Changes in uspace/lib/c/generic/as.c [63f8966:56273bb] in mainline
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uspace/lib/c/generic/as.c
r63f8966 r56273bb 40 40 #include <bitops.h> 41 41 #include <malloc.h> 42 43 /** Last position allocated by as_get_mappable_page */ 44 static uintptr_t last_allocated = 0; 42 #include "private/libc.h" 45 43 46 44 /** Create address space area. … … 53 51 * 54 52 */ 55 void *as_area_create(void *address, size_t size, int flags)53 void *as_area_create(void *address, size_t size, unsigned int flags) 56 54 { 57 55 return (void *) __SYSCALL3(SYS_AS_AREA_CREATE, (sysarg_t) address, … … 69 67 * 70 68 */ 71 int as_area_resize(void *address, size_t size, int flags)69 int as_area_resize(void *address, size_t size, unsigned int flags) 72 70 { 73 71 return __SYSCALL3(SYS_AS_AREA_RESIZE, (sysarg_t) address, … … 97 95 * 98 96 */ 99 int as_area_change_flags(void *address, int flags)97 int as_area_change_flags(void *address, unsigned int flags) 100 98 { 101 99 return __SYSCALL2(SYS_AS_AREA_CHANGE_FLAGS, (sysarg_t) address, … … 103 101 } 104 102 105 /** Return pointer to some unmapped area, where fits new as_area103 /** Return pointer to unmapped address space area 106 104 * 107 105 * @param size Requested size of the allocation. 108 106 * 109 * @return pointer to the beginning107 * @return Pointer to the beginning of unmapped address space area. 110 108 * 111 109 */ 112 110 void *as_get_mappable_page(size_t size) 113 111 { 114 if (size == 0) 115 return NULL; 116 117 size_t sz = 1 << (fnzb(size - 1) + 1); 118 if (last_allocated == 0) 119 last_allocated = get_max_heap_addr(); 120 121 /* 122 * Make sure we allocate from naturally aligned address. 123 */ 124 uintptr_t res = ALIGN_UP(last_allocated, sz); 125 last_allocated = res + ALIGN_UP(size, PAGE_SIZE); 126 127 return ((void *) res); 112 return (void *) __SYSCALL2(SYS_AS_GET_UNMAPPED_AREA, 113 (sysarg_t) __entry, (sysarg_t) size); 128 114 } 129 115
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