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| author |   Mike Frysinger <vapier@gentoo.org> | 2021-10-25 22:56:41 -0400 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2021-10-25 22:56:41 -0400 |
| commit | 3e60745c278248baa9cac3da0b4ed3f7dcd96501 (patch) | |
| tree | 0ea7c1fc5c01e69022606d005ff960bd8924cd3e | |
| parent | libsandbox: use PTRACE_GET_SYSCALL_INFO when available (diff) | |
| download | sandbox-3e60745c278248baa9cac3da0b4ed3f7dcd96501.tar.gz sandbox-3e60745c278248baa9cac3da0b4ed3f7dcd96501.tar.bz2 sandbox-3e60745c278248baa9cac3da0b4ed3f7dcd96501.zip | |
libsandbox: port ptrace to aarch64
Seems to pass (almost all) unittests on Linux 4.19. The unlink_static
doesn't seem to actually block the call, but it blocks others. Still,
better than nothing at all at this point.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| -rw-r--r-- | libsandbox/trace/linux/aarch64.c | 31 | ||||
| -rw-r--r-- | libsandbox/trace/linux/arch.c | 2 |
2 files changed, 33 insertions, 0 deletions
diff --git a/libsandbox/trace/linux/aarch64.c b/libsandbox/trace/linux/aarch64.c new file mode 100644 index 0000000..d056259 --- /dev/null +++ b/libsandbox/trace/linux/aarch64.c @@ -0,0 +1,31 @@ +#define trace_reg_ret regs[0] /* x0 */ +#define trace_reg_sysnum regs[8] /* w0 */ + +#undef trace_get_regs +static long trace_get_regs(void *vregs) +{ + struct iovec iov_regs = { + .iov_base = vregs, + .iov_len = sizeof(trace_regs), + }; + return do_ptrace(PTRACE_GETREGSET, (void *)(uintptr_t)NT_PRSTATUS, &iov_regs); +} + +#undef trace_set_regs +static long trace_set_regs(void *vregs) +{ + struct iovec iov_regs = { + .iov_base = vregs, + .iov_len = sizeof(trace_regs), + }; + return do_ptrace(PTRACE_SETREGSET, (void *)(uintptr_t)NT_PRSTATUS, &iov_regs); +} + +static unsigned long trace_arg(void *vregs, int num) +{ + trace_regs *regs = vregs; + if (num < 7) + return regs->regs[num - 1]; /* x0 - x5 */ + else + return -1; +} diff --git a/libsandbox/trace/linux/arch.c b/libsandbox/trace/linux/arch.c index fd2d0de..16cdf9b 100644 --- a/libsandbox/trace/linux/arch.c +++ b/libsandbox/trace/linux/arch.c @@ -7,6 +7,8 @@ #if !defined(HAVE_PTRACE) || !defined(HAVE_SYS_PTRACE_H) || \ !defined(HAVE_SYS_USER_H) || !defined(PTRACE_SETOPTIONS) # define SB_NO_TRACE_ARCH +#elif defined(__aarch64__) +# include "aarch64.c" #elif defined(__alpha__) # include "alpha.c" #elif defined(__arm__) |