5842bd683f
Suggested by: jmallett Reviewed by: bdrewery, jmallett Differential Revision: https://reviews.freebsd.org/D5123
99 lines
2.8 KiB
C
99 lines
2.8 KiB
C
/*-
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* Copyright (c) 2015 Nuxi, https://nuxi.nl/
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/ptrace.h>
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#include <machine/psl.h>
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#include <errno.h>
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#include <stdio.h>
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#include <sysdecode.h>
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#include "cloudabi.h"
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#include "truss.h"
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static int
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amd64_cloudabi64_fetch_args(struct trussinfo *trussinfo, unsigned int narg)
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{
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struct current_syscall *cs;
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struct reg regs;
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lwpid_t tid;
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tid = trussinfo->curthread->tid;
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if (ptrace(PT_GETREGS, tid, (caddr_t)®s, 0) == -1) {
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fprintf(trussinfo->outfile, "-- CANNOT READ REGISTERS --\n");
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return (-1);
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}
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cs = &trussinfo->curthread->cs;
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if (narg >= 1)
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cs->args[0] = regs.r_rdi;
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if (narg >= 2)
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cs->args[1] = regs.r_rsi;
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if (narg >= 3)
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cs->args[2] = regs.r_rdx;
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if (narg >= 4)
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cs->args[3] = regs.r_rcx;
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if (narg >= 5)
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cs->args[4] = regs.r_r8;
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if (narg >= 6)
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cs->args[5] = regs.r_r9;
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return (0);
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}
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static int
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amd64_cloudabi64_fetch_retval(struct trussinfo *trussinfo, long *retval,
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int *errorp)
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{
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struct reg regs;
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lwpid_t tid;
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tid = trussinfo->curthread->tid;
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if (ptrace(PT_GETREGS, tid, (caddr_t)®s, 0) == -1) {
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fprintf(trussinfo->outfile, "-- CANNOT READ REGISTERS --\n");
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return (-1);
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}
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retval[0] = regs.r_rax;
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retval[1] = regs.r_rdx;
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*errorp = (regs.r_rflags & PSL_C) != 0;
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if (*errorp)
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retval[0] = cloudabi_convert_errno(retval[0]);
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return (0);
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}
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static struct procabi amd64_cloudabi64 = {
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"CloudABI ELF64",
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SYSDECODE_ABI_CLOUDABI64,
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amd64_cloudabi64_fetch_args,
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amd64_cloudabi64_fetch_retval
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};
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PROCABI(amd64_cloudabi64);
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