1 // SPDX-License-Identifier: GPL-2.0
3  * Instruction-patching support.
5  * Copyright (C) 2003 Hewlett-Packard Co
6  *	David Mosberger-Tang <davidm@hpl.hp.com>
19  * The 64-bit value in a "movl reg=value" is scattered between the two words of the bundle
32 	u64 *p = (u64 *) (insn_addr & -16);	/* mask out slot number */  in get_imm64()
40 		((p[1] & 0x000007f000000000UL) >> 36);  /*G*/  in get_imm64()
47 	u64 m0, m1, v0, v1, b0, b1, *b = (u64 *) (insn_addr & -16);  in ia64_patch()
48 #	define insn_mask ((1UL << 41) - 1)  in ia64_patch()
52 	shift = 5 + 41 * (insn_addr % 16); /* 5 bits of template, then 3 x 41-bit instructions */  in ia64_patch()
54 		m1 = mask << (shift - 64);  in ia64_patch()
55 		v1 = val << (shift - 64);  in ia64_patch()
57 		m0 = mask << shift; m1 = mask >> (64 - shift);  in ia64_patch()
58 		v0 = val  << shift; v1 = val >> (64 - shift);  in ia64_patch()
68 	   or slot 2 for a long (2-slot) instruction, occupying slots 1  in ia64_patch_imm64()
70   	insn_addr &= -16UL;  in ia64_patch_imm64()
72 		   0x01fffefe000UL, (  ((val & 0x8000000000000000UL) >> 27) /* bit 63 -> 36 */  in ia64_patch_imm64()
73 				     | ((val & 0x0000000000200000UL) <<  0) /* bit 21 -> 21 */  in ia64_patch_imm64()
74 				     | ((val & 0x00000000001f0000UL) <<  6) /* bit 16 -> 22 */  in ia64_patch_imm64()
75 				     | ((val & 0x000000000000ff80UL) << 20) /* bit  7 -> 27 */  in ia64_patch_imm64()
76 				     | ((val & 0x000000000000007fUL) << 13) /* bit  0 -> 13 */));  in ia64_patch_imm64()
84 	   or slot 2 for a long (2-slot) instruction, occupying slots 1  in ia64_patch_imm60()
86   	insn_addr &= -16UL;  in ia64_patch_imm60()
88 		   0x011ffffe000UL, (  ((val & 0x0800000000000000UL) >> 23) /* bit 59 -> 36 */  in ia64_patch_imm60()
89 				     | ((val & 0x00000000000fffffUL) << 13) /* bit  0 -> 13 */));  in ia64_patch_imm60()
132 		b = (u64 *)(ip & -16);  in ia64_patch_rse()
149 	need_workaround = (local_cpu_data->family == 0x1f && local_cpu_data->model == 0);  in ia64_patch_mckinley_e9()
199 				 (u64) (fsys_bubble_down - (ip & -16)) / 16);  in patch_brl_fsys_bubble_down()