diff options
Diffstat (limited to 'arch/parisc/hpux/gate.S')
| -rw-r--r-- | arch/parisc/hpux/gate.S | 107 |
1 files changed, 0 insertions, 107 deletions
diff --git a/arch/parisc/hpux/gate.S b/arch/parisc/hpux/gate.S deleted file mode 100644 index 011468857e98..000000000000 --- a/arch/parisc/hpux/gate.S +++ /dev/null @@ -1,107 +0,0 @@ -/* - * - * Linux/PARISC Project (http://www.parisc-linux.org/) - * - * System call entry code Copyright (c) Matthew Wilcox 1999 <willy@bofh.ai> - * Licensed under the GNU GPL. - * thanks to Philipp Rumpf, Mike Shaver and various others - * sorry about the wall, puffin.. - */ - -#include <asm/assembly.h> -#include <asm/asm-offsets.h> -#include <asm/unistd.h> -#include <asm/errno.h> -#include <linux/linkage.h> - - .level LEVEL - .text - - .import hpux_call_table - .import hpux_syscall_exit,code - - .align PAGE_SIZE -ENTRY(hpux_gateway_page) - nop -#ifdef CONFIG_64BIT -#warning NEEDS WORK for 64-bit -#endif - ldw -64(%r30), %r29 ;! 8th argument - ldw -60(%r30), %r19 ;! 7th argument - ldw -56(%r30), %r20 ;! 6th argument - ldw -52(%r30), %r21 ;! 5th argument - gate .+8, %r0 /* become privileged */ - mtsp %r0,%sr4 /* get kernel space into sr4 */ - mtsp %r0,%sr5 /* get kernel space into sr5 */ - mtsp %r0,%sr6 /* get kernel space into sr6 */ - mfsp %sr7,%r1 /* save user sr7 */ - mtsp %r1,%sr3 /* and store it in sr3 */ - - mtctl %r30,%cr28 - mfctl %cr30,%r1 - xor %r1,%r30,%r30 /* ye olde xor trick */ - xor %r1,%r30,%r1 - xor %r1,%r30,%r30 - ldo TASK_SZ_ALGN+FRAME_SIZE(%r30),%r30 /* set up kernel stack */ - - /* N.B.: It is critical that we don't set sr7 to 0 until r30 - * contains a valid kernel stack pointer. It is also - * critical that we don't start using the kernel stack - * until after sr7 has been set to 0. - */ - - mtsp %r0,%sr7 /* get kernel space into sr7 */ - STREG %r1,TASK_PT_GR30-TASK_SZ_ALGN-FRAME_SIZE(%r30) /* save usp */ - ldo -TASK_SZ_ALGN-FRAME_SIZE(%r30),%r1 /* get task ptr in %r1 */ - - /* Save some registers for sigcontext and potential task - switch (see entry.S for the details of which ones are - saved/restored). TASK_PT_PSW is zeroed so we can see whether - a process is on a syscall or not. For an interrupt the real - PSW value is stored. This is needed for gdb and sys_ptrace. */ - STREG %r0, TASK_PT_PSW(%r1) - STREG %r2, TASK_PT_GR2(%r1) /* preserve rp */ - STREG %r19, TASK_PT_GR19(%r1) /* 7th argument */ - STREG %r20, TASK_PT_GR20(%r1) /* 6th argument */ - STREG %r21, TASK_PT_GR21(%r1) /* 5th argument */ - STREG %r22, TASK_PT_GR22(%r1) /* syscall # */ - STREG %r23, TASK_PT_GR23(%r1) /* 4th argument */ - STREG %r24, TASK_PT_GR24(%r1) /* 3rd argument */ - STREG %r25, TASK_PT_GR25(%r1) /* 2nd argument */ - STREG %r26, TASK_PT_GR26(%r1) /* 1st argument */ - STREG %r27, TASK_PT_GR27(%r1) /* user dp */ - STREG %r28, TASK_PT_GR28(%r1) /* return value 0 */ - STREG %r0, TASK_PT_ORIG_R28(%r1) /* don't prohibit restarts */ - STREG %r29, TASK_PT_GR29(%r1) /* 8th argument */ - STREG %r31, TASK_PT_GR31(%r1) /* preserve syscall return ptr */ - - ldo TASK_PT_FR0(%r1), %r27 /* save fpregs from the kernel */ - save_fp %r27 /* or potential task switch */ - - mfctl %cr11, %r27 /* i.e. SAR */ - STREG %r27, TASK_PT_SAR(%r1) - - loadgp - - stw %r21, -52(%r30) ;! 5th argument - stw %r20, -56(%r30) ;! 6th argument - stw %r19, -60(%r30) ;! 7th argument - stw %r29, -64(%r30) ;! 8th argument - - ldil L%hpux_call_table, %r21 - ldo R%hpux_call_table(%r21), %r21 - comiclr,>>= __NR_HPUX_syscalls, %r22, %r0 - b,n syscall_nosys - LDREGX %r22(%r21), %r21 - ldil L%hpux_syscall_exit,%r2 - be 0(%sr7,%r21) - ldo R%hpux_syscall_exit(%r2),%r2 - -syscall_nosys: - ldil L%hpux_syscall_exit,%r1 - be R%hpux_syscall_exit(%sr7,%r1) - ldo -ENOSYS(%r0),%r28 -ENDPROC(hpux_gateway_page) - - .align PAGE_SIZE -ENTRY(end_hpux_gateway_page) |