Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 116 insertions, 0 deletions

diff --git a/arch/parisc/hpux/gate.S b/arch/parisc/hpux/gate.S
new file mode 100644
index 000000000000..2680a1c0fa77
--- /dev/null
+++ b/arch/parisc/hpux/gate.S
@@ -0,0 +1,116 @@
+/*
+ *
+ * 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/offsets.h>
+#include <asm/unistd.h>
+#include <asm/errno.h>
+
+#ifdef __LP64__
+	.level          2.0w
+#else
+	.level		1.1
+#endif
+	.text
+
+#ifdef __LP64__
+#define FRAME_SIZE	128
+#else
+#define FRAME_SIZE	64
+#endif
+	.import hpux_call_table
+	.import hpux_syscall_exit,code
+	.export hpux_gateway_page
+
+	.align 4096
+hpux_gateway_page:
+	nop
+#ifdef __LP64__
+#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   %r28, TASK_PT_ORIG_R28(%r1)     /* return value 0 (saved for signals) */
+	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
+	ldwx,s	%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
+
+	.align 4096
+	.export end_hpux_gateway_page
+end_hpux_gateway_page: