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authorPaul Mackerras <paulus@samba.org>2005-10-12 00:43:32 -0400
committerPaul Mackerras <paulus@samba.org>2005-10-12 00:43:32 -0400
commitb6ec995a21a9428aef620b5adf46d047a18d88b8 (patch)
tree6719121e6605cbca524b687f47336b9bbf3b8d41 /arch/sparc64/kernel/entry.S
parent3a5f8c5f788d68e325d9fe3c26f4df5a5aee838a (diff)
parentda64c6ee6bb71bfb3f09d9bb89ce1aa4b1ee7e89 (diff)
Merge from Linus' tree
Diffstat (limited to 'arch/sparc64/kernel/entry.S')
-rw-r--r--arch/sparc64/kernel/entry.S82
1 files changed, 29 insertions, 53 deletions
diff --git a/arch/sparc64/kernel/entry.S b/arch/sparc64/kernel/entry.S
index 2879b1072921..11a848402fb1 100644
--- a/arch/sparc64/kernel/entry.S
+++ b/arch/sparc64/kernel/entry.S
@@ -33,7 +33,7 @@
33 /* This is trivial with the new code... */ 33 /* This is trivial with the new code... */
34 .globl do_fpdis 34 .globl do_fpdis
35do_fpdis: 35do_fpdis:
36 sethi %hi(TSTATE_PEF), %g4 ! IEU0 36 sethi %hi(TSTATE_PEF), %g4
37 rdpr %tstate, %g5 37 rdpr %tstate, %g5
38 andcc %g5, %g4, %g0 38 andcc %g5, %g4, %g0
39 be,pt %xcc, 1f 39 be,pt %xcc, 1f
@@ -50,18 +50,18 @@ do_fpdis:
50 add %g0, %g0, %g0 50 add %g0, %g0, %g0
51 ba,a,pt %xcc, rtrap_clr_l6 51 ba,a,pt %xcc, rtrap_clr_l6
52 52
531: ldub [%g6 + TI_FPSAVED], %g5 ! Load Group 531: ldub [%g6 + TI_FPSAVED], %g5
54 wr %g0, FPRS_FEF, %fprs ! LSU Group+4bubbles 54 wr %g0, FPRS_FEF, %fprs
55 andcc %g5, FPRS_FEF, %g0 ! IEU1 Group 55 andcc %g5, FPRS_FEF, %g0
56 be,a,pt %icc, 1f ! CTI 56 be,a,pt %icc, 1f
57 clr %g7 ! IEU0 57 clr %g7
58 ldx [%g6 + TI_GSR], %g7 ! Load Group 58 ldx [%g6 + TI_GSR], %g7
591: andcc %g5, FPRS_DL, %g0 ! IEU1 591: andcc %g5, FPRS_DL, %g0
60 bne,pn %icc, 2f ! CTI 60 bne,pn %icc, 2f
61 fzero %f0 ! FPA 61 fzero %f0
62 andcc %g5, FPRS_DU, %g0 ! IEU1 Group 62 andcc %g5, FPRS_DU, %g0
63 bne,pn %icc, 1f ! CTI 63 bne,pn %icc, 1f
64 fzero %f2 ! FPA 64 fzero %f2
65 faddd %f0, %f2, %f4 65 faddd %f0, %f2, %f4
66 fmuld %f0, %f2, %f6 66 fmuld %f0, %f2, %f6
67 faddd %f0, %f2, %f8 67 faddd %f0, %f2, %f8
@@ -97,15 +97,17 @@ do_fpdis:
97 faddd %f0, %f2, %f4 97 faddd %f0, %f2, %f4
98 fmuld %f0, %f2, %f6 98 fmuld %f0, %f2, %f6
99 ldxa [%g3] ASI_DMMU, %g5 99 ldxa [%g3] ASI_DMMU, %g5
100cplus_fptrap_insn_1: 100 sethi %hi(sparc64_kern_sec_context), %g2
101 sethi %hi(0), %g2 101 ldx [%g2 + %lo(sparc64_kern_sec_context)], %g2
102 stxa %g2, [%g3] ASI_DMMU 102 stxa %g2, [%g3] ASI_DMMU
103 membar #Sync 103 membar #Sync
104 add %g6, TI_FPREGS + 0xc0, %g2 104 add %g6, TI_FPREGS + 0xc0, %g2
105 faddd %f0, %f2, %f8 105 faddd %f0, %f2, %f8
106 fmuld %f0, %f2, %f10 106 fmuld %f0, %f2, %f10
107 ldda [%g1] ASI_BLK_S, %f32 ! grrr, where is ASI_BLK_NUCLEUS 8-( 107 membar #Sync
108 ldda [%g1] ASI_BLK_S, %f32
108 ldda [%g2] ASI_BLK_S, %f48 109 ldda [%g2] ASI_BLK_S, %f48
110 membar #Sync
109 faddd %f0, %f2, %f12 111 faddd %f0, %f2, %f12
110 fmuld %f0, %f2, %f14 112 fmuld %f0, %f2, %f14
111 faddd %f0, %f2, %f16 113 faddd %f0, %f2, %f16
@@ -116,7 +118,6 @@ cplus_fptrap_insn_1:
116 fmuld %f0, %f2, %f26 118 fmuld %f0, %f2, %f26
117 faddd %f0, %f2, %f28 119 faddd %f0, %f2, %f28
118 fmuld %f0, %f2, %f30 120 fmuld %f0, %f2, %f30
119 membar #Sync
120 b,pt %xcc, fpdis_exit 121 b,pt %xcc, fpdis_exit
121 nop 122 nop
1222: andcc %g5, FPRS_DU, %g0 1232: andcc %g5, FPRS_DU, %g0
@@ -126,15 +127,17 @@ cplus_fptrap_insn_1:
126 fzero %f34 127 fzero %f34
127 ldxa [%g3] ASI_DMMU, %g5 128 ldxa [%g3] ASI_DMMU, %g5
128 add %g6, TI_FPREGS, %g1 129 add %g6, TI_FPREGS, %g1
129cplus_fptrap_insn_2: 130 sethi %hi(sparc64_kern_sec_context), %g2
130 sethi %hi(0), %g2 131 ldx [%g2 + %lo(sparc64_kern_sec_context)], %g2
131 stxa %g2, [%g3] ASI_DMMU 132 stxa %g2, [%g3] ASI_DMMU
132 membar #Sync 133 membar #Sync
133 add %g6, TI_FPREGS + 0x40, %g2 134 add %g6, TI_FPREGS + 0x40, %g2
134 faddd %f32, %f34, %f36 135 faddd %f32, %f34, %f36
135 fmuld %f32, %f34, %f38 136 fmuld %f32, %f34, %f38
136 ldda [%g1] ASI_BLK_S, %f0 ! grrr, where is ASI_BLK_NUCLEUS 8-( 137 membar #Sync
138 ldda [%g1] ASI_BLK_S, %f0
137 ldda [%g2] ASI_BLK_S, %f16 139 ldda [%g2] ASI_BLK_S, %f16
140 membar #Sync
138 faddd %f32, %f34, %f40 141 faddd %f32, %f34, %f40
139 fmuld %f32, %f34, %f42 142 fmuld %f32, %f34, %f42
140 faddd %f32, %f34, %f44 143 faddd %f32, %f34, %f44
@@ -147,18 +150,18 @@ cplus_fptrap_insn_2:
147 fmuld %f32, %f34, %f58 150 fmuld %f32, %f34, %f58
148 faddd %f32, %f34, %f60 151 faddd %f32, %f34, %f60
149 fmuld %f32, %f34, %f62 152 fmuld %f32, %f34, %f62
150 membar #Sync
151 ba,pt %xcc, fpdis_exit 153 ba,pt %xcc, fpdis_exit
152 nop 154 nop
1533: mov SECONDARY_CONTEXT, %g3 1553: mov SECONDARY_CONTEXT, %g3
154 add %g6, TI_FPREGS, %g1 156 add %g6, TI_FPREGS, %g1
155 ldxa [%g3] ASI_DMMU, %g5 157 ldxa [%g3] ASI_DMMU, %g5
156cplus_fptrap_insn_3: 158 sethi %hi(sparc64_kern_sec_context), %g2
157 sethi %hi(0), %g2 159 ldx [%g2 + %lo(sparc64_kern_sec_context)], %g2
158 stxa %g2, [%g3] ASI_DMMU 160 stxa %g2, [%g3] ASI_DMMU
159 membar #Sync 161 membar #Sync
160 mov 0x40, %g2 162 mov 0x40, %g2
161 ldda [%g1] ASI_BLK_S, %f0 ! grrr, where is ASI_BLK_NUCLEUS 8-( 163 membar #Sync
164 ldda [%g1] ASI_BLK_S, %f0
162 ldda [%g1 + %g2] ASI_BLK_S, %f16 165 ldda [%g1 + %g2] ASI_BLK_S, %f16
163 add %g1, 0x80, %g1 166 add %g1, 0x80, %g1
164 ldda [%g1] ASI_BLK_S, %f32 167 ldda [%g1] ASI_BLK_S, %f32
@@ -319,8 +322,8 @@ do_fptrap_after_fsr:
319 stx %g3, [%g6 + TI_GSR] 322 stx %g3, [%g6 + TI_GSR]
320 mov SECONDARY_CONTEXT, %g3 323 mov SECONDARY_CONTEXT, %g3
321 ldxa [%g3] ASI_DMMU, %g5 324 ldxa [%g3] ASI_DMMU, %g5
322cplus_fptrap_insn_4: 325 sethi %hi(sparc64_kern_sec_context), %g2
323 sethi %hi(0), %g2 326 ldx [%g2 + %lo(sparc64_kern_sec_context)], %g2
324 stxa %g2, [%g3] ASI_DMMU 327 stxa %g2, [%g3] ASI_DMMU
325 membar #Sync 328 membar #Sync
326 add %g6, TI_FPREGS, %g2 329 add %g6, TI_FPREGS, %g2
@@ -341,33 +344,6 @@ cplus_fptrap_insn_4:
341 ba,pt %xcc, etrap 344 ba,pt %xcc, etrap
342 wr %g0, 0, %fprs 345 wr %g0, 0, %fprs
343 346
344cplus_fptrap_1:
345 sethi %hi(CTX_CHEETAH_PLUS_CTX0), %g2
346
347 .globl cheetah_plus_patch_fpdis
348cheetah_plus_patch_fpdis:
349 /* We configure the dTLB512_0 for 4MB pages and the
350 * dTLB512_1 for 8K pages when in context zero.
351 */
352 sethi %hi(cplus_fptrap_1), %o0
353 lduw [%o0 + %lo(cplus_fptrap_1)], %o1
354
355 set cplus_fptrap_insn_1, %o2
356 stw %o1, [%o2]
357 flush %o2
358 set cplus_fptrap_insn_2, %o2
359 stw %o1, [%o2]
360 flush %o2
361 set cplus_fptrap_insn_3, %o2
362 stw %o1, [%o2]
363 flush %o2
364 set cplus_fptrap_insn_4, %o2
365 stw %o1, [%o2]
366 flush %o2
367
368 retl
369 nop
370
371 /* The registers for cross calls will be: 347 /* The registers for cross calls will be:
372 * 348 *
373 * DATA 0: [low 32-bits] Address of function to call, jmp to this 349 * DATA 0: [low 32-bits] Address of function to call, jmp to this
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