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# setjmp/longjmp for m32r.  The jmpbuf looks like this:
#
# Register      jmpbuf offset
# reserved      0x00
# R8            0x04
# R9            0x08
# R10           0x0c
# R11           0x10
# R12           0x14
# R13 (FP)      0x18
# R14 (LR)      0x1c
# R15 (SP)      0x20
# reserved      0x24
 
        .text
        .global setjmp
setjmp:
        ;addi   r0, #-4         ; commented out as first word is reserved
        ;st     r1, @+r0
        st      r8, @+r0
        st      r9, @+r0
        st      r10, @+r0
        st      r11, @+r0
        st      r12, @+r0
        st      r13, @+r0
        st      r14, @+r0
        st      r15, @+r0
 
# Return 0 to caller.
        ldi     r0, #0
        jmp     lr
 
        .global longjmp
longjmp:
        addi    r0, #4          ; first word is reserved
        ;ld     r1, @r0+
        ld      r8, @r0+
        ld      r9, @r0+
        ld      r10, @r0+
        ld      r11, @r0+
        ld      r12, @r0+
        ld      r13, @r0+
        ld      r2, @r0+        ; return address
        ld      r15, @r0+
 
# If caller attempted to return 0, return 1 instead.
 
        mv      r0, r1
        bnez    r0, .Lnonzero
        ldi     r0, #1
.Lnonzero:
        jmp     r2

Line No.	Rev	Author	Line
1	148	jeremybenn	`# setjmp/longjmp for m32r. The jmpbuf looks like this:`
2			`#`
3			`# Register jmpbuf offset`
4			`# reserved 0x00`
5			`# R8 0x04`
6			`# R9 0x08`
7			`# R10 0x0c`
8			`# R11 0x10`
9			`# R12 0x14`
10			`# R13 (FP) 0x18`
11			`# R14 (LR) 0x1c`
12			`# R15 (SP) 0x20`
13			`# reserved 0x24`
14
15			`.text`
16			`.global setjmp`
17			`setjmp:`
18			`;addi r0, #-4 ; commented out as first word is reserved`
19			`;st r1, @+r0`
20			`st r8, @+r0`
21			`st r9, @+r0`
22			`st r10, @+r0`
23			`st r11, @+r0`
24			`st r12, @+r0`
25			`st r13, @+r0`
26			`st r14, @+r0`
27			`st r15, @+r0`
28
29			`# Return 0 to caller.`
30			`ldi r0, #0`
31			`jmp lr`
32
33			`.global longjmp`
34			`longjmp:`
35			`addi r0, #4 ; first word is reserved`
36			`;ld r1, @r0+`
37			`ld r8, @r0+`
38			`ld r9, @r0+`
39			`ld r10, @r0+`
40			`ld r11, @r0+`
41			`ld r12, @r0+`
42			`ld r13, @r0+`
43			`ld r2, @r0+ ; return address`
44			`ld r15, @r0+`
45
46			`# If caller attempted to return 0, return 1 instead.`
47
48			`mv r0, r1`
49			`bnez r0, .Lnonzero`
50			`ldi r0, #1`
51			`.Lnonzero:`
52			`jmp r2`

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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.17.0/] [newlib/] [libc/] [machine/] [m32r/] [setjmp.S] - Blame information for rev 158