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/* This is a simple version of setjmp and longjmp for the PowerPC.
   Ian Lance Taylor, Cygnus Support, 9 Feb 1994.
   Modified by Jeff Johnston, Red Hat Inc. 2 Oct 2001. */
 
#include "ppc-asm.h"
 
FUNC_START(setjmp)
#ifdef __ALTIVEC__
        addi    3,3,15          # align Altivec to 16 byte boundary
        rlwinm  3,3,0,0,27
#else
        addi    3,3,7           # align to 8 byte boundary
        rlwinm  3,3,0,0,28
#endif
#if __SPE__
        /* If we are E500, then save 64-bit registers.  */
        evstdd  1,0(3)          # offset 0
        evstdd  2,8(3)          # offset 8
        evstdd  13,16(3)        # offset 16
        evstdd  14,24(3)        # offset 24
        evstdd  15,32(3)        # offset 32
        evstdd  16,40(3)        # offset 40
        evstdd  17,48(3)        # offset 48
        evstdd  18,56(3)        # offset 56
        evstdd  19,64(3)        # offset 64
        evstdd  20,72(3)        # offset 72
        evstdd  21,80(3)        # offset 80
        evstdd  22,88(3)        # offset 88
        evstdd  23,96(3)        # offset 96
        evstdd  24,104(3)       # offset 104
        evstdd  25,112(3)       # offset 112
        evstdd  26,120(3)       # offset 120
        evstdd  27,128(3)       # offset 128
        evstdd  28,136(3)       # offset 136
        evstdd  29,144(3)       # offset 144
        evstdd  30,152(3)       # offset 152
        evstdd  31,160(3)       # offset 160
 
        /* Add 164 to r3 to account for the amount of data we just
           stored.  Note that we are not adding 168 because the next
           store instruction uses an offset of 4.  */
        addi    3,3,164
#else
        stw     1,0(3)          # offset 0
        stwu    2,4(3)          # offset 4
        stwu    13,4(3)         # offset 8
        stwu    14,4(3)         # offset 12
        stwu    15,4(3)         # offset 16
        stwu    16,4(3)         # offset 20
        stwu    17,4(3)         # offset 24
        stwu    18,4(3)         # offset 28
        stwu    19,4(3)         # offset 32
        stwu    20,4(3)         # offset 36
        stwu    21,4(3)         # offset 40
        stwu    22,4(3)         # offset 44
        stwu    23,4(3)         # offset 48
        stwu    24,4(3)         # offset 52
        stwu    25,4(3)         # offset 56
        stwu    26,4(3)         # offset 60
        stwu    27,4(3)         # offset 64
        stwu    28,4(3)         # offset 68
        stwu    29,4(3)         # offset 72
        stwu    30,4(3)         # offset 76
        stwu    31,4(3)         # offset 80
#endif
 
        /* From this point on until the end of this function, add 84
           to the offset shown if __SPE__.  This difference comes from
           the fact that we save 21 64-bit registers instead of 21
           32-bit registers above.  */
        mflr    4
        stwu    4,4(3)          # offset 84
        mfcr    4
        stwu    4,4(3)          # offset 88
                                # one word pad to get floating point aligned on 8 byte boundary
 
        /* Check whether we need to save FPRs.  Checking __NO_FPRS__
           on its own would be enough for GCC 4.1 and above, but older
           compilers only define _SOFT_FLOAT, so check both.  */
#if !defined (__NO_FPRS__) && !defined (_SOFT_FLOAT)
        stfdu   14,8(3)         # offset 96
        stfdu   15,8(3)         # offset 104
        stfdu   16,8(3)         # offset 112
        stfdu   17,8(3)         # offset 120
        stfdu   18,8(3)         # offset 128
        stfdu   19,8(3)         # offset 136
        stfdu   20,8(3)         # offset 144
        stfdu   21,8(3)         # offset 152
        stfdu   22,8(3)         # offset 160
        stfdu   23,8(3)         # offset 168
        stfdu   24,8(3)         # offset 176
        stfdu   25,8(3)         # offset 184
        stfdu   26,8(3)         # offset 192
        stfdu   27,8(3)         # offset 200
        stfdu   28,8(3)         # offset 208
        stfdu   29,8(3)         # offset 216
        stfdu   30,8(3)         # offset 224
        stfdu   31,8(3)         # offset 232
#endif
 
        /* This requires a total of 21 * 4 + 18 * 8 + 4 + 4 + 4
           bytes == 60 * 4 bytes == 240 bytes.  */
 
#ifdef __ALTIVEC__
        /* save Altivec vrsave and vr20-vr31 registers */
        mfspr   4,256           # vrsave register
        stwu    4,16(3)         # offset 248
        addi    3,3,8
        stvx    20,0,3          # offset 256
        addi    3,3,16
        stvx    21,0,3          # offset 272
        addi    3,3,16
        stvx    22,0,3          # offset 288
        addi    3,3,16
        stvx    23,0,3          # offset 304
        addi    3,3,16
        stvx    24,0,3          # offset 320
        addi    3,3,16
        stvx    25,0,3          # offset 336
        addi    3,3,16
        stvx    26,0,3          # offset 352
        addi    3,3,16
        stvx    27,0,3          # offset 368
        addi    3,3,16
        stvx    28,0,3          # offset 384
        addi    3,3,16
        stvx    29,0,3          # offset 400
        addi    3,3,16
        stvx    30,0,3          # offset 416
        addi    3,3,16
        stvx    31,0,3          # offset 432
 
        /* This requires a total of 240 + 8 + 8 + 12 * 16 == 448 bytes. */
#endif
        li      3,0
        blr
FUNC_END(setjmp)
 
 
FUNC_START(longjmp)
#ifdef __ALTIVEC__
        addi    3,3,15          # align Altivec to 16 byte boundary
        rlwinm  3,3,0,0,27
#else
        addi    3,3,7           # align to 8 byte boundary
        rlwinm  3,3,0,0,28
#endif
#if __SPE__
        /* If we are E500, then restore 64-bit registers.  */
        evldd   1,0(3)          # offset 0
        evldd   2,8(3)          # offset 8
        evldd   13,16(3)        # offset 16
        evldd   14,24(3)        # offset 24
        evldd   15,32(3)        # offset 32
        evldd   16,40(3)        # offset 40
        evldd   17,48(3)        # offset 48
        evldd   18,56(3)        # offset 56
        evldd   19,64(3)        # offset 64
        evldd   20,72(3)        # offset 72
        evldd   21,80(3)        # offset 80
        evldd   22,88(3)        # offset 88
        evldd   23,96(3)        # offset 96
        evldd   24,104(3)       # offset 104
        evldd   25,112(3)       # offset 112
        evldd   26,120(3)       # offset 120
        evldd   27,128(3)       # offset 128
        evldd   28,136(3)       # offset 136
        evldd   29,144(3)       # offset 144
        evldd   30,152(3)       # offset 152
        evldd   31,160(3)       # offset 160
 
        /* Add 164 to r3 to account for the amount of data we just
           loaded.  Note that we are not adding 168 because the next
           load instruction uses an offset of 4.  */
        addi    3,3,164
#else
        lwz     1,0(3)          # offset 0
        lwzu    2,4(3)          # offset 4
        lwzu    13,4(3)         # offset 8
        lwzu    14,4(3)         # offset 12
        lwzu    15,4(3)         # offset 16
        lwzu    16,4(3)         # offset 20
        lwzu    17,4(3)         # offset 24
        lwzu    18,4(3)         # offset 28
        lwzu    19,4(3)         # offset 32
        lwzu    20,4(3)         # offset 36
        lwzu    21,4(3)         # offset 40
        lwzu    22,4(3)         # offset 44
        lwzu    23,4(3)         # offset 48
        lwzu    24,4(3)         # offset 52
        lwzu    25,4(3)         # offset 56
        lwzu    26,4(3)         # offset 60
        lwzu    27,4(3)         # offset 64
        lwzu    28,4(3)         # offset 68
        lwzu    29,4(3)         # offset 72
        lwzu    30,4(3)         # offset 76
        lwzu    31,4(3)         # offset 80
#endif
        /* From this point on until the end of this function, add 84
           to the offset shown if __SPE__.  This difference comes from
           the fact that we restore 21 64-bit registers instead of 21
           32-bit registers above.  */
        lwzu    5,4(3)          # offset 84
        mtlr    5
        lwzu    5,4(3)          # offset 88
        mtcrf   255,5
                                # one word pad to get floating point aligned on 8 byte boundary
 
        /* Check whether we need to restore FPRs.  Checking
           __NO_FPRS__ on its own would be enough for GCC 4.1 and
           above, but older compilers only define _SOFT_FLOAT, so
           check both.  */
#if !defined (__NO_FPRS__) && !defined (_SOFT_FLOAT)
        lfdu    14,8(3)         # offset 96
        lfdu    15,8(3)         # offset 104
        lfdu    16,8(3)         # offset 112
        lfdu    17,8(3)         # offset 120
        lfdu    18,8(3)         # offset 128
        lfdu    19,8(3)         # offset 136
        lfdu    20,8(3)         # offset 144
        lfdu    21,8(3)         # offset 152
        lfdu    22,8(3)         # offset 160
        lfdu    23,8(3)         # offset 168
        lfdu    24,8(3)         # offset 176
        lfdu    25,8(3)         # offset 184
        lfdu    26,8(3)         # offset 192
        lfdu    27,8(3)         # offset 200
        lfdu    28,8(3)         # offset 208
        lfdu    29,8(3)         # offset 216
        lfdu    30,8(3)         # offset 224
        lfdu    31,8(3)         # offset 232
#endif
 
#ifdef __ALTIVEC__
        /* restore Altivec vrsave and v20-v31 registers */
        lwzu    5,16(3)         # offset 248
        mtspr   256,5           # vrsave
        addi    3,3,8
        lvx     20,0,3          # offset 256
        addi    3,3,16
        lvx     21,0,3          # offset 272
        addi    3,3,16
        lvx     22,0,3          # offset 288
        addi    3,3,16
        lvx     23,0,3          # offset 304
        addi    3,3,16
        lvx     24,0,3          # offset 320
        addi    3,3,16
        lvx     25,0,3          # offset 336
        addi    3,3,16
        lvx     26,0,3          # offset 352
        addi    3,3,16
        lvx     27,0,3          # offset 368
        addi    3,3,16
        lvx     28,0,3          # offset 384
        addi    3,3,16
        lvx     29,0,3          # offset 400
        addi    3,3,16
        lvx     30,0,3          # offset 416
        addi    3,3,16
        lvx     31,0,3          # offset 432
#endif
 
        mr.     3,4
        bclr+   4,2
        li      3,1
        blr
FUNC_END(longjmp)

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[/] [openrisc/] [trunk/] [gnu-stable/] [newlib-1.18.0/] [newlib/] [libc/] [machine/] [powerpc/] [setjmp.S] - Blame information for rev 859

Line No.	Rev	Author	Line
1	207	jeremybenn	`/* This is a simple version of setjmp and longjmp for the PowerPC.`
2			`Ian Lance Taylor, Cygnus Support, 9 Feb 1994.`
3			`Modified by Jeff Johnston, Red Hat Inc. 2 Oct 2001. */`
4
5			`#include "ppc-asm.h"`
6
7			`FUNC_START(setjmp)`
8			`#ifdef __ALTIVEC__`
9			`addi 3,3,15 # align Altivec to 16 byte boundary`
10			`rlwinm 3,3,0,0,27`
11			`#else`
12			`addi 3,3,7 # align to 8 byte boundary`
13			`rlwinm 3,3,0,0,28`
14			`#endif`
15			`#if __SPE__`
16			`/* If we are E500, then save 64-bit registers. */`
17			`evstdd 1,0(3) # offset 0`
18			`evstdd 2,8(3) # offset 8`
19			`evstdd 13,16(3) # offset 16`
20			`evstdd 14,24(3) # offset 24`
21			`evstdd 15,32(3) # offset 32`
22			`evstdd 16,40(3) # offset 40`
23			`evstdd 17,48(3) # offset 48`
24			`evstdd 18,56(3) # offset 56`
25			`evstdd 19,64(3) # offset 64`
26			`evstdd 20,72(3) # offset 72`
27			`evstdd 21,80(3) # offset 80`
28			`evstdd 22,88(3) # offset 88`
29			`evstdd 23,96(3) # offset 96`
30			`evstdd 24,104(3) # offset 104`
31			`evstdd 25,112(3) # offset 112`
32			`evstdd 26,120(3) # offset 120`
33			`evstdd 27,128(3) # offset 128`
34			`evstdd 28,136(3) # offset 136`
35			`evstdd 29,144(3) # offset 144`
36			`evstdd 30,152(3) # offset 152`
37			`evstdd 31,160(3) # offset 160`
38
39			`/* Add 164 to r3 to account for the amount of data we just`
40			`stored. Note that we are not adding 168 because the next`
41			`store instruction uses an offset of 4. */`
42			`addi 3,3,164`
43			`#else`
44			`stw 1,0(3) # offset 0`
45			`stwu 2,4(3) # offset 4`
46			`stwu 13,4(3) # offset 8`
47			`stwu 14,4(3) # offset 12`
48			`stwu 15,4(3) # offset 16`
49			`stwu 16,4(3) # offset 20`
50			`stwu 17,4(3) # offset 24`
51			`stwu 18,4(3) # offset 28`
52			`stwu 19,4(3) # offset 32`
53			`stwu 20,4(3) # offset 36`
54			`stwu 21,4(3) # offset 40`
55			`stwu 22,4(3) # offset 44`
56			`stwu 23,4(3) # offset 48`
57			`stwu 24,4(3) # offset 52`
58			`stwu 25,4(3) # offset 56`
59			`stwu 26,4(3) # offset 60`
60			`stwu 27,4(3) # offset 64`
61			`stwu 28,4(3) # offset 68`
62			`stwu 29,4(3) # offset 72`
63			`stwu 30,4(3) # offset 76`
64			`stwu 31,4(3) # offset 80`
65			`#endif`
66
67			`/* From this point on until the end of this function, add 84`
68			`to the offset shown if __SPE__. This difference comes from`
69			`the fact that we save 21 64-bit registers instead of 21`
70			`32-bit registers above. */`
71			`mflr 4`
72			`stwu 4,4(3) # offset 84`
73			`mfcr 4`
74			`stwu 4,4(3) # offset 88`
75			`# one word pad to get floating point aligned on 8 byte boundary`
76
77			`/* Check whether we need to save FPRs. Checking __NO_FPRS__`
78			`on its own would be enough for GCC 4.1 and above, but older`
79			`compilers only define _SOFT_FLOAT, so check both. */`
80			`#if !defined (__NO_FPRS__) && !defined (_SOFT_FLOAT)`
81			`stfdu 14,8(3) # offset 96`
82			`stfdu 15,8(3) # offset 104`
83			`stfdu 16,8(3) # offset 112`
84			`stfdu 17,8(3) # offset 120`
85			`stfdu 18,8(3) # offset 128`
86			`stfdu 19,8(3) # offset 136`
87			`stfdu 20,8(3) # offset 144`
88			`stfdu 21,8(3) # offset 152`
89			`stfdu 22,8(3) # offset 160`
90			`stfdu 23,8(3) # offset 168`
91			`stfdu 24,8(3) # offset 176`
92			`stfdu 25,8(3) # offset 184`
93			`stfdu 26,8(3) # offset 192`
94			`stfdu 27,8(3) # offset 200`
95			`stfdu 28,8(3) # offset 208`
96			`stfdu 29,8(3) # offset 216`
97			`stfdu 30,8(3) # offset 224`
98			`stfdu 31,8(3) # offset 232`
99			`#endif`
100
101			`/* This requires a total of 21 * 4 + 18 * 8 + 4 + 4 + 4`
102			`bytes == 60 * 4 bytes == 240 bytes. */`
103
104			`#ifdef __ALTIVEC__`
105			`/* save Altivec vrsave and vr20-vr31 registers */`
106			`mfspr 4,256 # vrsave register`
107			`stwu 4,16(3) # offset 248`
108			`addi 3,3,8`
109			`stvx 20,0,3 # offset 256`
110			`addi 3,3,16`
111			`stvx 21,0,3 # offset 272`
112			`addi 3,3,16`
113			`stvx 22,0,3 # offset 288`
114			`addi 3,3,16`
115			`stvx 23,0,3 # offset 304`
116			`addi 3,3,16`
117			`stvx 24,0,3 # offset 320`
118			`addi 3,3,16`
119			`stvx 25,0,3 # offset 336`
120			`addi 3,3,16`
121			`stvx 26,0,3 # offset 352`
122			`addi 3,3,16`
123			`stvx 27,0,3 # offset 368`
124			`addi 3,3,16`
125			`stvx 28,0,3 # offset 384`
126			`addi 3,3,16`
127			`stvx 29,0,3 # offset 400`
128			`addi 3,3,16`
129			`stvx 30,0,3 # offset 416`
130			`addi 3,3,16`
131			`stvx 31,0,3 # offset 432`
132
133			`/* This requires a total of 240 + 8 + 8 + 12 * 16 == 448 bytes. */`
134			`#endif`
135			`li 3,0`
136			`blr`
137			`FUNC_END(setjmp)`
138
139
140			`FUNC_START(longjmp)`
141			`#ifdef __ALTIVEC__`
142			`addi 3,3,15 # align Altivec to 16 byte boundary`
143			`rlwinm 3,3,0,0,27`
144			`#else`
145			`addi 3,3,7 # align to 8 byte boundary`
146			`rlwinm 3,3,0,0,28`
147			`#endif`
148			`#if __SPE__`
149			`/* If we are E500, then restore 64-bit registers. */`
150			`evldd 1,0(3) # offset 0`
151			`evldd 2,8(3) # offset 8`
152			`evldd 13,16(3) # offset 16`
153			`evldd 14,24(3) # offset 24`
154			`evldd 15,32(3) # offset 32`
155			`evldd 16,40(3) # offset 40`
156			`evldd 17,48(3) # offset 48`
157			`evldd 18,56(3) # offset 56`
158			`evldd 19,64(3) # offset 64`
159			`evldd 20,72(3) # offset 72`
160			`evldd 21,80(3) # offset 80`
161			`evldd 22,88(3) # offset 88`
162			`evldd 23,96(3) # offset 96`
163			`evldd 24,104(3) # offset 104`
164			`evldd 25,112(3) # offset 112`
165			`evldd 26,120(3) # offset 120`
166			`evldd 27,128(3) # offset 128`
167			`evldd 28,136(3) # offset 136`
168			`evldd 29,144(3) # offset 144`
169			`evldd 30,152(3) # offset 152`
170			`evldd 31,160(3) # offset 160`
171
172			`/* Add 164 to r3 to account for the amount of data we just`
173			`loaded. Note that we are not adding 168 because the next`
174			`load instruction uses an offset of 4. */`
175			`addi 3,3,164`
176			`#else`
177			`lwz 1,0(3) # offset 0`
178			`lwzu 2,4(3) # offset 4`
179			`lwzu 13,4(3) # offset 8`
180			`lwzu 14,4(3) # offset 12`
181			`lwzu 15,4(3) # offset 16`
182			`lwzu 16,4(3) # offset 20`
183			`lwzu 17,4(3) # offset 24`
184			`lwzu 18,4(3) # offset 28`
185			`lwzu 19,4(3) # offset 32`
186			`lwzu 20,4(3) # offset 36`
187			`lwzu 21,4(3) # offset 40`
188			`lwzu 22,4(3) # offset 44`
189			`lwzu 23,4(3) # offset 48`
190			`lwzu 24,4(3) # offset 52`
191			`lwzu 25,4(3) # offset 56`
192			`lwzu 26,4(3) # offset 60`
193			`lwzu 27,4(3) # offset 64`
194			`lwzu 28,4(3) # offset 68`
195			`lwzu 29,4(3) # offset 72`
196			`lwzu 30,4(3) # offset 76`
197			`lwzu 31,4(3) # offset 80`
198			`#endif`
199			`/* From this point on until the end of this function, add 84`
200			`to the offset shown if __SPE__. This difference comes from`
201			`the fact that we restore 21 64-bit registers instead of 21`
202			`32-bit registers above. */`
203			`lwzu 5,4(3) # offset 84`
204			`mtlr 5`
205			`lwzu 5,4(3) # offset 88`
206			`mtcrf 255,5`
207			`# one word pad to get floating point aligned on 8 byte boundary`
208
209			`/* Check whether we need to restore FPRs. Checking`
210			`__NO_FPRS__ on its own would be enough for GCC 4.1 and`
211			`above, but older compilers only define _SOFT_FLOAT, so`
212			`check both. */`
213			`#if !defined (__NO_FPRS__) && !defined (_SOFT_FLOAT)`
214			`lfdu 14,8(3) # offset 96`
215			`lfdu 15,8(3) # offset 104`
216			`lfdu 16,8(3) # offset 112`
217			`lfdu 17,8(3) # offset 120`
218			`lfdu 18,8(3) # offset 128`
219			`lfdu 19,8(3) # offset 136`
220			`lfdu 20,8(3) # offset 144`
221			`lfdu 21,8(3) # offset 152`
222			`lfdu 22,8(3) # offset 160`
223			`lfdu 23,8(3) # offset 168`
224			`lfdu 24,8(3) # offset 176`
225			`lfdu 25,8(3) # offset 184`
226			`lfdu 26,8(3) # offset 192`
227			`lfdu 27,8(3) # offset 200`
228			`lfdu 28,8(3) # offset 208`
229			`lfdu 29,8(3) # offset 216`
230			`lfdu 30,8(3) # offset 224`
231			`lfdu 31,8(3) # offset 232`
232			`#endif`
233
234			`#ifdef __ALTIVEC__`
235			`/* restore Altivec vrsave and v20-v31 registers */`
236			`lwzu 5,16(3) # offset 248`
237			`mtspr 256,5 # vrsave`
238			`addi 3,3,8`
239			`lvx 20,0,3 # offset 256`
240			`addi 3,3,16`
241			`lvx 21,0,3 # offset 272`
242			`addi 3,3,16`
243			`lvx 22,0,3 # offset 288`
244			`addi 3,3,16`
245			`lvx 23,0,3 # offset 304`
246			`addi 3,3,16`
247			`lvx 24,0,3 # offset 320`
248			`addi 3,3,16`
249			`lvx 25,0,3 # offset 336`
250			`addi 3,3,16`
251			`lvx 26,0,3 # offset 352`
252			`addi 3,3,16`
253			`lvx 27,0,3 # offset 368`
254			`addi 3,3,16`
255			`lvx 28,0,3 # offset 384`
256			`addi 3,3,16`
257			`lvx 29,0,3 # offset 400`
258			`addi 3,3,16`
259			`lvx 30,0,3 # offset 416`
260			`addi 3,3,16`
261			`lvx 31,0,3 # offset 432`
262			`#endif`
263
264			`mr. 3,4`
265			`bclr+ 4,2`
266			`li 3,1`
267			`blr`
268			`FUNC_END(longjmp)`