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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [IA64] remove linux/patch.c
# HG changeset patch
# User awilliam@xxxxxxxxxxx
# Node ID d18f8fd07fa2bd3856147b446b567064b130e742
# Parent 263901a2a9950be9bc5a2f13a3fd102b0dcba51e
[IA64] remove linux/patch.c
Removed, was unused.
Signed-off-by: Tristan Gingold <tristan.gingold@xxxxxxxx>
diff -r 263901a2a995 -r d18f8fd07fa2 xen/arch/ia64/linux/patch.c
--- a/xen/arch/ia64/linux/patch.c Tue Mar 21 16:13:07 2006
+++ /dev/null Tue Mar 21 16:18:28 2006
@@ -1,189 +0,0 @@
-/*
- * Instruction-patching support.
- *
- * Copyright (C) 2003 Hewlett-Packard Co
- * David Mosberger-Tang <davidm@xxxxxxxxxx>
- */
-#include <linux/init.h>
-#include <linux/string.h>
-
-#include <asm/patch.h>
-#include <asm/processor.h>
-#include <asm/sections.h>
-#include <asm/system.h>
-#include <asm/unistd.h>
-
-/*
- * This was adapted from code written by Tony Luck:
- *
- * The 64-bit value in a "movl reg=value" is scattered between the two words
of the bundle
- * like this:
- *
- * 6 6 5 4 3 2 1
- * 3210987654321098765432109876543210987654321098765432109876543210
- * ABBBBBBBBBBBBBBBBBBBBBBBCCCCCCCCCCCCCCCCCCDEEEEEFFFFFFFFFGGGGGGG
- *
- * CCCCCCCCCCCCCCCCCCxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
- * xxxxAFFFFFFFFFEEEEEDxGGGGGGGxxxxxxxxxxxxxBBBBBBBBBBBBBBBBBBBBBBB
- */
-static u64
-get_imm64 (u64 insn_addr)
-{
- u64 *p = (u64 *) (insn_addr & -16); /* mask out slot number */
-
- return ( (p[1] & 0x0800000000000000UL) << 4) | /*A*/
- ((p[1] & 0x00000000007fffffUL) << 40) | /*B*/
- ((p[0] & 0xffffc00000000000UL) >> 24) | /*C*/
- ((p[1] & 0x0000100000000000UL) >> 23) | /*D*/
- ((p[1] & 0x0003e00000000000UL) >> 29) | /*E*/
- ((p[1] & 0x07fc000000000000UL) >> 43) | /*F*/
- ((p[1] & 0x000007f000000000UL) >> 36); /*G*/
-}
-
-/* Patch instruction with "val" where "mask" has 1 bits. */
-void
-ia64_patch (u64 insn_addr, u64 mask, u64 val)
-{
- u64 m0, m1, v0, v1, b0, b1, *b = (u64 *) (insn_addr & -16);
-# define insn_mask ((1UL << 41) - 1)
- unsigned long shift;
-
- b0 = b[0]; b1 = b[1];
- shift = 5 + 41 * (insn_addr % 16); /* 5 bits of template, then 3 x
41-bit instructions */
- if (shift >= 64) {
- m1 = mask << (shift - 64);
- v1 = val << (shift - 64);
- } else {
- m0 = mask << shift; m1 = mask >> (64 - shift);
- v0 = val << shift; v1 = val >> (64 - shift);
- b[0] = (b0 & ~m0) | (v0 & m0);
- }
- b[1] = (b1 & ~m1) | (v1 & m1);
-}
-
-void
-ia64_patch_imm64 (u64 insn_addr, u64 val)
-{
- ia64_patch(insn_addr,
- 0x01fffefe000UL, ( ((val & 0x8000000000000000UL) >> 27) /*
bit 63 -> 36 */
- | ((val & 0x0000000000200000UL) << 0) /*
bit 21 -> 21 */
- | ((val & 0x00000000001f0000UL) << 6) /*
bit 16 -> 22 */
- | ((val & 0x000000000000ff80UL) << 20) /*
bit 7 -> 27 */
- | ((val & 0x000000000000007fUL) << 13) /*
bit 0 -> 13 */));
- ia64_patch(insn_addr - 1, 0x1ffffffffffUL, val >> 22);
-}
-
-void
-ia64_patch_imm60 (u64 insn_addr, u64 val)
-{
- ia64_patch(insn_addr,
- 0x011ffffe000UL, ( ((val & 0x0800000000000000UL) >> 23) /*
bit 59 -> 36 */
- | ((val & 0x00000000000fffffUL) << 13) /*
bit 0 -> 13 */));
- ia64_patch(insn_addr - 1, 0x1fffffffffcUL, val >> 18);
-}
-
-/*
- * We need sometimes to load the physical address of a kernel
- * object. Often we can convert the virtual address to physical
- * at execution time, but sometimes (either for performance reasons
- * or during error recovery) we cannot to this. Patch the marked
- * bundles to load the physical address.
- */
-void __init
-ia64_patch_vtop (unsigned long start, unsigned long end)
-{
- s32 *offp = (s32 *) start;
- u64 ip;
-
- while (offp < (s32 *) end) {
- ip = (u64) offp + *offp;
-
- /* replace virtual address with corresponding physical address:
*/
- ia64_patch_imm64(ip, ia64_tpa(get_imm64(ip)));
- ia64_fc((void *) ip);
- ++offp;
- }
- ia64_sync_i();
- ia64_srlz_i();
-}
-
-void
-ia64_patch_mckinley_e9 (unsigned long start, unsigned long end)
-{
- static int first_time = 1;
- int need_workaround;
- s32 *offp = (s32 *) start;
- u64 *wp;
-
- need_workaround = (local_cpu_data->family == 0x1f &&
local_cpu_data->model == 0);
-
- if (first_time) {
- first_time = 0;
- if (need_workaround)
- printk(KERN_INFO "Leaving McKinley Errata 9 workaround
enabled\n");
- else
- printk(KERN_INFO "McKinley Errata 9 workaround not
needed; "
- "disabling it\n");
- }
- if (need_workaround)
- return;
-
- while (offp < (s32 *) end) {
- wp = (u64 *) ia64_imva((char *) offp + *offp);
- wp[0] = 0x0000000100000000UL; /* nop.m 0; nop.i 0; nop.i 0 */
- wp[1] = 0x0004000000000200UL;
- wp[2] = 0x0000000100000011UL; /* nop.m 0; nop.i 0;
br.ret.sptk.many b6 */
- wp[3] = 0x0084006880000200UL;
- ia64_fc(wp); ia64_fc(wp + 2);
- ++offp;
- }
- ia64_sync_i();
- ia64_srlz_i();
-}
-
-static void
-patch_fsyscall_table (unsigned long start, unsigned long end)
-{
- extern unsigned long fsyscall_table[NR_syscalls];
- s32 *offp = (s32 *) start;
- u64 ip;
-
- while (offp < (s32 *) end) {
- ip = (u64) ia64_imva((char *) offp + *offp);
- ia64_patch_imm64(ip, (u64) fsyscall_table);
- ia64_fc((void *) ip);
- ++offp;
- }
- ia64_sync_i();
- ia64_srlz_i();
-}
-
-static void
-patch_brl_fsys_bubble_down (unsigned long start, unsigned long end)
-{
- extern char fsys_bubble_down[];
- s32 *offp = (s32 *) start;
- u64 ip;
-
- while (offp < (s32 *) end) {
- ip = (u64) offp + *offp;
- ia64_patch_imm60((u64) ia64_imva((void *) ip),
- (u64) (fsys_bubble_down - (ip & -16)) / 16);
- ia64_fc((void *) ip);
- ++offp;
- }
- ia64_sync_i();
- ia64_srlz_i();
-}
-
-void
-ia64_patch_gate (void)
-{
-# define START(name) ((unsigned long)
__start_gate_##name##_patchlist)
-# define END(name) ((unsigned long)__end_gate_##name##_patchlist)
-
- patch_fsyscall_table(START(fsyscall), END(fsyscall));
- patch_brl_fsys_bubble_down(START(brl_fsys_bubble_down),
END(brl_fsys_bubble_down));
- ia64_patch_vtop(START(vtop), END(vtop));
- ia64_patch_mckinley_e9(START(mckinley_e9), END(mckinley_e9));
-}
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