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freebsd-dev/usr.bin/truss/amd64-cloudabi64.c

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Make truss print CloudABI system call names. This change adds the bits that are necessary to fetch system call arguments and return values from trapframes for CloudABI. This allows us to properly print system calls with the right name. We need to make sure that we properly convert error numbers when system calls fail. We still need to improve truss to pretty-print some of the system calls that have flags.
2015-10-02 11:17:15 +00:00
/*-
* Copyright (c) 2015 Nuxi, https://nuxi.nl/
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/ptrace.h>
#include <machine/psl.h>
#include <errno.h>
#include <stdio.h>
Make truss work for CloudABI processes on aarch64. This change copies over amd64-cloudabi64.c to aarch64-cloudabi.c and adjusts it to fetch the proper registers on aarch64. To reduce the amount of shared code, the errno conversion function is moved into a separate source file. Reviewed by: jhb, andrew Differential Revision: https://reviews.freebsd.org/D4023
2015-10-30 08:11:37 +00:00
#include "cloudabi.h"
Make truss print CloudABI system call names. This change adds the bits that are necessary to fetch system call arguments and return values from trapframes for CloudABI. This allows us to properly print system calls with the right name. We need to make sure that we properly convert error numbers when system calls fail. We still need to improve truss to pretty-print some of the system calls that have flags.
2015-10-02 11:17:15 +00:00
#include "cloudabi64_syscalls.h"
#include "truss.h"
static int
amd64_cloudabi64_fetch_args(struct trussinfo *trussinfo, unsigned int narg)
{
struct current_syscall *cs;
struct reg regs;
lwpid_t tid;
tid = trussinfo->curthread->tid;
if (ptrace(PT_GETREGS, tid, (caddr_t)&regs, 0) == -1) {
fprintf(trussinfo->outfile, "-- CANNOT READ REGISTERS --\n");
return (-1);
}
cs = &trussinfo->curthread->cs;
if (narg >= 1)
cs->args[0] = regs.r_rdi;
if (narg >= 2)
cs->args[1] = regs.r_rsi;
if (narg >= 3)
cs->args[2] = regs.r_rdx;
if (narg >= 4)
cs->args[3] = regs.r_rcx;
if (narg >= 5)
cs->args[4] = regs.r_r8;
if (narg >= 6)
cs->args[5] = regs.r_r9;
return (0);
}
static int
amd64_cloudabi64_fetch_retval(struct trussinfo *trussinfo, long *retval,
int *errorp)
{
struct reg regs;
lwpid_t tid;
tid = trussinfo->curthread->tid;
if (ptrace(PT_GETREGS, tid, (caddr_t)&regs, 0) == -1) {
fprintf(trussinfo->outfile, "-- CANNOT READ REGISTERS --\n");
return (-1);
}
retval[0] = regs.r_rax;
retval[1] = regs.r_rdx;
*errorp = (regs.r_rflags & PSL_C) != 0;
Make truss work for CloudABI processes on aarch64. This change copies over amd64-cloudabi64.c to aarch64-cloudabi.c and adjusts it to fetch the proper registers on aarch64. To reduce the amount of shared code, the errno conversion function is moved into a separate source file. Reviewed by: jhb, andrew Differential Revision: https://reviews.freebsd.org/D4023
2015-10-30 08:11:37 +00:00
if (*errorp)
retval[0] = cloudabi_convert_errno(retval[0]);
Make truss print CloudABI system call names. This change adds the bits that are necessary to fetch system call arguments and return values from trapframes for CloudABI. This allows us to properly print system calls with the right name. We need to make sure that we properly convert error numbers when system calls fail. We still need to improve truss to pretty-print some of the system calls that have flags.
2015-10-02 11:17:15 +00:00
return (0);
}
static struct procabi amd64_cloudabi64 = {
"CloudABI ELF64",
Simplify syscall generation and ABI source file handling for the build. This is to make the Makefile more easily extendable for new ABIs. This also makes several other subtle changes: - The build now is given a list of ABIs to use based on the MACHINE_ARCH or MACHINE_CPUARCH. These ABIs have a related path in sys/ that is used to generate their syscalls. For each ABI to build check for a ABI.c, MACHINE_ARCH-ABI.c, or a MACHINE_CPUARCH-ABI.c. This matches the old behavior needed for archs such as powerpc* and mips*. - The ABI source file selection allows for simpler assignment of common ABIs such as "fbsd32" from sys/compat/freebsd32, or cloudabi64. - Expand 'fbsd' to 'freebsd' everywhere for consistency. - Split out the powerpc-fbsd.c file into a powerpc64-freebsd32.c to be more like the amd64-freebsd32.c file and to more easily allow the auto-generation of ABI handling to work. - Rename 'syscalls.h' to 'fbsd_syscalls.h' to lessen the ambiguity and avoid confusion with syscall.h (such as in r288997). - For non-native syscall header files, they are now renamed to be ABI_syscalls.h, where ABI is what ABI the Makefile is building. - Remove all of the makesyscalls config files. The "native" one being name i386.conf was a long outstanding bug. They were all the same except for the data they generated, so now it is just auto-generated as a build artifact. - The syscalls array is now fixed to be static in the syscalls header to remove the compiler warning about non-extern. This was worked around in the aarch64-fbsd.c file but not the others. - All syscall table names are now just 'syscallnames' since they don't need to be different as they are all static in their own ABI files. The alternative is to name them ABI_syscallnames which does not seem necessary. Reviewed by: ed, jhb MFC after: 3 weeks Differential Revision: https://reviews.freebsd.org/D3851
2015-10-13 18:23:51 +00:00
syscallnames,
nitems(syscallnames),
Make truss print CloudABI system call names. This change adds the bits that are necessary to fetch system call arguments and return values from trapframes for CloudABI. This allows us to properly print system calls with the right name. We need to make sure that we properly convert error numbers when system calls fail. We still need to improve truss to pretty-print some of the system calls that have flags.
2015-10-02 11:17:15 +00:00
amd64_cloudabi64_fetch_args,
amd64_cloudabi64_fetch_retval
};
PROCABI(amd64_cloudabi64);
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