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authorTony Luck <tony.luck@intel.com>2005-10-28 14:33:50 -0700
committerTony Luck <tony.luck@intel.com>2005-10-28 14:33:50 -0700
commit9acd3fa2e10f4e5b093ddf93af8f23cc9bdbd621 (patch)
treefefb8d52a8ef074d59f2b342d18b4372dde8952c /arch/ia64
parent5a2b1722e1051b84485a77006abe9b929aedef32 (diff)
parent9c184a073bfd650cc791956d6ca79725bb682716 (diff)
Pull asm-slot-fix into release branch
Diffstat (limited to 'arch/ia64')
-rw-r--r--arch/ia64/kernel/patch.c16
1 files changed, 12 insertions, 4 deletions
diff --git a/arch/ia64/kernel/patch.c b/arch/ia64/kernel/patch.c
index 367804a605fa..6a4ac7d70b35 100644
--- a/arch/ia64/kernel/patch.c
+++ b/arch/ia64/kernel/patch.c
@@ -64,22 +64,30 @@ ia64_patch (u64 insn_addr, u64 mask, u64 val)
void
ia64_patch_imm64 (u64 insn_addr, u64 val)
{
- ia64_patch(insn_addr,
+ /* The assembler may generate offset pointing to either slot 1
+ or slot 2 for a long (2-slot) instruction, occupying slots 1
+ and 2. */
+ insn_addr &= -16UL;
+ ia64_patch(insn_addr + 2,
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);
+ ia64_patch(insn_addr + 1, 0x1ffffffffffUL, val >> 22);
}
void
ia64_patch_imm60 (u64 insn_addr, u64 val)
{
- ia64_patch(insn_addr,
+ /* The assembler may generate offset pointing to either slot 1
+ or slot 2 for a long (2-slot) instruction, occupying slots 1
+ and 2. */
+ insn_addr &= -16UL;
+ ia64_patch(insn_addr + 2,
0x011ffffe000UL, ( ((val & 0x0800000000000000UL) >> 23) /* bit 59 -> 36 */
| ((val & 0x00000000000fffffUL) << 13) /* bit 0 -> 13 */));
- ia64_patch(insn_addr - 1, 0x1fffffffffcUL, val >> 18);
+ ia64_patch(insn_addr + 1, 0x1fffffffffcUL, val >> 18);
}
/*