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author | rgrimes <rgrimes@FreeBSD.org> | 1994-05-25 09:21:21 +0000 |
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committer | rgrimes <rgrimes@FreeBSD.org> | 1994-05-25 09:21:21 +0000 |
commit | 2469c867a164210ce96143517059f21db7f1fd17 (patch) | |
tree | 9179427ac860211c445df663fd2b86267366bfba /sys/vm/vm_param.h | |
parent | cb0aba89af15a48e2655e898a503946ac4cb42ae (diff) | |
download | FreeBSD-src-2469c867a164210ce96143517059f21db7f1fd17.zip FreeBSD-src-2469c867a164210ce96143517059f21db7f1fd17.tar.gz |
The big 4.4BSD Lite to FreeBSD 2.0.0 (Development) patch.
Reviewed by: Rodney W. Grimes
Submitted by: John Dyson and David Greenman
Diffstat (limited to 'sys/vm/vm_param.h')
-rw-r--r-- | sys/vm/vm_param.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/sys/vm/vm_param.h b/sys/vm/vm_param.h index 2d2c715..4a785ce 100644 --- a/sys/vm/vm_param.h +++ b/sys/vm/vm_param.h @@ -84,14 +84,25 @@ typedef int boolean_t; */ #define DEFAULT_PAGE_SIZE 4096 +#if 0 + /* * All references to the size of a page should be done with PAGE_SIZE * or PAGE_SHIFT. The fact they are variables is hidden here so that * we can easily make them constant if we so desire. */ +#ifndef PAGE_SIZE #define PAGE_SIZE cnt.v_page_size /* size of page */ +#endif +#ifndef PAGE_MASK #define PAGE_MASK page_mask /* size of page - 1 */ +#endif +#ifndef PAGE_SHIFT #define PAGE_SHIFT page_shift /* bits to shift for pages */ +#endif + +#endif + #ifdef KERNEL extern vm_size_t page_mask; extern int page_shift; @@ -129,17 +140,34 @@ extern int page_shift; * No rounding is used. */ #ifdef KERNEL + +#if 0 + +#ifndef atop #define atop(x) (((unsigned)(x)) >> PAGE_SHIFT) +#endif +#ifndef ptoa #define ptoa(x) ((vm_offset_t)((x) << PAGE_SHIFT)) +#endif /* * Round off or truncate to the nearest page. These will work * for either addresses or counts (i.e., 1 byte rounds to 1 page). */ +#ifndef round_page #define round_page(x) \ ((vm_offset_t)((((vm_offset_t)(x)) + PAGE_MASK) & ~PAGE_MASK)) +#endif +#ifndef trunc_page #define trunc_page(x) \ ((vm_offset_t)(((vm_offset_t)(x)) & ~PAGE_MASK)) +#endif +#ifndef num_pages +#define num_pages(x) \ + ((vm_offset_t)((((vm_offset_t)(x)) + PAGE_MASK) >> PAGE_SHIFT)) +#endif + +#endif #define num_pages(x) \ ((vm_offset_t)((((vm_offset_t)(x)) + PAGE_MASK) >> PAGE_SHIFT)) @@ -148,11 +176,13 @@ extern vm_offset_t first_addr; /* first physical page */ extern vm_offset_t last_addr; /* last physical page */ #else +#if 0 /* out-of-kernel versions of round_page and trunc_page */ #define round_page(x) \ ((((vm_offset_t)(x) + (vm_page_size - 1)) / vm_page_size) * vm_page_size) #define trunc_page(x) \ ((((vm_offset_t)(x)) / vm_page_size) * vm_page_size) +#endif #endif /* KERNEL */ #endif /* ASSEMBLER */ |