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commit: 05bc0619935cd3646e282a8d68b9564cad7d5b6e |
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Author: Mike Frysinger <vapier <AT> gentoo <DOT> org> |
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AuthorDate: Sun Dec 20 22:04:16 2015 +0000 |
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Commit: Mike Frysinger <vapier <AT> gentoo <DOT> org> |
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CommitDate: Sun Dec 20 22:04:16 2015 +0000 |
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URL: https://gitweb.gentoo.org/proj/sandbox.git/commit/?id=05bc0619 |
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|
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libsandbox: fix alpha ptrace error setting |
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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 | 7 ++++++- |
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1 file changed, 6 insertions(+), 1 deletion(-) |
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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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index 4aa6cd6..950d019 100644 |
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--- a/libsandbox/trace/linux/alpha.c |
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+++ b/libsandbox/trace/linux/alpha.c |
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@@ -52,7 +52,12 @@ static long trace_raw_ret(void *vregs) |
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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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+ /* We set r19 here, but it looks like trace_set_regs does not sync that. |
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+ * Remember that {r16..r31} == {a0..a15}, so when we write out {a0..a5}, |
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+ * we also write out {r16..r21} -- a3 == r19. |
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+ */ |
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trace_regs *regs = vregs; |
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- regs->r0 = -err; |
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+ regs->r0 = err; |
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+ regs->r19 = -1; |
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trace_set_regs(regs); |
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} |
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