot */
+
+#define EDEADLOCK EDEADLK    /* File locking deadlock */
+
+#define EBFONT             59   /* Bad font file format */
+#define ENOSTR             60   /* Device not a stream */
+#define ENODATA            61   /* No data available */
+#define ETIME              62   /* Timer expired */
+#define ENOSR              63   /* Out of streams resources */
+#define ENONET             64   /* Machine is not on the network */
+#define ENOPKG             65   /* Package not installed */
+#define EREMOTE            66   /* Object is remote */
+#define ENOLINK            67   /* Link has been severed */
+#define EADV               68   /* Advertise error */
+#define ESRMNT             69   /* Srmount error */
+#define ECOMM              70   /* Communication error on send */
+#define EPROTO             71   /* Protocol error */
+#define EMULTIHOP          72   /* Multihop attempted */
+#define EDOTDOT            73   /* RFS specific error */
+#define EBADMSG            74   /* Not a data message */
+#define EOVERFLOW          75   /* Value too large for defined data type */
+#define ENOTUNIQ           76   /* Name not unique on network */
+#define EBADFD             77   /* File descriptor in bad state */
+#define EREMCHG            78   /* Remote address changed */
+#define ELIBACC            79   /* Cannot access a needed shared library */
+#define ELIBBAD            80   /* Accessing a corrupted shared library */
+#define ELIBSCN            81   /* .lib section in a.out corrupted */
+#define ELIBMAX            82   /* Too many shared libraries */
+#define ELIBEXEC           83   /* Cannot exec a shared library directly */
+#define EILSEQ             84   /* Illegal byte sequence */
+#define ERESTART           85   /* Interrupted syscall should be restarted */
+#define ESTRPIPE           86   /* Streams pipe error */
+#define EUSERS             87   /* Too many users */
+#define ENOTSOCK           88   /* Socket operation on non-socket */
+#define EDESTADDRREQ       89   /* Destination address required */
+#define EMSGSIZE           90   /* Message too long */
+#define EPROTOTYPE         91   /* Protocol wrong type for socket */
+#define ENOPROTOOPT        92   /* Protocol not available */
+#define EPROTONOSUPPORT    93   /* Protocol not supported */
+#define ESOCKTNOSUPPORT    94   /* Socket type not supported */
+#define EOPNOTSUPP         95   /* Operation not supported */
+#define EPFNOSUPPORT       96   /* Protocol family not supported */
+#define EAFNOSUPPORT       97   /* Address family not supported */
+#define EADDRINUSE         98   /* Address already in use */
+#define EADDRNOTAVAIL      99   /* Cannot assign requested address */
+#define ENETDOWN          100   /* Network is down */
+#define ENETUNREACH       101   /* Network is unreachable */
+#define ENETRESET         102   /* Network dropped connection because of reset */
+#define ECONNABORTED      103   /* Software caused connection abort */
+#define ECONNRESET        104   /* Connection reset by peer */
+#define ENOBUFS           105   /* No buffer space available */
+#define EISCONN           106   /* Transport endpoint is already connected */
+#define ENOTCONN          107   /* Transport endpoint is not connected */
+#define ESHUTDOWN         108   /* Cannot send after endpoint shutdown */
+#define ETOOMANYREFS      109   /* Too many references */
+#define ETIMEDOUT         110   /* Connection timed out */
+#define ECONNREFUSED      111   /* Connection refused */
+#define EHOSTDOWN         112   /* Host is down */
+#define EHOSTUNREACH      113   /* No route to host */
+#define EALREADY          114   /* Operation already in progress */
+#define EINPROGRESS       115   /* Operation now in progress */
+#define ESTALE            116   /* Stale file handle */
+#define EUCLEAN           117   /* Structure needs cleaning */
+#define ENOTNAM           118   /* Not a XENIX named type file */
+#define ENAVAIL           119   /* No XENIX semaphores available */
+#define EISNAM            120   /* Is a named type file */
+#define EREMOTEIO         121   /* Remote I/O error */
+#define EDQUOT            122   /* Quota exceeded */
+#define ENOMEDIUM         123   /* No medium found */
+#define EMEDIUMTYPE       124   /* Wrong medium type */
+#define ECANCELED         125   /* Operation canceled */
+#define ENOKEY            126   /* Required key not available */
+#define EKEYEXPIRED       127   /* Key has expired */
+#define EKEYREVOKED       128   /* Key has been revoked */
+#define EKEYREJECTED      129   /* Key was rejected by service */
+#define EOWNERDEAD        130   /* Owner died */
+#define ENOTRECOVERABLE   131   /* State not recoverable */
+#define ERFKILL           132   /* Operation not possible due to RF-kill */
+#define EHWPOISON         133   /* Memory page has hardware error */
+#define EFTYPE            134   /* Wrong file type for intended operation */
+
+#define ENOTSUP EOPNOTSUPP   /* Operation not supported */
+
+#define EUNKNOWN         4095   /* Unknown or unmapped HOST error */
+
+#endif /* __MCPU_SYS_ASM_ERRNO_H */
diff --git a/sysroot/include/sys/asm/fcntl.h b/sysroot/include/sys/asm/fcntl.h
new file mode 100644
index 0000000..921c3b7
--- /dev/null
+++ b/sysroot/include/sys/asm/fcntl.h
@@ -0,0 +1,50 @@
+
+#ifndef __MCPU_SYS_ASM_FCNTL_H
+#define __MCPU_SYS_ASM_FCNTL_H
+
+/* MCPU open(2) ABI flags.  They are guest values, not HOST O_* values. */
+#define O_ACCMODE   00000003
+#define O_RDONLY    00000000
+#define O_WRONLY    00000001
+#define O_RDWR      00000002
+#define O_CREAT     00000100
+#define O_EXCL      00000200
+#define O_NOCTTY    00000400
+#define O_TRUNC     00001000
+#define O_APPEND    00002000
+#define O_NONBLOCK  00004000
+
+/* MCPU pipe2(2) descriptor-creation flag. */
+#define O_CLOEXEC   02000000
+
+/* MCPU fcntl(2) commands.  These are guest ABI values. */
+#define F_DUPFD      0
+#define F_GETFD      1
+#define F_SETFD      2
+#define F_GETFL      3
+#define F_SETFL      4
+
+/* Guest descriptor flags. */
+#define FD_CLOEXEC   1
+
+/* MCPU permission/mode bits used by open/creat/mkdir/chmod/fchmod. */
+#define S_ISUID     00004000
+#define S_ISGID     00002000
+#define S_ISVTX     00001000
+
+#define S_IRWXU     00000700
+#define S_IRUSR     00000400
+#define S_IWUSR     00000200
+#define S_IXUSR     00000100
+
+#define S_IRWXG     00000070
+#define S_IRGRP     00000040
+#define S_IWGRP     00000020
+#define S_IXGRP     00000010
+
+#define S_IRWXO     00000007
+#define S_IROTH     00000004
+#define S_IWOTH     00000002
+#define S_IXOTH     00000001
+
+#endif /* __MCPU_SYS_ASM_FCNTL_H */
diff --git a/sysroot/include/sys/asm/mpu-errno.h b/sysroot/include/sys/asm/mpu-errno.h
new file mode 100644
index 0000000..3f42751
--- /dev/null
+++ b/sysroot/include/sys/asm/mpu-errno.h
@@ -0,0 +1,42 @@
+
+#ifndef __MCPU_SYS_ASM_MPU_ERRNO_H
+#define __MCPU_SYS_ASM_MPU_ERRNO_H
+
+/*
+ * MPU -- Math Processor Unit error numbers.
+ *
+ * These values describe the error-state registers of the MCPU mathematical
+ * coprocessor and intentionally preserve the LibMPU 1.0.25 names and values.
+ */
+#define __EUNKNOWN__              0   /* Unknown error type */
+
+/* Integer error types. */
+#define __I_ESIZE__               1   /* Invalid size of operand(s) */
+#define __I_ESHIFT__              2   /* Invalid number of shifts */
+#define __I_ENUMBER__             3   /* Invalid number */
+#define __I_ERADIX__              4   /* Invalid radix */
+#define __I_MAX_ERRNO             5
+
+/* Real error types. */
+#define __R_ESIZE__               1   /* Invalid size of operand(s) */
+#define __R_ETRUNC__              2   /* Invalid number of TRUNC bits */
+#define __R_MAX_ERRNO             3
+
+/* Complex error types. */
+#define __C_EDIVZEROBYZERO__      1   /* Complex division by zero */
+#define __C_ELOGOFZERO__          2   /* LOG of zero magnitude */
+#define __C_EPOWOFZERO__          3   /* POW of zero magnitude */
+#define __C_MAX_ERRNO             4
+
+/* Math error types. */
+#define __DOMAIN__                1   /* Argument domain error */
+#define __SING__                  2   /* Argument singularity */
+#define __OVERFLOW__              3   /* Overflow range error */
+#define __UNDERFLOW__             4   /* Underflow range error */
+#define __TLOSS__                 5   /* Total loss of precision */
+#define __PLOSS__                 6   /* Partial loss of precision */
+#define __INVALID__               7   /* Invalid operation */
+#define __INEXACT__               8   /* Inexact result */
+#define __M_MAX_ERRNO             9
+
+#endif /* __MCPU_SYS_ASM_MPU_ERRNO_H */
diff --git a/sysroot/include/sys/asm/select.h b/sysroot/include/sys/asm/select.h
new file mode 100644
index 0000000..2e3c8d1
--- /dev/null
+++ b/sysroot/include/sys/asm/select.h
@@ -0,0 +1,18 @@
+
+#ifndef __MCPU_SYS_ASM_SELECT_H
+#define __MCPU_SYS_ASM_SELECT_H
+
+#include <sys/asm/time.h>
+
+/* MCPU select(2) descriptor-set ABI.  The set covers all 256 guest fd values. */
+#define __MCPU_FD_SETSIZE       256
+#define __MCPU_FD_SET_WORDS       4
+#define __MCPU_FD_SET_SIZE       32
+
+/* A set is four target-order u64 words.  Bit n selects guest fd n. */
+#define __MCPU_FD_SET_WORD0       0
+#define __MCPU_FD_SET_WORD1       8
+#define __MCPU_FD_SET_WORD2      16
+#define __MCPU_FD_SET_WORD3      24
+
+#endif /* __MCPU_SYS_ASM_SELECT_H */
diff --git a/sysroot/include/sys/asm/stat.h b/sysroot/include/sys/asm/stat.h
new file mode 100644
index 0000000..dd83d94
--- /dev/null
+++ b/sysroot/include/sys/asm/stat.h
@@ -0,0 +1,34 @@
+
+#ifndef __MCPU_SYS_ASM_STAT_H
+#define __MCPU_SYS_ASM_STAT_H
+
+/* Fixed external MCPU assembler ABI layout corresponding to struct __cpu_stat. */
+#define __MCPU_STAT_SIZE           128
+#define __MCPU_STAT_ST_DEV           0
+#define __MCPU_STAT_ST_INO           8
+#define __MCPU_STAT_ST_MODE         16
+#define __MCPU_STAT_ST_NLINK        24
+#define __MCPU_STAT_ST_UID          32
+#define __MCPU_STAT_ST_GID          40
+#define __MCPU_STAT_ST_RDEV         48
+#define __MCPU_STAT_ST_SIZE         56
+#define __MCPU_STAT_ST_BLKSIZE      64
+#define __MCPU_STAT_ST_BLOCKS       72
+#define __MCPU_STAT_ST_ATIME_SEC    80
+#define __MCPU_STAT_ST_ATIME_NSEC   88
+#define __MCPU_STAT_ST_MTIME_SEC    96
+#define __MCPU_STAT_ST_MTIME_NSEC  104
+#define __MCPU_STAT_ST_CTIME_SEC   112
+#define __MCPU_STAT_ST_CTIME_NSEC  120
+
+/* MCPU st_mode file-type bits. */
+#define S_IFMT      000170000
+#define S_IFIFO     000010000
+#define S_IFCHR     000020000
+#define S_IFDIR     000040000
+#define S_IFBLK     000060000
+#define S_IFREG     000100000
+#define S_IFLNK     000120000
+#define S_IFSOCK    000140000
+
+#endif /* __MCPU_SYS_ASM_STAT_H */
diff --git a/sysroot/include/sys/asm/syscall.h b/sysroot/include/sys/asm/syscall.h
new file mode 100644
index 0000000..9d5d630
--- /dev/null
+++ b/sysroot/include/sys/asm/syscall.h
@@ -0,0 +1,47 @@
+
+#ifndef __MCPU_SYS_ASM_SYSCALL_H
+#define __MCPU_SYS_ASM_SYSCALL_H
+
+/* MCPU system call numbers. */
+#define __NR_brk              10
+#define __NR_gettimeofday     0x01c
+#define __NR_clock_getres     0x021
+#define __NR_clock_gettime    0x022
+#define __NR_nanosleep        0x030
+#define __NR_clock_nanosleep  0x031
+
+#define __NR_read             0x100
+#define __NR_write            0x101
+#define __NR_lseek            0x102
+#define __NR_open             0x103
+#define __NR_creat            0x104
+#define __NR_close            0x105
+#define __NR_link             0x106
+#define __NR_unlink           0x107
+#define __NR_chdir            0x108
+#define __NR_mkdir            0x109
+#define __NR_chmod            0x10b
+#define __NR_chown            0x10c
+#define __NR_access           0x10f
+#define __NR_rename           0x111
+#define __NR_rmdir            0x112
+#define __NR_symlink          0x113
+#define __NR_readlink         0x114
+
+#define __NR_stat             0x115
+#define __NR_fstat            0x116
+#define __NR_lstat            0x117
+#define __NR_fcntl            0x119
+#define __NR_pipe2            0x11a
+#define __NR_getdents         0x11d
+#define __NR_select           0x11e
+#define __NR_fsync            0x120
+#define __NR_truncate         0x121
+#define __NR_ftruncate        0x122
+#define __NR_fchmod           0x123
+#define __NR_fchown           0x124
+#define __NR_fchdir           0x125
+#define __NR_dup              0x126
+#define __NR_dup2             0x127
+
+#endif /* __MCPU_SYS_ASM_SYSCALL_H */
diff --git a/sysroot/include/sys/asm/time.h b/sysroot/include/sys/asm/time.h
new file mode 100644
index 0000000..38932d5
--- /dev/null
+++ b/sysroot/include/sys/asm/time.h
@@ -0,0 +1,22 @@
+
+#ifndef __MCPU_SYS_ASM_TIME_H
+#define __MCPU_SYS_ASM_TIME_H
+
+/* HOST-independent MCPU clock IDs. */
+#define CLOCK_REALTIME   0
+#define CLOCK_MONOTONIC  1
+
+/* MCPU clock_nanosleep(2) flag. */
+#define TIMER_ABSTIME    1
+
+/* Fixed MCPU timeval ABI: two signed 64-bit fields. */
+#define __MCPU_TIMEVAL_SIZE       16
+#define __MCPU_TIMEVAL_TV_SEC      0
+#define __MCPU_TIMEVAL_TV_USEC     8
+
+/* Fixed MCPU timespec ABI: two signed 64-bit fields. */
+#define __MCPU_TIMESPEC_SIZE      16
+#define __MCPU_TIMESPEC_TV_SEC     0
+#define __MCPU_TIMESPEC_TV_NSEC    8
+
+#endif /* __MCPU_SYS_ASM_TIME_H */
diff --git a/sysroot/include/sys/asm/types.h b/sysroot/include/sys/asm/types.h
new file mode 100644
index 0000000..7866f0f
--- /dev/null
+++ b/sysroot/include/sys/asm/types.h
@@ -0,0 +1,16 @@
+
+#ifndef __MCPU_SYS_ASM_TYPES_H
+#define __MCPU_SYS_ASM_TYPES_H
+
+/* Scalar widths of the descriptor-I/O syscall ABI. */
+#define __MCPU_FD_BITS       32
+#define __MCPU_SIZE_BITS     64
+#define __MCPU_SSIZE_BITS    64
+#define __MCPU_OFF_BITS      64
+#define __MCPU_MODE_BITS     32
+#define __MCPU_UID_BITS      64
+#define __MCPU_GID_BITS      64
+#define __MCPU_ID_NO_CHANGE  -1
+#define __MCPU_PTR_BITS      64
+
+#endif /* __MCPU_SYS_ASM_TYPES_H */
diff --git a/sysroot/include/sys/asm/unistd.h b/sysroot/include/sys/asm/unistd.h
new file mode 100644
index 0000000..4ff629c
--- /dev/null
+++ b/sysroot/include/sys/asm/unistd.h
@@ -0,0 +1,23 @@
+
+#ifndef __MCPU_SYS_ASM_UNISTD_H
+#define __MCPU_SYS_ASM_UNISTD_H
+
+#define STDIN_FILENO   0
+#define STDOUT_FILENO  1
+#define STDERR_FILENO  2
+
+/* pipe2(2) writes two u64 guest descriptors to this fixed output array. */
+#define __MCPU_PIPEFD_SIZE   16
+#define __MCPU_PIPEFD_READ    0
+#define __MCPU_PIPEFD_WRITE   8
+
+#define F_OK           0
+#define X_OK           1
+#define W_OK           2
+#define R_OK           4
+
+#define SEEK_SET       0
+#define SEEK_CUR       1
+#define SEEK_END       2
+
+#endif /* __MCPU_SYS_ASM_UNISTD_H */
diff --git a/sysroot/usr/src/mcpu/crt/crt0.S b/sysroot/usr/src/mcpu/crt/crt0.S
new file mode 100644
index 0000000..47a0bc0
--- /dev/null
+++ b/sysroot/usr/src/mcpu/crt/crt0.S
@@ -0,0 +1,22 @@
+; MCPU HLL PROGRAM adapter.
+
+.global __mcpu_crt_startup
+.global main
+
+.text
+__mcpu_crt_hll_program:
+_start_life:
+        CALL    __mcpu_crt_startup
+
+        ; Persistent McpuStartup is again at top-level SP after RET.
+        LDSP    r64@0x7fe00, 8
+        LDSP    r64@0x7fe08, 16
+
+        ; main(int64 argc, PTR64 argv)
+        ADJSP   -16
+        STSP    0, r64@0x7fe00
+        STSP    8, r64@0x7fe08
+        CALL    main
+        ADJSP   16
+
+        EXIT    r32@0x7fffc
diff --git a/sysroot/usr/src/mcpu/crt/crt1.S b/sysroot/usr/src/mcpu/crt/crt1.S
new file mode 100644
index 0000000..34880e1
--- /dev/null
+++ b/sysroot/usr/src/mcpu/crt/crt1.S
@@ -0,0 +1,58 @@
+; MCPU HLL MODEL adapter.
+
+.global __mcpu_crt_startup
+.global init
+.global life
+
+.init
+__mcpu_crt_hll_model:
+_start:
+        CALL    __mcpu_crt_startup
+
+        ; init(int64 argc, PTR64 argv)
+        LDSP    r64@0x7fe00, 8
+        LDSP    r64@0x7fe08, 16
+        ADJSP   -16
+        STSP    0, r64@0x7fe00
+        STSP    8, r64@0x7fe08
+        CALL    init
+        ADJSP   16
+
+        CLR     r32@0x7fe10
+        ICMP    r32@0x7fffc, r32@0x7fe10
+        JZ      .L_init_ok
+        EXIT    r32@0x7fffc
+
+.L_init_ok:
+        END
+
+.text
+_life:
+.L_life_loop:
+        CALL    life
+
+        ; LIFE_CONTINUE == INT32_MIN == -2147483648.
+        LDI     r32@0x7fe10, -2147483648
+        ICMP    r32@0x7fffc, r32@0x7fe10
+        JZ      .L_life_continue
+
+        CLR     r32@0x7fe10
+        ICMP    r32@0x7fffc, r32@0x7fe10
+        JZ      .L_life_end
+        JS      .L_life_reserved
+
+        ; Positive status is a MODEL error.
+        EXIT    r32@0x7fffc
+
+.L_life_continue:
+        END
+        JMP     .L_life_loop
+
+.L_life_end:
+        EXIT    r32@0x7fffc
+
+.L_life_reserved:
+        ; Negative values other than INT32_MIN are reserved by ABI v1.
+        ; Current CRT maps programmer-contract violation to status 1.
+        LDI     r32@0x7fe10, 1
+        EXIT    r32@0x7fe10
diff --git a/sysroot/usr/src/mcpu/crt/crti.S b/sysroot/usr/src/mcpu/crt/crti.S
new file mode 100644
index 0000000..042a1b0
--- /dev/null
+++ b/sysroot/usr/src/mcpu/crt/crti.S
@@ -0,0 +1,67 @@
+; Common MCPU HLL startup support.
+;
+; This object is part of LibMCPU CRT.  It validates McpuStartup, initializes
+; the target runtime hooks, and records whether normal HLL lifetime has begun.
+
+.global __mcpu_libc_init
+.global __mcpu_init_array
+.global __mcpu_crt_startup
+.global __mcpu_crt_state
+
+.data
+.align 8
+__mcpu_crt_state:
+        .integer 64, 0
+
+.text
+__mcpu_crt_startup:
+        ; CALL pushed one 8-byte return PC.  McpuStartup therefore begins at
+        ; SP+8 while this helper is active.
+        CLR     r64@0x7ff00
+        STORE   __mcpu_crt_state, r64@0x7ff00
+
+        ; McpuStartup.version == 1.
+        LDSP    r32@0x7ff08, 8
+        LDI     r32@0x7ff0c, 1
+        ICMP    r32@0x7ff08, r32@0x7ff0c
+        JNZ     .L_startup_failure
+
+        ; McpuStartup.size == 32.
+        LDSP    r32@0x7ff08, 12
+        LDI     r32@0x7ff0c, 32
+        ICMP    r32@0x7ff08, r32@0x7ff0c
+        JNZ     .L_startup_failure
+
+        ; HLL argc is int64.  Reject uint64 values with the sign bit set,
+        ; equivalently argc > 0x7fffffffffffffff.
+        LDSP    r64@0x7ff10, 16
+        CLR     r64@0x7ff18
+        ICMP    r64@0x7ff10, r64@0x7ff18
+        JS      .L_startup_failure
+
+        ; argv must be the canonical persistent array immediately following
+        ; the 32-byte McpuStartup structure.
+        LDSP    r64@0x7ff20, 24
+        LEASP   r64@0x7ff28, 40
+        ICMP    r64@0x7ff20, r64@0x7ff28
+        JNZ     .L_startup_failure
+
+        ; McpuStartup.reserved is zero in version 1.
+        LDSP    r64@0x7ff30, 32
+        ICMP    r64@0x7ff30, r64@0x7ff18
+        JNZ     .L_startup_failure
+
+        CALL    __mcpu_libc_init
+        CALL    __mcpu_init_array
+
+        LDI     r64@0x7ff00, 1
+        STORE   __mcpu_crt_state, r64@0x7ff00
+        RET
+
+.L_startup_failure:
+        ; EXIT must happen with the top-level STACK state restored.  Discard
+        ; this helper's return PC without RET, then terminate.  _fini sees
+        ; PRE_RUNTIME state and therefore performs END only.
+        ADJSP   8
+        LDI     r32@0x7ff38, 1
+        EXIT    r32@0x7ff38
diff --git a/sysroot/usr/src/mcpu/crt/crtn.S b/sysroot/usr/src/mcpu/crt/crtn.S
new file mode 100644
index 0000000..aeed44c
--- /dev/null
+++ b/sysroot/usr/src/mcpu/crt/crtn.S
@@ -0,0 +1,20 @@
+; Common MCPU HLL finalization.
+
+.global __mcpu_crt_state
+.global fini
+.global __mcpu_fini_array
+.global __mcpu_libc_fini
+
+.fini
+_fini:
+        LOAD    r64@0x7fd00, __mcpu_crt_state
+        LDI     r64@0x7fd08, 1
+        ICMP    r64@0x7fd00, r64@0x7fd08
+        JNZ     .L_pre_runtime
+
+        CALL    fini
+        CALL    __mcpu_fini_array
+        CALL    __mcpu_libc_fini
+
+.L_pre_runtime:
+        END