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-rw-r--r--target/config/Config.in.libc3
-rw-r--r--toolchain/gcc/patches/6.1.0/xtensa-musl.patch27
-rw-r--r--toolchain/musl/patches/1.1.14/xtensa.patch2429
3 files changed, 2458 insertions, 1 deletions
diff --git a/target/config/Config.in.libc b/target/config/Config.in.libc
index 3b80d5337..75b72873a 100644
--- a/target/config/Config.in.libc
+++ b/target/config/Config.in.libc
@@ -50,7 +50,8 @@ config ADK_TARGET_LIB_MUSL
ADK_TARGET_ARCH_PPC64 || \
ADK_TARGET_ARCH_SH || \
ADK_TARGET_ARCH_X86 || \
- ADK_TARGET_ARCH_X86_64) && ADK_TARGET_OS_LINUX
+ ADK_TARGET_ARCH_X86_64 || \
+ ADK_TARGET_ARCH_XTENSA) && ADK_TARGET_OS_LINUX
help
http://musl-libc.org
diff --git a/toolchain/gcc/patches/6.1.0/xtensa-musl.patch b/toolchain/gcc/patches/6.1.0/xtensa-musl.patch
new file mode 100644
index 000000000..fa00abbfa
--- /dev/null
+++ b/toolchain/gcc/patches/6.1.0/xtensa-musl.patch
@@ -0,0 +1,27 @@
+From 8f018dd26d3d9992fc32f6ce04492572312d2790 Mon Sep 17 00:00:00 2001
+From: Max Filippov <jcmvbkbc@gmail.com>
+Date: Tue, 22 Mar 2016 16:07:24 +0300
+Subject: [PATCH] xtensa: support musl
+
+Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
+---
+ gcc/config/xtensa/linux.h | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/gcc/config/xtensa/linux.h b/gcc/config/xtensa/linux.h
+index 6ecb153..a41ef96 100644
+--- a/gcc/config/xtensa/linux.h
++++ b/gcc/config/xtensa/linux.h
+@@ -48,6 +48,9 @@ along with GCC; see the file COPYING3. If not see
+
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
+
++#undef MUSL_DYNAMIC_LINKER
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-xtensa.so.1"
++
+ #undef LINK_SPEC
+ #define LINK_SPEC \
+ "%{shared:-shared} \
+--
+2.1.4
+
diff --git a/toolchain/musl/patches/1.1.14/xtensa.patch b/toolchain/musl/patches/1.1.14/xtensa.patch
new file mode 100644
index 000000000..dbb25ebc6
--- /dev/null
+++ b/toolchain/musl/patches/1.1.14/xtensa.patch
@@ -0,0 +1,2429 @@
+From be7942d8dbce223ed6a75dfdf8d2cd1beb04e2eb Mon Sep 17 00:00:00 2001
+From: Max Filippov <jcmvbkbc@gmail.com>
+Date: Tue, 22 Mar 2016 02:35:58 +0300
+Subject: [PATCH 242/242] xtensa: add port
+
+Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
+Signed-off-by: Waldemar Brodkorb <wbx@uclibc-ng.org>
+---
+ arch/xtensa/atomic_arch.h | 30 ++
+ arch/xtensa/bits/alltypes.h.in | 30 ++
+ arch/xtensa/bits/endian.h | 7 +
+ arch/xtensa/bits/float.h | 16 +
+ arch/xtensa/bits/ioctl.h | 227 ++++++++++++
+ arch/xtensa/bits/limits.h | 7 +
+ arch/xtensa/bits/mman.h | 57 +++
+ arch/xtensa/bits/posix.h | 2 +
+ arch/xtensa/bits/reg.h | 2 +
+ arch/xtensa/bits/setjmp.h | 1 +
+ arch/xtensa/bits/signal.h | 88 +++++
+ arch/xtensa/bits/stat.h | 21 ++
+ arch/xtensa/bits/stdint.h | 20 +
+ arch/xtensa/bits/syscall.h | 679 ++++++++++++++++++++++++++++++++++
+ arch/xtensa/bits/termios.h | 168 +++++++++
+ arch/xtensa/bits/user.h | 4 +
+ arch/xtensa/bits/xtensa-config.h | 46 +++
+ arch/xtensa/crt_arch.h | 26 ++
+ arch/xtensa/pthread_arch.h | 11 +
+ arch/xtensa/reloc.h | 21 ++
+ arch/xtensa/syscall_arch.h | 102 +++++
+ configure | 1 +
+ crt/xtensa/crti.s | 11 +
+ crt/xtensa/crtn.s | 5 +
+ include/elf.h | 58 +++
+ ldso/dlstart.c | 13 +-
+ ldso/dynlink.c | 41 +-
+ src/internal/xtensa/syscall.s | 15 +
+ src/ldso/xtensa/tlsdesc.s | 22 ++
+ src/setjmp/xtensa/longjmp.s | 73 ++++
+ src/setjmp/xtensa/setjmp.s | 13 +
+ src/signal/xtensa/restore.s | 10 +
+ src/signal/xtensa/sigsetjmp.s | 69 ++++
+ src/signal/xtensa/windowspill.s | 78 ++++
+ src/thread/xtensa/__set_thread_area.s | 8 +
+ src/thread/xtensa/__unmapself.s | 10 +
+ src/thread/xtensa/clone.s | 39 ++
+ src/thread/xtensa/syscall_cp.s | 37 ++
+ 38 files changed, 2066 insertions(+), 2 deletions(-)
+ create mode 100644 arch/xtensa/atomic_arch.h
+ create mode 100644 arch/xtensa/bits/alltypes.h.in
+ create mode 100644 arch/xtensa/bits/endian.h
+ create mode 100644 arch/xtensa/bits/float.h
+ create mode 100644 arch/xtensa/bits/ioctl.h
+ create mode 100644 arch/xtensa/bits/limits.h
+ create mode 100644 arch/xtensa/bits/mman.h
+ create mode 100644 arch/xtensa/bits/posix.h
+ create mode 100644 arch/xtensa/bits/reg.h
+ create mode 100644 arch/xtensa/bits/setjmp.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
+ create mode 100644 arch/xtensa/bits/termios.h
+ create mode 100644 arch/xtensa/bits/user.h
+ create mode 100644 arch/xtensa/bits/xtensa-config.h
+ create mode 100644 arch/xtensa/crt_arch.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/tlsdesc.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/signal/xtensa/windowspill.s
+ create mode 100644 src/thread/xtensa/__set_thread_area.s
+ 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/atomic_arch.h b/arch/xtensa/atomic_arch.h
+new file mode 100644
+index 0000000..476814b
+--- /dev/null
++++ b/arch/xtensa/atomic_arch.h
+@@ -0,0 +1,30 @@
++#ifndef _INTERNAL_ATOMIC_H
++#define _INTERNAL_ATOMIC_H
++
++#include <stdint.h>
++
++#define a_cas a_cas
++static inline int a_cas(volatile int *p, int t, int s)
++{
++ __asm__ __volatile__(
++ " wsr %1, scompare1\n"
++ " s32c1i %0, %2, 0\n"
++ : "+a"(s)
++ : "a"(t), "a"(p)
++ : "memory" );
++ return s;
++}
++
++#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");
++}
++
++#endif
+diff --git a/arch/xtensa/bits/alltypes.h.in b/arch/xtensa/bits/alltypes.h.in
+new file mode 100644
+index 0000000..1e2a8c1
+--- /dev/null
++++ b/arch/xtensa/bits/alltypes.h.in
+@@ -0,0 +1,30 @@
++#define _Addr int
++#define _Int64 long long
++#define _Reg int
++
++TYPEDEF __builtin_va_list va_list;
++TYPEDEF __builtin_va_list __isoc_va_list;
++
++#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;
++
++TYPEDEF long time_t;
++TYPEDEF long suseconds_t;
++
++TYPEDEF struct { union { int __i[9]; volatile int __vi[9]; unsigned __s[9]; } __u; } pthread_attr_t;
++TYPEDEF struct { union { int __i[6]; volatile int __vi[6]; volatile void *volatile __p[6]; } __u; } pthread_mutex_t;
++TYPEDEF struct { union { int __i[6]; volatile int __vi[6]; volatile void *volatile __p[6]; } __u; } mtx_t;
++TYPEDEF struct { union { int __i[12]; volatile int __vi[12]; void *__p[12]; } __u; } pthread_cond_t;
++TYPEDEF struct { union { int __i[12]; volatile int __vi[12]; void *__p[12]; } __u; } cnd_t;
++TYPEDEF struct { union { int __i[8]; volatile int __vi[8]; void *__p[8]; } __u; } pthread_rwlock_t;
++TYPEDEF struct { union { int __i[5]; volatile int __vi[5]; void *__p[5]; } __u; } pthread_barrier_t;
+diff --git a/arch/xtensa/bits/endian.h b/arch/xtensa/bits/endian.h
+new file mode 100644
+index 0000000..d719907
+--- /dev/null
++++ b/arch/xtensa/bits/endian.h
+@@ -0,0 +1,7 @@
++#if __XTENSA_EB__
++#define __BYTE_ORDER __BIG_ENDIAN
++#elif __XTENSA_EL__
++#define __BYTE_ORDER __LITTLE_ENDIAN
++#else
++#error Unknown endianness
++#endif
+diff --git a/arch/xtensa/bits/float.h b/arch/xtensa/bits/float.h
+new file mode 100644
+index 0000000..c4a655e
+--- /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 0000000..e1ab80e
+--- /dev/null
++++ b/arch/xtensa/bits/ioctl.h
+@@ -0,0 +1,227 @@
++#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 TIOCSER_TEMT 0x01 /* Transmitter physically empty */
++#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 */
++
++struct winsize {
++ unsigned short ws_row;
++ unsigned short ws_col;
++ unsigned short ws_xpixel;
++ unsigned short ws_ypixel;
++};
++
++#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/limits.h b/arch/xtensa/bits/limits.h
+new file mode 100644
+index 0000000..fbc6d23
+--- /dev/null
++++ b/arch/xtensa/bits/limits.h
+@@ -0,0 +1,7 @@
++#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
++ || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
++#define LONG_BIT 32
++#endif
++
++#define LONG_MAX 0x7fffffffL
++#define LLONG_MAX 0x7fffffffffffffffLL
+diff --git a/arch/xtensa/bits/mman.h b/arch/xtensa/bits/mman.h
+new file mode 100644
+index 0000000..3125fc2
+--- /dev/null
++++ b/arch/xtensa/bits/mman.h
+@@ -0,0 +1,57 @@
++#define MAP_FAILED ((void *) -1)
++
++#define PROT_NONE 0
++#define PROT_READ 1
++#define PROT_WRITE 2
++#define PROT_EXEC 4
++#define PROT_GROWSDOWN 0x01000000
++#define PROT_GROWSUP 0x02000000
++
++#define MAP_SHARED 0x01
++#define MAP_PRIVATE 0x02
++#define MAP_FIXED 0x10
++
++#define MAP_TYPE 0x0f
++#define MAP_FILE 0x00
++#define MAP_ANON 0x800
++#define MAP_ANONYMOUS MAP_ANON
++#define MAP_NORESERVE 0x0400
++#define MAP_GROWSDOWN 0x1000
++#define MAP_DENYWRITE 0x2000
++#define MAP_EXECUTABLE 0x4000
++#define MAP_LOCKED 0x8000
++#define MAP_POPULATE 0x10000
++#define MAP_NONBLOCK 0x20000
++#define MAP_STACK 0x40000
++#define MAP_HUGETLB 0x80000
++
++#define POSIX_MADV_NORMAL 0
++#define POSIX_MADV_RANDOM 1
++#define POSIX_MADV_SEQUENTIAL 2
++#define POSIX_MADV_WILLNEED 3
++#define POSIX_MADV_DONTNEED 0
++
++#define MS_ASYNC 1
++#define MS_INVALIDATE 2
++#define MS_SYNC 4
++
++#define MCL_CURRENT 1
++#define MCL_FUTURE 2
++
++#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
++#define MADV_NORMAL 0
++#define MADV_RANDOM 1
++#define MADV_SEQUENTIAL 2
++#define MADV_WILLNEED 3
++#define MADV_DONTNEED 4
++#define MADV_REMOVE 9
++#define MADV_DONTFORK 10
++#define MADV_DOFORK 11
++#define MADV_MERGEABLE 12
++#define MADV_UNMERGEABLE 13
++#define MADV_HUGEPAGE 14
++#define MADV_NOHUGEPAGE 15
++#define MADV_DONTDUMP 16
++#define MADV_DODUMP 17
++#define MADV_HWPOISON 100
++#endif
+diff --git a/arch/xtensa/bits/posix.h b/arch/xtensa/bits/posix.h
+new file mode 100644
+index 0000000..30a3871
+--- /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 0000000..0192a29
+--- /dev/null
++++ b/arch/xtensa/bits/reg.h
+@@ -0,0 +1,2 @@
++#undef __WORDSIZE
++#define __WORDSIZE 32
+diff --git a/arch/xtensa/bits/setjmp.h b/arch/xtensa/bits/setjmp.h
+new file mode 100644
+index 0000000..b2bd974
+--- /dev/null
++++ b/arch/xtensa/bits/setjmp.h
+@@ -0,0 +1 @@
++typedef unsigned long __jmp_buf[18];
+diff --git a/arch/xtensa/bits/signal.h b/arch/xtensa/bits/signal.h
+new file mode 100644
+index 0000000..545ffd3
+--- /dev/null
++++ b/arch/xtensa/bits/signal.h
+@@ -0,0 +1,88 @@
++#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
++
++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;
++
++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 SIGLOST 29 */
++#define SIGPWR 30
++#define SIGSYS 31
++#define SIGUNUSED 31
++
++#define _NSIG 64
+diff --git a/arch/xtensa/bits/stat.h b/arch/xtensa/bits/stat.h
+new file mode 100644
+index 0000000..24231f8
+--- /dev/null
++++ b/arch/xtensa/bits/stat.h
+@@ -0,0 +1,21 @@
++/* 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 timespec st_atim;
++ struct timespec st_mtim;
++ struct timespec st_ctim;
++ long __st_padding2[2];
++};
+diff --git a/arch/xtensa/bits/stdint.h b/arch/xtensa/bits/stdint.h
+new file mode 100644
+index 0000000..d1b2712
+--- /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 b/arch/xtensa/bits/syscall.h
+new file mode 100644
+index 0000000..df8c2ab
+--- /dev/null
++++ b/arch/xtensa/bits/syscall.h
+@@ -0,0 +1,679 @@
++#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 SYS_spill 0
++#define SYS_xtensa 1
++#define SYS_available4 2
++#define SYS_available5 3
++#define SYS_available6 4
++#define SYS_available7 5
++#define SYS_available8 6
++#define SYS_available9 7
++#define SYS_open 8
++#define SYS_close 9
++#define SYS_dup 10
++#define SYS_dup2 11
++#define SYS_read 12
++#define SYS_write 13
++#define SYS_select 14
++#define SYS_lseek 15
++#define SYS_poll 16
++#define SYS__llseek 17
++#define SYS_epoll_wait 18
++#define SYS_epoll_ctl 19
++#define SYS_epoll_create 20
++#define SYS_creat 21
++#define SYS_truncate 22
++#define SYS_ftruncate 23
++#define SYS_readv 24
++#define SYS_writev 25
++#define SYS_fsync 26
++#define SYS_fdatasync 27
++#define SYS_truncate64 28
++#define SYS_ftruncate64 29
++#define SYS_pread64 30
++#define SYS_pwrite64 31
++#define SYS_link 32
++#define SYS_rename 33
++#define SYS_symlink 34
++#define SYS_readlink 35
++#define SYS_mknod 36
++#define SYS_pipe 37
++#define SYS_unlink 38
++#define SYS_rmdir 39
++#define SYS_mkdir 40
++#define SYS_chdir 41
++#define SYS_fchdir 42
++#define SYS_getcwd 43
++#define SYS_chmod 44
++#define SYS_chown 45
++#define SYS_stat 46
++#define SYS_stat64 47
++#define SYS_lchown 48
++#define SYS_lstat 49
++#define SYS_lstat64 50
++#define SYS_available51 51
++#define SYS_fchmod 52
++#define SYS_fchown 53
++#define SYS_fstat 54
++#define SYS_fstat64 55
++#define SYS_flock 56
++#define SYS_access 57
++#define SYS_umask 58
++#define SYS_getdents 59
++#define SYS_getdents64 60
++#define SYS_fcntl64 61
++#define SYS_fallocate 62
++#define SYS_fadvise64_64 63
++#define SYS_utime 64 /* glibc 2.3.3 ?? */
++#define SYS_utimes 65
++#define SYS_ioctl 66
++#define SYS_fcntl 67
++#define SYS_setxattr 68
++#define SYS_getxattr 69
++#define SYS_listxattr 70
++#define SYS_removexattr 71
++#define SYS_lsetxattr 72
++#define SYS_lgetxattr 73
++#define SYS_llistxattr 74
++#define SYS_lremovexattr 75
++#define SYS_fsetxattr 76
++#define SYS_fgetxattr 77
++#define SYS_flistxattr 78
++#define SYS_fremovexattr 79
++#define SYS_mmap2 80
++#define SYS_munmap 81
++#define SYS_mprotect 82
++#define SYS_brk 83
++#define SYS_mlock 84
++#define SYS_munlock 85
++#define SYS_mlockall 86
++#define SYS_munlockall 87
++#define SYS_mremap 88
++#define SYS_msync 89
++#define SYS_mincore 90
++#define SYS_madvise 91
++#define SYS_shmget 92
++#define SYS_shmat 93
++#define SYS_shmctl 94
++#define SYS_shmdt 95
++#define SYS_socket 96
++#define SYS_setsockopt 97
++#define SYS_getsockopt 98
++#define SYS_shutdown 99
++#define SYS_bind 100
++#define SYS_connect 101
++#define SYS_listen 102
++#define SYS_accept 103
++#define SYS_getsockname 104
++#define SYS_getpeername 105
++#define SYS_sendmsg 106
++#define SYS_recvmsg 107
++#define SYS_send 108
++#define SYS_recv 109
++#define SYS_sendto 110
++#define SYS_recvfrom 111
++#define SYS_socketpair 112
++#define SYS_sendfile 113
++#define SYS_sendfile64 114
++#define SYS_sendmmsg 115
++#define SYS_clone 116
++#define SYS_execve 117
++#define SYS_exit 118
++#define SYS_exit_group 119
++#define SYS_getpid 120
++#define SYS_wait4 121
++#define SYS_waitid 122
++#define SYS_kill 123
++#define SYS_tkill 124
++#define SYS_tgkill 125
++#define SYS_set_tid_address 126
++#define SYS_gettid 127
++#define SYS_setsid 128
++#define SYS_getsid 129
++#define SYS_prctl 130
++#define SYS_personality 131
++#define SYS_getpriority 132
++#define SYS_setpriority 133
++#define SYS_setitimer 134
++#define SYS_getitimer 135
++#define SYS_setuid 136
++#define SYS_getuid 137
++#define SYS_setgid 138
++#define SYS_getgid 139
++#define SYS_geteuid 140
++#define SYS_getegid 141
++#define SYS_setreuid 142
++#define SYS_setregid 143
++#define SYS_setresuid 144
++#define SYS_getresuid 145
++#define SYS_setresgid 146
++#define SYS_getresgid 147
++#define SYS_setpgid 148
++#define SYS_getpgid 149
++#define SYS_getppid 150
++#define SYS_getpgrp 151
++#define SYS_reserved152 152 /* set_thread_area */
++#define SYS_reserved153 153 /* get_thread_area */
++#define SYS_times 154
++#define SYS_acct 155
++#define SYS_sched_setaffinity 156
++#define SYS_sched_getaffinity 157
++#define SYS_capget 158
++#define SYS_capset 159
++#define SYS_ptrace 160
++#define SYS_semtimedop 161
++#define SYS_semget 162
++#define SYS_semop 163
++#define SYS_semctl 164
++#define SYS_available165 165
++#define SYS_msgget 166
++#define SYS_msgsnd 167
++#define SYS_msgrcv 168
++#define SYS_msgctl 169
++#define SYS_available170 170
++#define SYS_umount2 171
++#define SYS_mount 172
++#define SYS_swapon 173
++#define SYS_chroot 174
++#define SYS_pivot_root 175
++#define SYS_umount 176
++#define SYS_swapoff 177
++#define SYS_sync 178
++#define SYS_syncfs 179
++#define SYS_setfsuid 180
++#define SYS_setfsgid 181
++#define SYS_sysfs 182
++#define SYS_ustat 183
++#define SYS_statfs 184
++#define SYS_fstatfs 185
++#define SYS_statfs64 186
++#define SYS_fstatfs64 187
++#define SYS_setrlimit 188
++#define SYS_getrlimit 189
++#define SYS_getrusage 190
++#define SYS_futex 191
++#define SYS_gettimeofday 192
++#define SYS_settimeofday 193
++#define SYS_adjtimex 194
++#define SYS_nanosleep 195
++#define SYS_getgroups 196
++#define SYS_setgroups 197
++#define SYS_sethostname 198
++#define SYS_setdomainname 199
++#define SYS_syslog 200
++#define SYS_vhangup 201
++#define SYS_uselib 202
++#define SYS_reboot 203
++#define SYS_quotactl 204
++#define SYS_nfsservctl 205
++#define SYS__sysctl 206
++#define SYS_bdflush 207
++#define SYS_uname 208
++#define SYS_sysinfo 209
++#define SYS_init_module 210
++#define SYS_delete_module 211
++#define SYS_sched_setparam 212
++#define SYS_sched_getparam 213
++#define SYS_sched_setscheduler 214
++#define SYS_sched_getscheduler 215
++#define SYS_sched_get_priority_max 216
++#define SYS_sched_get_priority_min 217
++#define SYS_sched_rr_get_interval 218
++#define SYS_sched_yield 219
++#define SYS_available222 222
++#define SYS_restart_syscall 223
++#define SYS_sigaltstack 224
++#define SYS_rt_sigreturn 225
++#define SYS_rt_sigaction 226
++#define SYS_rt_sigprocmask 227
++#define SYS_rt_sigpending 228
++#define SYS_rt_sigtimedwait 229
++#define SYS_rt_sigqueueinfo 230
++#define SYS_rt_sigsuspend 231
++#define SYS_mq_open 232
++#define SYS_mq_unlink 233
++#define SYS_mq_timedsend 234
++#define SYS_mq_timedreceive 235
++#define SYS_mq_notify 236
++#define SYS_mq_getsetattr 237
++#define SYS_available238 238
++#define SYS_io_setup 239
++#define SYS_io_destroy 240
++#define SYS_io_submit 241
++#define SYS_io_getevents 242
++#define SYS_io_cancel 243
++#define SYS_clock_settime 244
++#define SYS_clock_gettime 245
++#define SYS_clock_getres 246
++#define SYS_clock_nanosleep 247
++#define SYS_timer_create 248
++#define SYS_timer_delete 249
++#define SYS_timer_settime 250
++#define SYS_timer_gettime 251
++#define SYS_timer_getoverrun 252
++#define SYS_reserved253 253
++#define SYS_lookup_dcookie 254
++#define SYS_available255 255
++#define SYS_add_key 256
++#define SYS_request_key 257
++#define SYS_keyctl 258
++#define SYS_available259 259
++#define SYS_readahead 260
++#define SYS_remap_file_pages 261
++#define SYS_migrate_pages 262
++#define SYS_mbind 263
++#define SYS_get_mempolicy 264
++#define SYS_set_mempolicy 265
++#define SYS_unshare 266
++#define SYS_move_pages 267
++#define SYS_splice 268
++#define SYS_tee 269
++#define SYS_vmsplice 270
++#define SYS_available271 271
++#define SYS_pselect6 272
++#define SYS_ppoll 273
++#define SYS_epoll_pwait 274
++#define SYS_epoll_create1 275
++#define SYS_inotify_init 276
++#define SYS_inotify_add_watch 277
++#define SYS_inotify_rm_watch 278
++#define SYS_inotify_init1 279
++#define SYS_getcpu 280
++#define SYS_kexec_load 281
++#define SYS_ioprio_set 282
++#define SYS_ioprio_get 283
++#define SYS_set_robust_list 284
++#define SYS_get_robust_list 285
++#define SYS_available286 286
++#define SYS_available287 287
++#define SYS_openat 288
++#define SYS_mkdirat 289
++#define SYS_mknodat 290
++#define SYS_unlinkat 291
++#define SYS_renameat 292
++#define SYS_linkat 293
++#define SYS_symlinkat 294
++#define SYS_readlinkat 295
++#define SYS_utimensat 296
++#define SYS_fchownat 297
++#define SYS_futimesat 298
++#define SYS_fstatat64 299
++#define SYS_fchmodat 300
++#define SYS_faccessat 301
++#define SYS_available302 302
++#define SYS_available303 303
++#define SYS_signalfd 304
++#define SYS_eventfd 306
++#define SYS_recvmmsg 307
++#define SYS_setns 308
++#define SYS_signalfd4 309
++#define SYS_dup3 310
++#define SYS_pipe2 311
++#define SYS_timerfd_create 312
++#define SYS_timerfd_settime 313
++#define SYS_timerfd_gettime 314
++#define SYS_available315 315
++#define SYS_eventfd2 316
++#define SYS_preadv 317
++#define SYS_pwritev 318
++#define SYS_available319 319
++#define SYS_fanotify_init 320
++#define SYS_fanotify_mark 321
++#define SYS_process_vm_readv 322
++#define SYS_process_vm_writev 323
++#define SYS_name_to_handle_at 324
++#define SYS_open_by_handle_at 325
++#define SYS_sync_file_range2 326
++#define SYS_perf_event_open 327
++#define SYS_rt_tgsigqueueinfo 328
++#define SYS_clock_adjtime 329
++#define SYS_prlimit64 330
++#define SYS_kcmp 331
++#define SYS_finit_module 332
++#define SYS_accept4 333
++#define SYS_sched_setattr 334
++#define SYS_sched_getattr 335
++#define SYS_renameat2 336
++#define SYS_seccomp 337
++#define SYS_getrandom 338
++#define SYS_memfd_create 339
++#define SYS_bpf 340
++#define SYS_execveat 341
+diff --git a/arch/xtensa/bits/termios.h b/arch/xtensa/bits/termios.h
+new file mode 100644
+index 0000000..f1b32e0
+--- /dev/null
++++ b/arch/xtensa/bits/termios.h
+@@ -0,0 +1,168 @@
++struct termios
++{
++ tcflag_t c_iflag;
++ tcflag_t c_oflag;
++ tcflag_t c_cflag;
++ tcflag_t c_lflag;
++ cc_t c_line;
++ cc_t c_cc[NCCS];
++ speed_t __c_ispeed;
++ speed_t __c_ospeed;
++};
++
++#define VINTR 0
++#define VQUIT 1
++#define VERASE 2
++#define VKILL 3
++#define VEOF 4
++#define VTIME 5
++#define VMIN 6
++#define VSWTC 7
++#define VSTART 8
++#define VSTOP 9
++#define VSUSP 10
++#define VEOL 11
++#define VREPRINT 12
++#define VDISCARD 13
++#define VWERASE 14
++#define VLNEXT 15
++#define VEOL2 16
++
++#define IGNBRK 0000001
++#define BRKINT 0000002
++#define IGNPAR 0000004
++#define PARMRK 0000010
++#define INPCK 0000020
++#define ISTRIP 0000040
++#define INLCR 0000100
++#define IGNCR 0000200
++#define ICRNL 0000400
++#define IUCLC 0001000
++#define IXON 0002000
++#define IXANY 0004000
++#define IXOFF 0010000
++#define IMAXBEL 0020000
++#define IUTF8 0040000
++
++#define OPOST 0000001
++#define OLCUC 0000002
++#define ONLCR 0000004
++#define OCRNL 0000010
++#define ONOCR 0000020
++#define ONLRET 0000040
++#define OFILL 0000100
++#define OFDEL 0000200
++#define NLDLY 0000400
++#define NL0 0000000
++#define NL1 0000400
++#define CRDLY 0003000
++#define CR0 0000000
++#define CR1 0001000
++#define CR2 0002000
++#define CR3 0003000
++#define TABDLY 0014000
++#define TAB0 0000000
++#define TAB1 0004000
++#define TAB2 0010000
++#define TAB3 0014000
++#define XTABS 0014000
++#define BSDLY 0020000
++#define BS0 0000000
++#define BS1 0020000
++#define VTDLY 0040000
++#define VT0 0000000
++#define VT1 0040000
++#define FFDLY 0100000
++#define FF0 0000000
++#define FF1 0100000
++
++#define B0 0000000
++#define B50 0000001
++#define B75 0000002
++#define B110 0000003
++#define B134 0000004
++#define B150 0000005
++#define B200 0000006
++#define B300 0000007
++#define B600 0000010
++#define B1200 0000011
++#define B1800 0000012
++#define B2400 0000013
++#define B4800 0000014
++#define B9600 0000015
++#define B19200 0000016
++#define B38400 0000017
++#define EXTA 0000016
++#define EXTB 0000017
++
++#define BOTHER 0010000
++#define B57600 0010001
++#define B115200 0010002
++#define B230400 0010003
++#define B460800 0010004
++#define B500000 0010005
++#define B576000 0010006
++#define B921600 0010007
++#define B1000000 0010010
++#define B1152000 0010011
++#define B1500000 0010012
++#define B2000000 0010013
++#define B2500000 0010014
++#define B3000000 0010015
++#define B3500000 0010016
++#define B4000000 0010017
++
++#define CBAUD 0010017
++
++#define CSIZE 0000060
++#define CS5 0000000
++#define CS6 0000020
++#define CS7 0000040
++#define CS8 0000060
++#define CSTOPB 0000100
++#define CREAD 0000200
++#define PARENB 0000400
++#define PARODD 0001000
++#define HUPCL 0002000
++#define CLOCAL 0004000
++
++#define ISIG 0000001
++#define ICANON 0000002
++#define XCASE 0000004
++#define ECHO 0000010
++#define ECHOE 0000020
++#define ECHOK 0000040
++#define ECHONL 0000100
++#define NOFLSH 0000200
++#define TOSTOP 0000400
++#define ECHOCTL 0001000
++#define ECHOPRT 0002000
++#define ECHOKE 0004000
++#define FLUSHO 0010000
++#define PENDIN 0040000
++#define IEXTEN 0100000
++#define EXTPROC 0200000
++
++#define TCOOFF 0
++#define TCOON 1
++#define TCIOFF 2
++#define TCION 3
++
++#define TCIFLUSH 0
++#define TCOFLUSH 1
++#define TCIOFLUSH 2
++
++#define TCSANOW 0
++#define TCSADRAIN 1
++#define TCSAFLUSH 2
++
++#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
++#define CBAUDEX 0010000
++#define CIBAUD 002003600000
++#define IBSHIFT 16
++#define CMSPAR 010000000000
++#define CRTSCTS 020000000000
++#define EXTPROC 0200000
++#define XTABS 0014000
++#define TIOCSER_TEMT 1
++#endif
+diff --git a/arch/xtensa/bits/user.h b/arch/xtensa/bits/user.h
+new file mode 100644
+index 0000000..8ac7526
+--- /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/bits/xtensa-config.h b/arch/xtensa/bits/xtensa-config.h
+new file mode 100644
+index 0000000..2e60af9
+--- /dev/null
++++ b/arch/xtensa/bits/xtensa-config.h
+@@ -0,0 +1,46 @@
++/* Xtensa configuration settings.
++ Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
++ Free Software Foundation, Inc.
++ Contributed by Bob Wilson (bwilson@tensilica.com) at Tensilica.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#ifndef XTENSA_CONFIG_H
++#define XTENSA_CONFIG_H
++
++/* The macros defined here match those with the same names in the Xtensa
++ compile-time HAL (Hardware Abstraction Layer). Please refer to the
++ Xtensa System Software Reference Manual for documentation of these
++ macros. */
++
++/* The following macros reflect the default expectations for Xtensa
++ processor configurations that can run glibc. If you want to try
++ building glibc for an Xtensa configuration that is missing these
++ options, you will at least need to change the values of these
++ macros. */
++
++#undef XCHAL_HAVE_NSA
++#define XCHAL_HAVE_NSA 1
++
++#undef XCHAL_HAVE_LOOPS
++#define XCHAL_HAVE_LOOPS 1
++
++/* Assume the maximum number of AR registers. This currently only affects
++ the __window_spill function, and it is always safe to flush extra. */
++
++#undef XCHAL_NUM_AREGS
++#define XCHAL_NUM_AREGS 64
++
++#endif /* !XTENSA_CONFIG_H */
+diff --git a/arch/xtensa/crt_arch.h b/arch/xtensa/crt_arch.h
+new file mode 100644
+index 0000000..dc6ddaa
+--- /dev/null
++++ b/arch/xtensa/crt_arch.h
+@@ -0,0 +1,26 @@
++__asm__(
++".begin no-transform\n"
++".text \n"
++".global _" START "\n"
++".global " START "\n"
++".type _" START ", @function\n"
++".type " START ", @function\n"
++"_" START ":\n"
++"" START ":\n"
++" call0 2f\n"
++"1:\n"
++".align 4\n"
++".weak _DYNAMIC\n"
++".hidden _DYNAMIC\n"
++" .literal .L0, _DYNAMIC\n"
++" .literal .L1, 1b\n"
++"2:\n"
++" mov a6, a1\n"
++" l32r a7, .L0\n"
++" l32r a5, .L1\n"
++" add a7, a7, a0\n"
++" sub a7, a7, a5\n"
++" movi a0, 0\n"
++" call4 " START "_c\n"
++".end no-transform\n"
++);
+diff --git a/arch/xtensa/pthread_arch.h b/arch/xtensa/pthread_arch.h
+new file mode 100644
+index 0000000..35c752e
+--- /dev/null
++++ b/arch/xtensa/pthread_arch.h
+@@ -0,0 +1,11 @@
++static inline struct pthread *__pthread_self()
++{
++ register char *tp;
++ __asm__ __volatile__ ("rur %0, threadptr" : "=r" (tp));
++ return (pthread_t)(tp + 8 - sizeof(struct pthread));
++}
++
++#define TLS_ABOVE_TP
++#define TP_ADJ(p) ((char *)(p) + sizeof(struct pthread) - 8)
++
++#define MC_PC sc_pc
+diff --git a/arch/xtensa/reloc.h b/arch/xtensa/reloc.h
+new file mode 100644
+index 0000000..bae93a5
+--- /dev/null
++++ b/arch/xtensa/reloc.h
+@@ -0,0 +1,21 @@
++#include <endian.h>
++
++#if __BYTE_ORDER == __BIG_ENDIAN
++#define ENDIAN_SUFFIX "eb"
++#else
++#define ENDIAN_SUFFIX ""
++#endif
++
++#define LDSO_ARCH "xtensa" ENDIAN_SUFFIX
++
++#define TPOFF_K 8
++
++#define REL_PLT R_XTENSA_JMP_SLOT
++#define REL_RELATIVE R_XTENSA_RELATIVE
++#define REL_GOT R_XTENSA_GLOB_DAT
++#define REL_COPY R_XTENSA_32
++#define REL_TPOFF R_XTENSA_TLS_TPOFF
++//#define REL_TLSDESC R_XTENSA_TLSDESC_FN
++
++#define CRTJMP(pc,sp) __asm__ __volatile__( \
++ "movsp a1, %1 ; jx %0" : : "a"(pc), "a"(sp) : "memory" )
+diff --git a/arch/xtensa/syscall_arch.h b/arch/xtensa/syscall_arch.h
+new file mode 100644
+index 0000000..380ce17
+--- /dev/null
++++ b/arch/xtensa/syscall_arch.h
+@@ -0,0 +1,102 @@
++#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;
++}
+diff --git a/configure b/configure
+index 0955ce6..2c56cab 100755
+--- a/configure
++++ b/configure
+@@ -312,6 +312,7 @@ microblaze*) ARCH=microblaze ;;
+ or1k*) ARCH=or1k ;;
+ powerpc*) ARCH=powerpc ;;
+ sh[1-9bel-]*|sh|superh*) ARCH=sh ;;
++xtensa*) ARCH=xtensa ;;
+ unknown) fail "$0: unable to detect target arch; try $0 --target=..." ;;
+ *) fail "$0: unknown or unsupported target \"$target\"" ;;
+ esac
+diff --git a/crt/xtensa/crti.s b/crt/xtensa/crti.s
+new file mode 100644
+index 0000000..6565656
+--- /dev/null
++++ b/crt/xtensa/crti.s
+@@ -0,0 +1,11 @@
++.section .init
++.global _init
++.type _init, @function
++_init:
++ entry a1, 32
++
++.section .fini
++.global _fini
++.type _fini, @function
++_fini:
++ entry a1, 32
+diff --git a/crt/xtensa/crtn.s b/crt/xtensa/crtn.s
+new file mode 100644
+index 0000000..7e9a014
+--- /dev/null
++++ b/crt/xtensa/crtn.s
+@@ -0,0 +1,5 @@
++.section .init
++ retw
++
++.section .fini
++ retw
+diff --git a/include/elf.h b/include/elf.h
+index 8b3cd3e..8168cf1 100644
+--- a/include/elf.h
++++ b/include/elf.h
+@@ -2819,6 +2819,64 @@ typedef Elf32_Addr Elf32_Conflict;
+ #define R_OR1K_TLS_DTPOFF 33
+ #define R_OR1K_TLS_DTPMOD 34
+
++
++#define DT_XTENSA_GOT_LOC_OFF (DT_LOPROC + 0)
++#define DT_XTENSA_GOT_LOC_SZ (DT_LOPROC + 1)
++#define DT_XTENSA_NUM 2
++
++#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_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_TPOFF 53
++
++#define R_XTENSA_NUM 54
++
+ #ifdef __cplusplus
+ }
+ #endif
+diff --git a/ldso/dlstart.c b/ldso/dlstart.c
+index 4dbe178..0249937 100644
+--- a/ldso/dlstart.c
++++ b/ldso/dlstart.c
+@@ -22,6 +22,7 @@ void _dlstart_c(size_t *sp, size_t *dynv)
+ {
+ size_t i, aux[AUX_CNT], dyn[DYN_CNT];
+ size_t *rel, rel_size, base;
++ unsigned long addr = 1;
+
+ int argc = *sp;
+ char **argv = (void *)(sp+1);
+@@ -138,7 +139,17 @@ void _dlstart_c(size_t *sp, size_t *dynv)
+ for (; rel_size; rel+=3, rel_size-=3*sizeof(size_t)) {
+ if (!IS_RELATIVE(rel[1], 0)) continue;
+ size_t *rel_addr = (void *)(base + rel[0]);
+- *rel_addr = base + rel[2];
++ if (((unsigned long)rel_addr & -4096) != addr) {
++ addr = (unsigned long)rel_addr & -4096;
++ __asm__ __volatile__ ("movi a2, 82\n\t"
++ "mov a6, %0\n\t"
++ "mov a3, %1\n\t"
++ "mov a4, %2\n\t"
++ "syscall"
++ :: "a"(addr), "a"(4096), "a"(7)
++ : "a2", "a3", "a4", "a6", "memory");
++ }
++ *rel_addr += base + rel[2];
+ }
+ #endif
+
+diff --git a/ldso/dynlink.c b/ldso/dynlink.c
+index 87f3b7f..1927097 100644
+--- a/ldso/dynlink.c
++++ b/ldso/dynlink.c
+@@ -314,6 +314,7 @@ static void do_relocs(struct dso *dso, size_t *rel, size_t rel_size, size_t stri
+ size_t tls_val;
+ size_t addend;
+ int skip_relative = 0, reuse_addends = 0, save_slot = 0;
++ unsigned long addr = 1;
+
+ if (dso == &ldso) {
+ /* Only ldso's REL table needs addend saving/reuse. */
+@@ -328,6 +329,10 @@ static void do_relocs(struct dso *dso, size_t *rel, size_t rel_size, size_t stri
+ if (type == REL_NONE) continue;
+ sym_index = R_SYM(rel[1]);
+ reloc_addr = laddr(dso, rel[0]);
++ if (((unsigned long)reloc_addr & -4096) != addr) {
++ addr = (unsigned long)reloc_addr & -4096;
++ mprotect((void *)addr, 4096, 7);
++ }
+ if (sym_index) {
+ sym = syms + sym_index;
+ name = strings + sym->st_name;
+@@ -377,7 +382,7 @@ static void do_relocs(struct dso *dso, size_t *rel, size_t rel_size, size_t stri
+ *reloc_addr = sym_val + addend;
+ break;
+ case REL_RELATIVE:
+- *reloc_addr = (size_t)base + addend;
++ *reloc_addr += (size_t)base + addend;
+ break;
+ case REL_SYM_OR_REL:
+ if (sym) *reloc_addr = sym_val + addend;
+@@ -444,6 +449,40 @@ static void do_relocs(struct dso *dso, size_t *rel, size_t rel_size, size_t stri
+ #endif
+ }
+ break;
++ case R_XTENSA_RTLD:
++ break;
++ case R_XTENSA_TLSDESC_FN:
++ if (runtime && def.dso->tls_id >= static_tls_cnt) {
++ reloc_addr[0] = (size_t)__tlsdesc_dynamic;
++ } else {
++ reloc_addr[0] = (size_t)__tlsdesc_static;
++ }
++ break;
++ case R_XTENSA_TLSDESC_ARG:
++ if (stride<3) addend = reloc_addr[1];
++ if (runtime && def.dso->tls_id >= static_tls_cnt) {
++ struct td_index *new = malloc(sizeof *new);
++ if (!new) {
++ error(
++ "Error relocating %s: cannot allocate TLSDESC for %s",
++ dso->name, sym ? name : "(local)" );
++ longjmp(*rtld_fail, 1);
++ }
++ new->next = dso->td_index;
++ dso->td_index = new;
++ new->args[0] = def.dso->tls_id;
++ new->args[1] = tls_val + addend;
++ reloc_addr[0] = (size_t)new;
++ } else {
++#ifdef TLS_ABOVE_TP
++ reloc_addr[0] = tls_val + def.dso->tls.offset
++ + TPOFF_K + addend;
++#else
++ reloc_addr[0] = tls_val - def.dso->tls.offset
++ + addend;
++#endif
++ }
++ break;
+ default:
+ error("Error relocating %s: unsupported relocation type %d",
+ dso->name, type);
+diff --git a/src/internal/xtensa/syscall.s b/src/internal/xtensa/syscall.s
+new file mode 100644
+index 0000000..6dc584b
+--- /dev/null
++++ b/src/internal/xtensa/syscall.s
+@@ -0,0 +1,15 @@
++.global __syscall
++.hidden __syscall
++.type __syscall,@function
++.align 4
++__syscall:
++ entry a1, 16
++ mov a8, a3
++ mov a3, a4
++ mov a4, a5
++ mov a5, a6
++ mov a6, a8
++ mov a8, a7
++ l32i a9, a1, 16
++ syscall
++ retw
+diff --git a/src/ldso/xtensa/tlsdesc.s b/src/ldso/xtensa/tlsdesc.s
+new file mode 100644
+index 0000000..5fa846d
+--- /dev/null
++++ b/src/ldso/xtensa/tlsdesc.s
+@@ -0,0 +1,22 @@
++.global __tlsdesc_static
++.hidden __tlsdesc_static
++.type __tlsdesc_static,@function
++.align 4
++__tlsdesc_static:
++ entry a1, 16
++ rur a3, threadptr
++ add a2, a2, a3
++ retw
++
++.hidden __tls_get_new
++
++.global __tlsdesc_dynamic
++.hidden __tlsdesc_dynamic
++.type __tlsdesc_dynamic,@function
++.align 4
++__tlsdesc_dynamic:
++ entry a1, 16
++ mov a6, a2
++ call4 __tls_get_addr
++ mov a2, a6
++ retw
+diff --git a/src/setjmp/xtensa/longjmp.s b/src/setjmp/xtensa/longjmp.s
+new file mode 100644
+index 0000000..0b49188
+--- /dev/null
++++ b/src/setjmp/xtensa/longjmp.s
+@@ -0,0 +1,73 @@
++.global _longjmp
++.global longjmp
++.type _longjmp,%function
++.type longjmp,%function
++.align 4
++_longjmp:
++longjmp:
++ entry a1, 16
++
++ /* Invalidate all but the current register window. */
++ call4 __window_spill
++
++ l32i a0, a2, 64
++ addi a7, a1, -16
++ l32i a4, a2, 0
++ l32i a5, a2, 4
++ s32i a4, a7, 0
++ s32i a5, a7, 4
++ l32i a4, a2, 8
++ l32i a5, a2, 12
++ s32i a4, a7, 8
++ s32i a5, a7, 12
++
++ /* Copy the remaining 0-8 saved registers. */
++ extui a7, a0, 30, 2
++ blti a7, 2, 2f
++ l32i a8, a2, 52 /* a8: SP of 'caller-1' */
++ slli a4, a7, 4
++ sub a6, a8, a4
++ addi a5, a2, 16
++ addi a8, a8, -16 /* a8: end of overflow area */
++1:
++ l32i a7, a5, 0
++ l32i a4, a5, 4
++ s32i a7, a6, 0
++ s32i a4, a6, 4
++ l32i a7, a5, 8
++ l32i a4, a5, 12
++ s32i a7, a6, 8
++ s32i a4, a6, 12
++ addi a5, a5, 16
++ addi a6, a6, 16
++ bltu a6, a8, 1b
++2:
++ /* The 4 words saved from the register save area at the target's
++ * sp are copied back to the target procedure's save area. The
++ * only point of this is to prevent a catastrophic failure in
++ * case the contents were moved by an alloca after calling
++ * setjmp. This is a bit paranoid but it doesn't cost much.
++ */
++
++ l32i a7, a2, 4 /* load the target stack pointer */
++ addi a7, a7, -16 /* find the destination save area */
++ l32i a4, a2, 48
++ l32i a5, a2, 52
++ s32i a4, a7, 0
++ s32i a5, a7, 4
++ l32i a4, a2, 56
++ l32i a5, a2, 60
++ s32i a4, a7, 8
++ s32i a5, a7, 12
++
++ l32i a4, a2, 68
++ beqz a4, 1f
++
++ mov a6, a2
++ movi a7, 1
++.hidden __sigsetjmp_tail
++ call4 __sigsetjmp_tail
++1:
++ movi a2, 1
++ movnez a2, a3, a3
++ retw
+diff --git a/src/setjmp/xtensa/setjmp.s b/src/setjmp/xtensa/setjmp.s
+new file mode 100644
+index 0000000..1366af0
+--- /dev/null
++++ b/src/setjmp/xtensa/setjmp.s
+@@ -0,0 +1,13 @@
++.global __setjmp
++.global _setjmp
++.global setjmp
++.type __setjmp,@function
++.type _setjmp,@function
++.type setjmp,@function
++.align 4
++__setjmp:
++_setjmp:
++setjmp:
++ entry a1, 16
++ movi a3, 0
++ j ___sigsetjmp
+diff --git a/src/signal/xtensa/restore.s b/src/signal/xtensa/restore.s
+new file mode 100644
+index 0000000..a0c5229
+--- /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 0000000..825e182
+--- /dev/null
++++ b/src/signal/xtensa/sigsetjmp.s
+@@ -0,0 +1,69 @@
++.global sigsetjmp
++.global __sigsetjmp
++.global ___sigsetjmp
++.type sigsetjmp,%function
++.type __sigsetjmp,%function
++.type ___sigsetjmp,%function
++.align 4
++sigsetjmp:
++__sigsetjmp:
++ entry a1, 16
++
++___sigsetjmp:
++ call4 __window_spill
++
++ /* Copy the caller registers a0 - a3 at (sp - 16) to jmpbuf. */
++ addi a7, a1, -16
++ l32i a4, a7, 0
++ l32i a5, a7, 4
++ s32i a4, a2, 0
++ s32i a5, a2, 4
++ l32i a4, a7, 8
++ l32i a5, a7, 12
++ s32i a4, a2, 8
++ s32i a5, a2, 12
++
++ /* Copy the caller registers a4-a8/a12 from the overflow area. */
++ /* Entry moved the SP by 16 bytes, so SP of caller-1 is at (sp + 4). */
++ extui a7, a0, 30, 2
++ blti a7, 2, 2f
++ l32i a8, a1, 4 /* a8: SP of 'caller-1' */
++ slli a4, a7, 4
++ sub a6, a8, a4
++ addi a5, a2, 16
++ addi a8, a8, -16 /* a8: end of overflow area */
++1:
++ l32i a7, a6, 0
++ l32i a4, a6, 4
++ s32i a7, a5, 0
++ s32i a4, a5, 4
++ l32i a7, a6, 8
++ l32i a4, a6, 12
++ s32i a7, a5, 8
++ s32i a4, a5, 12
++ addi a5, a5, 16
++ addi a6, a6, 16
++ bltu a6, a8, 1b
++2:
++ /* Copy caller-1 registers a0 - a3 (this is assuming entry a1, 16) */
++ l32i a4, a1, 0
++ l32i a5, a1, 4
++ s32i a4, a2, 48
++ s32i a5, a2, 52
++ l32i a4, a1, 8
++ l32i a5, a1, 12
++ s32i a4, a2, 56
++ s32i a5, a2, 60
++
++ /* Save the return address, including the window size bits. */
++ s32i a0, a2, 64
++ s32i a3, a2, 68
++ beqz a3, 1f
++
++ mov a6, a2
++ movi a7, 0
++.hidden __sigsetjmp_tail
++ call4 __sigsetjmp_tail
++1:
++ movi a2, 0
++ retw
+diff --git a/src/signal/xtensa/windowspill.s b/src/signal/xtensa/windowspill.s
+new file mode 100644
+index 0000000..7ab7f3d
+--- /dev/null
++++ b/src/signal/xtensa/windowspill.s
+@@ -0,0 +1,78 @@
++#include <bits/xtensa-config.h>
++
++#ifdef __XTENSA_WINDOWED_ABI__
++.global __window_spill
++.type __window_spill, @function
++.align 4
++__window_spill:
++ entry a1, 48
++ bbci.l a0, 31, .L4 /* branch if called with call4 */
++ bbsi.l a0, 30, .L12 /* branch if called with call12 */
++
++ /* Called with call8: touch register NUM_REGS-12 (4/20/52) */
++.L8:
++#if XCHAL_NUM_AREGS > 16
++ call12 1f
++ retw
++
++ .align 4
++1: _entry a1, 48 /* touch NUM_REGS-24 (x/8/40) */
++
++#if XCHAL_NUM_AREGS == 32
++ mov a8, a0
++ retw
++#else
++ mov a12, a0
++ _entry a1, 48 /* touch NUM_REGS-36 (x/x/28) */
++ mov a12, a0
++ _entry a1, 48 /* touch NUM_REGS-48 (x/x/16) */
++ mov a12, a0
++ _entry a1, 16 /* touch NUM_REGS-60 (x/x/4) */
++#endif
++#endif
++ mov a4, a0
++ retw
++
++ /* Called with call4: touch register NUM_REGS-8 (8/24/56) */
++.L4:
++#if XCHAL_NUM_AREGS == 16
++ mov a8, a0
++#else
++ call12 1f
++ retw
++
++ .align 4
++1: _entry a1, 48 /* touch NUM_REGS-20 (x/12/44) */
++ mov a12, a0
++#if XCHAL_NUM_AREGS > 32
++ _entry a1, 48 /* touch NUM_REGS-32 (x/x/32) */
++ mov a12, a0
++ _entry a1, 48 /* touch NUM_REGS-44 (x/x/20) */
++ mov a12, a0
++ _entry a1, 48 /* touch NUM_REGS-56 (x/x/8) */
++ mov a8, a0
++#endif
++#endif
++ retw
++
++ /* Called with call12: touch register NUM_REGS-16 (x/16/48) */
++.L12:
++#if XCHAL_NUM_AREGS > 16
++ call12 1f
++ retw
++
++ .align 4
++1: _entry a1, 48 /* touch NUM_REGS-28 (x/4/36) */
++#if XCHAL_NUM_AREGS == 32
++ mov a4, a0
++#else
++ mov a12, a0
++ _entry a1, 48 /* touch NUM_REGS-40 (x/x/24) */
++ mov a12, a0
++ _entry a1, 48 /* touch NUM_REGS-52 (x/x/12) */
++ mov a12, a0
++#endif
++#endif
++ retw
++
++#endif
+diff --git a/src/thread/xtensa/__set_thread_area.s b/src/thread/xtensa/__set_thread_area.s
+new file mode 100644
+index 0000000..4fe97ac
+--- /dev/null
++++ b/src/thread/xtensa/__set_thread_area.s
+@@ -0,0 +1,8 @@
++.global __set_thread_area
++.type __set_thread_area,@function
++.align 4
++__set_thread_area:
++ entry a1, 16
++ wur a2, threadptr
++ movi a2, 0
++ retw
+diff --git a/src/thread/xtensa/__unmapself.s b/src/thread/xtensa/__unmapself.s
+new file mode 100644
+index 0000000..c5d8f54
+--- /dev/null
++++ b/src/thread/xtensa/__unmapself.s
+@@ -0,0 +1,10 @@
++.global __unmapself
++.type __unmapself,%function
++.align 4
++__unmapself:
++ entry a1, 16
++ 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 0000000..c75db81
+--- /dev/null
++++ b/src/thread/xtensa/clone.s
+@@ -0,0 +1,39 @@
++// __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:
++ entry a1, 16
++ // 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, 16
++ movi a2, 116 # SYS_clone
++ syscall
++
++ beqz a2, 1f
++ // parent
++ retw
++
++ // child
++1:
++ movi a0, 0
++ l32i a4, a1, 0
++ l32i a6, a1, 4
++ callx4 a4
++ 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 0000000..f68df8d
+--- /dev/null
++++ b/src/thread/xtensa/syscall_cp.s
+@@ -0,0 +1,37 @@
++// __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:
++ entry a1, 16
++__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, 16
++ l32i a9, a1, 20
++ syscall
++__cp_end:
++ retw
++__cp_cancel:
++ call4 __cancel
++ mov a2, a6
++ retw
+--
+2.1.4
+