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authorPaolo Bonzini <pbonzini@redhat.com>2017-10-03 15:33:29 +0200
committerPaolo Bonzini <pbonzini@redhat.com>2017-12-22 15:02:05 +0100
commit69e0a03c3f28f5bd35f54a47cd4996cc14e135ba (patch)
tree5a2a715a6844f03dc2d34eeff7edb537ad441968 /target/i386/hvf/x86_descr.c
parent3010460fb99776bdf0a8b170555f2ab076382f9c (diff)
downloadqemu-69e0a03c3f28f5bd35f54a47cd4996cc14e135ba.zip
i386: hvf: move all hvf files in the same directory
Just call it hvf/, no need for the "utils" suffix. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'target/i386/hvf/x86_descr.c')
-rw-r--r--target/i386/hvf/x86_descr.c124
1 files changed, 124 insertions, 0 deletions
diff --git a/target/i386/hvf/x86_descr.c b/target/i386/hvf/x86_descr.c
new file mode 100644
index 0000000000..0b9562818f
--- /dev/null
+++ b/target/i386/hvf/x86_descr.c
@@ -0,0 +1,124 @@
+/*
+ * Copyright (C) 2016 Veertu Inc,
+ * Copyright (C) 2017 Google Inc,
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "qemu/osdep.h"
+
+#include "vmx.h"
+#include "x86_descr.h"
+
+#define VMX_SEGMENT_FIELD(seg) \
+ [REG_SEG_##seg] = { \
+ .selector = VMCS_GUEST_##seg##_SELECTOR, \
+ .base = VMCS_GUEST_##seg##_BASE, \
+ .limit = VMCS_GUEST_##seg##_LIMIT, \
+ .ar_bytes = VMCS_GUEST_##seg##_ACCESS_RIGHTS, \
+}
+
+static const struct vmx_segment_field {
+ int selector;
+ int base;
+ int limit;
+ int ar_bytes;
+} vmx_segment_fields[] = {
+ VMX_SEGMENT_FIELD(ES),
+ VMX_SEGMENT_FIELD(CS),
+ VMX_SEGMENT_FIELD(SS),
+ VMX_SEGMENT_FIELD(DS),
+ VMX_SEGMENT_FIELD(FS),
+ VMX_SEGMENT_FIELD(GS),
+ VMX_SEGMENT_FIELD(LDTR),
+ VMX_SEGMENT_FIELD(TR),
+};
+
+uint32_t vmx_read_segment_limit(CPUState *cpu, x86_reg_segment seg)
+{
+ return (uint32_t)rvmcs(cpu->hvf_fd, vmx_segment_fields[seg].limit);
+}
+
+uint32_t vmx_read_segment_ar(CPUState *cpu, x86_reg_segment seg)
+{
+ return (uint32_t)rvmcs(cpu->hvf_fd, vmx_segment_fields[seg].ar_bytes);
+}
+
+uint64_t vmx_read_segment_base(CPUState *cpu, x86_reg_segment seg)
+{
+ return rvmcs(cpu->hvf_fd, vmx_segment_fields[seg].base);
+}
+
+x68_segment_selector vmx_read_segment_selector(CPUState *cpu, x86_reg_segment seg)
+{
+ x68_segment_selector sel;
+ sel.sel = rvmcs(cpu->hvf_fd, vmx_segment_fields[seg].selector);
+ return sel;
+}
+
+void vmx_write_segment_selector(struct CPUState *cpu, x68_segment_selector selector, x86_reg_segment seg)
+{
+ wvmcs(cpu->hvf_fd, vmx_segment_fields[seg].selector, selector.sel);
+}
+
+void vmx_read_segment_descriptor(struct CPUState *cpu, struct vmx_segment *desc, x86_reg_segment seg)
+{
+ desc->sel = rvmcs(cpu->hvf_fd, vmx_segment_fields[seg].selector);
+ desc->base = rvmcs(cpu->hvf_fd, vmx_segment_fields[seg].base);
+ desc->limit = rvmcs(cpu->hvf_fd, vmx_segment_fields[seg].limit);
+ desc->ar = rvmcs(cpu->hvf_fd, vmx_segment_fields[seg].ar_bytes);
+}
+
+void vmx_write_segment_descriptor(CPUState *cpu, struct vmx_segment *desc, x86_reg_segment seg)
+{
+ const struct vmx_segment_field *sf = &vmx_segment_fields[seg];
+
+ wvmcs(cpu->hvf_fd, sf->base, desc->base);
+ wvmcs(cpu->hvf_fd, sf->limit, desc->limit);
+ wvmcs(cpu->hvf_fd, sf->selector, desc->sel);
+ wvmcs(cpu->hvf_fd, sf->ar_bytes, desc->ar);
+}
+
+void x86_segment_descriptor_to_vmx(struct CPUState *cpu, x68_segment_selector selector, struct x86_segment_descriptor *desc, struct vmx_segment *vmx_desc)
+{
+ vmx_desc->sel = selector.sel;
+ vmx_desc->base = x86_segment_base(desc);
+ vmx_desc->limit = x86_segment_limit(desc);
+
+ vmx_desc->ar = (selector.sel ? 0 : 1) << 16 |
+ desc->g << 15 |
+ desc->db << 14 |
+ desc->l << 13 |
+ desc->avl << 12 |
+ desc->p << 7 |
+ desc->dpl << 5 |
+ desc->s << 4 |
+ desc->type;
+}
+
+void vmx_segment_to_x86_descriptor(struct CPUState *cpu, struct vmx_segment *vmx_desc, struct x86_segment_descriptor *desc)
+{
+ x86_set_segment_limit(desc, vmx_desc->limit);
+ x86_set_segment_base(desc, vmx_desc->base);
+
+ desc->type = vmx_desc->ar & 15;
+ desc->s = (vmx_desc->ar >> 4) & 1;
+ desc->dpl = (vmx_desc->ar >> 5) & 3;
+ desc->p = (vmx_desc->ar >> 7) & 1;
+ desc->avl = (vmx_desc->ar >> 12) & 1;
+ desc->l = (vmx_desc->ar >> 13) & 1;
+ desc->db = (vmx_desc->ar >> 14) & 1;
+ desc->g = (vmx_desc->ar >> 15) & 1;
+}
+