diff options
author | Ingo Molnar <mingo@elte.hu> | 2008-06-16 05:24:00 -0400 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-06-16 05:24:00 -0400 |
commit | 6d72b7952fa7d7c61d021398970c29afde6a4443 (patch) | |
tree | 31c00be8e2837e2db2e62c694421a93a9f4c79d7 /arch/ia64/kernel/minstate.h | |
parent | 6360b1fbb4a939efd34fc770c2ebd927c55506e0 (diff) | |
parent | 066519068ad2fbe98c7f45552b1f592903a9c8c8 (diff) |
Merge branch 'linus' into core/rodata
Diffstat (limited to 'arch/ia64/kernel/minstate.h')
-rw-r--r-- | arch/ia64/kernel/minstate.h | 46 |
1 files changed, 42 insertions, 4 deletions
diff --git a/arch/ia64/kernel/minstate.h b/arch/ia64/kernel/minstate.h index 7c548ac52bbc..74b6d670aaef 100644 --- a/arch/ia64/kernel/minstate.h +++ b/arch/ia64/kernel/minstate.h | |||
@@ -15,6 +15,9 @@ | |||
15 | #define ACCOUNT_SYS_ENTER | 15 | #define ACCOUNT_SYS_ENTER |
16 | #endif | 16 | #endif |
17 | 17 | ||
18 | .section ".data.patch.rse", "a" | ||
19 | .previous | ||
20 | |||
18 | /* | 21 | /* |
19 | * DO_SAVE_MIN switches to the kernel stacks (if necessary) and saves | 22 | * DO_SAVE_MIN switches to the kernel stacks (if necessary) and saves |
20 | * the minimum state necessary that allows us to turn psr.ic back | 23 | * the minimum state necessary that allows us to turn psr.ic back |
@@ -40,7 +43,7 @@ | |||
40 | * Note that psr.ic is NOT turned on by this macro. This is so that | 43 | * Note that psr.ic is NOT turned on by this macro. This is so that |
41 | * we can pass interruption state as arguments to a handler. | 44 | * we can pass interruption state as arguments to a handler. |
42 | */ | 45 | */ |
43 | #define DO_SAVE_MIN(COVER,SAVE_IFS,EXTRA) \ | 46 | #define DO_SAVE_MIN(COVER,SAVE_IFS,EXTRA,WORKAROUND) \ |
44 | mov r16=IA64_KR(CURRENT); /* M */ \ | 47 | mov r16=IA64_KR(CURRENT); /* M */ \ |
45 | mov r27=ar.rsc; /* M */ \ | 48 | mov r27=ar.rsc; /* M */ \ |
46 | mov r20=r1; /* A */ \ | 49 | mov r20=r1; /* A */ \ |
@@ -87,6 +90,7 @@ | |||
87 | tbit.nz p15,p0=r29,IA64_PSR_I_BIT; \ | 90 | tbit.nz p15,p0=r29,IA64_PSR_I_BIT; \ |
88 | mov r29=b0 \ | 91 | mov r29=b0 \ |
89 | ;; \ | 92 | ;; \ |
93 | WORKAROUND; \ | ||
90 | adds r16=PT(R8),r1; /* initialize first base pointer */ \ | 94 | adds r16=PT(R8),r1; /* initialize first base pointer */ \ |
91 | adds r17=PT(R9),r1; /* initialize second base pointer */ \ | 95 | adds r17=PT(R9),r1; /* initialize second base pointer */ \ |
92 | (pKStk) mov r18=r0; /* make sure r18 isn't NaT */ \ | 96 | (pKStk) mov r18=r0; /* make sure r18 isn't NaT */ \ |
@@ -206,6 +210,40 @@ | |||
206 | st8 [r25]=r10; /* ar.ssd */ \ | 210 | st8 [r25]=r10; /* ar.ssd */ \ |
207 | ;; | 211 | ;; |
208 | 212 | ||
209 | #define SAVE_MIN_WITH_COVER DO_SAVE_MIN(cover, mov r30=cr.ifs,) | 213 | #define RSE_WORKAROUND \ |
210 | #define SAVE_MIN_WITH_COVER_R19 DO_SAVE_MIN(cover, mov r30=cr.ifs, mov r15=r19) | 214 | (pUStk) extr.u r17=r18,3,6; \ |
211 | #define SAVE_MIN DO_SAVE_MIN( , mov r30=r0, ) | 215 | (pUStk) sub r16=r18,r22; \ |
216 | [1:](pKStk) br.cond.sptk.many 1f; \ | ||
217 | .xdata4 ".data.patch.rse",1b-. \ | ||
218 | ;; \ | ||
219 | cmp.ge p6,p7 = 33,r17; \ | ||
220 | ;; \ | ||
221 | (p6) mov r17=0x310; \ | ||
222 | (p7) mov r17=0x308; \ | ||
223 | ;; \ | ||
224 | cmp.leu p1,p0=r16,r17; \ | ||
225 | (p1) br.cond.sptk.many 1f; \ | ||
226 | dep.z r17=r26,0,62; \ | ||
227 | movl r16=2f; \ | ||
228 | ;; \ | ||
229 | mov ar.pfs=r17; \ | ||
230 | dep r27=r0,r27,16,14; \ | ||
231 | mov b0=r16; \ | ||
232 | ;; \ | ||
233 | br.ret.sptk b0; \ | ||
234 | ;; \ | ||
235 | 2: \ | ||
236 | mov ar.rsc=r0 \ | ||
237 | ;; \ | ||
238 | flushrs; \ | ||
239 | ;; \ | ||
240 | mov ar.bspstore=r22 \ | ||
241 | ;; \ | ||
242 | mov r18=ar.bsp; \ | ||
243 | ;; \ | ||
244 | 1: \ | ||
245 | .pred.rel "mutex", pKStk, pUStk | ||
246 | |||
247 | #define SAVE_MIN_WITH_COVER DO_SAVE_MIN(cover, mov r30=cr.ifs, , RSE_WORKAROUND) | ||
248 | #define SAVE_MIN_WITH_COVER_R19 DO_SAVE_MIN(cover, mov r30=cr.ifs, mov r15=r19, RSE_WORKAROUND) | ||
249 | #define SAVE_MIN DO_SAVE_MIN( , mov r30=r0, , ) | ||