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| author | Josef 'Jeff' Sipek <jeffpc@josefsipek.net> | 2015-10-16 01:22:30 -0400 |
|---|---|---|
| committer | Dan McDonald <danmcd@omniti.com> | 2015-11-09 16:56:23 -0500 |
| commit | cfc41e72a4f85ff48430f435531264fca458f55d (patch) | |
| tree | d0ef8ecd0a2d9e695176301899624b7cb1ac8d31 /usr/src/lib/libdisasm/common/libdisasm.c | |
| parent | 038db8fb497789ea9b367f771544442507cede18 (diff) | |
| download | illumos-joyent-cfc41e72a4f85ff48430f435531264fca458f55d.tar.gz | |
6069 libdisasm: instrlen arch op should have a sane default
Reviewed by: Robert Mustacchi <rm@joyent.com>
Approved by: Dan McDonald <danmcd@omniti.com>
Diffstat (limited to 'usr/src/lib/libdisasm/common/libdisasm.c')
| -rw-r--r-- | usr/src/lib/libdisasm/common/libdisasm.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/usr/src/lib/libdisasm/common/libdisasm.c b/usr/src/lib/libdisasm/common/libdisasm.c index ce48a2da8b..057d4facb1 100644 --- a/usr/src/lib/libdisasm/common/libdisasm.c +++ b/usr/src/lib/libdisasm/common/libdisasm.c @@ -272,9 +272,21 @@ dis_max_instrlen(dis_handle_t *dhp) return (dhp->dh_arch->da_max_instrlen(dhp)); } +static int +dis_generic_instrlen(dis_handle_t *dhp, uint64_t pc) +{ + if (dis_disassemble(dhp, pc, NULL, 0) != 0) + return (-1); + + return (dhp->dh_addr - pc); +} + int dis_instrlen(dis_handle_t *dhp, uint64_t pc) { + if (dhp->dh_arch->da_instrlen == NULL) + return (dis_generic_instrlen(dhp, pc)); + return (dhp->dh_arch->da_instrlen(dhp, pc)); } |