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Alex Rønne Petersen
66d97267c7
This excludes all headers in /usr/include/dev because that directory is bonkers huge (18M). We can add these on an as-needed basis.
67 lines
1.8 KiB
C
Vendored
67 lines
1.8 KiB
C
Vendored
/* $OpenBSD: setjmp.h,v 1.6 2023/04/11 00:45:07 jsg Exp $ */
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/* $NetBSD: setjmp.h,v 1.2 2001/08/25 14:45:59 bjh21 Exp $ */
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/*
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* machine/setjmp.h: machine dependent setjmp-related information.
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*/
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#define _JBLEN 64 /* size, in longs, of a jmp_buf */
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/*
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* Description of the setjmp buffer
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*
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* word 0 magic number (dependant on creator)
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* 1 fpscr fpscr
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* 2 - 17 d8 - d15 vfp registers
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* 18 r13 register 13 (sp) XOR cookie0
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* 19 r14 register 14 (lr) XOR cookie1
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* 20 r4 register 4
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* 21 r5 register 5
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* 22 r6 register 6
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* 23 r7 register 7
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* 24 r8 register 8
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* 25 r9 register 9
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* 26 r10 register 10 (sl)
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* 27 r11 register 11 (fp)
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* 28 unused unused
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* 29 signal mask (dependant on magic)
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* 30 (con't)
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* 31 (con't)
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* 32 (con't)
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*
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* The magic number identifies the jmp_buf and
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* how the buffer was created as well as providing
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* a sanity check.
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*
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* A side note I should mention - please do not tamper
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* with the floating point fields. While they are
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* always saved and restored at the moment this cannot
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* be guaranteed especially if the compiler happens
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* to be generating soft-float code so no fp
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* registers will be used.
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*
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* Whilst this can be seen an encouraging people to
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* use the setjmp buffer in this way I think that it
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* is for the best then if changes occur compiles will
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* break rather than just having new builds falling over
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* mysteriously.
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*/
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#define _JB_MAGIC__SETJMP 0x4278f500
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#define _JB_MAGIC_SETJMP 0x4278f501
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/* Valid for all jmp_buf's */
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#define _JB_MAGIC 0
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#define _JB_REG_R4 20
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#define _JB_REG_R5 21
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#define _JB_REG_R6 22
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#define _JB_REG_R7 23
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#define _JB_REG_R8 24
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#define _JB_REG_R9 25
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#define _JB_REG_R10 26
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#define _JB_REG_R11 27
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/* Only valid with the _JB_MAGIC_SETJMP magic */
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#define _JB_SIGMASK 29 |