mirror of
https://github.com/ziglang/zig.git
synced 2025-12-06 14:23:09 +00:00
553cb3ed46
sys/param.h was manually adjusted to not define __NetBSD_Version__ since it will be defined by the compiler.
95 lines
2.6 KiB
C
Vendored
95 lines
2.6 KiB
C
Vendored
/* $NetBSD: vmparam.h,v 1.26.4.1 2023/12/29 20:21:39 martin Exp $ */
|
|
|
|
#ifndef _POWERPC_VMPARAM_H_
|
|
#define _POWERPC_VMPARAM_H_
|
|
|
|
#ifdef _KERNEL_OPT
|
|
#include "opt_modular.h"
|
|
#include "opt_ppcarch.h"
|
|
#endif
|
|
|
|
/*
|
|
* These are common for BOOKE, IBM4XX, and OEA
|
|
*/
|
|
#define VM_FREELIST_DEFAULT 0
|
|
#define VM_FREELIST_DIRECT_MAPPED 1
|
|
#define VM_FREELIST_FIRST16 2
|
|
#define VM_NFREELIST 3
|
|
|
|
#define VM_PHYSSEG_MAX 16
|
|
|
|
/*
|
|
* The address to which unspecified mapping requests default
|
|
* Put the stack in its own segment and start mmaping at the
|
|
* top of the next lower segment.
|
|
*/
|
|
#define __USE_TOPDOWN_VM
|
|
#define VM_DEFAULT_ADDRESS_BOTTOMUP(da, sz) \
|
|
round_page((vaddr_t)(da) + (vsize_t)maxdmap)
|
|
|
|
#if defined(MODULAR) || defined(_MODULE) || !defined(_KERNEL)
|
|
/*
|
|
* If we are a module or a modular kernel, then we need to defined the range
|
|
* of our variable page sizes since BOOKE and OEA use 4KB pages while IBM4XX
|
|
* use 16KB pages.
|
|
* This is also required for userland by jemalloc.
|
|
*/
|
|
#define MIN_PAGE_SHIFT 12 /* BOOKE/OEA */
|
|
#define MAX_PAGE_SHIFT 14 /* IBM4XX */
|
|
#define MIN_PAGE_SIZE (1 << MIN_PAGE_SHIFT)
|
|
#define MAX_PAGE_SIZE (1 << MAX_PAGE_SHIFT)
|
|
#endif /* MODULAR || _MODULE || !_KERNEL */
|
|
|
|
#if defined(_MODULE)
|
|
#if defined(_RUMPKERNEL)
|
|
/*
|
|
* Safe definitions for RUMP kernels
|
|
*/
|
|
#define VM_MAXUSER_ADDRESS 0x7fff8000
|
|
#define VM_MIN_ADDRESS 0x00000000
|
|
#define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS
|
|
#define MAXDSIZ (1024*1024*1024)
|
|
#define MAXSSIZ (32*1024*1024)
|
|
#define MAXTSIZ (256*1024*1024)
|
|
#else /* !_RUMPKERNEL */
|
|
/*
|
|
* Some modules need some of the constants but those vary between the variants
|
|
* so those constants are exported as linker symbols so they don't take up any
|
|
* space but also avoid an extra load to put into a register.
|
|
*/
|
|
extern const char __USRSTACK; /* let the linker resolve it */
|
|
|
|
#define USRSTACK ((vaddr_t)(uintptr_t)&__USRSTACK)
|
|
#endif /* !_RUMPKERNEL */
|
|
|
|
#else /* !_MODULE */
|
|
|
|
#if defined(PPC_BOOKE)
|
|
#include <powerpc/booke/vmparam.h>
|
|
#elif defined(PPC_IBM4XX)
|
|
#include <powerpc/ibm4xx/vmparam.h>
|
|
#elif defined(PPC_OEA) || defined (PPC_OEA64) || defined (PPC_OEA64_BRIDGE)
|
|
#include <powerpc/oea/vmparam.h>
|
|
#elif defined(_KERNEL)
|
|
#error unknown PPC variant
|
|
#endif
|
|
|
|
#endif /* !_MODULE */
|
|
|
|
#if defined(MODULAR) || defined(_MODULE)
|
|
/*
|
|
* If we are a module or support modules, we need to define a compatible
|
|
* pmap_physseg since IBM4XX uses one. This will waste a tiny of space
|
|
* but is needed for compatibility.
|
|
*/
|
|
#ifndef __HAVE_PMAP_PHYSSEG
|
|
#define __HAVE_PMAP_PHYSSEG
|
|
struct pmap_physseg {
|
|
uintptr_t pmseg_dummy[2];
|
|
};
|
|
#endif
|
|
|
|
__CTASSERT(sizeof(struct pmap_physseg) == sizeof(uintptr_t) * 2);
|
|
#endif /* MODULAR || _MODULE */
|
|
|
|
#endif /* !_POWERPC_VMPARAM_H_ */ |