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Message-Id: <20240506180112.1045944-2-jcmvbkbc@gmail.com>
Date: Mon, 6 May 2024 11:01:12 -0700
From: Max Filippov <jcmvbkbc@...il.com>
To: musl@...ts.openwall.com
Cc: Rich Felker <dalias@...c.org>,
Max Filippov <jcmvbkbc@...il.com>
Subject: [RFC v3 1/1] xtensa: add port
Signed-off-by: Max Filippov <jcmvbkbc@...il.com>
---
Changes v2->v3:
- fix semid_ds::sem_nsems type
- drop store to GOT entry at offset 12 from arch/xtensa/crt_arch.h
- add alignment to all assembly function entry points
- add .literal_position directive to vfork
Changes v1->v2:
- rebase to 1.2.5
- drop xtensa-config.h, use __XCHAL_* macros directly where needed
- fix max_align_t definition
- drop duplications from arch/xtensa/bits/mman.h
- drop xtensa call0/windowed ABI ifdef checks
- fix mcontext_t definition
- drop endianness indication from the LDSO_ARCH string
- rewrite __tlsdesc_dynamic implementation
- fix sigsetjmp
- rewrite __set_thread_area as C function
- fix ctid argument fetch in __clone implementation
- drop arch/xtensa/bits/termios.h
- add arch/xtensa/bits/msg.h, arch/xtensa/bits/sem.h,
arch/xtensa/bits/shm.h and arch/xtensa/bits/ipcstat.h
- add src/ldso/xtensa/dlsym.s and src/ldso/xtensa/dlsym_time64.S
- add arch/xtensa/bits/poll.h
- replace REL_RELATIVE with REL_SYMBOLIC
---
arch/xtensa/arch.mak | 1 +
arch/xtensa/atomic_arch.h | 25 ++
arch/xtensa/bits/alltypes.h.in | 27 ++
arch/xtensa/bits/float.h | 16 +
arch/xtensa/bits/ioctl.h | 219 ++++++++++++++
arch/xtensa/bits/ipcstat.h | 1 +
arch/xtensa/bits/limits.h | 1 +
arch/xtensa/bits/mman.h | 20 ++
arch/xtensa/bits/msg.h | 27 ++
arch/xtensa/bits/poll.h | 3 +
arch/xtensa/bits/posix.h | 2 +
arch/xtensa/bits/reg.h | 2 +
arch/xtensa/bits/sem.h | 22 ++
arch/xtensa/bits/setjmp.h | 1 +
arch/xtensa/bits/shm.h | 29 ++
arch/xtensa/bits/signal.h | 92 ++++++
arch/xtensa/bits/stat.h | 23 ++
arch/xtensa/bits/stdint.h | 20 ++
arch/xtensa/bits/syscall.h.in | 407 ++++++++++++++++++++++++++
arch/xtensa/bits/user.h | 4 +
arch/xtensa/crt_arch.h | 47 +++
arch/xtensa/kstat.h | 18 ++
arch/xtensa/pthread_arch.h | 11 +
arch/xtensa/reloc.h | 32 ++
arch/xtensa/syscall_arch.h | 104 +++++++
configure | 8 +
crt/xtensa/crti.S | 23 ++
crt/xtensa/crtn.S | 15 +
include/elf.h | 74 +++++
src/internal/xtensa/syscall.s | 14 +
src/ldso/xtensa/dlsym.s | 7 +
src/ldso/xtensa/dlsym_time64.S | 3 +
src/ldso/xtensa/tlsdesc.s | 25 ++
src/process/xtensa/vfork.s | 15 +
src/setjmp/xtensa/longjmp.s | 18 ++
src/setjmp/xtensa/setjmp.s | 21 ++
src/signal/xtensa/restore.s | 10 +
src/signal/xtensa/sigsetjmp.s | 22 ++
src/thread/xtensa/__set_thread_area.c | 9 +
src/thread/xtensa/__unmapself.s | 9 +
src/thread/xtensa/clone.S | 42 +++
src/thread/xtensa/syscall_cp.s | 34 +++
42 files changed, 1503 insertions(+)
create mode 100644 arch/xtensa/arch.mak
create mode 100644 arch/xtensa/atomic_arch.h
create mode 100644 arch/xtensa/bits/alltypes.h.in
create mode 100644 arch/xtensa/bits/float.h
create mode 100644 arch/xtensa/bits/ioctl.h
create mode 100644 arch/xtensa/bits/ipcstat.h
create mode 100644 arch/xtensa/bits/limits.h
create mode 100644 arch/xtensa/bits/mman.h
create mode 100644 arch/xtensa/bits/msg.h
create mode 100644 arch/xtensa/bits/poll.h
create mode 100644 arch/xtensa/bits/posix.h
create mode 100644 arch/xtensa/bits/reg.h
create mode 100644 arch/xtensa/bits/sem.h
create mode 100644 arch/xtensa/bits/setjmp.h
create mode 100644 arch/xtensa/bits/shm.h
create mode 100644 arch/xtensa/bits/signal.h
create mode 100644 arch/xtensa/bits/stat.h
create mode 100644 arch/xtensa/bits/stdint.h
create mode 100644 arch/xtensa/bits/syscall.h.in
create mode 100644 arch/xtensa/bits/user.h
create mode 100644 arch/xtensa/crt_arch.h
create mode 100644 arch/xtensa/kstat.h
create mode 100644 arch/xtensa/pthread_arch.h
create mode 100644 arch/xtensa/reloc.h
create mode 100644 arch/xtensa/syscall_arch.h
create mode 100644 crt/xtensa/crti.S
create mode 100644 crt/xtensa/crtn.S
create mode 100644 src/internal/xtensa/syscall.s
create mode 100644 src/ldso/xtensa/dlsym.s
create mode 100644 src/ldso/xtensa/dlsym_time64.S
create mode 100644 src/ldso/xtensa/tlsdesc.s
create mode 100644 src/process/xtensa/vfork.s
create mode 100644 src/setjmp/xtensa/longjmp.s
create mode 100644 src/setjmp/xtensa/setjmp.s
create mode 100644 src/signal/xtensa/restore.s
create mode 100644 src/signal/xtensa/sigsetjmp.s
create mode 100644 src/thread/xtensa/__set_thread_area.c
create mode 100644 src/thread/xtensa/__unmapself.s
create mode 100644 src/thread/xtensa/clone.S
create mode 100644 src/thread/xtensa/syscall_cp.s
diff --git a/arch/xtensa/arch.mak b/arch/xtensa/arch.mak
new file mode 100644
index 000000000000..aa4d05ceff38
--- /dev/null
+++ b/arch/xtensa/arch.mak
@@ -0,0 +1 @@
+COMPAT_SRC_DIRS = compat/time32
diff --git a/arch/xtensa/atomic_arch.h b/arch/xtensa/atomic_arch.h
new file mode 100644
index 000000000000..ece0f5b19456
--- /dev/null
+++ b/arch/xtensa/atomic_arch.h
@@ -0,0 +1,25 @@
+#if __XCHAL_HAVE_S32C1I
+#define a_cas a_cas
+static inline int a_cas(volatile int *p, int t, int s)
+{
+ __asm__ __volatile__ (
+ " wsr %2, scompare1\n"
+ " s32c1i %0, %1\n"
+ : "+a"(s), "+m"(*p)
+ : "a"(t)
+ : "memory" );
+ return s;
+}
+#endif
+
+#define a_barrier a_barrier
+static inline void a_barrier()
+{
+ __asm__ __volatile__ ("memw" : : : "memory");
+}
+
+#define a_crash a_crash
+static inline void a_crash()
+{
+ __asm__ __volatile__ ("ill" : : : "memory");
+}
diff --git a/arch/xtensa/bits/alltypes.h.in b/arch/xtensa/bits/alltypes.h.in
new file mode 100644
index 000000000000..24f4d20995af
--- /dev/null
+++ b/arch/xtensa/bits/alltypes.h.in
@@ -0,0 +1,27 @@
+#define _REDIR_TIME64 1
+#define _Addr int
+#define _Int64 long long
+#define _Reg int
+
+#if __XTENSA_EB__
+#define __BYTE_ORDER 4321
+#elif __XTENSA_EL__
+#define __BYTE_ORDER 1234
+#else
+#error Unknown endianness
+#endif
+
+#define __LONG_MAX 0x7fffffffL
+
+#ifndef __cplusplus
+#ifdef __WCHAR_TYPE__
+TYPEDEF __WCHAR_TYPE__ wchar_t;
+#else
+TYPEDEF unsigned wchar_t;
+#endif
+#endif
+
+TYPEDEF float float_t;
+TYPEDEF double double_t;
+
+TYPEDEF struct { long long __ll; long double __ld; } max_align_t;
diff --git a/arch/xtensa/bits/float.h b/arch/xtensa/bits/float.h
new file mode 100644
index 000000000000..c4a655e7b58c
--- /dev/null
+++ b/arch/xtensa/bits/float.h
@@ -0,0 +1,16 @@
+#define FLT_EVAL_METHOD 0
+
+#define LDBL_TRUE_MIN 4.94065645841246544177e-324L
+#define LDBL_MIN 2.22507385850720138309e-308L
+#define LDBL_MAX 1.79769313486231570815e+308L
+#define LDBL_EPSILON 2.22044604925031308085e-16L
+
+#define LDBL_MANT_DIG 53
+#define LDBL_MIN_EXP (-1021)
+#define LDBL_MAX_EXP 1024
+
+#define LDBL_DIG 15
+#define LDBL_MIN_10_EXP (-307)
+#define LDBL_MAX_10_EXP 308
+
+#define DECIMAL_DIG 17
diff --git a/arch/xtensa/bits/ioctl.h b/arch/xtensa/bits/ioctl.h
new file mode 100644
index 000000000000..f30e3a699bf8
--- /dev/null
+++ b/arch/xtensa/bits/ioctl.h
@@ -0,0 +1,219 @@
+#define _IOC(a,b,c,d) ( ((a)<<30) | ((b)<<8) | (c) | ((d)<<16) )
+#define _IOC_NONE 0U
+#define _IOC_READ 2U
+#define _IOC_WRITE 1U
+
+#define _IO(a,b) _IOC(_IOC_NONE,(a),(b),0)
+#define _IOW(a,b,c) _IOC(_IOC_WRITE,(a),(b),sizeof(c))
+#define _IOR(a,b,c) _IOC(_IOC_READ,(a),(b),sizeof(c))
+#define _IOWR(a,b,c) _IOC(_IOC_READ|_IOC_WRITE,(a),(b),sizeof(c))
+
+#define FIOCLEX _IO('f', 1)
+#define FIONCLEX _IO('f', 2)
+#define FIOASYNC _IOW('f', 125, int)
+#define FIONBIO _IOW('f', 126, int)
+#define FIONREAD _IOR('f', 127, int)
+#define TIOCINQ FIONREAD
+#define FIOQSIZE _IOR('f', 128, loff_t)
+
+#define TCGETS 0x5401
+#define TCSETS 0x5402
+#define TCSETSW 0x5403
+#define TCSETSF 0x5404
+
+#define TCGETA 0x80127417 /* _IOR('t', 23, struct termio) */
+#define TCSETA 0x40127418 /* _IOW('t', 24, struct termio) */
+#define TCSETAW 0x40127419 /* _IOW('t', 25, struct termio) */
+#define TCSETAF 0x4012741C /* _IOW('t', 28, struct termio) */
+
+#define TCSBRK _IO('t', 29)
+#define TCXONC _IO('t', 30)
+#define TCFLSH _IO('t', 31)
+
+#define TIOCSWINSZ 0x40087467 /* _IOW('t', 103, struct winsize) */
+#define TIOCGWINSZ 0x80087468 /* _IOR('t', 104, struct winsize) */
+#define TIOCSTART _IO('t', 110) /* start output, like ^Q */
+#define TIOCSTOP _IO('t', 111) /* stop output, like ^S */
+#define TIOCOUTQ _IOR('t', 115, int) /* output queue size */
+
+#define TIOCSPGRP _IOW('t', 118, int)
+#define TIOCGPGRP _IOR('t', 119, int)
+
+#define TIOCEXCL _IO('T', 12)
+#define TIOCNXCL _IO('T', 13)
+#define TIOCSCTTY _IO('T', 14)
+
+#define TIOCSTI _IOW('T', 18, char)
+#define TIOCMGET _IOR('T', 21, unsigned int)
+#define TIOCMBIS _IOW('T', 22, unsigned int)
+#define TIOCMBIC _IOW('T', 23, unsigned int)
+#define TIOCMSET _IOW('T', 24, unsigned int)
+# define TIOCM_LE 0x001
+# define TIOCM_DTR 0x002
+# define TIOCM_RTS 0x004
+# define TIOCM_ST 0x008
+# define TIOCM_SR 0x010
+# define TIOCM_CTS 0x020
+# define TIOCM_CAR 0x040
+# define TIOCM_RNG 0x080
+# define TIOCM_DSR 0x100
+# define TIOCM_CD TIOCM_CAR
+# define TIOCM_RI TIOCM_RNG
+
+#define TIOCGSOFTCAR _IOR('T', 25, unsigned int)
+#define TIOCSSOFTCAR _IOW('T', 26, unsigned int)
+#define TIOCLINUX _IOW('T', 28, char)
+#define TIOCCONS _IO('T', 29)
+#define TIOCGSERIAL 0x803C541E /*_IOR('T', 30, struct serial_struct)*/
+#define TIOCSSERIAL 0x403C541F /*_IOW('T', 31, struct serial_struct)*/
+#define TIOCPKT _IOW('T', 32, int)
+# define TIOCPKT_DATA 0
+# define TIOCPKT_FLUSHREAD 1
+# define TIOCPKT_FLUSHWRITE 2
+# define TIOCPKT_STOP 4
+# define TIOCPKT_START 8
+# define TIOCPKT_NOSTOP 16
+# define TIOCPKT_DOSTOP 32
+# define TIOCPKT_IOCTL 64
+
+
+#define TIOCNOTTY _IO('T', 34)
+#define TIOCSETD _IOW('T', 35, int)
+#define TIOCGETD _IOR('T', 36, int)
+#define TCSBRKP _IOW('T', 37, int) /* Needed for POSIX tcsendbreak()*/
+#define TIOCSBRK _IO('T', 39) /* BSD compatibility */
+#define TIOCCBRK _IO('T', 40) /* BSD compatibility */
+#define TIOCGSID _IOR('T', 41, pid_t) /* Return the session ID of FD*/
+#define TCGETS2 _IOR('T', 42, struct termios2)
+#define TCSETS2 _IOW('T', 43, struct termios2)
+#define TCSETSW2 _IOW('T', 44, struct termios2)
+#define TCSETSF2 _IOW('T', 45, struct termios2)
+#define TIOCGRS485 _IOR('T', 46, struct serial_rs485)
+#define TIOCSRS485 _IOWR('T', 47, struct serial_rs485)
+#define TIOCGPTN _IOR('T',0x30, unsigned int) /* Get Pty Number (of pty-mux device) */
+#define TIOCSPTLCK _IOW('T',0x31, int) /* Lock/unlock Pty */
+#define TIOCGDEV _IOR('T',0x32, unsigned int) /* Get primary device node of /dev/console */
+#define TIOCSIG _IOW('T',0x36, int) /* Generate signal on Pty slave */
+#define TIOCVHANGUP _IO('T', 0x37)
+#define TIOCGPKT _IOR('T', 0x38, int) /* Get packet mode state */
+#define TIOCGPTLCK _IOR('T', 0x39, int) /* Get Pty lock state */
+#define TIOCGEXCL _IOR('T', 0x40, int) /* Get exclusive mode state */
+
+#define TIOCSERCONFIG _IO('T', 83)
+#define TIOCSERGWILD _IOR('T', 84, int)
+#define TIOCSERSWILD _IOW('T', 85, int)
+#define TIOCGLCKTRMIOS 0x5456
+#define TIOCSLCKTRMIOS 0x5457
+#define TIOCSERGSTRUCT 0x5458 /* For debugging only */
+#define TIOCSERGETLSR _IOR('T', 89, unsigned int) /* Get line status reg. */
+ /* ioctl (fd, TIOCSERGETLSR, &result) where result may be as below */
+#define TIOCSERGETMULTI 0x80a8545a /* Get multiport config */
+ /* _IOR('T', 90, struct serial_multiport_struct) */
+#define TIOCSERSETMULTI 0x40a8545b /* Set multiport config */
+ /* _IOW('T', 91, struct serial_multiport_struct) */
+
+#define TIOCMIWAIT _IO('T', 92) /* wait for a change on serial input line(s) */
+#define TIOCGICOUNT 0x545D /* read serial port inline interrupt counts */
+
+#define TIOCM_LE 0x001
+#define TIOCM_DTR 0x002
+#define TIOCM_RTS 0x004
+#define TIOCM_ST 0x008
+#define TIOCM_SR 0x010
+#define TIOCM_CTS 0x020
+#define TIOCM_CAR 0x040
+#define TIOCM_RNG 0x080
+#define TIOCM_DSR 0x100
+#define TIOCM_CD TIOCM_CAR
+#define TIOCM_RI TIOCM_RNG
+#define TIOCM_OUT1 0x2000
+#define TIOCM_OUT2 0x4000
+#define TIOCM_LOOP 0x8000
+#define TIOCM_MODEM_BITS TIOCM_OUT2
+
+#define N_TTY 0
+#define N_SLIP 1
+#define N_MOUSE 2
+#define N_PPP 3
+#define N_STRIP 4
+#define N_AX25 5
+#define N_X25 6
+#define N_6PACK 7
+#define N_MASC 8
+#define N_R3964 9
+#define N_PROFIBUS_FDL 10
+#define N_IRDA 11
+#define N_SMSBLOCK 12
+#define N_HDLC 13
+#define N_SYNC_PPP 14
+#define N_HCI 15
+
+#define FIOGETOWN _IOR('f', 123, int)
+#define FIOSETOWN _IOW('f', 124, int)
+#define SIOCATMARK _IOR('s', 7, int)
+#define SIOCSPGRP _IOW('s', 8, pid_t)
+#define SIOCGPGRP _IOR('s', 9, pid_t)
+#define SIOCGSTAMP 0x8906 /* Get stamp (timeval) */
+#define SIOCGSTAMPNS 0x8907 /* Get stamp (timespec) */
+
+#define SIOCADDRT 0x890B
+#define SIOCDELRT 0x890C
+#define SIOCRTMSG 0x890D
+
+#define SIOCGIFNAME 0x8910
+#define SIOCSIFLINK 0x8911
+#define SIOCGIFCONF 0x8912
+#define SIOCGIFFLAGS 0x8913
+#define SIOCSIFFLAGS 0x8914
+#define SIOCGIFADDR 0x8915
+#define SIOCSIFADDR 0x8916
+#define SIOCGIFDSTADDR 0x8917
+#define SIOCSIFDSTADDR 0x8918
+#define SIOCGIFBRDADDR 0x8919
+#define SIOCSIFBRDADDR 0x891a
+#define SIOCGIFNETMASK 0x891b
+#define SIOCSIFNETMASK 0x891c
+#define SIOCGIFMETRIC 0x891d
+#define SIOCSIFMETRIC 0x891e
+#define SIOCGIFMEM 0x891f
+#define SIOCSIFMEM 0x8920
+#define SIOCGIFMTU 0x8921
+#define SIOCSIFMTU 0x8922
+#define SIOCSIFHWADDR 0x8924
+#define SIOCGIFENCAP 0x8925
+#define SIOCSIFENCAP 0x8926
+#define SIOCGIFHWADDR 0x8927
+#define SIOCGIFSLAVE 0x8929
+#define SIOCSIFSLAVE 0x8930
+#define SIOCADDMULTI 0x8931
+#define SIOCDELMULTI 0x8932
+#define SIOCGIFINDEX 0x8933
+#define SIOGIFINDEX SIOCGIFINDEX
+#define SIOCSIFPFLAGS 0x8934
+#define SIOCGIFPFLAGS 0x8935
+#define SIOCDIFADDR 0x8936
+#define SIOCSIFHWBROADCAST 0x8937
+#define SIOCGIFCOUNT 0x8938
+
+#define SIOCGIFBR 0x8940
+#define SIOCSIFBR 0x8941
+
+#define SIOCGIFTXQLEN 0x8942
+#define SIOCSIFTXQLEN 0x8943
+
+#define SIOCDARP 0x8953
+#define SIOCGARP 0x8954
+#define SIOCSARP 0x8955
+
+#define SIOCDRARP 0x8960
+#define SIOCGRARP 0x8961
+#define SIOCSRARP 0x8962
+
+#define SIOCGIFMAP 0x8970
+#define SIOCSIFMAP 0x8971
+
+#define SIOCADDDLCI 0x8980
+#define SIOCDELDLCI 0x8981
+
+#define SIOCDEVPRIVATE 0x89F0
+#define SIOCPROTOPRIVATE 0x89E0
diff --git a/arch/xtensa/bits/ipcstat.h b/arch/xtensa/bits/ipcstat.h
new file mode 100644
index 000000000000..4f4fcb0c5b74
--- /dev/null
+++ b/arch/xtensa/bits/ipcstat.h
@@ -0,0 +1 @@
+#define IPC_STAT 0x102
diff --git a/arch/xtensa/bits/limits.h b/arch/xtensa/bits/limits.h
new file mode 100644
index 000000000000..07743b6fd61f
--- /dev/null
+++ b/arch/xtensa/bits/limits.h
@@ -0,0 +1 @@
+#define PAGESIZE 4096
diff --git a/arch/xtensa/bits/mman.h b/arch/xtensa/bits/mman.h
new file mode 100644
index 000000000000..0cc7b46b0740
--- /dev/null
+++ b/arch/xtensa/bits/mman.h
@@ -0,0 +1,20 @@
+#undef MAP_ANON
+#define MAP_ANON 0x800
+#undef MAP_NORESERVE
+#define MAP_NORESERVE 0x0400
+#undef MAP_GROWSDOWN
+#define MAP_GROWSDOWN 0x1000
+#undef MAP_DENYWRITE
+#define MAP_DENYWRITE 0x2000
+#undef MAP_EXECUTABLE
+#define MAP_EXECUTABLE 0x4000
+#undef MAP_LOCKED
+#define MAP_LOCKED 0x8000
+#undef MAP_POPULATE
+#define MAP_POPULATE 0x10000
+#undef MAP_NONBLOCK
+#define MAP_NONBLOCK 0x20000
+#undef MAP_STACK
+#define MAP_STACK 0x40000
+#undef MAP_HUGETLB
+#define MAP_HUGETLB 0x80000
diff --git a/arch/xtensa/bits/msg.h b/arch/xtensa/bits/msg.h
new file mode 100644
index 000000000000..f05f280b65e1
--- /dev/null
+++ b/arch/xtensa/bits/msg.h
@@ -0,0 +1,27 @@
+struct msqid_ds {
+ struct ipc_perm msg_perm;
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+ unsigned long __msg_stime_lo;
+ unsigned long __msg_stime_hi;
+ unsigned long __msg_rtime_lo;
+ unsigned long __msg_rtime_hi;
+ unsigned long __msg_ctime_lo;
+ unsigned long __msg_ctime_hi;
+#else
+ unsigned long __msg_stime_hi;
+ unsigned long __msg_stime_lo;
+ unsigned long __msg_rtime_hi;
+ unsigned long __msg_rtime_lo;
+ unsigned long __msg_ctime_hi;
+ unsigned long __msg_ctime_lo;
+#endif
+ unsigned long msg_cbytes;
+ msgqnum_t msg_qnum;
+ msglen_t msg_qbytes;
+ pid_t msg_lspid;
+ pid_t msg_lrpid;
+ unsigned long __unused[2];
+ time_t msg_stime;
+ time_t msg_rtime;
+ time_t msg_ctime;
+};
diff --git a/arch/xtensa/bits/poll.h b/arch/xtensa/bits/poll.h
new file mode 100644
index 000000000000..939398a79aa2
--- /dev/null
+++ b/arch/xtensa/bits/poll.h
@@ -0,0 +1,3 @@
+#define POLLWRNORM POLLOUT
+#define POLLWRBAND 0x100
+#define POLLREMOVE 0x800
diff --git a/arch/xtensa/bits/posix.h b/arch/xtensa/bits/posix.h
new file mode 100644
index 000000000000..30a38714f36d
--- /dev/null
+++ b/arch/xtensa/bits/posix.h
@@ -0,0 +1,2 @@
+#define _POSIX_V6_ILP32_OFFBIG 1
+#define _POSIX_V7_ILP32_OFFBIG 1
diff --git a/arch/xtensa/bits/reg.h b/arch/xtensa/bits/reg.h
new file mode 100644
index 000000000000..0192a2931bd7
--- /dev/null
+++ b/arch/xtensa/bits/reg.h
@@ -0,0 +1,2 @@
+#undef __WORDSIZE
+#define __WORDSIZE 32
diff --git a/arch/xtensa/bits/sem.h b/arch/xtensa/bits/sem.h
new file mode 100644
index 000000000000..57aa020ad96e
--- /dev/null
+++ b/arch/xtensa/bits/sem.h
@@ -0,0 +1,22 @@
+struct semid_ds {
+ struct ipc_perm sem_perm;
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+ unsigned long __sem_otime_lo;
+ unsigned long __sem_otime_hi;
+ unsigned long __sem_ctime_lo;
+ unsigned long __sem_ctime_hi;
+ unsigned short sem_nsems;
+ unsigned short __unused;
+#else
+ unsigned long __sem_otime_hi;
+ unsigned long __sem_otime_lo;
+ unsigned long __sem_ctime_hi;
+ unsigned long __sem_ctime_lo;
+ unsigned short __unused;
+ unsigned short sem_nsems;
+#endif
+ long __unused3;
+ long __unused4;
+ time_t sem_otime;
+ time_t sem_ctime;
+};
diff --git a/arch/xtensa/bits/setjmp.h b/arch/xtensa/bits/setjmp.h
new file mode 100644
index 000000000000..decd26dca07a
--- /dev/null
+++ b/arch/xtensa/bits/setjmp.h
@@ -0,0 +1 @@
+typedef unsigned long __jmp_buf[6];
diff --git a/arch/xtensa/bits/shm.h b/arch/xtensa/bits/shm.h
new file mode 100644
index 000000000000..2febc663f709
--- /dev/null
+++ b/arch/xtensa/bits/shm.h
@@ -0,0 +1,29 @@
+#define SHMLBA 4096
+
+struct shmid_ds {
+ struct ipc_perm shm_perm;
+ size_t shm_segsz;
+ unsigned long __shm_atime_lo;
+ unsigned long __shm_atime_hi;
+ unsigned long __shm_dtime_lo;
+ unsigned long __shm_dtime_hi;
+ unsigned long __shm_ctime_lo;
+ unsigned long __shm_ctime_hi;
+ pid_t shm_cpid;
+ pid_t shm_lpid;
+ unsigned long shm_nattch;
+ unsigned long __unused[2];
+ time_t shm_atime;
+ time_t shm_dtime;
+ time_t shm_ctime;
+};
+
+struct shminfo {
+ unsigned long shmmax, shmmin, shmmni, shmseg, shmall, __unused[4];
+};
+
+struct shm_info {
+ int __used_ids;
+ unsigned long shm_tot, shm_rss, shm_swp;
+ unsigned long __swap_attempts, __swap_successes;
+};
diff --git a/arch/xtensa/bits/signal.h b/arch/xtensa/bits/signal.h
new file mode 100644
index 000000000000..aa1b958abc9a
--- /dev/null
+++ b/arch/xtensa/bits/signal.h
@@ -0,0 +1,92 @@
+#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
+ || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+
+#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+#define MINSIGSTKSZ 2048
+#define SIGSTKSZ 8192
+#endif
+
+#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+typedef struct sigcontext {
+ unsigned long sc_pc;
+ unsigned long sc_ps;
+ unsigned long sc_lbeg;
+ unsigned long sc_lend;
+ unsigned long sc_lcount;
+ unsigned long sc_sar;
+ unsigned long sc_acclo;
+ unsigned long sc_acchi;
+ unsigned long sc_a[16];
+ void *sc_xtregs;
+} mcontext_t;
+#else
+typedef struct {
+ unsigned long __regs[25];
+} mcontext_t;
+#endif
+
+struct sigaltstack {
+ void *ss_sp;
+ int ss_flags;
+ size_t ss_size;
+};
+
+typedef struct __ucontext {
+ unsigned long uc_flags;
+ struct __ucontext *uc_link;
+ stack_t uc_stack;
+ mcontext_t uc_mcontext;
+ sigset_t uc_sigmask;
+} ucontext_t;
+
+#define SA_NOCLDSTOP 0x00000001
+#define SA_NOCLDWAIT 0x00000002 /* not supported yet */
+#define SA_SIGINFO 0x00000004
+#define SA_ONSTACK 0x08000000
+#define SA_RESTART 0x10000000
+#define SA_NODEFER 0x40000000
+#define SA_RESETHAND 0x80000000
+
+#define SA_NOMASK SA_NODEFER
+#define SA_ONESHOT SA_RESETHAND
+
+#define SA_RESTORER 0x04000000
+
+#endif
+
+#define SIGHUP 1
+#define SIGINT 2
+#define SIGQUIT 3
+#define SIGILL 4
+#define SIGTRAP 5
+#define SIGABRT 6
+#define SIGIOT 6
+#define SIGBUS 7
+#define SIGFPE 8
+#define SIGKILL 9
+#define SIGUSR1 10
+#define SIGSEGV 11
+#define SIGUSR2 12
+#define SIGPIPE 13
+#define SIGALRM 14
+#define SIGTERM 15
+#define SIGSTKFLT 16
+#define SIGCHLD 17
+#define SIGCONT 18
+#define SIGSTOP 19
+#define SIGTSTP 20
+#define SIGTTIN 21
+#define SIGTTOU 22
+#define SIGURG 23
+#define SIGXCPU 24
+#define SIGXFSZ 25
+#define SIGVTALRM 26
+#define SIGPROF 27
+#define SIGWINCH 28
+#define SIGIO 29
+#define SIGPOLL SIGIO
+#define SIGPWR 30
+#define SIGSYS 31
+#define SIGUNUSED 31
+
+#define _NSIG 65
diff --git a/arch/xtensa/bits/stat.h b/arch/xtensa/bits/stat.h
new file mode 100644
index 000000000000..31d92fec1232
--- /dev/null
+++ b/arch/xtensa/bits/stat.h
@@ -0,0 +1,23 @@
+/* copied from kernel definition, but with padding replaced
+ * by the corresponding correctly-sized userspace types. */
+
+struct stat {
+ dev_t st_dev;
+ ino_t st_ino;
+ mode_t st_mode;
+ nlink_t st_nlink;
+ uid_t st_uid;
+ gid_t st_gid;
+ dev_t st_rdev;
+ off_t st_size;
+ blksize_t st_blksize;
+ long __st_padding1;
+ blkcnt_t st_blocks;
+ struct {
+ long tv_sec;
+ long tv_nsec;
+ } __st_atim32, __st_mtim32, __st_ctim32;
+ struct timespec st_atim;
+ struct timespec st_mtim;
+ struct timespec st_ctim;
+};
diff --git a/arch/xtensa/bits/stdint.h b/arch/xtensa/bits/stdint.h
new file mode 100644
index 000000000000..d1b2712199ac
--- /dev/null
+++ b/arch/xtensa/bits/stdint.h
@@ -0,0 +1,20 @@
+typedef int32_t int_fast16_t;
+typedef int32_t int_fast32_t;
+typedef uint32_t uint_fast16_t;
+typedef uint32_t uint_fast32_t;
+
+#define INT_FAST16_MIN INT32_MIN
+#define INT_FAST32_MIN INT32_MIN
+
+#define INT_FAST16_MAX INT32_MAX
+#define INT_FAST32_MAX INT32_MAX
+
+#define UINT_FAST16_MAX UINT32_MAX
+#define UINT_FAST32_MAX UINT32_MAX
+
+#define INTPTR_MIN INT32_MIN
+#define INTPTR_MAX INT32_MAX
+#define UINTPTR_MAX UINT32_MAX
+#define PTRDIFF_MIN INT32_MIN
+#define PTRDIFF_MAX INT32_MAX
+#define SIZE_MAX UINT32_MAX
diff --git a/arch/xtensa/bits/syscall.h.in b/arch/xtensa/bits/syscall.h.in
new file mode 100644
index 000000000000..ec3135e12b07
--- /dev/null
+++ b/arch/xtensa/bits/syscall.h.in
@@ -0,0 +1,407 @@
+#define __NR_spill 0
+#define __NR_xtensa 1
+#define __NR_available4 2
+#define __NR_available5 3
+#define __NR_available6 4
+#define __NR_available7 5
+#define __NR_available8 6
+#define __NR_available9 7
+#define __NR_open 8
+#define __NR_close 9
+#define __NR_dup 10
+#define __NR_dup2 11
+#define __NR_read 12
+#define __NR_write 13
+#define __NR_select 14
+#define __NR_lseek 15
+#define __NR_poll 16
+#define __NR__llseek 17
+#define __NR_epoll_wait 18
+#define __NR_epoll_ctl 19
+#define __NR_epoll_create 20
+#define __NR_creat 21
+#define __NR_truncate 22
+#define __NR_ftruncate 23
+#define __NR_readv 24
+#define __NR_writev 25
+#define __NR_fsync 26
+#define __NR_fdatasync 27
+#define __NR_truncate64 28
+#define __NR_ftruncate64 29
+#define __NR_pread64 30
+#define __NR_pwrite64 31
+#define __NR_link 32
+#define __NR_rename 33
+#define __NR_symlink 34
+#define __NR_readlink 35
+#define __NR_mknod 36
+#define __NR_pipe 37
+#define __NR_unlink 38
+#define __NR_rmdir 39
+#define __NR_mkdir 40
+#define __NR_chdir 41
+#define __NR_fchdir 42
+#define __NR_getcwd 43
+#define __NR_chmod 44
+#define __NR_chown 45
+#define __NR_stat 46
+#define __NR_stat64 47
+#define __NR_lchown 48
+#define __NR_lstat 49
+#define __NR_lstat64 50
+#define __NR_available51 51
+#define __NR_fchmod 52
+#define __NR_fchown 53
+#define __NR_fstat 54
+#define __NR_fstat64 55
+#define __NR_flock 56
+#define __NR_access 57
+#define __NR_umask 58
+#define __NR_getdents 59
+#define __NR_getdents64 60
+#define __NR_fcntl64 61
+#define __NR_fallocate 62
+#define __NR_fadvise64_64 63
+#define __NR_utime 64 /* glibc 2.3.3 ?? */
+#define __NR_utimes 65
+#define __NR_ioctl 66
+#define __NR_fcntl 67
+#define __NR_setxattr 68
+#define __NR_getxattr 69
+#define __NR_listxattr 70
+#define __NR_removexattr 71
+#define __NR_lsetxattr 72
+#define __NR_lgetxattr 73
+#define __NR_llistxattr 74
+#define __NR_lremovexattr 75
+#define __NR_fsetxattr 76
+#define __NR_fgetxattr 77
+#define __NR_flistxattr 78
+#define __NR_fremovexattr 79
+#define __NR_mmap2 80
+#define __NR_munmap 81
+#define __NR_mprotect 82
+#define __NR_brk 83
+#define __NR_mlock 84
+#define __NR_munlock 85
+#define __NR_mlockall 86
+#define __NR_munlockall 87
+#define __NR_mremap 88
+#define __NR_msync 89
+#define __NR_mincore 90
+#define __NR_madvise 91
+#define __NR_shmget 92
+#define __NR_shmat 93
+#define __NR_shmctl 94
+#define __NR_shmdt 95
+#define __NR_socket 96
+#define __NR_setsockopt 97
+#define __NR_getsockopt 98
+#define __NR_shutdown 99
+#define __NR_bind 100
+#define __NR_connect 101
+#define __NR_listen 102
+#define __NR_accept 103
+#define __NR_getsockname 104
+#define __NR_getpeername 105
+#define __NR_sendmsg 106
+#define __NR_recvmsg 107
+#define __NR_send 108
+#define __NR_recv 109
+#define __NR_sendto 110
+#define __NR_recvfrom 111
+#define __NR_socketpair 112
+#define __NR_sendfile 113
+#define __NR_sendfile64 114
+#define __NR_sendmmsg 115
+#define __NR_clone 116
+#define __NR_execve 117
+#define __NR_exit 118
+#define __NR_exit_group 119
+#define __NR_getpid 120
+#define __NR_wait4 121
+#define __NR_waitid 122
+#define __NR_kill 123
+#define __NR_tkill 124
+#define __NR_tgkill 125
+#define __NR_set_tid_address 126
+#define __NR_gettid 127
+#define __NR_setsid 128
+#define __NR_getsid 129
+#define __NR_prctl 130
+#define __NR_personality 131
+#define __NR_getpriority 132
+#define __NR_setpriority 133
+#define __NR_setitimer 134
+#define __NR_getitimer 135
+#define __NR_setuid 136
+#define __NR_getuid 137
+#define __NR_setgid 138
+#define __NR_getgid 139
+#define __NR_geteuid 140
+#define __NR_getegid 141
+#define __NR_setreuid 142
+#define __NR_setregid 143
+#define __NR_setresuid 144
+#define __NR_getresuid 145
+#define __NR_setresgid 146
+#define __NR_getresgid 147
+#define __NR_setpgid 148
+#define __NR_getpgid 149
+#define __NR_getppid 150
+#define __NR_getpgrp 151
+#define __NR_reserved152 152 /* set_thread_area */
+#define __NR_reserved153 153 /* get_thread_area */
+#define __NR_times 154
+#define __NR_acct 155
+#define __NR_sched_setaffinity 156
+#define __NR_sched_getaffinity 157
+#define __NR_capget 158
+#define __NR_capset 159
+#define __NR_ptrace 160
+#define __NR_semtimedop 161
+#define __NR_semget 162
+#define __NR_semop 163
+#define __NR_semctl 164
+#define __NR_available165 165
+#define __NR_msgget 166
+#define __NR_msgsnd 167
+#define __NR_msgrcv 168
+#define __NR_msgctl 169
+#define __NR_available170 170
+#define __NR_umount2 171
+#define __NR_mount 172
+#define __NR_swapon 173
+#define __NR_chroot 174
+#define __NR_pivot_root 175
+#define __NR_umount 176
+#define __NR_swapoff 177
+#define __NR_sync 178
+#define __NR_syncfs 179
+#define __NR_setfsuid 180
+#define __NR_setfsgid 181
+#define __NR_sysfs 182
+#define __NR_ustat 183
+#define __NR_statfs 184
+#define __NR_fstatfs 185
+#define __NR_statfs64 186
+#define __NR_fstatfs64 187
+#define __NR_setrlimit 188
+#define __NR_getrlimit 189
+#define __NR_getrusage 190
+#define __NR_futex 191
+#define __NR_gettimeofday 192
+#define __NR_settimeofday 193
+#define __NR_adjtimex 194
+#define __NR_nanosleep 195
+#define __NR_getgroups 196
+#define __NR_setgroups 197
+#define __NR_sethostname 198
+#define __NR_setdomainname 199
+#define __NR_syslog 200
+#define __NR_vhangup 201
+#define __NR_uselib 202
+#define __NR_reboot 203
+#define __NR_quotactl 204
+#define __NR_nfsservctl 205
+#define __NR__sysctl 206
+#define __NR_bdflush 207
+#define __NR_uname 208
+#define __NR_sysinfo 209
+#define __NR_init_module 210
+#define __NR_delete_module 211
+#define __NR_sched_setparam 212
+#define __NR_sched_getparam 213
+#define __NR_sched_setscheduler 214
+#define __NR_sched_getscheduler 215
+#define __NR_sched_get_priority_max 216
+#define __NR_sched_get_priority_min 217
+#define __NR_sched_rr_get_interval 218
+#define __NR_sched_yield 219
+#define __NR_available222 222
+#define __NR_restart_syscall 223
+#define __NR_sigaltstack 224
+#define __NR_rt_sigreturn 225
+#define __NR_rt_sigaction 226
+#define __NR_rt_sigprocmask 227
+#define __NR_rt_sigpending 228
+#define __NR_rt_sigtimedwait 229
+#define __NR_rt_sigqueueinfo 230
+#define __NR_rt_sigsuspend 231
+#define __NR_mq_open 232
+#define __NR_mq_unlink 233
+#define __NR_mq_timedsend 234
+#define __NR_mq_timedreceive 235
+#define __NR_mq_notify 236
+#define __NR_mq_getsetattr 237
+#define __NR_available238 238
+#define __NR_io_setup 239
+#define __NR_io_destroy 240
+#define __NR_io_submit 241
+#define __NR_io_getevents 242
+#define __NR_io_cancel 243
+#define __NR_clock_settime 244
+#define __NR_clock_gettime 245
+#define __NR_clock_getres 246
+#define __NR_clock_nanosleep 247
+#define __NR_timer_create 248
+#define __NR_timer_delete 249
+#define __NR_timer_settime 250
+#define __NR_timer_gettime 251
+#define __NR_timer_getoverrun 252
+#define __NR_reserved253 253
+#define __NR_lookup_dcookie 254
+#define __NR_available255 255
+#define __NR_add_key 256
+#define __NR_request_key 257
+#define __NR_keyctl 258
+#define __NR_available259 259
+#define __NR_readahead 260
+#define __NR_remap_file_pages 261
+#define __NR_migrate_pages 262
+#define __NR_mbind 263
+#define __NR_get_mempolicy 264
+#define __NR_set_mempolicy 265
+#define __NR_unshare 266
+#define __NR_move_pages 267
+#define __NR_splice 268
+#define __NR_tee 269
+#define __NR_vmsplice 270
+#define __NR_available271 271
+#define __NR_pselect6 272
+#define __NR_ppoll 273
+#define __NR_epoll_pwait 274
+#define __NR_epoll_create1 275
+#define __NR_inotify_init 276
+#define __NR_inotify_add_watch 277
+#define __NR_inotify_rm_watch 278
+#define __NR_inotify_init1 279
+#define __NR_getcpu 280
+#define __NR_kexec_load 281
+#define __NR_ioprio_set 282
+#define __NR_ioprio_get 283
+#define __NR_set_robust_list 284
+#define __NR_get_robust_list 285
+#define __NR_available286 286
+#define __NR_available287 287
+#define __NR_openat 288
+#define __NR_mkdirat 289
+#define __NR_mknodat 290
+#define __NR_unlinkat 291
+#define __NR_renameat 292
+#define __NR_linkat 293
+#define __NR_symlinkat 294
+#define __NR_readlinkat 295
+#define __NR_utimensat 296
+#define __NR_fchownat 297
+#define __NR_futimesat 298
+#define __NR_fstatat64 299
+#define __NR_fchmodat 300
+#define __NR_faccessat 301
+#define __NR_available302 302
+#define __NR_available303 303
+#define __NR_signalfd 304
+#define __NR_eventfd 306
+#define __NR_recvmmsg 307
+#define __NR_setns 308
+#define __NR_signalfd4 309
+#define __NR_dup3 310
+#define __NR_pipe2 311
+#define __NR_timerfd_create 312
+#define __NR_timerfd_settime 313
+#define __NR_timerfd_gettime 314
+#define __NR_available315 315
+#define __NR_eventfd2 316
+#define __NR_preadv 317
+#define __NR_pwritev 318
+#define __NR_available319 319
+#define __NR_fanotify_init 320
+#define __NR_fanotify_mark 321
+#define __NR_process_vm_readv 322
+#define __NR_process_vm_writev 323
+#define __NR_name_to_handle_at 324
+#define __NR_open_by_handle_at 325
+#define __NR_sync_file_range2 326
+#define __NR_perf_event_open 327
+#define __NR_rt_tgsigqueueinfo 328
+#define __NR_clock_adjtime 329
+#define __NR_prlimit64 330
+#define __NR_kcmp 331
+#define __NR_finit_module 332
+#define __NR_accept4 333
+#define __NR_sched_setattr 334
+#define __NR_sched_getattr 335
+#define __NR_renameat2 336
+#define __NR_seccomp 337
+#define __NR_getrandom 338
+#define __NR_memfd_create 339
+#define __NR_bpf 340
+#define __NR_execveat 341
+#define __NR_userfaultfd 342
+#define __NR_membarrier 343
+#define __NR_mlock2 344
+#define __NR_copy_file_range 345
+#define __NR_preadv2 346
+#define __NR_pwritev2 347
+#define __NR_pkey_mprotect 348
+#define __NR_pkey_alloc 349
+#define __NR_pkey_free 350
+#define __NR_statx 351
+#define __NR_rseq 352
+#define __NR_clock_gettime64 403
+#define __NR_clock_settime64 404
+#define __NR_clock_adjtime64 405
+#define __NR_clock_getres_time64 406
+#define __NR_clock_nanosleep_time64 407
+#define __NR_timer_gettime64 408
+#define __NR_timer_settime64 409
+#define __NR_timerfd_gettime64 410
+#define __NR_timerfd_settime64 411
+#define __NR_utimensat_time64 412
+#define __NR_pselect6_time64 413
+#define __NR_ppoll_time64 414
+#define __NR_io_pgetevents_time64 416
+#define __NR_recvmmsg_time64 417
+#define __NR_mq_timedsend_time64 418
+#define __NR_mq_timedreceive_time64 419
+#define __NR_semtimedop_time64 420
+#define __NR_rt_sigtimedwait_time64 421
+#define __NR_futex_time64 422
+#define __NR_sched_rr_get_interval_time64 423
+#define __NR_pidfd_send_signal 424
+#define __NR_io_uring_setup 425
+#define __NR_io_uring_enter 426
+#define __NR_io_uring_register 427
+#define __NR_open_tree 428
+#define __NR_move_mount 429
+#define __NR_fsopen 430
+#define __NR_fsconfig 431
+#define __NR_fsmount 432
+#define __NR_fspick 433
+#define __NR_pidfd_open 434
+#define __NR_clone3 435
+#define __NR_close_range 436
+#define __NR_openat2 437
+#define __NR_pidfd_getfd 438
+#define __NR_faccessat2 439
+#define __NR_process_madvise 440
+#define __NR_epoll_pwait2 441
+#define __NR_mount_setattr 442
+#define __NR_quotactl_fd 443
+#define __NR_landlock_create_ruleset 444
+#define __NR_landlock_add_rule 445
+#define __NR_landlock_restrict_self 446
+#define __NR_process_mrelease 448
+#define __NR_futex_waitv 449
+#define __NR_set_mempolicy_home_node 450
+#define __NR_cachestat 451
+#define __NR_fchmodat2 452
+#define __NR_map_shadow_stack 453
+#define __NR_futex_wake 454
+#define __NR_futex_wait 455
+#define __NR_futex_requeue 456
+#define __NR_statmount 457
+#define __NR_listmount 458
+#define __NR_lsm_get_self_attr 459
+#define __NR_lsm_set_self_attr 460
+#define __NR_lsm_list_modules 461
diff --git a/arch/xtensa/bits/user.h b/arch/xtensa/bits/user.h
new file mode 100644
index 000000000000..8ac7526f19e0
--- /dev/null
+++ b/arch/xtensa/bits/user.h
@@ -0,0 +1,4 @@
+#define ELF_NGREG 128
+#define ELF_NFPREG 18
+typedef unsigned long elf_greg_t, elf_gregset_t[ELF_NGREG];
+typedef unsigned int elf_fpreg_t, elf_fpregset_t[ELF_NFPREG];
diff --git a/arch/xtensa/crt_arch.h b/arch/xtensa/crt_arch.h
new file mode 100644
index 000000000000..ac9b6a070be5
--- /dev/null
+++ b/arch/xtensa/crt_arch.h
@@ -0,0 +1,47 @@
+#ifdef __FDPIC__
+
+__asm__(
+".text \n"
+".global " START " \n"
+START ": \n"
+" .begin no-transform\n"
+" call0 1f\n"
+"2:\n"
+" .end no-transform\n"
+" .align 4\n"
+" .literal_position\n"
+"1:\n"
+" movi a15, 2b\n"
+" sub a15, a0, a15\n"
+
+" mov a12, a4\n"
+" mov a13, a5\n"
+" mov a14, a6\n"
+#ifndef SHARED
+" mov a2, a4\n"
+" movi a3, __ROFIXUP_LIST__\n"
+" add a3, a3, a15\n"
+" movi a4, __ROFIXUP_END__\n"
+" add a4, a4, a15\n"
+" movi a0, __fdpic_fixup\n"
+" add a0, a0, a15\n"
+" callx0 a0\n"
+" mov a11, a2\n"
+#endif
+" addi a7, a1, -8\n"
+" s32i a12, a7, 0\n"
+" s32i a13, a7, 4\n"
+" mov a2, a1\n"
+" mov a3, a14\n"
+" movi a4, -16\n"
+" and a1, a7, a4\n"
+" movi a0, "START"_c\n"
+" add a0, a0, a15\n"
+" callx0 a0\n"
+);
+
+#ifndef SHARED
+#include "fdpic_crt.h"
+#endif
+
+#endif
diff --git a/arch/xtensa/kstat.h b/arch/xtensa/kstat.h
new file mode 100644
index 000000000000..9aeaf7e37296
--- /dev/null
+++ b/arch/xtensa/kstat.h
@@ -0,0 +1,18 @@
+struct kstat {
+ dev_t st_dev;
+ ino_t st_ino;
+ mode_t st_mode;
+ nlink_t st_nlink;
+ uid_t st_uid;
+ gid_t st_gid;
+ dev_t st_rdev;
+ off_t st_size;
+ blksize_t st_blksize;
+ blkcnt_t st_blocks;
+ long st_atime_sec;
+ long st_atime_nsec;
+ long st_mtime_sec;
+ long st_mtime_nsec;
+ long st_ctime_sec;
+ long st_ctime_nsec;
+};
diff --git a/arch/xtensa/pthread_arch.h b/arch/xtensa/pthread_arch.h
new file mode 100644
index 000000000000..a4bdd02863d6
--- /dev/null
+++ b/arch/xtensa/pthread_arch.h
@@ -0,0 +1,11 @@
+static inline uintptr_t __get_tp()
+{
+ uintptr_t tp;
+ __asm__ __volatile__ ("rur.threadptr %0" : "=a" (tp));
+ return tp;
+}
+
+#define TLS_ABOVE_TP
+#define GAP_ABOVE_TP 8
+
+#define MC_PC sc_pc
diff --git a/arch/xtensa/reloc.h b/arch/xtensa/reloc.h
new file mode 100644
index 000000000000..cd7a455a2d9c
--- /dev/null
+++ b/arch/xtensa/reloc.h
@@ -0,0 +1,32 @@
+#if __FDPIC__
+#define ABI_SUFFIX "-fdpic"
+#else
+#define ABI_SUFFIX ""
+#endif
+
+#define LDSO_ARCH "xtensa" ABI_SUFFIX
+
+#define TPOFF_K 0
+
+#define REL_PLT R_XTENSA_JMP_SLOT
+#define REL_GOT R_XTENSA_GLOB_DAT
+
+#if __FDPIC__
+#define REL_SYMBOLIC R_XTENSA_SYM32
+#define REL_TPOFF R_XTENSA_TLS_TPOFF
+#define REL_TLSDESC R_XTENSA_TLSDESC
+#define REL_FUNCDESC R_XTENSA_FUNCDESC
+#define REL_FUNCDESC_VAL R_XTENSA_FUNCDESC_VALUE
+
+#define DL_FDPIC 1
+#define DL_NOMMU_SUPPORT 1
+
+#define CRTJMP(pc,sp) do { \
+ register size_t a4 __asm__("a4") = ((size_t *)(sp))[-2]; \
+ __asm__ __volatile__( "mov a1, %1 ; jx %0" \
+ : : "r"(pc), "r"(sp), "r"(a4) : "memory" ); } while(0)
+
+#define GETFUNCSYM(fp, sym, got) __asm__ ( \
+ "movi %0, " #sym "@GOTOFFFUNCDESC ; add %0, %0, %1" \
+ : "=&a"(*fp) : "a"(got) : "memory" )
+#endif
diff --git a/arch/xtensa/syscall_arch.h b/arch/xtensa/syscall_arch.h
new file mode 100644
index 000000000000..63ee4e962556
--- /dev/null
+++ b/arch/xtensa/syscall_arch.h
@@ -0,0 +1,104 @@
+#define __SYSCALL_LL_E(x) \
+((union { long long ll; long l[2]; }){ .ll = x }).l[0], \
+((union { long long ll; long l[2]; }){ .ll = x }).l[1]
+#define __SYSCALL_LL_O(x) 0, __SYSCALL_LL_E((x))
+
+static inline long __syscall0(long n)
+{
+ register long a2 __asm__("a2") = n;
+
+ __asm__ __volatile__ ("syscall"
+ : "+&a"(a2)
+ :
+ : "memory");
+ return a2;
+}
+
+static inline long __syscall1(long n, long a)
+{
+ register long a2 __asm__("a2") = n;
+ register long a6 __asm__("a6") = a;
+
+ __asm__ __volatile__ ("syscall"
+ : "+&a"(a2)
+ : "a"(a6)
+ : "memory");
+ return a2;
+}
+
+static inline long __syscall2(long n, long a, long b)
+{
+ register long a2 __asm__("a2") = n;
+ register long a6 __asm__("a6") = a;
+ register long a3 __asm__("a3") = b;
+
+ __asm__ __volatile__ ("syscall"
+ : "+&a"(a2)
+ : "a"(a6), "a"(a3)
+ : "memory");
+ return a2;
+}
+
+static inline long __syscall3(long n, long a, long b, long c)
+{
+ register long a2 __asm__("a2") = n;
+ register long a6 __asm__("a6") = a;
+ register long a3 __asm__("a3") = b;
+ register long a4 __asm__("a4") = c;
+
+ __asm__ __volatile__ ("syscall"
+ : "+&a"(a2)
+ : "a"(a6), "a"(a3), "a"(a4)
+ : "memory");
+ return a2;
+}
+
+static inline long __syscall4(long n, long a, long b, long c, long d)
+{
+ register long a2 __asm__("a2") = n;
+ register long a6 __asm__("a6") = a;
+ register long a3 __asm__("a3") = b;
+ register long a4 __asm__("a4") = c;
+ register long a5 __asm__("a5") = d;
+
+ __asm__ __volatile__ ("syscall"
+ : "+&a"(a2)
+ : "a"(a6), "a"(a3), "a"(a4), "a"(a5)
+ : "memory");
+ return a2;
+}
+
+static inline long __syscall5(long n, long a, long b, long c, long d, long e)
+{
+ register long a2 __asm__("a2") = n;
+ register long a6 __asm__("a6") = a;
+ register long a3 __asm__("a3") = b;
+ register long a4 __asm__("a4") = c;
+ register long a5 __asm__("a5") = d;
+ register long a8 __asm__("a8") = e;
+
+ __asm__ __volatile__ ("syscall"
+ : "+&a"(a2)
+ : "a"(a6), "a"(a3), "a"(a4), "a"(a5), "a"(a8)
+ : "memory");
+ return a2;
+}
+
+static inline long __syscall6(long n, long a, long b, long c, long d, long e, long f)
+{
+ register long a2 __asm__("a2") = n;
+ register long a6 __asm__("a6") = a;
+ register long a3 __asm__("a3") = b;
+ register long a4 __asm__("a4") = c;
+ register long a5 __asm__("a5") = d;
+ register long a8 __asm__("a8") = e;
+ register long a9 __asm__("a9") = f;
+
+ __asm__ __volatile__ ("syscall"
+ : "+&a"(a2)
+ : "a"(a6), "a"(a3), "a"(a4), "a"(a5), "a"(a8), "a"(a9)
+ : "memory");
+ return a2;
+}
+
+#define SYSCALL_FADVISE_6_ARG
diff --git a/configure b/configure
index bc9fbe48cc44..898499ce77ba 100755
--- a/configure
+++ b/configure
@@ -340,6 +340,7 @@ riscv64*) ARCH=riscv64 ;;
riscv32*) ARCH=riscv32 ;;
sh[1-9bel-]*|sh|superh*) ARCH=sh ;;
s390x*) ARCH=s390x ;;
+xtensa*) ARCH=xtensa ;;
unknown) fail "$0: unable to detect target arch; try $0 --target=..." ;;
*) fail "$0: unknown or unsupported target \"$target\"" ;;
esac
@@ -756,6 +757,13 @@ SUBARCH=${SUBARCH}-fdpic
fi
fi
+if test "$ARCH" = "xtensa" ; then
+if trycppif __XTENSA_WINDOWED_ABI__ "$t" ; then
+fail "$0: error: compiler uses unsupported ABI by default"
+fi
+trycppif __FDPIC__ "$t" && SUBARCH=${SUBARCH}-fdpic
+fi
+
test "$SUBARCH" \
&& printf "configured for %s variant: %s\n" "$ARCH" "$ARCH$SUBARCH"
diff --git a/crt/xtensa/crti.S b/crt/xtensa/crti.S
new file mode 100644
index 000000000000..20d910820288
--- /dev/null
+++ b/crt/xtensa/crti.S
@@ -0,0 +1,23 @@
+.section .init
+.global _init
+.type _init, @function
+.align 4
+_init:
+ addi sp, sp, -16
+ s32i a0, sp, 0
+#ifdef __FDPIC__
+ s32i a12, sp, 4
+ mov a12, a11
+#endif
+
+.section .fini
+.global _fini
+.type _fini, @function
+.align 4
+_fini:
+ addi sp, sp, -16
+ s32i a0, sp, 0
+#ifdef __FDPIC__
+ s32i a12, sp, 4
+ mov a12, a11
+#endif
diff --git a/crt/xtensa/crtn.S b/crt/xtensa/crtn.S
new file mode 100644
index 000000000000..656edaa7f146
--- /dev/null
+++ b/crt/xtensa/crtn.S
@@ -0,0 +1,15 @@
+.section .init
+#ifdef __FDPIC__
+ l32i a12, sp, 4
+#endif
+ l32i a0, sp, 0
+ addi sp, sp, 16
+ ret
+
+.section .fini
+#ifdef __FDPIC__
+ l32i a12, sp, 4
+#endif
+ l32i a0, sp, 0
+ addi sp, sp, 16
+ ret
diff --git a/include/elf.h b/include/elf.h
index 3d5e13e4b6e5..fdd1e3163546 100644
--- a/include/elf.h
+++ b/include/elf.h
@@ -3406,6 +3406,80 @@ enum
#define R_LARCH_32_PCREL 99
#define R_LARCH_RELAX 100
+#define R_XTENSA_NONE 0
+#define R_XTENSA_32 1
+#define R_XTENSA_RTLD 2
+#define R_XTENSA_GLOB_DAT 3
+#define R_XTENSA_JMP_SLOT 4
+#define R_XTENSA_RELATIVE 5
+#define R_XTENSA_PLT 6
+#define R_XTENSA_OP0 8
+#define R_XTENSA_OP1 9
+#define R_XTENSA_OP2 10
+#define R_XTENSA_ASM_EXPAND 11
+#define R_XTENSA_ASM_SIMPLIFY 12
+#define R_XTENSA_32_PCREL 14
+#define R_XTENSA_GNU_VTINHERIT 15
+#define R_XTENSA_GNU_VTENTRY 16
+#define R_XTENSA_DIFF8 17
+#define R_XTENSA_DIFF16 18
+#define R_XTENSA_DIFF32 19
+#define R_XTENSA_SLOT0_OP 20
+#define R_XTENSA_SLOT1_OP 21
+#define R_XTENSA_SLOT2_OP 22
+#define R_XTENSA_SLOT3_OP 23
+#define R_XTENSA_SLOT4_OP 24
+#define R_XTENSA_SLOT5_OP 25
+#define R_XTENSA_SLOT6_OP 26
+#define R_XTENSA_SLOT7_OP 27
+#define R_XTENSA_SLOT8_OP 28
+#define R_XTENSA_SLOT9_OP 29
+#define R_XTENSA_SLOT10_OP 30
+#define R_XTENSA_SLOT11_OP 31
+#define R_XTENSA_SLOT12_OP 32
+#define R_XTENSA_SLOT13_OP 33
+#define R_XTENSA_SLOT14_OP 34
+#define R_XTENSA_SLOT0_ALT 35
+#define R_XTENSA_SLOT1_ALT 36
+#define R_XTENSA_SLOT2_ALT 37
+#define R_XTENSA_SLOT3_ALT 38
+#define R_XTENSA_SLOT4_ALT 39
+#define R_XTENSA_SLOT5_ALT 40
+#define R_XTENSA_SLOT6_ALT 41
+#define R_XTENSA_SLOT7_ALT 42
+#define R_XTENSA_SLOT8_ALT 43
+#define R_XTENSA_SLOT9_ALT 44
+#define R_XTENSA_SLOT10_ALT 45
+#define R_XTENSA_SLOT11_ALT 46
+#define R_XTENSA_SLOT12_ALT 47
+#define R_XTENSA_SLOT13_ALT 48
+#define R_XTENSA_SLOT14_ALT 49
+#define R_XTENSA_TLSDESC_FN 50
+#define R_XTENSA_TLSDESC_ARG 51
+#define R_XTENSA_TLS_DTPOFF 52
+#define R_XTENSA_TLS_TPOFF 53
+#define R_XTENSA_TLS_FUNC 54
+#define R_XTENSA_TLS_ARG 55
+#define R_XTENSA_TLS_CALL 56
+#define R_XTENSA_PDIFF8 57
+#define R_XTENSA_PDIFF16 58
+#define R_XTENSA_PDIFF32 59
+#define R_XTENSA_NDIFF8 60
+#define R_XTENSA_NDIFF16 61
+#define R_XTENSA_NDIFF32 62
+#define R_XTENSA_SYM32 63
+#define R_XTENSA_GOT 64
+#define R_XTENSA_GOTOFF 65
+#define R_XTENSA_GOTFUNCDESC 66
+#define R_XTENSA_GOTOFFFUNCDESC 67
+#define R_XTENSA_FUNCDESC 68
+#define R_XTENSA_FUNCDESC_VALUE 69
+#define R_XTENSA_TLS_GOTTPOFF 70
+#define R_XTENSA_GOTTLSDESC 71
+#define R_XTENSA_TLSDESC 72
+
+#define R_XTENSA_NUM 77
+
#ifdef __cplusplus
}
#endif
diff --git a/src/internal/xtensa/syscall.s b/src/internal/xtensa/syscall.s
new file mode 100644
index 000000000000..3112bc3890bc
--- /dev/null
+++ b/src/internal/xtensa/syscall.s
@@ -0,0 +1,14 @@
+.global __syscall
+.hidden __syscall
+.type __syscall,@function
+.align 4
+__syscall:
+ mov a8, a3
+ mov a3, a4
+ mov a4, a5
+ mov a5, a6
+ mov a6, a8
+ mov a8, a7
+ l32i a9, a1, 0
+ syscall
+ ret
diff --git a/src/ldso/xtensa/dlsym.s b/src/ldso/xtensa/dlsym.s
new file mode 100644
index 000000000000..4b7a975f3b2e
--- /dev/null
+++ b/src/ldso/xtensa/dlsym.s
@@ -0,0 +1,7 @@
+.global dlsym
+.hidden __dlsym
+.type dlsym,@function
+.align 4
+dlsym:
+ mov a4, a0
+ j __dlsym
diff --git a/src/ldso/xtensa/dlsym_time64.S b/src/ldso/xtensa/dlsym_time64.S
new file mode 100644
index 000000000000..bb2e70408f0e
--- /dev/null
+++ b/src/ldso/xtensa/dlsym_time64.S
@@ -0,0 +1,3 @@
+#define __dlsym __dlsym_redir_time64
+#define dlsym __dlsym_time64
+#include "dlsym.s"
diff --git a/src/ldso/xtensa/tlsdesc.s b/src/ldso/xtensa/tlsdesc.s
new file mode 100644
index 000000000000..4dcb78c9e92f
--- /dev/null
+++ b/src/ldso/xtensa/tlsdesc.s
@@ -0,0 +1,25 @@
+.global __tlsdesc_static
+.hidden __tlsdesc_static
+.type __tlsdesc_static,@function
+.align 4
+__tlsdesc_static:
+ l32i a2, a2, 4
+ rur.threadptr a3
+ add a2, a2, a3
+ ret
+
+.global __tlsdesc_dynamic
+.hidden __tlsdesc_dynamic
+.type __tlsdesc_dynamic,@function
+.align 4
+__tlsdesc_dynamic:
+ l32i a2, a2, 4 # a2 = &{modidx, off}
+ rur.threadptr a3
+ addi a3, a3, -4
+ l32i a3, a3, 0 # a3 = dtv
+ l32i a4, a2, 0 # a4 = modidx
+ addx4 a3, a4, a3
+ l32i a3, a3, 0 # a3 = dtv[modidx]
+ l32i a2, a2, 4
+ add a2, a2, a3 # a2 = dtv[modidx] + off
+ ret
diff --git a/src/process/xtensa/vfork.s b/src/process/xtensa/vfork.s
new file mode 100644
index 000000000000..f62dd0fb5464
--- /dev/null
+++ b/src/process/xtensa/vfork.s
@@ -0,0 +1,15 @@
+.global vfork
+.type vfork,@function
+.align 4
+.literal_position
+vfork:
+ movi a2, 116 # __NR_clone
+ movi a3, 0
+ movi a6, 0x4111 # CLONE_VM | CLONE_VFORK | SIGCHLD
+ syscall
+
+.hidden __syscall_ret
+ movi a9, __syscall_ret@GOT
+ add a9, a9, a11
+ l32i a9, a9, 0
+ jx a9
diff --git a/src/setjmp/xtensa/longjmp.s b/src/setjmp/xtensa/longjmp.s
new file mode 100644
index 000000000000..c650126c5354
--- /dev/null
+++ b/src/setjmp/xtensa/longjmp.s
@@ -0,0 +1,18 @@
+.global _longjmp
+.global longjmp
+.type _longjmp,@function
+.type longjmp,@function
+.align 4
+_longjmp:
+longjmp:
+ l32i a0, a2, 0
+ l32i a1, a2, 4
+ l32i a12, a2, 8
+ l32i a13, a2, 12
+ l32i a14, a2, 16
+ l32i a15, a2, 20
+
+ movi a2, 1
+ movnez a2, a3, a3
+
+ ret
diff --git a/src/setjmp/xtensa/setjmp.s b/src/setjmp/xtensa/setjmp.s
new file mode 100644
index 000000000000..4d229a86f83a
--- /dev/null
+++ b/src/setjmp/xtensa/setjmp.s
@@ -0,0 +1,21 @@
+.global ___setjmp
+.hidden ___setjmp
+.global __setjmp
+.global _setjmp
+.global setjmp
+.type __setjmp,@function
+.type _setjmp,@function
+.type setjmp,@function
+.align 4
+___setjmp:
+__setjmp:
+_setjmp:
+setjmp:
+ s32i a0, a2, 0
+ s32i a1, a2, 4
+ s32i a12, a2, 8
+ s32i a13, a2, 12
+ s32i a14, a2, 16
+ s32i a15, a2, 20
+ movi a2, 0
+ ret
diff --git a/src/signal/xtensa/restore.s b/src/signal/xtensa/restore.s
new file mode 100644
index 000000000000..e03e0fb798fb
--- /dev/null
+++ b/src/signal/xtensa/restore.s
@@ -0,0 +1,10 @@
+.global __restore
+.global __restore_rt
+.type __restore,@function
+.type __restore_rt,@function
+.space 1
+.align 4
+__restore:
+__restore_rt:
+ movi a2, 225 # SYS_rt_sigreturn
+ syscall
diff --git a/src/signal/xtensa/sigsetjmp.s b/src/signal/xtensa/sigsetjmp.s
new file mode 100644
index 000000000000..796564134886
--- /dev/null
+++ b/src/signal/xtensa/sigsetjmp.s
@@ -0,0 +1,22 @@
+.global sigsetjmp
+.global __sigsetjmp
+.type sigsetjmp,@function
+.type __sigsetjmp,@function
+.align 4
+sigsetjmp:
+__sigsetjmp:
+ bnez a3, 1f
+.hidden ___setjmp
+ j ___setjmp
+1:
+ s32i a0, a2, 24
+ s32i a12, a2, 36
+ mov a12, a2
+ call0 ___setjmp
+ mov a3, a2
+ mov a2, a12
+ l32i a12, a2, 36
+ l32i a0, a2, 24
+
+.hidden __sigsetjmp_tail
+ j __sigsetjmp_tail
diff --git a/src/thread/xtensa/__set_thread_area.c b/src/thread/xtensa/__set_thread_area.c
new file mode 100644
index 000000000000..56be098215c2
--- /dev/null
+++ b/src/thread/xtensa/__set_thread_area.c
@@ -0,0 +1,9 @@
+#include "pthread_impl.h"
+#include "libc.h"
+#include <elf.h>
+
+int __set_thread_area(void *p)
+{
+ __asm__ __volatile__ ("wur.threadptr %0" :: "r"(p) : "memory");
+ return 0;
+}
diff --git a/src/thread/xtensa/__unmapself.s b/src/thread/xtensa/__unmapself.s
new file mode 100644
index 000000000000..8f007e84ec43
--- /dev/null
+++ b/src/thread/xtensa/__unmapself.s
@@ -0,0 +1,9 @@
+.global __unmapself
+.type __unmapself,@function
+.align 4
+__unmapself:
+ mov a6, a2
+ movi a2, 81 # SYS_munmap
+ syscall
+ movi a2, 118 # SYS_exit
+ syscall
diff --git a/src/thread/xtensa/clone.S b/src/thread/xtensa/clone.S
new file mode 100644
index 000000000000..f7400f5c7566
--- /dev/null
+++ b/src/thread/xtensa/clone.S
@@ -0,0 +1,42 @@
+# __clone(func, stack, flags, arg, ptid, tls, ctid)
+# a2, a3, a4, a5, a6, a7, [sp]
+
+# syscall(SYS_clone, flags, stack, ptid, tls, ctid)
+# a2, a6, a3, a4, a5, a8
+
+.global __clone
+.type __clone,@function
+.align 4
+__clone:
+ # align stack and save func,arg
+ srli a3, a3, 4
+ slli a3, a3, 4
+ addi a3, a3, -16
+ s32i a2, a3, 0
+ s32i a5, a3, 4
+
+ # syscall
+ mov a2, a4
+ mov a4, a6
+ mov a6, a2
+ mov a5, a7
+ l32i a8, a1, 0
+ movi a2, 116 # SYS_clone
+ syscall
+
+ beqz a2, 1f
+ # parent
+ ret
+
+ # child
+1:
+ l32i a0, a1, 0
+ l32i a2, a1, 4
+#ifdef __FDPIC__
+ l32i a11, a0, 4
+ l32i a0, a0, 0
+#endif
+ callx0 a0
+ mov a6, a2
+ movi a2, 118 # SYS_exit
+ syscall
diff --git a/src/thread/xtensa/syscall_cp.s b/src/thread/xtensa/syscall_cp.s
new file mode 100644
index 000000000000..55575e359b87
--- /dev/null
+++ b/src/thread/xtensa/syscall_cp.s
@@ -0,0 +1,34 @@
+# __syscall_cp_asm(&self->cancel, nr, u, v, w, x, y, z)
+# a2 a3 a4 a5 a6 a7 [sp] [sp+4]
+
+# syscall(nr, u, v, w, x, y, z)
+# a2 a6 a3 a4 a5 a8 a9
+
+.global __cp_begin
+.hidden __cp_begin
+.global __cp_end
+.hidden __cp_end
+.global __cp_cancel
+.hidden __cp_cancel
+.hidden __cancel
+.global __syscall_cp_asm
+.hidden __syscall_cp_asm
+.type __syscall_cp_asm,@function
+.align 4
+__syscall_cp_asm:
+__cp_begin:
+ l32i a2, a2, 0
+ bnez a2, __cp_cancel
+ mov a2, a4
+ mov a4, a6
+ mov a6, a2
+ mov a2, a3
+ mov a3, a5
+ mov a5, a7
+ l32i a8, a1, 0
+ l32i a9, a1, 4
+ syscall
+__cp_end:
+ ret
+__cp_cancel:
+ j __cancel
--
2.39.2
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