summaryrefslogtreecommitdiff
path: root/libpthread/nptl/sysdeps/csky
diff options
context:
space:
mode:
Diffstat (limited to 'libpthread/nptl/sysdeps/csky')
-rw-r--r--libpthread/nptl/sysdeps/csky/Makefile6
-rw-r--r--libpthread/nptl/sysdeps/csky/Makefile.arch7
-rw-r--r--libpthread/nptl/sysdeps/csky/dl-tls.h9
-rw-r--r--libpthread/nptl/sysdeps/csky/libc-tls.c18
-rw-r--r--libpthread/nptl/sysdeps/csky/pthread_spin_lock.S18
-rw-r--r--libpthread/nptl/sysdeps/csky/pthread_spin_trylock.S16
-rw-r--r--libpthread/nptl/sysdeps/csky/pthreaddef.h19
-rw-r--r--libpthread/nptl/sysdeps/csky/tcb-offsets.sym10
-rw-r--r--libpthread/nptl/sysdeps/csky/tls.h170
9 files changed, 273 insertions, 0 deletions
diff --git a/libpthread/nptl/sysdeps/csky/Makefile b/libpthread/nptl/sysdeps/csky/Makefile
new file mode 100644
index 000000000..43dc60a42
--- /dev/null
+++ b/libpthread/nptl/sysdeps/csky/Makefile
@@ -0,0 +1,6 @@
+top_srcdir=../../../../
+top_builddir=../../../../
+all: objs
+include $(top_builddir)Rules.mak
+include Makefile.arch
+include $(top_srcdir)Makerules
diff --git a/libpthread/nptl/sysdeps/csky/Makefile.arch b/libpthread/nptl/sysdeps/csky/Makefile.arch
new file mode 100644
index 000000000..0e0a5e6d4
--- /dev/null
+++ b/libpthread/nptl/sysdeps/csky/Makefile.arch
@@ -0,0 +1,7 @@
+CFLAGS-pt-raise.c = -DNOT_IN_libc -DIS_IN_libpthread
+
+ASFLAGS-pthread_spin_lock.S = -DNOT_IN_libc -DIS_IN_libpthread
+ASFLAGS-pthread_spin_trylock.S = -DNOT_IN_libc -DIS_IN_libpthread
+
+libc_arch_a_CSRC = libc-tls.c
+
diff --git a/libpthread/nptl/sysdeps/csky/dl-tls.h b/libpthread/nptl/sysdeps/csky/dl-tls.h
new file mode 100644
index 000000000..70f7e9681
--- /dev/null
+++ b/libpthread/nptl/sysdeps/csky/dl-tls.h
@@ -0,0 +1,9 @@
+/* Type used for the representation of TLS information in the GOT. */
+typedef struct
+{
+ unsigned long int ti_module;
+ unsigned long int ti_offset;
+} tls_index;
+
+extern void *__tls_get_addr (tls_index *ti);
+
diff --git a/libpthread/nptl/sysdeps/csky/libc-tls.c b/libpthread/nptl/sysdeps/csky/libc-tls.c
new file mode 100644
index 000000000..ceb61f848
--- /dev/null
+++ b/libpthread/nptl/sysdeps/csky/libc-tls.c
@@ -0,0 +1,18 @@
+#include <sysdeps/generic/libc-tls.c>
+#include <dl-tls.h>
+
+#if defined(USE_TLS) && USE_TLS
+
+/* On CSKY, linker optimizations are not required, so __tls_get_addr
+ can be called even in statically linked binaries. In this case module
+ must be always 1 and PT_TLS segment exist in the binary, otherwise it
+ would not link. */
+
+void *
+__tls_get_addr (tls_index *ti)
+{
+ dtv_t *dtv = THREAD_DTV ();
+ return (char *) dtv[1].pointer.val + ti->ti_offset;
+}
+
+#endif
diff --git a/libpthread/nptl/sysdeps/csky/pthread_spin_lock.S b/libpthread/nptl/sysdeps/csky/pthread_spin_lock.S
new file mode 100644
index 000000000..da6e234eb
--- /dev/null
+++ b/libpthread/nptl/sysdeps/csky/pthread_spin_lock.S
@@ -0,0 +1,18 @@
+#include <sysdep.h>
+
+ .text
+ .align 4
+
+ENTRY (pthread_spin_lock)
+ mov a2, a0
+1:
+ movi a0, 0
+ movi a1, 1
+ trap 2 // trap 2 use to cmpxchg
+ cmpnei a0, 0
+ bt 1b
+ movi a0, 0
+ jmp r15
+
+ /* TODO */
+END (pthread_spin_lock)
diff --git a/libpthread/nptl/sysdeps/csky/pthread_spin_trylock.S b/libpthread/nptl/sysdeps/csky/pthread_spin_trylock.S
new file mode 100644
index 000000000..113e94d51
--- /dev/null
+++ b/libpthread/nptl/sysdeps/csky/pthread_spin_trylock.S
@@ -0,0 +1,16 @@
+#define _ERRNO_H 1
+#include <bits/errno.h>
+#include <sysdep.h>
+
+.text
+ENTRY (pthread_spin_trylock)
+ mov a2, a0
+ movi a0, 0
+ movi a1, 1
+ trap 2 // trap 2 use to cmpxchg
+ cmpnei a0, 0
+ bf 1f
+ movi a0, EBUSY
+1:
+ jmp r15
+END (pthread_spin_trylock)
diff --git a/libpthread/nptl/sysdeps/csky/pthreaddef.h b/libpthread/nptl/sysdeps/csky/pthreaddef.h
new file mode 100644
index 000000000..da6a0fac8
--- /dev/null
+++ b/libpthread/nptl/sysdeps/csky/pthreaddef.h
@@ -0,0 +1,19 @@
+/* Default stack size. */
+#define ARCH_STACK_DEFAULT_SIZE (2 * 1024 * 1024)
+
+/* Required stack pointer alignment at beginning. SSE requires 16
+ bytes. */
+#define STACK_ALIGN 16
+
+/* Minimal stack size after allocating thread descriptor and guard size. */
+#define MINIMAL_REST_STACK 2048
+
+/* Alignment requirement for TCB. */
+#define TCB_ALIGNMENT 16
+
+/* Location of current stack frame. */
+#define CURRENT_STACK_FRAME __builtin_frame_address (0)
+
+/* XXX Until we have a better place keep the definitions here. */
+#define __exit_thread_inline(val) \
+ INLINE_SYSCALL (exit, 1, (val))
diff --git a/libpthread/nptl/sysdeps/csky/tcb-offsets.sym b/libpthread/nptl/sysdeps/csky/tcb-offsets.sym
new file mode 100644
index 000000000..bf9c0a1c1
--- /dev/null
+++ b/libpthread/nptl/sysdeps/csky/tcb-offsets.sym
@@ -0,0 +1,10 @@
+#include <sysdep.h>
+#include <tls.h>
+
+--
+
+-- Derive offsets relative to the thread register.
+#define thread_offsetof(mem) (long)(offsetof(struct pthread, mem) - sizeof(struct pthread))
+
+MULTIPLE_THREADS_OFFSET thread_offsetof (header.multiple_threads)
+TID_OFFSET thread_offsetof (tid)
diff --git a/libpthread/nptl/sysdeps/csky/tls.h b/libpthread/nptl/sysdeps/csky/tls.h
new file mode 100644
index 000000000..721551c8d
--- /dev/null
+++ b/libpthread/nptl/sysdeps/csky/tls.h
@@ -0,0 +1,170 @@
+#ifndef _TLS_H
+#define _TLS_H 1
+
+#ifndef __ASSEMBLER__
+
+# include <stdbool.h>
+# include <stddef.h>
+# include <stdint.h>
+
+/* Type for the dtv. */
+typedef union dtv
+{
+ size_t counter;
+ struct
+ {
+ void *val;
+ bool is_static;
+ } pointer;
+} dtv_t;
+
+#ifdef __CSKYABIV2__
+/* define r31 as thread pointer register? */
+# define READ_THREAD_POINTER() \
+ ({ void *__result; \
+ __asm__ __volatile__ ("mov %0, r31" \
+ : "=r" (__result)); \
+ __result; })
+#else
+# define READ_THREAD_POINTER() \
+ ({ register unsigned int __result __asm__("a0"); \
+ __asm__ __volatile__ ("trap 3;" \
+ : "=r" (__result) : : ); \
+ __result; })
+#endif
+
+#else /* __ASSEMBLER__ */
+# include <tcb-offsets.h>
+# ifdef __CSKYABIV2__
+/* define r31 as thread pointer register? */
+# define READ_THREAD_POINTER() \
+ mov r0, r31;
+# else
+# define READ_THREAD_POINTER() \
+ trap 3;
+# endif
+#endif /* __ASSEMBLER__ */
+
+/* We require TLS support in the tools. */
+#define HAVE_TLS_SUPPORT 1
+#define HAVE_TLS_MODEL_ATTRIBUTE 1
+#define HAVE___THREAD 1
+
+/* Signal that TLS support is available. */
+#define USE_TLS 1
+
+# ifndef __ASSEMBLER__
+
+/* Get system call information. */
+# include <sysdep.h>
+
+/* The TP points to the start of the thread blocks. */
+# define TLS_DTV_AT_TP 1
+
+/* Get the thread descriptor definition. */
+# include <../../descr.h>
+
+typedef struct
+{
+ dtv_t *dtv;
+ void *private;
+} tcbhead_t;
+
+/* This is the size of the initial TCB. */
+# define TLS_INIT_TCB_SIZE sizeof (tcbhead_t)
+
+/* Alignment requirements for the initial TCB. */
+# define TLS_INIT_TCB_ALIGN 16
+
+/* This is the size of the TCB. */
+# define TLS_TCB_SIZE sizeof (tcbhead_t)
+
+/* Alignment requirements for the TCB. */
+# define TLS_TCB_ALIGN 16
+
+/* This is the size we need before TCB. */
+# define TLS_PRE_TCB_SIZE sizeof (struct pthread)
+
+/* The thread pointer (in hardware register $29) points to the end of
+ the TCB + 0x7000, as for PowerPC. The pthread_descr structure is
+ immediately in front of the TCB. */
+# define TLS_TCB_OFFSET 0//0x7000
+
+/* Install the dtv pointer. The pointer passed is to the element with
+ index -1 which contain the length. */
+# define INSTALL_DTV(tcbp, dtvp) \
+ (((tcbhead_t *) (tcbp))->dtv = (dtvp) + 1)
+
+/* Install new dtv for current thread. */
+# define INSTALL_NEW_DTV(dtv) \
+ (THREAD_DTV() = (dtv))
+
+/* Return dtv of given thread descriptor. */
+# define GET_DTV(tcbp) \
+ (((tcbhead_t *) (tcbp))->dtv)
+
+/* Code to initially initialize the thread pointer. This might need
+ special attention since 'errno' is not yet available and if the
+ operation can cause a failure 'errno' must not be touched. */
+# define TLS_INIT_TP(tcbp, secondcall) \
+ ({ INTERNAL_SYSCALL_DECL (err); \
+ long result_var; \
+ result_var = INTERNAL_SYSCALL (set_thread_area, err, 1, \
+ (char *) (tcbp) + TLS_TCB_OFFSET); \
+ INTERNAL_SYSCALL_ERROR_P (result_var, err) \
+ ? "unknown error" : NULL; })
+
+/* Return the address of the dtv for the current thread. */
+# define THREAD_DTV() \
+ (((tcbhead_t *) (READ_THREAD_POINTER () - TLS_TCB_OFFSET))->dtv)
+
+/* Return the thread descriptor for the current thread. */
+# undef THREAD_SELF
+# define THREAD_SELF \
+ ((struct pthread *) (READ_THREAD_POINTER () \
+ - TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE))
+
+/* Magic for libthread_db to know how to do THREAD_SELF. */
+# define DB_THREAD_SELF \
+ CONST_THREAD_AREA (32, sizeof (struct pthread))
+
+/* Access to data in the thread descriptor is easy. */
+#define THREAD_GETMEM(descr, member) \
+ descr->member
+#define THREAD_GETMEM_NC(descr, member, idx) \
+ descr->member[idx]
+#define THREAD_SETMEM(descr, member, value) \
+ descr->member = (value)
+#define THREAD_SETMEM_NC(descr, member, idx, value) \
+ descr->member[idx] = (value)
+
+/* Initializing the thread pointer will generate a SIGILL if the syscall
+ is not available. */
+#define TLS_INIT_TP_EXPENSIVE 1
+
+/* Get and set the global scope generation counter in struct pthread. */
+#define THREAD_GSCOPE_FLAG_UNUSED 0
+#define THREAD_GSCOPE_FLAG_USED 1
+#define THREAD_GSCOPE_FLAG_WAIT 2
+#define THREAD_GSCOPE_RESET_FLAG() \
+ do \
+ { int __res \
+ = atomic_exchange_rel (&THREAD_SELF->header.gscope_flag, \
+ THREAD_GSCOPE_FLAG_UNUSED); \
+ if (__res == THREAD_GSCOPE_FLAG_WAIT) \
+ lll_futex_wake (&THREAD_SELF->header.gscope_flag, 1, LLL_PRIVATE); \
+ } \
+ while (0)
+#define THREAD_GSCOPE_SET_FLAG() \
+ do \
+ { \
+ THREAD_SELF->header.gscope_flag = THREAD_GSCOPE_FLAG_USED; \
+ atomic_write_barrier (); \
+ } \
+ while (0)
+#define THREAD_GSCOPE_WAIT() \
+ GL(dl_wait_lookup_done) ()
+
+#endif /* __ASSEMBLER__ */
+
+#endif /* tls.h */
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-20 23:36:28 +0000