diff options
Diffstat (limited to 'nptl/allocatestack.c')
-rw-r--r-- | nptl/allocatestack.c | 59 |
1 files changed, 5 insertions, 54 deletions
diff --git a/nptl/allocatestack.c b/nptl/allocatestack.c index 9be6c42..cfe37a3 100644 --- a/nptl/allocatestack.c +++ b/nptl/allocatestack.c @@ -33,47 +33,6 @@ #include <kernel-features.h> #include <nptl-stack.h> -#ifndef NEED_SEPARATE_REGISTER_STACK - -/* Most architectures have exactly one stack pointer. Some have more. */ -# define STACK_VARIABLES void *stackaddr = NULL - -/* How to pass the values to the 'create_thread' function. */ -# define STACK_VARIABLES_ARGS stackaddr - -/* How to declare function which gets there parameters. */ -# define STACK_VARIABLES_PARMS void *stackaddr - -/* How to declare allocate_stack. */ -# define ALLOCATE_STACK_PARMS void **stack - -/* This is how the function is called. We do it this way to allow - other variants of the function to have more parameters. */ -# define ALLOCATE_STACK(attr, pd) allocate_stack (attr, pd, &stackaddr) - -#else - -/* We need two stacks. The kernel will place them but we have to tell - the kernel about the size of the reserved address space. */ -# define STACK_VARIABLES void *stackaddr = NULL; size_t stacksize = 0 - -/* How to pass the values to the 'create_thread' function. */ -# define STACK_VARIABLES_ARGS stackaddr, stacksize - -/* How to declare function which gets there parameters. */ -# define STACK_VARIABLES_PARMS void *stackaddr, size_t stacksize - -/* How to declare allocate_stack. */ -# define ALLOCATE_STACK_PARMS void **stack, size_t *stacksize - -/* This is how the function is called. We do it this way to allow - other variants of the function to have more parameters. */ -# define ALLOCATE_STACK(attr, pd) \ - allocate_stack (attr, pd, &stackaddr, &stacksize) - -#endif - - /* Default alignment of stack. */ #ifndef STACK_ALIGN # define STACK_ALIGN __alignof__ (long double) @@ -252,7 +211,7 @@ advise_stack_range (void *mem, size_t size, uintptr_t pd, size_t guardsize) PDP must be non-NULL. */ static int allocate_stack (const struct pthread_attr *attr, struct pthread **pdp, - ALLOCATE_STACK_PARMS) + void **stack, size_t *stacksize) { struct pthread *pd; size_t size; @@ -603,25 +562,17 @@ allocate_stack (const struct pthread_attr *attr, struct pthread **pdp, /* We place the thread descriptor at the end of the stack. */ *pdp = pd; -#if _STACK_GROWS_DOWN void *stacktop; -# if TLS_TCB_AT_TP +#if TLS_TCB_AT_TP /* The stack begins before the TCB and the static TLS block. */ stacktop = ((char *) (pd + 1) - tls_static_size_for_stack); -# elif TLS_DTV_AT_TP +#elif TLS_DTV_AT_TP stacktop = (char *) (pd - 1); -# endif +#endif -# ifdef NEED_SEPARATE_REGISTER_STACK + *stacksize = stacktop - pd->stackblock; *stack = pd->stackblock; - *stacksize = stacktop - *stack; -# else - *stack = stacktop; -# endif -#else - *stack = pd->stackblock; -#endif return 0; } |