60 lines
999 B
C
60 lines
999 B
C
#ifndef _LIBC_SETJMP_H
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#define _LIBC_SETJMP_H
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#include <sys/cdefs.h>
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#include <sys/types.h>
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__BEGIN_DECLS
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#ifdef __i386__
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/**
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* x86_32 (6 * 4):
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* - ebx
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* - esp
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* - ebp
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* - esi
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* - edi
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* - return address
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*/
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#define _jblen (6 * 4)
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#elif defined(__x86_64__)
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/**
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* x86_64 (8 * 8):
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* - rip, rbp, rsp, rbx, r12, r13, r14, r15
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*/
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#define _jblen (8 * 8)
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#elif defined(__arm__)
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/**
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* ARMv7 (11 * 4 + 8 * 8):
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* - r4 - r12, sp, lr
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* - d8-d15
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*/
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#define _jblen (11 * 4 + 8 * 8)
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#elif defined(__aarch64__)
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/**
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* ARMv8 (22 * 8):
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* - x19-x28, x29(fp), x30(lr), x31(sp), x4(alignment)
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* - d8-d15
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*/
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#define _jblen (22 * 8)
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#elif (defined(__riscv) && (__riscv_xlen == 64))
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/**
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* RISC-V 64bit (14 * 8):
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* - s0-s11, ra, sp
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*/
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#define _jblen (14 * 8)
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#endif
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struct __jmp_buf {
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char regs[_jblen];
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};
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typedef struct __jmp_buf jmp_buf[1];
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typedef struct __jmp_buf sigjmp_buf[1];
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extern int setjmp(jmp_buf);
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extern void longjmp(jmp_buf, int val);
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__END_DECLS
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#endif |