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authorJeff Garzik <jgarzik@pobox.com>2005-10-28 18:48:57 -0400
committerJeff Garzik <jgarzik@pobox.com>2005-10-28 18:48:57 -0400
commit596c96ba06e5d56e72451e02f93f4e15e17458df (patch)
tree78bc640acacb8faeb621c51296e99dbb0533a147 /arch/parisc/kernel/real2.S
parentad18b0ea089928367185e13d11424aea91d4b41f (diff)
parent20731945ae743034353a88c307920d1f16cf8ac8 (diff)
Merge branch 'master'
Diffstat (limited to 'arch/parisc/kernel/real2.S')
-rw-r--r--arch/parisc/kernel/real2.S36
1 files changed, 16 insertions, 20 deletions
diff --git a/arch/parisc/kernel/real2.S b/arch/parisc/kernel/real2.S
index 8dd5defb7316..8c2859cca77e 100644
--- a/arch/parisc/kernel/real2.S
+++ b/arch/parisc/kernel/real2.S
@@ -7,8 +7,10 @@
7 * Copyright (C) 2000 Hewlett Packard (Paul Bame bame@puffin.external.hp.com) 7 * Copyright (C) 2000 Hewlett Packard (Paul Bame bame@puffin.external.hp.com)
8 * 8 *
9 */ 9 */
10#include <asm/assembly.h> 10#include <linux/config.h>
11
11#include <asm/psw.h> 12#include <asm/psw.h>
13#include <asm/assembly.h>
12 14
13 .section .bss 15 .section .bss
14 .export real_stack 16 .export real_stack
@@ -20,7 +22,7 @@ real32_stack:
20real64_stack: 22real64_stack:
21 .block 8192 23 .block 8192
22 24
23#ifdef __LP64__ 25#ifdef CONFIG_64BIT
24# define REG_SZ 8 26# define REG_SZ 8
25#else 27#else
26# define REG_SZ 4 28# define REG_SZ 4
@@ -50,7 +52,7 @@ save_cr_end:
50 52
51real32_call_asm: 53real32_call_asm:
52 STREG %rp, -RP_OFFSET(%sp) /* save RP */ 54 STREG %rp, -RP_OFFSET(%sp) /* save RP */
53#ifdef __LP64__ 55#ifdef CONFIG_64BIT
54 callee_save 56 callee_save
55 ldo 2*REG_SZ(%sp), %sp /* room for a couple more saves */ 57 ldo 2*REG_SZ(%sp), %sp /* room for a couple more saves */
56 STREG %r27, -1*REG_SZ(%sp) 58 STREG %r27, -1*REG_SZ(%sp)
@@ -77,7 +79,7 @@ real32_call_asm:
77 b,l save_control_regs,%r2 /* modifies r1, r2, r28 */ 79 b,l save_control_regs,%r2 /* modifies r1, r2, r28 */
78 nop 80 nop
79 81
80#ifdef __LP64__ 82#ifdef CONFIG_64BIT
81 rsm PSW_SM_W, %r0 /* go narrow */ 83 rsm PSW_SM_W, %r0 /* go narrow */
82#endif 84#endif
83 85
@@ -85,7 +87,7 @@ real32_call_asm:
85 bv 0(%r31) 87 bv 0(%r31)
86 nop 88 nop
87ric_ret: 89ric_ret:
88#ifdef __LP64__ 90#ifdef CONFIG_64BIT
89 ssm PSW_SM_W, %r0 /* go wide */ 91 ssm PSW_SM_W, %r0 /* go wide */
90#endif 92#endif
91 /* restore CRs before going virtual in case we page fault */ 93 /* restore CRs before going virtual in case we page fault */
@@ -97,7 +99,7 @@ ric_ret:
97 99
98 tovirt_r1 %sp 100 tovirt_r1 %sp
99 LDREG -REG_SZ(%sp), %sp /* restore SP */ 101 LDREG -REG_SZ(%sp), %sp /* restore SP */
100#ifdef __LP64__ 102#ifdef CONFIG_64BIT
101 LDREG -1*REG_SZ(%sp), %r27 103 LDREG -1*REG_SZ(%sp), %r27
102 LDREG -2*REG_SZ(%sp), %r29 104 LDREG -2*REG_SZ(%sp), %r29
103 ldo -2*REG_SZ(%sp), %sp 105 ldo -2*REG_SZ(%sp), %sp
@@ -143,24 +145,21 @@ restore_control_regs:
143/* rfi_virt2real() and rfi_real2virt() could perhaps be adapted for 145/* rfi_virt2real() and rfi_real2virt() could perhaps be adapted for
144 * more general-purpose use by the several places which need RFIs 146 * more general-purpose use by the several places which need RFIs
145 */ 147 */
146 .align 128
147 .text 148 .text
149 .align 128
148rfi_virt2real: 150rfi_virt2real:
149 /* switch to real mode... */ 151 /* switch to real mode... */
150 ssm 0,0 /* See "relied upon translation" */ 152 rsm PSW_SM_I,%r0
151 nop /* PA 2.0 Arch. F-5 */ 153 load32 PA(rfi_v2r_1), %r1
152 nop
153 nop
154 nop 154 nop
155 nop 155 nop
156 nop 156 nop
157 nop 157 nop
158 nop 158 nop
159 159
160 rsm (PSW_SM_Q|PSW_SM_I),%r0 /* disable Q & I bits to load iia queue */ 160 rsm PSW_SM_Q,%r0 /* disable Q & I bits to load iia queue */
161 mtctl %r0, %cr17 /* Clear IIASQ tail */ 161 mtctl %r0, %cr17 /* Clear IIASQ tail */
162 mtctl %r0, %cr17 /* Clear IIASQ head */ 162 mtctl %r0, %cr17 /* Clear IIASQ head */
163 load32 PA(rfi_v2r_1), %r1
164 mtctl %r1, %cr18 /* IIAOQ head */ 163 mtctl %r1, %cr18 /* IIAOQ head */
165 ldo 4(%r1), %r1 164 ldo 4(%r1), %r1
166 mtctl %r1, %cr18 /* IIAOQ tail */ 165 mtctl %r1, %cr18 /* IIAOQ tail */
@@ -184,10 +183,8 @@ rfi_v2r_1:
184 .text 183 .text
185 .align 128 184 .align 128
186rfi_real2virt: 185rfi_real2virt:
187 ssm 0,0 /* See "relied upon translation" */ 186 rsm PSW_SM_I,%r0
188 nop /* PA 2.0 Arch. F-5 */ 187 load32 (rfi_r2v_1), %r1
189 nop
190 nop
191 nop 188 nop
192 nop 189 nop
193 nop 190 nop
@@ -197,7 +194,6 @@ rfi_real2virt:
197 rsm PSW_SM_Q,%r0 /* disable Q bit to load iia queue */ 194 rsm PSW_SM_Q,%r0 /* disable Q bit to load iia queue */
198 mtctl %r0, %cr17 /* Clear IIASQ tail */ 195 mtctl %r0, %cr17 /* Clear IIASQ tail */
199 mtctl %r0, %cr17 /* Clear IIASQ head */ 196 mtctl %r0, %cr17 /* Clear IIASQ head */
200 load32 (rfi_r2v_1), %r1
201 mtctl %r1, %cr18 /* IIAOQ head */ 197 mtctl %r1, %cr18 /* IIAOQ head */
202 ldo 4(%r1), %r1 198 ldo 4(%r1), %r1
203 mtctl %r1, %cr18 /* IIAOQ tail */ 199 mtctl %r1, %cr18 /* IIAOQ tail */
@@ -218,7 +214,7 @@ rfi_r2v_1:
218 bv 0(%r2) 214 bv 0(%r2)
219 nop 215 nop
220 216
221#ifdef __LP64__ 217#ifdef CONFIG_64BIT
222 218
223/************************ 64-bit real-mode calls ***********************/ 219/************************ 64-bit real-mode calls ***********************/
224/* This is only usable in wide kernels right now and will probably stay so */ 220/* This is only usable in wide kernels right now and will probably stay so */
@@ -296,7 +292,7 @@ pc_in_user_space:
296 ** comparing function pointers. 292 ** comparing function pointers.
297 */ 293 */
298__canonicalize_funcptr_for_compare: 294__canonicalize_funcptr_for_compare:
299#ifdef __LP64__ 295#ifdef CONFIG_64BIT
300 bve (%r2) 296 bve (%r2)
301#else 297#else
302 bv %r0(%r2) 298 bv %r0(%r2)