android_kernel_motorola_sm6225/arch/xtensa/kernel/asm-offsets.c
Chris Zankel 6656920b0b [XTENSA] Add support for cache-aliasing
Add support for processors that have cache-aliasing issues, such as
the Stretch S5000 processor. Cache-aliasing means that the size of
the cache (for one way) is larger than the page size, thus, a page
can end up in several places in cache depending on the virtual to
physical translation. The method used here is to map a user page
temporarily through the auto-refill way 0 and of of the DTLB.
We probably will want to revisit this issue and use a better
approach with kmap/kunmap.

Signed-off-by: Chris Zankel <chris@zankel.net>
2007-08-27 13:54:16 -07:00

98 lines
3.8 KiB
C

/*
* arch/xtensa/kernel/asm-offsets.c
*
* Generates definitions from c-type structures used by assembly sources.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2005 Tensilica Inc.
*
* Chris Zankel <chris@zankel.net>
*/
#include <asm/processor.h>
#include <linux/types.h>
#include <linux/stddef.h>
#include <linux/thread_info.h>
#include <linux/ptrace.h>
#include <linux/mm.h>
#include <asm/ptrace.h>
#include <asm/processor.h>
#include <asm/uaccess.h>
#define DEFINE(sym, val) asm volatile("\n->" #sym " %0 " #val : : "i" (val))
int main(void)
{
/* struct pt_regs */
DEFINE(PT_PC, offsetof (struct pt_regs, pc));
DEFINE(PT_PS, offsetof (struct pt_regs, ps));
DEFINE(PT_DEPC, offsetof (struct pt_regs, depc));
DEFINE(PT_EXCCAUSE, offsetof (struct pt_regs, exccause));
DEFINE(PT_EXCVADDR, offsetof (struct pt_regs, excvaddr));
DEFINE(PT_DEBUGCAUSE, offsetof (struct pt_regs, debugcause));
DEFINE(PT_WMASK, offsetof (struct pt_regs, wmask));
DEFINE(PT_LBEG, offsetof (struct pt_regs, lbeg));
DEFINE(PT_LEND, offsetof (struct pt_regs, lend));
DEFINE(PT_LCOUNT, offsetof (struct pt_regs, lcount));
DEFINE(PT_SAR, offsetof (struct pt_regs, sar));
DEFINE(PT_ICOUNTLEVEL, offsetof (struct pt_regs, icountlevel));
DEFINE(PT_SYSCALL, offsetof (struct pt_regs, syscall));
DEFINE(PT_AREG, offsetof (struct pt_regs, areg[0]));
DEFINE(PT_AREG0, offsetof (struct pt_regs, areg[0]));
DEFINE(PT_AREG1, offsetof (struct pt_regs, areg[1]));
DEFINE(PT_AREG2, offsetof (struct pt_regs, areg[2]));
DEFINE(PT_AREG3, offsetof (struct pt_regs, areg[3]));
DEFINE(PT_AREG4, offsetof (struct pt_regs, areg[4]));
DEFINE(PT_AREG5, offsetof (struct pt_regs, areg[5]));
DEFINE(PT_AREG6, offsetof (struct pt_regs, areg[6]));
DEFINE(PT_AREG7, offsetof (struct pt_regs, areg[7]));
DEFINE(PT_AREG8, offsetof (struct pt_regs, areg[8]));
DEFINE(PT_AREG9, offsetof (struct pt_regs, areg[9]));
DEFINE(PT_AREG10, offsetof (struct pt_regs, areg[10]));
DEFINE(PT_AREG11, offsetof (struct pt_regs, areg[11]));
DEFINE(PT_AREG12, offsetof (struct pt_regs, areg[12]));
DEFINE(PT_AREG13, offsetof (struct pt_regs, areg[13]));
DEFINE(PT_AREG14, offsetof (struct pt_regs, areg[14]));
DEFINE(PT_AREG15, offsetof (struct pt_regs, areg[15]));
DEFINE(PT_WINDOWBASE, offsetof (struct pt_regs, windowbase));
DEFINE(PT_WINDOWSTART, offsetof(struct pt_regs, windowstart));
DEFINE(PT_SIZE, sizeof(struct pt_regs));
DEFINE(PT_AREG_END, offsetof (struct pt_regs, areg[XCHAL_NUM_AREGS]));
DEFINE(PT_USER_SIZE, offsetof(struct pt_regs, areg[XCHAL_NUM_AREGS]));
/* struct task_struct */
DEFINE(TASK_PTRACE, offsetof (struct task_struct, ptrace));
DEFINE(TASK_MM, offsetof (struct task_struct, mm));
DEFINE(TASK_ACTIVE_MM, offsetof (struct task_struct, active_mm));
DEFINE(TASK_PID, offsetof (struct task_struct, pid));
DEFINE(TASK_THREAD, offsetof (struct task_struct, thread));
DEFINE(TASK_THREAD_INFO, offsetof (struct task_struct, stack));
DEFINE(TASK_STRUCT_SIZE, sizeof (struct task_struct));
/* struct thread_info (offset from start_struct) */
DEFINE(THREAD_RA, offsetof (struct task_struct, thread.ra));
DEFINE(THREAD_SP, offsetof (struct task_struct, thread.sp));
DEFINE(THREAD_CP_SAVE, offsetof (struct task_struct, thread.cp_save));
DEFINE(THREAD_CURRENT_DS, offsetof (struct task_struct, thread.current_ds));
/* struct mm_struct */
DEFINE(MM_USERS, offsetof(struct mm_struct, mm_users));
DEFINE(MM_PGD, offsetof (struct mm_struct, pgd));
DEFINE(MM_CONTEXT, offsetof (struct mm_struct, context));
/* struct page */
DEFINE(PAGE_FLAGS, offsetof(struct page, flags));
/* constants */
DEFINE(_CLONE_VM, CLONE_VM);
DEFINE(_CLONE_UNTRACED, CLONE_UNTRACED);
DEFINE(PG_ARCH_1, PG_arch_1);
return 0;
}