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commit: d4aff41888c4e8eb71519330ab7621aed3f73da4 |
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Author: Mike Frysinger <vapier <AT> gentoo <DOT> org> |
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AuthorDate: Sun Dec 20 11:06:45 2015 +0000 |
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Commit: Mike Frysinger <vapier <AT> gentoo <DOT> org> |
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CommitDate: Sun Dec 20 11:06:45 2015 +0000 |
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URL: https://gitweb.gentoo.org/proj/sandbox.git/commit/?id=d4aff418 |
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|
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libsandbox: new alpha ptrace port |
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|
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Signed-off-by: Mike Frysinger <vapier <AT> gentoo.org> |
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|
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libsandbox/trace/linux/alpha.c | 58 ++++++++++++++++++++++++++++++++++++++++++ |
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libsandbox/trace/linux/arch.c | 2 ++ |
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2 files changed, 60 insertions(+) |
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|
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diff --git a/libsandbox/trace/linux/alpha.c b/libsandbox/trace/linux/alpha.c |
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new file mode 100644 |
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index 0000000..4aa6cd6 |
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--- /dev/null |
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+++ b/libsandbox/trace/linux/alpha.c |
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@@ -0,0 +1,58 @@ |
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+#define REG_R0 0 |
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+#define REG_A0 16 |
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+ |
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+#define trace_reg_sysnum r0 |
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+ |
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+static unsigned long trace_arg(void *vregs, int num) |
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+{ |
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+ trace_regs *regs = vregs; |
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+ if (num < 7) |
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+ return *(®s->r16 + num - 1); |
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+ else |
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+ return -1; |
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+} |
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+ |
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+static long do_peekuser(long offset) |
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+{ |
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+ return do_ptrace(PTRACE_PEEKUSER, (void *)offset, NULL); |
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+} |
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+ |
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+static long do_pokeuser(long offset, long val) |
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+{ |
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+ return do_ptrace(PTRACE_POKEUSER, (void *)offset, (void *)val); |
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+} |
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+ |
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+#undef trace_get_regs |
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+static long trace_get_regs(void *vregs) |
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+{ |
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+ trace_regs *regs = vregs; |
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+ size_t i; |
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+ regs->r0 = do_peekuser(REG_R0); |
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+ for (i = 0; i < 7; ++i) |
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+ *(®s->r16 + i) = do_peekuser(REG_A0 + i); |
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+ return 0; |
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+} |
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+ |
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+#undef trace_set_regs |
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+static long trace_set_regs(void *vregs) |
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+{ |
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+ trace_regs *regs = vregs; |
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+ size_t i; |
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+ do_pokeuser(REG_R0, regs->r0); |
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+ for (i = 0; i < 7; ++i) |
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+ do_pokeuser(REG_A0 + i, *(®s->r16 + i)); |
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+ return 0; |
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+} |
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+ |
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+static long trace_raw_ret(void *vregs) |
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+{ |
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+ trace_regs *regs = vregs; |
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+ return regs->r16; |
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+} |
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+ |
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+static void trace_set_ret(void *vregs, int err) |
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+{ |
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+ trace_regs *regs = vregs; |
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+ regs->r0 = -err; |
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+ trace_set_regs(regs); |
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+} |
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|
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diff --git a/libsandbox/trace/linux/arch.c b/libsandbox/trace/linux/arch.c |
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index 83b6977..1515abe 100644 |
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--- a/libsandbox/trace/linux/arch.c |
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+++ b/libsandbox/trace/linux/arch.c |
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@@ -7,6 +7,8 @@ |
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#if !defined(HAVE_PTRACE) || !defined(HAVE_SYS_PTRACE_H) || \ |
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!defined(HAVE_SYS_USER_H) || !defined(PTRACE_SETOPTIONS) |
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# define SB_NO_TRACE_ARCH |
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+#elif defined(__alpha__) |
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+# include "alpha.c" |
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#elif defined(__arm__) |
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# include "arm.c" |
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#elif defined(__bfin__) |