diff options
Diffstat (limited to 'extras/mini-os/h')
| -rw-r--r-- | extras/mini-os/h/events.h | 53 | ||||
| -rw-r--r-- | extras/mini-os/h/hypervisor.h | 266 | ||||
| -rw-r--r-- | extras/mini-os/h/lib.h | 129 | ||||
| -rw-r--r-- | extras/mini-os/h/list.h | 164 | ||||
| -rw-r--r-- | extras/mini-os/h/mm.h | 107 | ||||
| -rw-r--r-- | extras/mini-os/h/os.h | 270 | ||||
| -rw-r--r-- | extras/mini-os/h/time.h | 59 | ||||
| -rw-r--r-- | extras/mini-os/h/types.h | 41 |
8 files changed, 1089 insertions, 0 deletions
diff --git a/extras/mini-os/h/events.h b/extras/mini-os/h/events.h new file mode 100644 index 0000000000..5166876b76 --- /dev/null +++ b/extras/mini-os/h/events.h @@ -0,0 +1,53 @@ +/* -*- Mode:C; c-basic-offset:4; tab-width:4 -*- + **************************************************************************** + * (C) 2003 - Rolf Neugebauer - Intel Research Cambridge + **************************************************************************** + * + * File: events.h + * Author: Rolf Neugebauer (neugebar@dcs.gla.ac.uk) + * Changes: + * + * Date: Jul 2003 + * + * Environment: Xen Minimal OS + * Description: deal with events + * + **************************************************************************** + * $Id: h-insert.h,v 1.4 2002/11/08 16:03:55 rn Exp $ + **************************************************************************** + */ + +#ifndef _EVENTS_H_ +#define _EVENTS_H_ + +/* _EVENT_* are defined in hypervisor-if.h */ +#define EV_BLKDEV _EVENT_BLKDEV +#define EV_TIMER _EVENT_TIMER +#define EV_DIE _EVENT_DIE +#define EV_DEBUG _EVENT_DEBUG +#define EV_NET _EVENT_NET +#define EV_PS2 _EVENT_PS2 + +#define NR_EVS (sizeof(HYPERVISOR_shared_info->events) * 8) + +/* ev handler status */ +#define EVS_INPROGRESS 1 /* Event handler active - do not enter! */ +#define EVS_DISABLED 2 /* Event disabled - do not enter! */ +#define EVS_PENDING 4 /* Event pending - replay on enable */ +#define EVS_REPLAY 8 /* Event has been replayed but not acked yet */ + +/* this represents a event handler. Chaining or sharing is not allowed */ +typedef struct _ev_action_t { + void (*handler)(int, struct pt_regs *); + unsigned int status; /* IRQ status */ + u32 count; +} ev_action_t; + +/* prototypes */ +unsigned int do_event(int ev, struct pt_regs *regs); +unsigned int add_ev_action( int ev, void (*handler)(int, struct pt_regs *) ); +unsigned int enable_ev_action( int ev ); +unsigned int disable_ev_action( int ev ); +void init_events(void); + +#endif /* _EVENTS_H_ */ diff --git a/extras/mini-os/h/hypervisor.h b/extras/mini-os/h/hypervisor.h new file mode 100644 index 0000000000..c0d340f339 --- /dev/null +++ b/extras/mini-os/h/hypervisor.h @@ -0,0 +1,266 @@ + +/****************************************************************************** + * hypervisor.h + * + * Linux-specific hypervisor handling. + * + * Adjusted by R Neugebauer for Xen minimal OS + * + * Copyright (c) 2002, K A Fraser + */ + +#ifndef _HYPERVISOR_H_ +#define _HYPERVISOR_H_ + +#include <types.h> + +/* include the hypervisor interface */ +#include <hypervisor-ifs/network.h> +#include <hypervisor-ifs/block.h> +#include <hypervisor-ifs/hypervisor-if.h> + + +/* + * a placeholder for the start of day information passed up from the hypervisor + */ +union start_info_union +{ + start_info_t start_info; + char padding[512]; +}; +extern union start_info_union start_info_union; +#define start_info (start_info_union.start_info) + + +/* hypervisor.c */ +void do_hypervisor_callback(struct pt_regs *regs); +void enable_hypervisor_event(unsigned int ev); +void disable_hypervisor_event(unsigned int ev); +void ack_hypervisor_event(unsigned int ev); + +/* + * Assembler stubs for hyper-calls. + */ + +static inline int HYPERVISOR_set_trap_table(trap_info_t *table) +{ + int ret; + __asm__ __volatile__ ( + TRAP_INSTR + : "=a" (ret) : "0" (__HYPERVISOR_set_trap_table), + "b" (table) ); + + return ret; +} + +static inline int HYPERVISOR_pt_update(page_update_request_t *req, int count) +{ + int ret; + __asm__ __volatile__ ( + TRAP_INSTR + : "=a" (ret) : "0" (__HYPERVISOR_pt_update), + "b" (req), "c" (count) ); + + return ret; +} + +static inline int HYPERVISOR_console_write(const char *str, int count) +{ + int ret; + __asm__ __volatile__ ( + TRAP_INSTR + : "=a" (ret) : "0" (__HYPERVISOR_console_write), + "b" (str), "c" (count) ); + + + return ret; +} + +static inline int HYPERVISOR_set_gdt(unsigned long *frame_list, int entries) +{ + int ret; + __asm__ __volatile__ ( + TRAP_INSTR + : "=a" (ret) : "0" (__HYPERVISOR_set_gdt), + "b" (frame_list), "c" (entries) ); + + + return ret; +} + +static inline int HYPERVISOR_stack_switch(unsigned long ss, unsigned long esp) +{ + int ret; + __asm__ __volatile__ ( + TRAP_INSTR + : "=a" (ret) : "0" (__HYPERVISOR_stack_switch), + "b" (ss), "c" (esp) : "memory" ); + + return ret; +} + +static inline int HYPERVISOR_set_callbacks( + unsigned long event_selector, unsigned long event_address, + unsigned long failsafe_selector, unsigned long failsafe_address) +{ + int ret; + __asm__ __volatile__ ( + TRAP_INSTR + : "=a" (ret) : "0" (__HYPERVISOR_set_callbacks), + "b" (event_selector), "c" (event_address), + "d" (failsafe_selector), "S" (failsafe_address) : "memory" ); + + return ret; +} + +static inline int HYPERVISOR_net_update(void) +{ + int ret; + __asm__ __volatile__ ( + TRAP_INSTR + : "=a" (ret) : "0" (__HYPERVISOR_net_update) ); + + return ret; +} + +static inline int HYPERVISOR_fpu_taskswitch(void) +{ + int ret; + __asm__ __volatile__ ( + TRAP_INSTR + : "=a" (ret) : "0" (__HYPERVISOR_fpu_taskswitch) ); + + return ret; +} + +static inline int HYPERVISOR_yield(void) +{ + int ret; + __asm__ __volatile__ ( + TRAP_INSTR + : "=a" (ret) : "0" (__HYPERVISOR_yield) ); + + return ret; +} + +static inline int HYPERVISOR_exit(void) +{ + int ret; + __asm__ __volatile__ ( + TRAP_INSTR + : "=a" (ret) : "0" (__HYPERVISOR_exit) ); + + return ret; +} + +static inline int HYPERVISOR_dom0_op(void *dom0_op) +{ + int ret; + __asm__ __volatile__ ( + TRAP_INSTR + : "=a" (ret) : "0" (__HYPERVISOR_dom0_op), + "b" (dom0_op) : "memory" ); + + return ret; +} + +static inline int HYPERVISOR_network_op(void *network_op) +{ + int ret; + __asm__ __volatile__ ( + TRAP_INSTR + : "=a" (ret) : "0" (__HYPERVISOR_network_op), + "b" (network_op) ); + + return ret; +} + +static inline int HYPERVISOR_block_io_op(void) +{ + int ret; + __asm__ __volatile__ ( + TRAP_INSTR + : "=a" (ret) : "0" (__HYPERVISOR_block_io_op) ); + + return ret; +} + +static inline int HYPERVISOR_set_debugreg(int reg, unsigned long value) +{ + int ret; + __asm__ __volatile__ ( + TRAP_INSTR + : "=a" (ret) : "0" (__HYPERVISOR_set_debugreg), + "b" (reg), "c" (value) ); + + return ret; +} + +static inline unsigned long HYPERVISOR_get_debugreg(int reg) +{ + unsigned long ret; + __asm__ __volatile__ ( + TRAP_INSTR + : "=a" (ret) : "0" (__HYPERVISOR_get_debugreg), + "b" (reg) ); + + return ret; +} + +static inline int HYPERVISOR_update_descriptor( + unsigned long pa, unsigned long word1, unsigned long word2) +{ + int ret; + __asm__ __volatile__ ( + TRAP_INSTR + : "=a" (ret) : "0" (__HYPERVISOR_update_descriptor), + "b" (pa), "c" (word1), "d" (word2) ); + + return ret; +} + +static inline int HYPERVISOR_set_fast_trap(int idx) +{ + int ret; + __asm__ __volatile__ ( + TRAP_INSTR + : "=a" (ret) : "0" (__HYPERVISOR_set_fast_trap), + "b" (idx) ); + + return ret; +} + +static inline int HYPERVISOR_dom_mem_op(void *dom_mem_op) +{ + int ret; + __asm__ __volatile__ ( + TRAP_INSTR + : "=a" (ret) : "0" (__HYPERVISOR_dom_mem_op), + "b" (dom_mem_op) : "memory" ); + + return ret; +} + +static inline int HYPERVISOR_multicall(void *call_list, int nr_calls) +{ + int ret; + __asm__ __volatile__ ( + TRAP_INSTR + : "=a" (ret) : "0" (__HYPERVISOR_multicall), + "b" (call_list), "c" (nr_calls) : "memory" ); + + return ret; +} + +static inline long HYPERVISOR_kbd_op(unsigned char op, unsigned char val) +{ + int ret; + __asm__ __volatile__ ( + TRAP_INSTR + : "=a" (ret) : "0" (__HYPERVISOR_kbd_op), + "b" (op), "c" (val) ); + + return ret; +} + +#endif /* __HYPERVISOR_H__ */ diff --git a/extras/mini-os/h/lib.h b/extras/mini-os/h/lib.h new file mode 100644 index 0000000000..48140ab79d --- /dev/null +++ b/extras/mini-os/h/lib.h @@ -0,0 +1,129 @@ +/* -*- Mode:C; c-basic-offset:4; tab-width:4 -*- + **************************************************************************** + * (C) 2003 - Rolf Neugebauer - Intel Research Cambridge + **************************************************************************** + * + * File: lib.h + * Author: Rolf Neugebauer (neugebar@dcs.gla.ac.uk) + * Changes: + * + * Date: Aug 2003 + * + * Environment: Xen Minimal OS + * Description: Random useful library functions, contains some freebsd stuff + * + **************************************************************************** + * $Id: h-insert.h,v 1.4 2002/11/08 16:03:55 rn Exp $ + **************************************************************************** + * + *- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)stdarg.h 8.1 (Berkeley) 6/10/93 + * $FreeBSD: src/sys/i386/include/stdarg.h,v 1.10 1999/08/28 00:44:26 peter Exp $ + */ + +#ifndef _LIB_H_ +#define _LIB_H_ + + +/* variadic function support */ +typedef char *va_list; +#define __va_size(type) \ + (((sizeof(type) + sizeof(int) - 1) / sizeof(int)) * sizeof(int)) +#ifdef __GNUC__ +#define va_start(ap, last) \ + ((ap) = (va_list)__builtin_next_arg(last)) +#else +#define va_start(ap, last) \ + ((ap) = (va_list)&(last) + __va_size(last)) +#endif +#define va_arg(ap, type) \ + (*(type *)((ap) += __va_size(type), (ap) - __va_size(type))) +#define va_end(ap) + + +/* printing */ +#define printk printf +#define kprintf printf +int printf(const char *fmt, ...); +int vprintf(const char *fmt, va_list ap); +int sprintf(char *buf, const char *cfmt, ...); +int vsprintf(char *buf, const char *cfmt, va_list ap); + +/* string and memory manipulation */ +int memcmp(const void *cs, const void *ct, size_t count); +void *memcpy(void *dest, const void *src, size_t count); +int strncmp(const char *cs, const char *ct, size_t count); +int strcmp(const char *cs, const char *ct); +char *strcpy(char *dest, const char *src); +char *strncpy(char *dest, const char *src, size_t count); +void *memset(void *s,int c, size_t count); +size_t strnlen(const char *s, size_t count); +size_t strlen(const char *s); +char *strchr(const char *s, int c); +char *strstr(const char *s1, const char *s2); + + +/* dlmalloc functions */ +struct mallinfo { + int arena; /* non-mmapped space allocated from system */ + int ordblks; /* number of free chunks */ + int smblks; /* number of fastbin blocks */ + int hblks; /* number of mmapped regions */ + int hblkhd; /* space in mmapped regions */ + int usmblks; /* maximum total allocated space */ + int fsmblks; /* space available in freed fastbin blocks */ + int uordblks; /* total allocated space */ + int fordblks; /* total free space */ + int keepcost; /* top-most, releasable (via malloc_trim) space */ +}; + +void *malloc(size_t n); +void *calloc(size_t n_elements, size_t element_size); +void free(void* p); +void *realloc(void* p, size_t n); +void *memalign(size_t alignment, size_t n); +void *valloc(size_t n); +struct mallinfo mallinfo(); +int mallopt(int parameter_number, int parameter_value); + +void **independent_calloc(size_t n_elements, size_t size, void* chunks[]); +void **independent_comalloc(size_t n_elements, size_t sizes[], void* chunks[]); +void *pvalloc(size_t n); +void cfree(void* p); +int malloc_trim(size_t pad); +size_t malloc_usable_size(void* p); +void malloc_stats(); + + +#endif /* _LIB_H_ */ diff --git a/extras/mini-os/h/list.h b/extras/mini-os/h/list.h new file mode 100644 index 0000000000..eec102405c --- /dev/null +++ b/extras/mini-os/h/list.h @@ -0,0 +1,164 @@ +#ifndef _LINUX_LIST_H +#define _LINUX_LIST_H + +#define ASSERT(x) ((void)0) + +/* + * Simple doubly linked list implementation. + * + * Some of the internal functions ("__xxx") are useful when + * manipulating whole lists rather than single entries, as + * sometimes we already know the next/prev entries and we can + * generate better code by using them directly rather than + * using the generic single-entry routines. + */ + +struct list_head { + struct list_head *next, *prev; +}; + +#define LIST_HEAD_INIT(name) { &(name), &(name) } + +#define LIST_HEAD(name) \ + struct list_head name = LIST_HEAD_INIT(name) + +#define INIT_LIST_HEAD(ptr) do { \ + (ptr)->next = (ptr); (ptr)->prev = (ptr); \ +} while (0) + +/* + * Insert a new entry between two known consecutive entries. + * + * This is only for internal list manipulation where we know + * the prev/next entries already! + */ +static __inline__ void __list_add(struct list_head * new, + struct list_head * prev, + struct list_head * next) +{ + next->prev = new; + new->next = next; + new->prev = prev; + prev->next = new; +} + +/** + * list_add - add a new entry + * @new: new entry to be added + * @head: list head to add it after + * + * Insert a new entry after the specified head. + * This is good for implementing stacks. + */ +static __inline__ void list_add(struct list_head *new, struct list_head *head) +{ + __list_add(new, head, head->next); +} + +/** + * list_add_tail - add a new entry + * @new: new entry to be added + * @head: list head to add it before + * + * Insert a new entry before the specified head. + * This is useful for implementing queues. + */ +static __inline__ void list_add_tail(struct list_head *new, struct list_head *head) +{ + __list_add(new, head->prev, head); +} + +/* + * Delete a list entry by making the prev/next entries + * point to each other. + * + * This is only for internal list manipulation where we know + * the prev/next entries already! + */ +static __inline__ void __list_del(struct list_head * prev, + struct list_head * next) +{ + next->prev = prev; + prev->next = next; +} + +/** + * list_del - deletes entry from list. + * @entry: the element to delete from the list. + * Note: list_empty on entry does not return true after this, the entry is in an undefined state. + */ +static __inline__ void list_del(struct list_head *entry) +{ + ASSERT(entry->next->prev == entry); + ASSERT(entry->prev->next == entry); + __list_del(entry->prev, entry->next); +} + +/** + * list_del_init - deletes entry from list and reinitialize it. + * @entry: the element to delete from the list. + */ +static __inline__ void list_del_init(struct list_head *entry) +{ + __list_del(entry->prev, entry->next); + INIT_LIST_HEAD(entry); +} + +/** + * list_empty - tests whether a list is empty + * @head: the list to test. + */ +static __inline__ int list_empty(struct list_head *head) +{ + return head->next == head; +} + +/** + * list_splice - join two lists + * @list: the new list to add. + * @head: the place to add it in the first list. + */ +static __inline__ void list_splice(struct list_head *list, struct list_head *head) +{ + struct list_head *first = list->next; + + if (first != list) { + struct list_head *last = list->prev; + struct list_head *at = head->next; + + first->prev = head; + head->next = first; + + last->next = at; + at->prev = last; + } +} + +/** + * list_entry - get the struct for this entry + * @ptr: the &struct list_head pointer. + * @type: the type of the struct this is embedded in. + * @member: the name of the list_struct within the struct. + */ +#define list_entry(ptr, type, member) \ + ((type *)((char *)(ptr)-(unsigned long)(&((type *)0)->member))) + +/** + * list_for_each - iterate over a list + * @pos: the &struct list_head to use as a loop counter. + * @head: the head for your list. + */ +#define list_for_each(pos, head) \ + for (pos = (head)->next; pos != (head); pos = pos->next) + +/** + * list_for_each_safe - iterate over a list safe against removal of list entry + * @pos: the &struct list_head to use as a loop counter. + * @n: another &struct list_head to use as temporary storage + * @head: the head for your list. + */ +#define list_for_each_safe(pos, n, head) \ + for (pos = (head)->next, n = pos->next; pos != (head); \ + pos = n, n = pos->next) + +#endif diff --git a/extras/mini-os/h/mm.h b/extras/mini-os/h/mm.h new file mode 100644 index 0000000000..9cc2271f91 --- /dev/null +++ b/extras/mini-os/h/mm.h @@ -0,0 +1,107 @@ +/* -*- Mode:C; c-basic-offset:4; tab-width:4 -*- + **************************************************************************** + * (C) 2003 - Rolf Neugebauer - Intel Research Cambridge + **************************************************************************** + * + * File: mm.h + * Author: Rolf Neugebauer (neugebar@dcs.gla.ac.uk) + * Changes: + * + * Date: Aug 2003 + * + * Environment: + * Description: + * + **************************************************************************** + * $Id: h-insert.h,v 1.4 2002/11/08 16:03:55 rn Exp $ + **************************************************************************** + */ + +#ifndef _MM_H_ +#define _MM_H_ + +/* PAGE_SHIFT determines the page size */ +#define PAGE_SHIFT 12 +#define PAGE_SIZE (1UL << PAGE_SHIFT) +#define PAGE_MASK (~(PAGE_SIZE-1)) + + +#define PFN_UP(x) (((x) + PAGE_SIZE-1) >> PAGE_SHIFT) +#define PFN_DOWN(x) ((x) >> PAGE_SHIFT) +#define PFN_PHYS(x) ((x) << PAGE_SHIFT) + + +/* to align the pointer to the (next) page boundary */ +#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK) + + +extern unsigned long *phys_to_machine_mapping; +#define pfn_to_mfn(_pfn) (phys_to_machine_mapping[(_pfn)]) +#define mfn_to_pfn(_mfn) (machine_to_phys_mapping[(_mfn)]) +static inline unsigned long phys_to_machine(unsigned long phys) +{ + unsigned long machine = pfn_to_mfn(phys >> PAGE_SHIFT); + machine = (machine << PAGE_SHIFT) | (phys & ~PAGE_MASK); + return machine; +} +static inline unsigned long machine_to_phys(unsigned long machine) +{ + unsigned long phys = mfn_to_pfn(machine >> PAGE_SHIFT); + phys = (phys << PAGE_SHIFT) | (machine & ~PAGE_MASK); + return phys; +} + +/* VIRT <-> MACHINE conversion */ +#define virt_to_machine(_a) (phys_to_machine(__pa(_a))) +#define machine_to_virt(_m) (__va(machine_to_phys(_m))) + +/* + * This handles the memory map.. We could make this a config + * option, but too many people screw it up, and too few need + * it. + * + * A __PAGE_OFFSET of 0xC0000000 means that the kernel has + * a virtual address space of one gigabyte, which limits the + * amount of physical memory you can use to about 950MB. + * + * If you want more physical memory than this then see the CONFIG_HIGHMEM4G + * and CONFIG_HIGHMEM64G options in the kernel configuration. + */ + +#define __PAGE_OFFSET (0xC0000000) + +#define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET) +#define __pa(x) ((unsigned long)(x)-PAGE_OFFSET) +#define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET)) +#define virt_to_page(kaddr) (mem_map + (__pa(kaddr) >> PAGE_SHIFT)) +#define VALID_PAGE(page) ((page - mem_map) < max_mapnr) + +#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \ + VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) + + +/* prototypes */ +void init_mm(); +void release_bytes_to_allocator(unsigned long min, unsigned long max); +unsigned long __get_free_pages(int order); +void __free_pages(unsigned long p, int order); +#define get_free_pages(_o) (__get_free_pages(_o)) +#define get_free_page() (__get_free_pages(0)) +#define free_pages(_p,_o) (__free_pages(_p,_o)) +#define free_page(_p) (__free_pages(_p,0)) + +static __inline__ int get_order(unsigned long size) +{ + int order; + + size = (size-1) >> (PAGE_SHIFT-1); + order = -1; + do { + size >>= 1; + order++; + } while (size); + return order; +} + + +#endif /* _MM_H_ */ diff --git a/extras/mini-os/h/os.h b/extras/mini-os/h/os.h new file mode 100644 index 0000000000..2645bea954 --- /dev/null +++ b/extras/mini-os/h/os.h @@ -0,0 +1,270 @@ +/****************************************************************************** + * os.h + * + * random collection of macros and definition + */ + +#ifndef _OS_H_ +#define _OS_H_ + + +#define NULL 0 + +/* + * These are the segment descriptors provided for us by the hypervisor. + * For now, these are hardwired -- guest OSes cannot update the GDT + * or LDT. + * + * It shouldn't be hard to support descriptor-table frobbing -- let me + * know if the BSD or XP ports require flexibility here. + */ + + +/* + * these are also defined in hypervisor-if.h but can't be pulled in as + * they are used in start of day assembly. Need to clean up the .h files + * a bit more... + */ + +#ifndef FLAT_RING1_CS +#define FLAT_RING1_CS 0x0819 +#define FLAT_RING1_DS 0x0821 +#define FLAT_RING3_CS 0x082b +#define FLAT_RING3_DS 0x0833 +#endif + +#define __KERNEL_CS FLAT_RING1_CS +#define __KERNEL_DS FLAT_RING1_DS + +/* Everything below this point is not included by assembler (.S) files. */ +#ifndef __ASSEMBLY__ + +#include <types.h> +#include <hypervisor-ifs/hypervisor-if.h> + + +/* this struct defines the way the registers are stored on the + stack during an exception or interrupt. */ +struct pt_regs { + long ebx; + long ecx; + long edx; + long esi; + long edi; + long ebp; + long eax; + int xds; + int xes; + long orig_eax; + long eip; + int xcs; + long eflags; + long esp; + int xss; +}; + + +/* + * STI/CLI equivalents. These basically set and clear the virtual + * event_enable flag in teh shared_info structure. Note that when + * the enable bit is set, there may be pending events to be handled. + * We may therefore call into do_hypervisor_callback() directly. + */ +#define unlikely(x) __builtin_expect((x),0) +#define __save_flags(x) \ +do { \ + (x) = test_bit(EVENTS_MASTER_ENABLE_BIT, \ + &HYPERVISOR_shared_info->events_mask); \ + barrier(); \ +} while (0) + +#define __restore_flags(x) \ +do { \ + shared_info_t *_shared = HYPERVISOR_shared_info; \ + if (x) set_bit(EVENTS_MASTER_ENABLE_BIT, &_shared->events_mask); \ + barrier(); \ + if ( unlikely(_shared->events) && (x) ) do_hypervisor_callback(NULL); \ +} while (0) + +#define __cli() \ +do { \ + clear_bit(EVENTS_MASTER_ENABLE_BIT, &HYPERVISOR_shared_info->events_mask);\ + barrier(); \ +} while (0) + +#define __sti() \ +do { \ + shared_info_t *_shared = HYPERVISOR_shared_info; \ + set_bit(EVENTS_MASTER_ENABLE_BIT, &_shared->events_mask); \ + barrier(); \ + if ( unlikely(_shared->events) ) do_hypervisor_callback(NULL); \ +} while (0) +#define cli() __cli() +#define sti() __sti() +#define save_flags(x) __save_flags(x) +#define restore_flags(x) __restore_flags(x) +#define save_and_cli(x) __save_and_cli(x) +#define save_and_sti(x) __save_and_sti(x) + + + +/* This is a barrier for the compiler only, NOT the processor! */ +#define barrier() __asm__ __volatile__("": : :"memory") + +#define LOCK_PREFIX "" +#define LOCK "" +#define ADDR (*(volatile long *) addr) +/* + * Make sure gcc doesn't try to be clever and move things around + * on us. We need to use _exactly_ the address the user gave us, + * not some alias that contains the same information. + */ +typedef struct { volatile int counter; } atomic_t; + + +/* + * This XCHG macro is straight from Linux. It is gross. + */ +#define xchg(ptr,v) \ + ((__typeof__(*(ptr)))__xchg((unsigned long)(v),(ptr),sizeof(*(ptr)))) +struct __xchg_dummy { unsigned long a[100]; }; +#define __xg(x) ((struct __xchg_dummy *)(x)) +static inline unsigned long __xchg(unsigned long x, volatile void * ptr, + int size) +{ + switch (size) { + case 1: + __asm__ __volatile__("xchgb %b0,%1" + :"=q" (x) + :"m" (*__xg(ptr)), "0" (x) + :"memory"); + break; + case 2: + __asm__ __volatile__("xchgw %w0,%1" + :"=r" (x) + :"m" (*__xg(ptr)), "0" (x) + :"memory"); + break; + case 4: + __asm__ __volatile__("xchgl %0,%1" + :"=r" (x) + :"m" (*__xg(ptr)), "0" (x) + :"memory"); + break; + } + return x; +} + +/** + * test_and_clear_bit - Clear a bit and return its old value + * @nr: Bit to set + * @addr: Address to count from + * + * This operation is atomic and cannot be reordered. + * It also implies a memory barrier. + */ +static __inline__ int test_and_clear_bit(int nr, volatile void * addr) +{ + int oldbit; + + __asm__ __volatile__( LOCK_PREFIX + "btrl %2,%1\n\tsbbl %0,%0" + :"=r" (oldbit),"=m" (ADDR) + :"Ir" (nr) : "memory"); + return oldbit; +} + +static __inline__ int constant_test_bit(int nr, const volatile void * addr) +{ + return ((1UL << (nr & 31)) & (((const volatile unsigned int *) addr)[nr >> 5])) != 0; +} + +static __inline__ int variable_test_bit(int nr, volatile void * addr) +{ + int oldbit; + + __asm__ __volatile__( + "btl %2,%1\n\tsbbl %0,%0" + :"=r" (oldbit) + :"m" (ADDR),"Ir" (nr)); + return oldbit; +} + +#define test_bit(nr,addr) \ +(__builtin_constant_p(nr) ? \ + constant_test_bit((nr),(addr)) : \ + variable_test_bit((nr),(addr))) + + +/** + * set_bit - Atomically set a bit in memory + * @nr: the bit to set + * @addr: the address to start counting from + * + * This function is atomic and may not be reordered. See __set_bit() + * if you do not require the atomic guarantees. + * Note that @nr may be almost arbitrarily large; this function is not + * restricted to acting on a single-word quantity. + */ +static __inline__ void set_bit(int nr, volatile void * addr) +{ + __asm__ __volatile__( LOCK_PREFIX + "btsl %1,%0" + :"=m" (ADDR) + :"Ir" (nr)); +} + +/** + * clear_bit - Clears a bit in memory + * @nr: Bit to clear + * @addr: Address to start counting from + * + * clear_bit() is atomic and may not be reordered. However, it does + * not contain a memory barrier, so if it is used for locking purposes, + * you should call smp_mb__before_clear_bit() and/or smp_mb__after_clear_bit() + * in order to ensure changes are visible on other processors. + */ +static __inline__ void clear_bit(int nr, volatile void * addr) +{ + __asm__ __volatile__( LOCK_PREFIX + "btrl %1,%0" + :"=m" (ADDR) + :"Ir" (nr)); +} + +/** + * atomic_inc - increment atomic variable + * @v: pointer of type atomic_t + * + * Atomically increments @v by 1. Note that the guaranteed + * useful range of an atomic_t is only 24 bits. + */ +static __inline__ void atomic_inc(atomic_t *v) +{ + __asm__ __volatile__( + LOCK "incl %0" + :"=m" (v->counter) + :"m" (v->counter)); +} + + +/* useful hypervisor macros */ + +struct desc_struct { + unsigned long a,b; +}; +extern struct desc_struct default_ldt[]; + +#define asmlinkage __attribute__((regparm(0))) + +/* + * some random linux macros + */ + +#define rdtscll(val) \ + __asm__ __volatile__("rdtsc" : "=A" (val)) + + +#endif /* !__ASSEMBLY__ */ + +#endif /* _OS_H_ */ diff --git a/extras/mini-os/h/time.h b/extras/mini-os/h/time.h new file mode 100644 index 0000000000..b136f4b0c3 --- /dev/null +++ b/extras/mini-os/h/time.h @@ -0,0 +1,59 @@ +/* -*- Mode:C; c-basic-offset:4; tab-width:4 -*- + **************************************************************************** + * (C) 2003 - Rolf Neugebauer - Intel Research Cambridge + **************************************************************************** + * + * File: time.h + * Author: Rolf Neugebauer (neugebar@dcs.gla.ac.uk) + * Changes: + * + * Date: Jul 2003 + * + * Environment: Xen Minimal OS + * Description: Time and timer functions + * + **************************************************************************** + * $Id: h-insert.h,v 1.4 2002/11/08 16:03:55 rn Exp $ + **************************************************************************** + */ + +#ifndef _TIME_H_ +#define _TIME_H_ + +#include <list.h> + +/* + * System Time + * 64 bit value containing the nanoseconds elapsed since boot time. + * This value is adjusted by frequency drift. + * NOW() returns the current time. + * The other macros are for convenience to approximate short intervals + * of real time into system time + */ +typedef s64 s_time_t; +#define NOW() ((s_time_t)get_s_time()) +#define SECONDS(_s) (((s_time_t)(_s)) * 1000000000UL ) +#define TENTHS(_ts) (((s_time_t)(_ts)) * 100000000UL ) +#define HUNDREDTHS(_hs) (((s_time_t)(_hs)) * 10000000UL ) +#define MILLISECS(_ms) (((s_time_t)(_ms)) * 1000000UL ) +#define MICROSECS(_us) (((s_time_t)(_us)) * 1000UL ) +#define Time_Max ((s_time_t) 0x7fffffffffffffffLL) +#define FOREVER Time_Max + + +/* wall clock time */ +typedef long time_t; +typedef long suseconds_t; +struct timeval { + time_t tv_sec; /* seconds */ + suseconds_t tv_usec; /* microseconds */ +}; + + +/* prototypes */ +void init_time(void); +s_time_t get_s_time(void); +s_time_t get_v_time(void); +void gettimeofday(struct timeval *tv); + +#endif /* _TIME_H_ */ diff --git a/extras/mini-os/h/types.h b/extras/mini-os/h/types.h new file mode 100644 index 0000000000..4f87a74e99 --- /dev/null +++ b/extras/mini-os/h/types.h @@ -0,0 +1,41 @@ +/* -*- Mode:C; c-basic-offset:4; tab-width:4 -*- + **************************************************************************** + * (C) 2003 - Rolf Neugebauer - Intel Research Cambridge + **************************************************************************** + * + * File: types.h + * Author: Rolf Neugebauer (neugebar@dcs.gla.ac.uk) + * Changes: + * + * Date: May 2003 + * + * Environment: Xeno Minimal OS + * Description: a random collection of type definitions + * + **************************************************************************** + * $Id: h-insert.h,v 1.4 2002/11/08 16:03:55 rn Exp $ + **************************************************************************** + */ + +#ifndef _TYPES_H_ +#define _TYPES_H_ + +typedef signed char s8; +typedef unsigned char u8; +typedef signed short s16; +typedef unsigned short u16; +typedef signed int s32; +typedef unsigned int u32; +typedef signed long long s64; +typedef unsigned long long u64; + +typedef unsigned int size_t; + +/* FreeBSD compat types */ +typedef unsigned char u_char; +typedef unsigned int u_int; +typedef unsigned long u_long; +typedef long long quad_t; +typedef unsigned long long u_quad_t; +typedef unsigned int uintptr_t; +#endif /* _TYPES_H_ */ |