From 574d96933ceff60b2d13fe97602572fc7e95f7c6 Mon Sep 17 00:00:00 2001 From: "Dr. David Alan Gilbert" Date: Fri, 12 Apr 2019 16:26:52 +0100 Subject: hmp: gva2gpa debug command Add a gva2gpa command purely for debug which performs address translation on the gva, the existing gpa2hva command can then also be used to find it in the qemu userspace; e.g. (qemu) info registers .... RSP=ffffffff81c03e98 .... (qemu) gva2gpa 0xffffffff81c03e98 gpa: 0x1c03e98 (qemu) gpa2hva 0x1c03e98 Host virtual address for 0x1c03e98 (pc.ram) is 0x7f0599a03e98 (qemu) x/10x 0xffffffff81c03e98 ffffffff81c03e98: 0x81c03eb8 0xffffffff 0x8101ea3f 0xffffffff ffffffff81c03ea8: 0x81d27b00 0xffffffff 0x00000000 0x00000000 ffffffff81c03eb8: 0x81c03ec8 0xffffffff gdb -p ...qemu... (gdb) x/10x 0x7f0599a03e98 0x7f0599a03e98: 0x81c03eb8 0xffffffff 0x8101ea3f 0xffffffff 0x7f0599a03ea8: 0x81d27b00 0xffffffff 0x00000000 0x00000000 0x7f0599a03eb8: 0x81c03ec8 0xffffffff Signed-off-by: Dr. David Alan Gilbert Message-Id: <20190412152652.827-1-dgilbert@redhat.com> Reviewed-by: Stefan Hajnoczi Signed-off-by: Dr. David Alan Gilbert --- monitor.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'monitor.c') diff --git a/monitor.c b/monitor.c index 9b5f10b..bb48997 100644 --- a/monitor.c +++ b/monitor.c @@ -1673,6 +1673,28 @@ static void hmp_gpa2hva(Monitor *mon, const QDict *qdict) memory_region_unref(mr); } +static void hmp_gva2gpa(Monitor *mon, const QDict *qdict) +{ + target_ulong addr = qdict_get_int(qdict, "addr"); + MemTxAttrs attrs; + CPUState *cs = mon_get_cpu(); + hwaddr gpa; + + if (!cs) { + monitor_printf(mon, "No cpu\n"); + return; + } + + gpa = cpu_get_phys_page_attrs_debug(mon_get_cpu(), + addr & TARGET_PAGE_MASK, &attrs); + if (gpa == -1) { + monitor_printf(mon, "Unmapped\n"); + } else { + monitor_printf(mon, "gpa: %#" HWADDR_PRIx "\n", + gpa + (addr & ~TARGET_PAGE_MASK)); + } +} + #ifdef CONFIG_LINUX static uint64_t vtop(void *ptr, Error **errp) { -- cgit v1.1