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Message-Id: <20240328200319.4016902-1-jcmvbkbc@gmail.com>
Date: Thu, 28 Mar 2024 13:03:17 -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 v2 0/2] xtensa FDPIC port
Hello,
this is the second RFC version of the xtensa FDPIC port for musl.
There are two patches: the first adds the port and will likely not
change in the future versions. The second adds two bits of
xtensa-specific GOT initialization for compatibility with the current
binutils/gcc and will go away once binutils and gcc are changed to do
local references differently.
The following binutils and gcc branches can be used to build the
xtensa-linux-muslfdpic toolchain:
https://github.com/jcmvbkbc/binutils-gdb-xtensa xtensa-2.42-fdpic-musl
https://github.com/jcmvbkbc/gcc-xtensa xtensa-14-9655-fdpic-musl
I've tested this version with libc-test using QEMU linux-user and full
system emulation. The results in the linux-user are the following:
FAIL src/functional/dlopen.exe [status 1]
FAIL src/functional/pthread_robust-static.exe [timed out]
FAIL src/functional/pthread_robust.exe [timed out]
FAIL src/functional/strptime-static.exe [status 1]
FAIL src/functional/strptime.exe [status 1]
FAIL src/math/acoshl.exe [status 1]
FAIL src/math/asinhl.exe [status 1]
FAIL src/math/erfcl.exe [status 1]
FAIL src/math/fma.exe [status 1]
FAIL src/math/fmal.exe [status 1]
FAIL src/math/lgammal.exe [status 1]
FAIL src/math/tgammal.exe [status 1]
FAIL src/regression/pthread-robust-detach-static.exe [status 1]
FAIL src/regression/pthread-robust-detach.exe [status 1]
functional/dlopen fails with the
src/functional/dlopen.c:39: dlsym main failed: (null)
There's no failure in the dlsym call, but the pointers don't match.
functional/ and regression/ pthread-related failures are expected
because the robust list functions are not available in the linux-user
mode. These particular tests pass in full system emulation.
math tests fail with ULP differences.
I have also added the following changes to the abi tests to fix the
build:
diff --git a/src/api/sys_sem.c b/src/api/sys_sem.c
index a473cad0a2aa..bd4df9a4fe70 100644
--- a/src/api/sys_sem.c
+++ b/src/api/sys_sem.c
@@ -18,7 +18,11 @@ C(SETALL)
{
struct semid_ds x;
F(struct ipc_perm,sem_perm)
+#ifdef __xtensa__
+F(unsigned long, sem_nsems)
+#else
F(unsigned short, sem_nsems)
+#endif
F(time_t, sem_otime)
F(time_t, sem_ctime)
}
diff --git a/src/api/unistd.c b/src/api/unistd.c
index 522ccdc737cf..f0646ca909c7 100644
--- a/src/api/unistd.c
+++ b/src/api/unistd.c
@@ -114,7 +114,7 @@ C(_PC_REC_MIN_XFER_SIZE)
C(_PC_REC_XFER_ALIGN)
C(_PC_SYMLINK_MAX)
C(_PC_SYNC_IO)
-C(_PC_TIMESTAMP_RESOLUTION)
+//C(_PC_TIMESTAMP_RESOLUTION)
C(_PC_VDISABLE)
C(_SC_2_C_BIND)
C(_SC_2_C_DEV)
@@ -235,7 +235,7 @@ C(_SC_XOPEN_REALTIME_THREADS)
C(_SC_XOPEN_SHM)
C(_SC_XOPEN_STREAMS)
C(_SC_XOPEN_UNIX)
-C(_SC_XOPEN_UUCP)
+//C(_SC_XOPEN_UUCP)
C(_SC_XOPEN_VERSION)
C(STDERR_FILENO)
C(STDIN_FILENO)
---
Max Filippov (2):
xtensa: add port
WIP xtensa bits
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 | 19 ++
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 | 48 +++
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 | 21 ++
crt/xtensa/crtn.S | 15 +
include/elf.h | 74 +++++
ldso/dlstart.c | 3 +
ldso/dynlink.c | 8 +-
src/internal/xtensa/syscall.s | 14 +
src/ldso/xtensa/dlsym.s | 6 +
src/ldso/xtensa/dlsym_time64.S | 3 +
src/ldso/xtensa/tlsdesc.s | 25 ++
src/process/xtensa/vfork.s | 13 +
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 +++
44 files changed, 1506 insertions(+), 1 deletion(-)
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
--
2.39.2
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