aboutsummaryrefslogtreecommitdiff
path: root/hw/i386/kvmvapic.c
diff options
context:
space:
mode:
Diffstat (limited to 'hw/i386/kvmvapic.c')
-rw-r--r--hw/i386/kvmvapic.c72
1 files changed, 37 insertions, 35 deletions
diff --git a/hw/i386/kvmvapic.c b/hw/i386/kvmvapic.c
index 224601fedd..035d0fe489 100644
--- a/hw/i386/kvmvapic.c
+++ b/hw/i386/kvmvapic.c
@@ -188,9 +188,10 @@ static bool opcode_matches(uint8_t *opcode, const TPRInstruction *instr)
modrm_reg(opcode[1]) == instr->modrm_reg);
}
-static int evaluate_tpr_instruction(VAPICROMState *s, CPUX86State *env,
+static int evaluate_tpr_instruction(VAPICROMState *s, X86CPU *cpu,
target_ulong *pip, TPRAccess access)
{
+ CPUState *cs = CPU(cpu);
const TPRInstruction *instr;
target_ulong ip = *pip;
uint8_t opcode[2];
@@ -211,7 +212,7 @@ static int evaluate_tpr_instruction(VAPICROMState *s, CPUX86State *env,
* RSP, used by the patched instruction, is zero, so the guest gets a
* double fault and dies.
*/
- if (env->regs[R_ESP] == 0) {
+ if (cpu->env.regs[R_ESP] == 0) {
return -1;
}
@@ -226,7 +227,7 @@ static int evaluate_tpr_instruction(VAPICROMState *s, CPUX86State *env,
if (instr->access != access) {
continue;
}
- if (cpu_memory_rw_debug(env, ip - instr->length, opcode,
+ if (cpu_memory_rw_debug(cs, ip - instr->length, opcode,
sizeof(opcode), 0) < 0) {
return -1;
}
@@ -237,7 +238,7 @@ static int evaluate_tpr_instruction(VAPICROMState *s, CPUX86State *env,
}
return -1;
} else {
- if (cpu_memory_rw_debug(env, ip, opcode, sizeof(opcode), 0) < 0) {
+ if (cpu_memory_rw_debug(cs, ip, opcode, sizeof(opcode), 0) < 0) {
return -1;
}
for (i = 0; i < ARRAY_SIZE(tpr_instr); i++) {
@@ -254,7 +255,7 @@ instruction_ok:
* Grab the virtual TPR address from the instruction
* and update the cached values.
*/
- if (cpu_memory_rw_debug(env, ip + instr->addr_offset,
+ if (cpu_memory_rw_debug(cs, ip + instr->addr_offset,
(void *)&real_tpr_addr,
sizeof(real_tpr_addr), 0) < 0) {
return -1;
@@ -334,8 +335,9 @@ static int update_rom_mapping(VAPICROMState *s, CPUX86State *env, target_ulong i
* cannot be accessed or is considered invalid. This also ensures that we are
* not patching the wrong guest.
*/
-static int get_kpcr_number(CPUX86State *env)
+static int get_kpcr_number(X86CPU *cpu)
{
+ CPUX86State *env = &cpu->env;
struct kpcr {
uint8_t fill1[0x1c];
uint32_t self;
@@ -343,7 +345,7 @@ static int get_kpcr_number(CPUX86State *env)
uint8_t number;
} QEMU_PACKED kpcr;
- if (cpu_memory_rw_debug(env, env->segs[R_FS].base,
+ if (cpu_memory_rw_debug(CPU(cpu), env->segs[R_FS].base,
(void *)&kpcr, sizeof(kpcr), 0) < 0 ||
kpcr.self != env->segs[R_FS].base) {
return -1;
@@ -351,9 +353,9 @@ static int get_kpcr_number(CPUX86State *env)
return kpcr.number;
}
-static int vapic_enable(VAPICROMState *s, CPUX86State *env)
+static int vapic_enable(VAPICROMState *s, X86CPU *cpu)
{
- int cpu_number = get_kpcr_number(env);
+ int cpu_number = get_kpcr_number(cpu);
hwaddr vapic_paddr;
static const uint8_t enabled = 1;
@@ -364,26 +366,26 @@ static int vapic_enable(VAPICROMState *s, CPUX86State *env)
(((hwaddr)cpu_number) << VAPIC_CPU_SHIFT);
cpu_physical_memory_rw(vapic_paddr + offsetof(VAPICState, enabled),
(void *)&enabled, sizeof(enabled), 1);
- apic_enable_vapic(env->apic_state, vapic_paddr);
+ apic_enable_vapic(cpu->env.apic_state, vapic_paddr);
s->state = VAPIC_ACTIVE;
return 0;
}
-static void patch_byte(CPUX86State *env, target_ulong addr, uint8_t byte)
+static void patch_byte(X86CPU *cpu, target_ulong addr, uint8_t byte)
{
- cpu_memory_rw_debug(env, addr, &byte, 1, 1);
+ cpu_memory_rw_debug(CPU(cpu), addr, &byte, 1, 1);
}
-static void patch_call(VAPICROMState *s, CPUX86State *env, target_ulong ip,
+static void patch_call(VAPICROMState *s, X86CPU *cpu, target_ulong ip,
uint32_t target)
{
uint32_t offset;
offset = cpu_to_le32(target - ip - 5);
- patch_byte(env, ip, 0xe8); /* call near */
- cpu_memory_rw_debug(env, ip + 1, (void *)&offset, sizeof(offset), 1);
+ patch_byte(cpu, ip, 0xe8); /* call near */
+ cpu_memory_rw_debug(CPU(cpu), ip + 1, (void *)&offset, sizeof(offset), 1);
}
static void patch_instruction(VAPICROMState *s, X86CPU *cpu, target_ulong ip)
@@ -411,32 +413,32 @@ static void patch_instruction(VAPICROMState *s, X86CPU *cpu, target_ulong ip)
pause_all_vcpus();
- cpu_memory_rw_debug(env, ip, opcode, sizeof(opcode), 0);
+ cpu_memory_rw_debug(cs, ip, opcode, sizeof(opcode), 0);
switch (opcode[0]) {
case 0x89: /* mov r32 to r/m32 */
- patch_byte(env, ip, 0x50 + modrm_reg(opcode[1])); /* push reg */
- patch_call(s, env, ip + 1, handlers->set_tpr);
+ patch_byte(cpu, ip, 0x50 + modrm_reg(opcode[1])); /* push reg */
+ patch_call(s, cpu, ip + 1, handlers->set_tpr);
break;
case 0x8b: /* mov r/m32 to r32 */
- patch_byte(env, ip, 0x90);
- patch_call(s, env, ip + 1, handlers->get_tpr[modrm_reg(opcode[1])]);
+ patch_byte(cpu, ip, 0x90);
+ patch_call(s, cpu, ip + 1, handlers->get_tpr[modrm_reg(opcode[1])]);
break;
case 0xa1: /* mov abs to eax */
- patch_call(s, env, ip, handlers->get_tpr[0]);
+ patch_call(s, cpu, ip, handlers->get_tpr[0]);
break;
case 0xa3: /* mov eax to abs */
- patch_call(s, env, ip, handlers->set_tpr_eax);
+ patch_call(s, cpu, ip, handlers->set_tpr_eax);
break;
case 0xc7: /* mov imm32, r/m32 (c7/0) */
- patch_byte(env, ip, 0x68); /* push imm32 */
- cpu_memory_rw_debug(env, ip + 6, (void *)&imm32, sizeof(imm32), 0);
- cpu_memory_rw_debug(env, ip + 1, (void *)&imm32, sizeof(imm32), 1);
- patch_call(s, env, ip + 5, handlers->set_tpr);
+ patch_byte(cpu, ip, 0x68); /* push imm32 */
+ cpu_memory_rw_debug(cs, ip + 6, (void *)&imm32, sizeof(imm32), 0);
+ cpu_memory_rw_debug(cs, ip + 1, (void *)&imm32, sizeof(imm32), 1);
+ patch_call(s, cpu, ip + 5, handlers->set_tpr);
break;
case 0xff: /* push r/m32 */
- patch_byte(env, ip, 0x50); /* push eax */
- patch_call(s, env, ip + 1, handlers->get_tpr_stack);
+ patch_byte(cpu, ip, 0x50); /* push eax */
+ patch_call(s, cpu, ip + 1, handlers->get_tpr_stack);
break;
default:
abort();
@@ -460,16 +462,16 @@ void vapic_report_tpr_access(DeviceState *dev, CPUState *cs, target_ulong ip,
cpu_synchronize_state(cs);
- if (evaluate_tpr_instruction(s, env, &ip, access) < 0) {
+ if (evaluate_tpr_instruction(s, cpu, &ip, access) < 0) {
if (s->state == VAPIC_ACTIVE) {
- vapic_enable(s, env);
+ vapic_enable(s, cpu);
}
return;
}
if (update_rom_mapping(s, env, ip) < 0) {
return;
}
- if (vapic_enable(s, env) < 0) {
+ if (vapic_enable(s, cpu) < 0) {
return;
}
patch_instruction(s, cpu, ip);
@@ -669,8 +671,8 @@ static void vapic_write(void *opaque, hwaddr addr, uint64_t data,
* accurate.
*/
pause_all_vcpus();
- patch_byte(env, env->eip - 2, 0x66);
- patch_byte(env, env->eip - 1, 0x90);
+ patch_byte(cpu, env->eip - 2, 0x66);
+ patch_byte(cpu, env->eip - 1, 0x90);
resume_all_vcpus();
}
@@ -683,7 +685,7 @@ static void vapic_write(void *opaque, hwaddr addr, uint64_t data,
if (find_real_tpr_addr(s, env) < 0) {
break;
}
- vapic_enable(s, env);
+ vapic_enable(s, cpu);
break;
default:
case 4:
@@ -725,7 +727,7 @@ static void do_vapic_enable(void *data)
VAPICROMState *s = data;
X86CPU *cpu = X86_CPU(first_cpu);
- vapic_enable(s, &cpu->env);
+ vapic_enable(s, cpu);
}
static int vapic_post_load(void *opaque, int version_id)
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-13 15:42:12 +0000