diff options
Diffstat (limited to 'libpthread/linuxthreads/sysdeps/sh/tls.h')
| -rw-r--r-- | libpthread/linuxthreads/sysdeps/sh/tls.h | 140 |
1 files changed, 49 insertions, 91 deletions
diff --git a/libpthread/linuxthreads/sysdeps/sh/tls.h b/libpthread/linuxthreads/sysdeps/sh/tls.h index 512e3181e..25bef830f 100644 --- a/libpthread/linuxthreads/sysdeps/sh/tls.h +++ b/libpthread/linuxthreads/sysdeps/sh/tls.h @@ -30,129 +30,87 @@ typedef union dtv { size_t counter; - struct - { - void *val; - bool is_static; - } pointer; + void *pointer; } dtv_t; -#else /* __ASSEMBLER__ */ -# include <tcb-offsets.h> -#endif /* __ASSEMBLER__ */ + +typedef struct +{ + void *tcb; /* Pointer to the TCB. Not necessary the + thread descriptor used by libpthread. */ + dtv_t *dtv; + void *self; /* Pointer to the thread descriptor. */ +} tcbhead_t; /* We can support TLS only if the floating-stack support is available. */ -#if defined HAVE_TLS_SUPPORT \ - && (defined FLOATING_STACKS || !defined IS_IN_libpthread) +#if defined FLOATING_STACKS && defined HAVE_TLS_SUPPORT -/* Signal that TLS support is available. */ -# define USE_TLS 1 +/* Get system call information. */ +# include <sysdep.h> -/* Include padding in _pthread_descr_struct so that libc can find p_errno, - if libpthread will only include the padding because of the !IS_IN_libpthread - check. */ -#ifndef FLOATING_STACKS -# define INCLUDE_TLS_PADDING 1 -#endif +/* Signal that TLS support is available. */ +//# define USE_TLS 1 -# ifndef __ASSEMBLER__ -typedef struct -{ - dtv_t *dtv; - void *private; -} tcbhead_t; +/* Get the thread descriptor definition. */ +# include <linuxthreads/descr.h> /* This is the size of the initial TCB. */ -# define TLS_INIT_TCB_SIZE sizeof (tcbhead_t) +# define TLS_INIT_TCB_SIZE sizeof (tcbhead_t) /* Alignment requirements for the initial TCB. */ -# define TLS_INIT_TCB_ALIGN __alignof__ (tcbhead_t) +# define TLS_INIT_TCB_ALIGN __alignof__ (tcbhead_t) /* This is the size of the TCB. */ -# define TLS_TCB_SIZE sizeof (tcbhead_t) - -/* This is the size we need before TCB. */ -# define TLS_PRE_TCB_SIZE sizeof (struct _pthread_descr_struct) +# define TLS_TCB_SIZE sizeof (struct _pthread_descr_struct) /* Alignment requirements for the TCB. */ -# define TLS_TCB_ALIGN __alignof__ (struct _pthread_descr_struct) +# define TLS_TCB_ALIGN __alignof__ (struct _pthread_descr_struct) /* The TLS blocks start right after the TCB. */ -# define TLS_DTV_AT_TP 1 +# define TLS_DTV_AT_TP 1 + /* 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 +# define INSTALL_DTV(descr, dtvp) \ + ((tcbhead_t *) (descr))->dtv = dtvp + 1 /* Install new dtv for current thread. */ -# define INSTALL_NEW_DTV(dtv) \ - ({ tcbhead_t *__tcbp; \ - __asm__ __volatile__ ("stc gbr,%0" : "=r" (__tcbp)); \ - __tcbp->dtv = (dtv);}) +# define INSTALL_NEW_DTV(dtv) \ + ({ struct _pthread_descr_struct *__descr; \ + THREAD_SETMEM (__descr, p_header.data.dtvp, (dtv)); }) /* Return dtv of given thread descriptor. */ -# define GET_DTV(tcbp) \ - (((tcbhead_t *) (tcbp))->dtv) +# define GET_DTV(descr) \ + (((tcbhead_t *) (descr))->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) \ - ({ __asm__ __volatile__ ("ldc %0,gbr" : : "r" (tcbp)); 0; }) - -/* Return the address of the dtv for the current thread. */ -# define THREAD_DTV() \ - ({ tcbhead_t *__tcbp; \ - __asm__ __volatile__ ("stc gbr,%0" : "=r" (__tcbp)); \ - __tcbp->dtv;}) +# define TLS_INIT_TP(descr, secondcall) \ + ({ \ + void *_descr = (descr); \ + int result; \ + tcbhead_t *head = _descr; \ + \ + head->tcb = _descr; \ + /* For now the thread descriptor is at the same address. */ \ + head->self = _descr; \ + \ + __asm__ ("ldc %0,gbr" : : "r" (_descr)); \ + \ + 0; \ + }) -/* Return the thread descriptor for the current thread. */ -# undef THREAD_SELF -# define THREAD_SELF \ - ({ struct _pthread_descr_struct *__self; \ - __asm__ ("stc gbr,%0" : "=r" (__self)); \ - __self - 1;}) -# undef INIT_THREAD_SELF -# define INIT_THREAD_SELF(descr, nr) \ - ({ struct _pthread_descr_struct *__self = (void *) descr; \ - __asm__ __volatile__ ("ldc %0,gbr" : : "r" (__self + 1)); \ - 0; }) - -# define TLS_MULTIPLE_THREADS_IN_TCB 1 - -/* Get the thread descriptor definition. This must be after the - the definition of THREAD_SELF for TLS. */ -# include <linuxthreads/descr.h> - -# endif /* __ASSEMBLER__ */ - -#else - -# ifndef __ASSEMBLER__ - -typedef struct -{ - void *tcb; - dtv_t *dtv; - void *self; - int multiple_threads; -} tcbhead_t; - -/* Get the thread descriptor definition. */ -# include <linuxthreads/descr.h> - -# define NONTLS_INIT_TP \ - do { \ - static const tcbhead_t nontls_init_tp = { .multiple_threads = 0 }; \ - __asm__ __volatile__ ("ldc %0,gbr" : : "r" (&nontls_init_tp)); \ - } while (0) - -# endif /* __ASSEMBLER__ */ +/* Return the address of the dtv for the current thread. */ +# define THREAD_DTV() \ + ({ struct _pthread_descr_struct *__descr; \ + THREAD_GETMEM (__descr, p_header.data.dtvp); }) -#endif /* HAVE_TLS_SUPPORT && (FLOATING_STACKS || !IS_IN_libpthread) */ +#endif /* FLOATING_STACKS && HAVE_TLS_SUPPORT */ +#endif /* __ASSEMBLER__ */ #endif /* tls.h */ |