The branch main has been updated by jlduran:
URL:
https://cgit.FreeBSD.org/src/commit/?id=49a4838a0d94e145a826abf02aa03ff444e614e3
commit 49a4838a0d94e145a826abf02aa03ff444e614e3
Author: Jose Luis Duran <jldu...@freebsd.org>
AuthorDate: 2025-03-04 13:51:47 +0000
Commit: Jose Luis Duran <jldu...@freebsd.org>
CommitDate: 2025-03-04 13:51:47 +0000
vmm: Emulate testb imm8,r/m8
Add support for "testb imm8,r/m8" emulation.
PR: 261940
PR: 282852
Reviewed by: markj, emaste
Approved by: emaste (mentor)
Obtained from: Illumos (https://www.illumos.org/issues/14483)
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D49208
---
sys/amd64/vmm/vmm_instruction_emul.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/sys/amd64/vmm/vmm_instruction_emul.c
b/sys/amd64/vmm/vmm_instruction_emul.c
index 51769faf5893..c53e32889000 100644
--- a/sys/amd64/vmm/vmm_instruction_emul.c
+++ b/sys/amd64/vmm/vmm_instruction_emul.c
@@ -236,6 +236,12 @@ static const struct vie_op one_byte_opcodes[256] = {
.op_byte = 0x8F,
.op_type = VIE_OP_TYPE_POP,
},
+ [0xF6] = {
+ /* XXX Group 3 extended opcode - not just TEST */
+ .op_byte = 0xF6,
+ .op_type = VIE_OP_TYPE_TEST,
+ .op_flags = VIE_OP_F_IMM8,
+ },
[0xF7] = {
/* XXX Group 3 extended opcode - not just TEST */
.op_byte = 0xF7,
@@ -1284,6 +1290,12 @@ emulate_test(struct vcpu *vcpu, uint64_t gpa, struct vie
*vie,
error = EINVAL;
switch (vie->op.op_byte) {
+ case 0xF6:
+ /*
+ * F6 /0 test r/m8, imm8
+ */
+ size = 1; /* override for byte operation */
+ /* FALLTHROUGH */
case 0xF7:
/*
* F7 /0 test r/m16, imm16
