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/* This is a simple version of setjmp and longjmp for MIPS 32 and 64.
 
   Ian Lance Taylor, Cygnus Support, 13 May 1993.  */
 
#ifdef __mips16
/* This file contains 32 bit assembly code.  */
        .set nomips16
#endif
 
#define GPR_LAYOUT              \
        GPR_OFFSET ($16, 0);    \
        GPR_OFFSET ($17, 1);    \
        GPR_OFFSET ($18, 2);    \
        GPR_OFFSET ($19, 3);    \
        GPR_OFFSET ($20, 4);    \
        GPR_OFFSET ($21, 5);    \
        GPR_OFFSET ($22, 6);    \
        GPR_OFFSET ($23, 7);    \
        GPR_OFFSET ($29, 8);    \
        GPR_OFFSET ($30, 9);    \
        GPR_OFFSET ($31, 10)
 
#define NUM_GPRS_SAVED 11
 
#ifdef __mips_hard_float
#define FPR_LAYOUT              \
        FPR_OFFSET ($f20, 0);   \
        FPR_OFFSET ($f21, 1);   \
        FPR_OFFSET ($f22, 2);   \
        FPR_OFFSET ($f23, 3);   \
        FPR_OFFSET ($f24, 4);   \
        FPR_OFFSET ($f25, 5);   \
        FPR_OFFSET ($f26, 6);   \
        FPR_OFFSET ($f27, 7);   \
        FPR_OFFSET ($f28, 8);   \
        FPR_OFFSET ($f29, 9);   \
        FPR_OFFSET ($f30, 10);  \
        FPR_OFFSET ($f31, 11)
#else
#define FPR_LAYOUT
#endif
 
#ifdef __mips64
#define BYTES_PER_WORD 8
#define LOAD_GPR ld
#define LOAD_FPR ldc1
#define STORE_GPR sd
#define STORE_FPR sdc1
#else
#define BYTES_PER_WORD 4
#define LOAD_GPR lw
#define LOAD_FPR lwc1
#define STORE_GPR sw
#define STORE_FPR swc1
#endif
 
#define GPOFF(INDEX) (INDEX * BYTES_PER_WORD)
#define FPOFF(INDEX) ((INDEX + NUM_GPRS_SAVED) * BYTES_PER_WORD)
 
/* int setjmp (jmp_buf);  */
        .globl  setjmp
        .ent    setjmp
setjmp:
        .frame  $sp,0,$31
 
#define GPR_OFFSET(REG, INDEX) STORE_GPR REG,GPOFF(INDEX)($4)
#define FPR_OFFSET(REG, INDEX) STORE_FPR REG,FPOFF(INDEX)($4)
        GPR_LAYOUT
        FPR_LAYOUT
#undef GPR_OFFSET
#undef FPR_OFFSET
 
        move    $2,$0
        j       $31
 
        .end    setjmp
 
/* volatile void longjmp (jmp_buf, int);  */
        .globl  longjmp
        .ent    longjmp
longjmp:
        .frame  $sp,0,$31
 
#define GPR_OFFSET(REG, INDEX) LOAD_GPR REG,GPOFF(INDEX)($4)
#define FPR_OFFSET(REG, INDEX) LOAD_FPR REG,FPOFF(INDEX)($4)
        GPR_LAYOUT
        FPR_LAYOUT
#undef GPR_OFFSET
#undef FPR_OFFSET
 
        bne     $5,$0,1f
        li      $5,1
1:
        move    $2,$5
        j       $31
 
        .end longjmp

Line No.	Rev	Author	Line
1	9	jlechner	`/* This is a simple version of setjmp and longjmp for MIPS 32 and 64.`
2
3			`Ian Lance Taylor, Cygnus Support, 13 May 1993. */`
4
5			`#ifdef __mips16`
6			`/* This file contains 32 bit assembly code. */`
7			`.set nomips16`
8			`#endif`
9
10			`#define GPR_LAYOUT \`
11			`GPR_OFFSET ($16, 0); \`
12			`GPR_OFFSET ($17, 1); \`
13			`GPR_OFFSET ($18, 2); \`
14			`GPR_OFFSET ($19, 3); \`
15			`GPR_OFFSET ($20, 4); \`
16			`GPR_OFFSET ($21, 5); \`
17			`GPR_OFFSET ($22, 6); \`
18			`GPR_OFFSET ($23, 7); \`
19			`GPR_OFFSET ($29, 8); \`
20			`GPR_OFFSET ($30, 9); \`
21			`GPR_OFFSET ($31, 10)`
22
23			`#define NUM_GPRS_SAVED 11`
24
25			`#ifdef __mips_hard_float`
26			`#define FPR_LAYOUT \`
27			`FPR_OFFSET ($f20, 0); \`
28			`FPR_OFFSET ($f21, 1); \`
29			`FPR_OFFSET ($f22, 2); \`
30			`FPR_OFFSET ($f23, 3); \`
31			`FPR_OFFSET ($f24, 4); \`
32			`FPR_OFFSET ($f25, 5); \`
33			`FPR_OFFSET ($f26, 6); \`
34			`FPR_OFFSET ($f27, 7); \`
35			`FPR_OFFSET ($f28, 8); \`
36			`FPR_OFFSET ($f29, 9); \`
37			`FPR_OFFSET ($f30, 10); \`
38			`FPR_OFFSET ($f31, 11)`
39			`#else`
40			`#define FPR_LAYOUT`
41			`#endif`
42
43			`#ifdef __mips64`
44			`#define BYTES_PER_WORD 8`
45			`#define LOAD_GPR ld`
46			`#define LOAD_FPR ldc1`
47			`#define STORE_GPR sd`
48			`#define STORE_FPR sdc1`
49			`#else`
50			`#define BYTES_PER_WORD 4`
51			`#define LOAD_GPR lw`
52			`#define LOAD_FPR lwc1`
53			`#define STORE_GPR sw`
54			`#define STORE_FPR swc1`
55			`#endif`
56
57			`#define GPOFF(INDEX) (INDEX * BYTES_PER_WORD)`
58			`#define FPOFF(INDEX) ((INDEX + NUM_GPRS_SAVED) * BYTES_PER_WORD)`
59
60			`/* int setjmp (jmp_buf); */`
61			`.globl setjmp`
62			`.ent setjmp`
63			`setjmp:`
64			`.frame $sp,0,$31`
65
66			`#define GPR_OFFSET(REG, INDEX) STORE_GPR REG,GPOFF(INDEX)($4)`
67			`#define FPR_OFFSET(REG, INDEX) STORE_FPR REG,FPOFF(INDEX)($4)`
68			`GPR_LAYOUT`
69			`FPR_LAYOUT`
70			`#undef GPR_OFFSET`
71			`#undef FPR_OFFSET`
72
73			`move $2,$0`
74			`j $31`
75
76			`.end setjmp`
77
78			`/* volatile void longjmp (jmp_buf, int); */`
79			`.globl longjmp`
80			`.ent longjmp`
81			`longjmp:`
82			`.frame $sp,0,$31`
83
84			`#define GPR_OFFSET(REG, INDEX) LOAD_GPR REG,GPOFF(INDEX)($4)`
85			`#define FPR_OFFSET(REG, INDEX) LOAD_FPR REG,FPOFF(INDEX)($4)`
86			`GPR_LAYOUT`
87			`FPR_LAYOUT`
88			`#undef GPR_OFFSET`
89			`#undef FPR_OFFSET`
90
91			`bne $5,$0,1f`
92			`li $5,1`
93			`1:`
94			`move $2,$5`
95			`j $31`
96
97			`.end longjmp`

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[/] [scarts/] [trunk/] [toolchain/] [scarts-newlib/] [newlib-1.17.0/] [newlib/] [libc/] [machine/] [mips/] [setjmp.S] - Blame information for rev 9