/*
* i386 helpers
- *
+ *
* Copyright (c) 2003 Fabrice Bellard
*
* This library is free software; you can redistribute it and/or
#if 0
#define raise_exception_err(a, b)\
do {\
- fprintf(logfile, "raise_exception line=%d\n", __LINE__);\
+ if (logfile)\
+ fprintf(logfile, "raise_exception line=%d\n", __LINE__);\
(raise_exception_err)(a, b);\
} while (0)
#endif
/* modulo 17 table */
const uint8_t rclw_table[32] = {
- 0, 1, 2, 3, 4, 5, 6, 7,
+ 0, 1, 2, 3, 4, 5, 6, 7,
8, 9,10,11,12,13,14,15,
16, 0, 1, 2, 3, 4, 5, 6,
7, 8, 9,10,11,12,13,14,
/* modulo 9 table */
const uint8_t rclb_table[32] = {
- 0, 1, 2, 3, 4, 5, 6, 7,
+ 0, 1, 2, 3, 4, 5, 6, 7,
8, 0, 1, 2, 3, 4, 5, 6,
- 7, 8, 0, 1, 2, 3, 4, 5,
+ 7, 8, 0, 1, 2, 3, 4, 5,
6, 7, 8, 0, 1, 2, 3, 4,
};
1.44269504088896340739L, /*l2e*/
3.32192809488736234781L, /*l2t*/
};
-
+
/* thread support */
spinlock_t global_cpu_lock = SPIN_LOCK_UNLOCKED;
spin_unlock(&global_cpu_lock);
}
-void cpu_loop_exit(void)
-{
- /* NOTE: the register at this point must be saved by hand because
- longjmp restore them */
- regs_to_env();
- longjmp(env->jmp_env, 1);
-}
-
/* return non zero if error */
static inline int load_segment(uint32_t *e1_ptr, uint32_t *e2_ptr,
int selector)
*e2_ptr = ldl_kernel(ptr + 4);
return 0;
}
-
+
static inline unsigned int get_seg_limit(uint32_t e1, uint32_t e2)
{
unsigned int limit;
static inline void load_seg_vm(int seg, int selector)
{
selector &= 0xffff;
- cpu_x86_load_seg_cache(env, seg, selector,
+ cpu_x86_load_seg_cache(env, seg, selector,
(selector << 4), 0xffff, 0);
}
-static inline void get_ss_esp_from_tss(uint32_t *ss_ptr,
+static inline void get_ss_esp_from_tss(uint32_t *ss_ptr,
uint32_t *esp_ptr, int dpl)
{
int type, index, shift;
-
+
#if 0
{
int i;
if (seg_reg == R_CS) {
if (!(e2 & DESC_CS_MASK))
raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
+ /* XXX: is it correct ? */
if (dpl != rpl)
raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
if ((e2 & DESC_C_MASK) && dpl > rpl)
raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
-
} else if (seg_reg == R_SS) {
/* SS must be writable data */
if ((e2 & DESC_CS_MASK) || !(e2 & DESC_W_MASK))
}
if (!(e2 & DESC_P_MASK))
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
- cpu_x86_load_seg_cache(env, seg_reg, selector,
+ cpu_x86_load_seg_cache(env, seg_reg, selector,
get_seg_base(e1, e2),
get_seg_limit(e1, e2),
e2);
} else {
- if (seg_reg == R_SS || seg_reg == R_CS)
+ if (seg_reg == R_SS || seg_reg == R_CS)
raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
}
}
#define SWITCH_TSS_CALL 2
/* XXX: restore CPU state in registers (PowerPC case) */
-static void switch_tss(int tss_selector,
+static void switch_tss(int tss_selector,
uint32_t e1, uint32_t e2, int source,
uint32_t next_eip)
{
tss_limit_max = 43;
tss_limit = get_seg_limit(e1, e2);
tss_base = get_seg_base(e1, e2);
- if ((tss_selector & 4) != 0 ||
+ if ((tss_selector & 4) != 0 ||
tss_limit < tss_limit_max)
raise_exception_err(EXCP0A_TSS, tss_selector & 0xfffc);
old_type = (env->tr.flags >> DESC_TYPE_SHIFT) & 0xf;
new_segs[R_GS] = 0;
new_trap = 0;
}
-
+
/* NOTE: we must avoid memory exceptions during the task switch,
so we make dummy accesses before */
/* XXX: it can still fail in some cases, so a bigger hack is
necessary to valid the TLB after having done the accesses */
v1 = ldub_kernel(env->tr.base);
- v2 = ldub(env->tr.base + old_tss_limit_max);
+ v2 = ldub_kernel(env->tr.base + old_tss_limit_max);
stb_kernel(env->tr.base, v1);
stb_kernel(env->tr.base + old_tss_limit_max, v2);
-
+
/* clear busy bit (it is restartable) */
if (source == SWITCH_TSS_JMP || source == SWITCH_TSS_IRET) {
target_ulong ptr;
old_eflags = compute_eflags();
if (source == SWITCH_TSS_IRET)
old_eflags &= ~NT_MASK;
-
+
/* save the current state in the old TSS */
if (type & 8) {
/* 32 bit */
for(i = 0; i < 4; i++)
stw_kernel(env->tr.base + (0x22 + i * 4), env->segs[i].selector);
}
-
+
/* now if an exception occurs, it will occurs in the next task
context */
env->tr.base = tss_base;
env->tr.limit = tss_limit;
env->tr.flags = e2 & ~DESC_TSS_BUSY_MASK;
-
+
if ((type & 8) && (env->cr[0] & CR0_PG_MASK)) {
cpu_x86_update_cr3(env, new_cr3);
}
-
+
/* load all registers without an exception, then reload them with
possible exception */
env->eip = new_eip;
- eflags_mask = TF_MASK | AC_MASK | ID_MASK |
+ eflags_mask = TF_MASK | AC_MASK | ID_MASK |
IF_MASK | IOPL_MASK | VM_MASK | RF_MASK | NT_MASK;
if (!(type & 8))
eflags_mask &= 0xffff;
ESI = new_regs[6];
EDI = new_regs[7];
if (new_eflags & VM_MASK) {
- for(i = 0; i < 6; i++)
+ for(i = 0; i < 6; i++)
load_seg_vm(i, new_segs[i]);
/* in vm86, CPL is always 3 */
cpu_x86_set_cpl(env, 3);
for(i = 0; i < 6; i++)
cpu_x86_load_seg_cache(env, i, new_segs[i], 0, 0, 0);
}
-
+
env->ldt.selector = new_ldt & ~4;
env->ldt.base = 0;
env->ldt.limit = 0;
raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc);
load_seg_cache_raw_dt(&env->ldt, e1, e2);
}
-
+
/* load the segments */
if (!(new_eflags & VM_MASK)) {
tss_load_seg(R_CS, new_segs[R_CS]);
tss_load_seg(R_FS, new_segs[R_FS]);
tss_load_seg(R_GS, new_segs[R_GS]);
}
-
+
/* check that EIP is in the CS segment limits */
if (new_eip > env->segs[R_CS].limit) {
/* XXX: different exception if CALL ? */
static inline void check_io(int addr, int size)
{
int io_offset, val, mask;
-
+
/* TSS must be a valid 32 bit one */
if (!(env->tr.flags & DESC_P_MASK) ||
((env->tr.flags >> DESC_TYPE_SHIFT) & 0xf) != 9 ||
return 0xffff;
}
+#ifdef TARGET_X86_64
+#define SET_ESP(val, sp_mask)\
+do {\
+ if ((sp_mask) == 0xffff)\
+ ESP = (ESP & ~0xffff) | ((val) & 0xffff);\
+ else if ((sp_mask) == 0xffffffffLL)\
+ ESP = (uint32_t)(val);\
+ else\
+ ESP = (val);\
+} while (0)
+#else
+#define SET_ESP(val, sp_mask) ESP = (ESP & ~(sp_mask)) | ((val) & (sp_mask))
+#endif
+
/* XXX: add a is_user flag to have proper security support */
#define PUSHW(ssp, sp, sp_mask, val)\
{\
{
SegmentCache *dt;
target_ulong ptr, ssp;
- int type, dpl, selector, ss_dpl, cpl, sp_mask;
+ int type, dpl, selector, ss_dpl, cpl;
int has_error_code, new_stack, shift;
uint32_t e1, e2, offset, ss, esp, ss_e1, ss_e2;
- uint32_t old_eip;
+ uint32_t old_eip, sp_mask;
has_error_code = 0;
if (!is_int && !is_hw) {
raise_exception_err(EXCP0B_NOSEG, intno * 8 + 2);
switch_tss(intno * 8, e1, e2, SWITCH_TSS_CALL, old_eip);
if (has_error_code) {
- int mask;
+ int type;
+ uint32_t mask;
/* push the error code */
- shift = (env->segs[R_CS].flags >> DESC_B_SHIFT) & 1;
+ type = (env->tr.flags >> DESC_TYPE_SHIFT) & 0xf;
+ shift = type >> 3;
if (env->segs[R_SS].flags & DESC_B_MASK)
mask = 0xffffffff;
else
stl_kernel(ssp, error_code);
else
stw_kernel(ssp, error_code);
- ESP = (esp & mask) | (ESP & ~mask);
+ SET_ESP(esp, mask);
}
return;
case 6: /* 286 interrupt gate */
if (!(e2 & DESC_P_MASK))
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
if (!(e2 & DESC_C_MASK) && dpl < cpl) {
- /* to inner priviledge */
+ /* to inner privilege */
get_ss_esp_from_tss(&ss, &esp, dpl);
if ((ss & 0xfffc) == 0)
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
sp_mask = get_sp_mask(ss_e2);
ssp = get_seg_base(ss_e1, ss_e2);
} else if ((e2 & DESC_C_MASK) || dpl == cpl) {
- /* to same priviledge */
+ /* to same privilege */
if (env->eflags & VM_MASK)
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
new_stack = 0;
PUSHW(ssp, esp, sp_mask, error_code);
}
}
-
+
if (new_stack) {
if (env->eflags & VM_MASK) {
cpu_x86_load_seg_cache(env, R_ES, 0, 0, 0, 0);
cpu_x86_load_seg_cache(env, R_GS, 0, 0, 0, 0);
}
ss = (ss & ~3) | dpl;
- cpu_x86_load_seg_cache(env, R_SS, ss,
+ cpu_x86_load_seg_cache(env, R_SS, ss,
ssp, get_seg_limit(ss_e1, ss_e2), ss_e2);
}
- ESP = (ESP & ~sp_mask) | (esp & sp_mask);
+ SET_ESP(esp, sp_mask);
selector = (selector & ~3) | dpl;
- cpu_x86_load_seg_cache(env, R_CS, selector,
+ cpu_x86_load_seg_cache(env, R_CS, selector,
get_seg_base(e1, e2),
get_seg_limit(e1, e2),
e2);
static inline target_ulong get_rsp_from_tss(int level)
{
int index;
-
+
#if 0
- printf("TR: base=" TARGET_FMT_lx " limit=%x\n",
+ printf("TR: base=" TARGET_FMT_lx " limit=%x\n",
env->tr.base, env->tr.limit);
#endif
if (!(e2 & DESC_L_MASK) || (e2 & DESC_B_MASK))
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
if ((!(e2 & DESC_C_MASK) && dpl < cpl) || ist != 0) {
- /* to inner priviledge */
+ /* to inner privilege */
if (ist != 0)
esp = get_rsp_from_tss(ist + 3);
else
esp = get_rsp_from_tss(dpl);
+ esp &= ~0xfLL; /* align stack */
ss = 0;
new_stack = 1;
} else if ((e2 & DESC_C_MASK) || dpl == cpl) {
- /* to same priviledge */
+ /* to same privilege */
if (env->eflags & VM_MASK)
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
new_stack = 0;
- esp = ESP & ~0xf; /* align stack */
+ if (ist != 0)
+ esp = get_rsp_from_tss(ist + 3);
+ else
+ esp = ESP;
+ esp &= ~0xfLL; /* align stack */
dpl = cpl;
} else {
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
if (has_error_code) {
PUSHQ(esp, error_code);
}
-
+
if (new_stack) {
ss = 0 | dpl;
cpu_x86_load_seg_cache(env, R_SS, ss, 0, 0, 0);
ESP = esp;
selector = (selector & ~3) | dpl;
- cpu_x86_load_seg_cache(env, R_CS, selector,
+ cpu_x86_load_seg_cache(env, R_CS, selector,
get_seg_base(e1, e2),
get_seg_limit(e1, e2),
e2);
selector = (env->star >> 32) & 0xffff;
#ifdef TARGET_X86_64
if (env->hflags & HF_LMA_MASK) {
+ int code64;
+
ECX = env->eip + next_eip_addend;
env->regs[11] = compute_eflags();
+ code64 = env->hflags & HF_CS64_MASK;
+
cpu_x86_set_cpl(env, 0);
- cpu_x86_load_seg_cache(env, R_CS, selector & 0xfffc,
- 0, 0xffffffff,
- DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
+ cpu_x86_load_seg_cache(env, R_CS, selector & 0xfffc,
+ 0, 0xffffffff,
+ DESC_G_MASK | DESC_P_MASK |
DESC_S_MASK |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK | DESC_L_MASK);
- cpu_x86_load_seg_cache(env, R_SS, (selector + 8) & 0xfffc,
+ cpu_x86_load_seg_cache(env, R_SS, (selector + 8) & 0xfffc,
0, 0xffffffff,
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
DESC_S_MASK |
DESC_W_MASK | DESC_A_MASK);
env->eflags &= ~env->fmask;
- if (env->hflags & HF_CS64_MASK)
+ if (code64)
env->eip = env->lstar;
else
env->eip = env->cstar;
- } else
+ } else
#endif
{
ECX = (uint32_t)(env->eip + next_eip_addend);
-
+
cpu_x86_set_cpl(env, 0);
- cpu_x86_load_seg_cache(env, R_CS, selector & 0xfffc,
- 0, 0xffffffff,
+ cpu_x86_load_seg_cache(env, R_CS, selector & 0xfffc,
+ 0, 0xffffffff,
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
DESC_S_MASK |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK);
- cpu_x86_load_seg_cache(env, R_SS, (selector + 8) & 0xfffc,
+ cpu_x86_load_seg_cache(env, R_SS, (selector + 8) & 0xfffc,
0, 0xffffffff,
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
DESC_S_MASK |
#ifdef TARGET_X86_64
if (env->hflags & HF_LMA_MASK) {
if (dflag == 2) {
- cpu_x86_load_seg_cache(env, R_CS, (selector + 16) | 3,
- 0, 0xffffffff,
- DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
+ cpu_x86_load_seg_cache(env, R_CS, (selector + 16) | 3,
+ 0, 0xffffffff,
+ DESC_G_MASK | DESC_P_MASK |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
- DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK |
+ DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK |
DESC_L_MASK);
env->eip = ECX;
} else {
- cpu_x86_load_seg_cache(env, R_CS, selector | 3,
- 0, 0xffffffff,
+ cpu_x86_load_seg_cache(env, R_CS, selector | 3,
+ 0, 0xffffffff,
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK);
env->eip = (uint32_t)ECX;
}
- cpu_x86_load_seg_cache(env, R_SS, selector + 8,
+ cpu_x86_load_seg_cache(env, R_SS, selector + 8,
0, 0xffffffff,
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
DESC_W_MASK | DESC_A_MASK);
- load_eflags((uint32_t)(env->regs[11]), TF_MASK | AC_MASK | ID_MASK |
+ load_eflags((uint32_t)(env->regs[11]), TF_MASK | AC_MASK | ID_MASK |
IF_MASK | IOPL_MASK | VM_MASK | RF_MASK | NT_MASK);
cpu_x86_set_cpl(env, 3);
- } else
+ } else
#endif
{
- cpu_x86_load_seg_cache(env, R_CS, selector | 3,
- 0, 0xffffffff,
+ cpu_x86_load_seg_cache(env, R_CS, selector | 3,
+ 0, 0xffffffff,
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK);
env->eip = (uint32_t)ECX;
- cpu_x86_load_seg_cache(env, R_SS, selector + 8,
+ cpu_x86_load_seg_cache(env, R_SS, selector + 8,
0, 0xffffffff,
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
PUSHW(ssp, esp, 0xffff, compute_eflags());
PUSHW(ssp, esp, 0xffff, old_cs);
PUSHW(ssp, esp, 0xffff, old_eip);
-
+
/* update processor state */
ESP = (ESP & ~0xffff) | (esp & 0xffff);
env->eip = offset;
}
/* fake user mode interrupt */
-void do_interrupt_user(int intno, int is_int, int error_code,
+void do_interrupt_user(int intno, int is_int, int error_code,
target_ulong next_eip)
{
SegmentCache *dt;
dt = &env->idt;
ptr = dt->base + (intno * 8);
e2 = ldl_kernel(ptr + 4);
-
+
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
cpl = env->hflags & HF_CPL_MASK;
/* check privledge if software int */
/*
* Begin execution of an interruption. is_int is TRUE if coming from
* the int instruction. next_eip is the EIP value AFTER the interrupt
- * instruction. It is only relevant if is_int is TRUE.
+ * instruction. It is only relevant if is_int is TRUE.
*/
-void do_interrupt(int intno, int is_int, int error_code,
+void do_interrupt(int intno, int is_int, int error_code,
target_ulong next_eip, int is_hw)
{
-#ifdef DEBUG_PCALL
- if (loglevel & (CPU_LOG_PCALL | CPU_LOG_INT)) {
+ if (loglevel & CPU_LOG_INT) {
if ((env->cr[0] & CR0_PE_MASK)) {
static int count;
fprintf(logfile, "%6d: v=%02x e=%04x i=%d cpl=%d IP=%04x:" TARGET_FMT_lx " pc=" TARGET_FMT_lx " SP=%04x:" TARGET_FMT_lx,
fprintf(logfile, " EAX=" TARGET_FMT_lx, EAX);
}
fprintf(logfile, "\n");
-#if 0
cpu_dump_state(env, logfile, fprintf, X86_DUMP_CCOP);
+#if 0
{
int i;
uint8_t *ptr;
count++;
}
}
-#endif
if (env->cr[0] & CR0_PE_MASK) {
#if TARGET_X86_64
if (env->hflags & HF_LMA_MASK) {
}
}
+/*
+ * Check nested exceptions and change to double or triple fault if
+ * needed. It should only be called, if this is not an interrupt.
+ * Returns the new exception number.
+ */
+int check_exception(int intno, int *error_code)
+{
+ char first_contributory = env->old_exception == 0 ||
+ (env->old_exception >= 10 &&
+ env->old_exception <= 13);
+ char second_contributory = intno == 0 ||
+ (intno >= 10 && intno <= 13);
+
+ if (loglevel & CPU_LOG_INT)
+ fprintf(logfile, "check_exception old: %x new %x\n",
+ env->old_exception, intno);
+
+ if (env->old_exception == EXCP08_DBLE)
+ cpu_abort(env, "triple fault");
+
+ if ((first_contributory && second_contributory)
+ || (env->old_exception == EXCP0E_PAGE &&
+ (second_contributory || (intno == EXCP0E_PAGE)))) {
+ intno = EXCP08_DBLE;
+ *error_code = 0;
+ }
+
+ if (second_contributory || (intno == EXCP0E_PAGE) ||
+ (intno == EXCP08_DBLE))
+ env->old_exception = intno;
+
+ return intno;
+}
+
/*
* Signal an interruption. It is executed in the main CPU loop.
* is_int is TRUE if coming from the int instruction. next_eip is the
* EIP value AFTER the interrupt instruction. It is only relevant if
- * is_int is TRUE.
+ * is_int is TRUE.
*/
-void raise_interrupt(int intno, int is_int, int error_code,
+void raise_interrupt(int intno, int is_int, int error_code,
int next_eip_addend)
{
+ if (!is_int)
+ intno = check_exception(intno, &error_code);
+
env->exception_index = intno;
env->error_code = error_code;
env->exception_is_int = is_int;
/* same as raise_exception_err, but do not restore global registers */
static void raise_exception_err_norestore(int exception_index, int error_code)
{
+ exception_index = check_exception(exception_index, &error_code);
+
env->exception_index = exception_index;
env->error_code = error_code;
env->exception_is_int = 0;
raise_interrupt(exception_index, 0, 0, 0);
}
+/* SMM support */
+
+#if defined(CONFIG_USER_ONLY)
+
+void do_smm_enter(void)
+{
+}
+
+void helper_rsm(void)
+{
+}
+
+#else
+
+#ifdef TARGET_X86_64
+#define SMM_REVISION_ID 0x00020064
+#else
+#define SMM_REVISION_ID 0x00020000
+#endif
+
+void do_smm_enter(void)
+{
+ target_ulong sm_state;
+ SegmentCache *dt;
+ int i, offset;
+
+ if (loglevel & CPU_LOG_INT) {
+ fprintf(logfile, "SMM: enter\n");
+ cpu_dump_state(env, logfile, fprintf, X86_DUMP_CCOP);
+ }
+
+ env->hflags |= HF_SMM_MASK;
+ cpu_smm_update(env);
+
+ sm_state = env->smbase + 0x8000;
+
+#ifdef TARGET_X86_64
+ for(i = 0; i < 6; i++) {
+ dt = &env->segs[i];
+ offset = 0x7e00 + i * 16;
+ stw_phys(sm_state + offset, dt->selector);
+ stw_phys(sm_state + offset + 2, (dt->flags >> 8) & 0xf0ff);
+ stl_phys(sm_state + offset + 4, dt->limit);
+ stq_phys(sm_state + offset + 8, dt->base);
+ }
+
+ stq_phys(sm_state + 0x7e68, env->gdt.base);
+ stl_phys(sm_state + 0x7e64, env->gdt.limit);
+
+ stw_phys(sm_state + 0x7e70, env->ldt.selector);
+ stq_phys(sm_state + 0x7e78, env->ldt.base);
+ stl_phys(sm_state + 0x7e74, env->ldt.limit);
+ stw_phys(sm_state + 0x7e72, (env->ldt.flags >> 8) & 0xf0ff);
+
+ stq_phys(sm_state + 0x7e88, env->idt.base);
+ stl_phys(sm_state + 0x7e84, env->idt.limit);
+
+ stw_phys(sm_state + 0x7e90, env->tr.selector);
+ stq_phys(sm_state + 0x7e98, env->tr.base);
+ stl_phys(sm_state + 0x7e94, env->tr.limit);
+ stw_phys(sm_state + 0x7e92, (env->tr.flags >> 8) & 0xf0ff);
+
+ stq_phys(sm_state + 0x7ed0, env->efer);
+
+ stq_phys(sm_state + 0x7ff8, EAX);
+ stq_phys(sm_state + 0x7ff0, ECX);
+ stq_phys(sm_state + 0x7fe8, EDX);
+ stq_phys(sm_state + 0x7fe0, EBX);
+ stq_phys(sm_state + 0x7fd8, ESP);
+ stq_phys(sm_state + 0x7fd0, EBP);
+ stq_phys(sm_state + 0x7fc8, ESI);
+ stq_phys(sm_state + 0x7fc0, EDI);
+ for(i = 8; i < 16; i++)
+ stq_phys(sm_state + 0x7ff8 - i * 8, env->regs[i]);
+ stq_phys(sm_state + 0x7f78, env->eip);
+ stl_phys(sm_state + 0x7f70, compute_eflags());
+ stl_phys(sm_state + 0x7f68, env->dr[6]);
+ stl_phys(sm_state + 0x7f60, env->dr[7]);
+
+ stl_phys(sm_state + 0x7f48, env->cr[4]);
+ stl_phys(sm_state + 0x7f50, env->cr[3]);
+ stl_phys(sm_state + 0x7f58, env->cr[0]);
+
+ stl_phys(sm_state + 0x7efc, SMM_REVISION_ID);
+ stl_phys(sm_state + 0x7f00, env->smbase);
+#else
+ stl_phys(sm_state + 0x7ffc, env->cr[0]);
+ stl_phys(sm_state + 0x7ff8, env->cr[3]);
+ stl_phys(sm_state + 0x7ff4, compute_eflags());
+ stl_phys(sm_state + 0x7ff0, env->eip);
+ stl_phys(sm_state + 0x7fec, EDI);
+ stl_phys(sm_state + 0x7fe8, ESI);
+ stl_phys(sm_state + 0x7fe4, EBP);
+ stl_phys(sm_state + 0x7fe0, ESP);
+ stl_phys(sm_state + 0x7fdc, EBX);
+ stl_phys(sm_state + 0x7fd8, EDX);
+ stl_phys(sm_state + 0x7fd4, ECX);
+ stl_phys(sm_state + 0x7fd0, EAX);
+ stl_phys(sm_state + 0x7fcc, env->dr[6]);
+ stl_phys(sm_state + 0x7fc8, env->dr[7]);
+
+ stl_phys(sm_state + 0x7fc4, env->tr.selector);
+ stl_phys(sm_state + 0x7f64, env->tr.base);
+ stl_phys(sm_state + 0x7f60, env->tr.limit);
+ stl_phys(sm_state + 0x7f5c, (env->tr.flags >> 8) & 0xf0ff);
+
+ stl_phys(sm_state + 0x7fc0, env->ldt.selector);
+ stl_phys(sm_state + 0x7f80, env->ldt.base);
+ stl_phys(sm_state + 0x7f7c, env->ldt.limit);
+ stl_phys(sm_state + 0x7f78, (env->ldt.flags >> 8) & 0xf0ff);
+
+ stl_phys(sm_state + 0x7f74, env->gdt.base);
+ stl_phys(sm_state + 0x7f70, env->gdt.limit);
+
+ stl_phys(sm_state + 0x7f58, env->idt.base);
+ stl_phys(sm_state + 0x7f54, env->idt.limit);
+
+ for(i = 0; i < 6; i++) {
+ dt = &env->segs[i];
+ if (i < 3)
+ offset = 0x7f84 + i * 12;
+ else
+ offset = 0x7f2c + (i - 3) * 12;
+ stl_phys(sm_state + 0x7fa8 + i * 4, dt->selector);
+ stl_phys(sm_state + offset + 8, dt->base);
+ stl_phys(sm_state + offset + 4, dt->limit);
+ stl_phys(sm_state + offset, (dt->flags >> 8) & 0xf0ff);
+ }
+ stl_phys(sm_state + 0x7f14, env->cr[4]);
+
+ stl_phys(sm_state + 0x7efc, SMM_REVISION_ID);
+ stl_phys(sm_state + 0x7ef8, env->smbase);
+#endif
+ /* init SMM cpu state */
+
+#ifdef TARGET_X86_64
+ env->efer = 0;
+ env->hflags &= ~HF_LMA_MASK;
+#endif
+ load_eflags(0, ~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK));
+ env->eip = 0x00008000;
+ cpu_x86_load_seg_cache(env, R_CS, (env->smbase >> 4) & 0xffff, env->smbase,
+ 0xffffffff, 0);
+ cpu_x86_load_seg_cache(env, R_DS, 0, 0, 0xffffffff, 0);
+ cpu_x86_load_seg_cache(env, R_ES, 0, 0, 0xffffffff, 0);
+ cpu_x86_load_seg_cache(env, R_SS, 0, 0, 0xffffffff, 0);
+ cpu_x86_load_seg_cache(env, R_FS, 0, 0, 0xffffffff, 0);
+ cpu_x86_load_seg_cache(env, R_GS, 0, 0, 0xffffffff, 0);
+
+ cpu_x86_update_cr0(env,
+ env->cr[0] & ~(CR0_PE_MASK | CR0_EM_MASK | CR0_TS_MASK | CR0_PG_MASK));
+ cpu_x86_update_cr4(env, 0);
+ env->dr[7] = 0x00000400;
+ CC_OP = CC_OP_EFLAGS;
+}
+
+void helper_rsm(void)
+{
+ target_ulong sm_state;
+ int i, offset;
+ uint32_t val;
+
+ sm_state = env->smbase + 0x8000;
+#ifdef TARGET_X86_64
+ env->efer = ldq_phys(sm_state + 0x7ed0);
+ if (env->efer & MSR_EFER_LMA)
+ env->hflags |= HF_LMA_MASK;
+ else
+ env->hflags &= ~HF_LMA_MASK;
+
+ for(i = 0; i < 6; i++) {
+ offset = 0x7e00 + i * 16;
+ cpu_x86_load_seg_cache(env, i,
+ lduw_phys(sm_state + offset),
+ ldq_phys(sm_state + offset + 8),
+ ldl_phys(sm_state + offset + 4),
+ (lduw_phys(sm_state + offset + 2) & 0xf0ff) << 8);
+ }
+
+ env->gdt.base = ldq_phys(sm_state + 0x7e68);
+ env->gdt.limit = ldl_phys(sm_state + 0x7e64);
+
+ env->ldt.selector = lduw_phys(sm_state + 0x7e70);
+ env->ldt.base = ldq_phys(sm_state + 0x7e78);
+ env->ldt.limit = ldl_phys(sm_state + 0x7e74);
+ env->ldt.flags = (lduw_phys(sm_state + 0x7e72) & 0xf0ff) << 8;
+
+ env->idt.base = ldq_phys(sm_state + 0x7e88);
+ env->idt.limit = ldl_phys(sm_state + 0x7e84);
+
+ env->tr.selector = lduw_phys(sm_state + 0x7e90);
+ env->tr.base = ldq_phys(sm_state + 0x7e98);
+ env->tr.limit = ldl_phys(sm_state + 0x7e94);
+ env->tr.flags = (lduw_phys(sm_state + 0x7e92) & 0xf0ff) << 8;
+
+ EAX = ldq_phys(sm_state + 0x7ff8);
+ ECX = ldq_phys(sm_state + 0x7ff0);
+ EDX = ldq_phys(sm_state + 0x7fe8);
+ EBX = ldq_phys(sm_state + 0x7fe0);
+ ESP = ldq_phys(sm_state + 0x7fd8);
+ EBP = ldq_phys(sm_state + 0x7fd0);
+ ESI = ldq_phys(sm_state + 0x7fc8);
+ EDI = ldq_phys(sm_state + 0x7fc0);
+ for(i = 8; i < 16; i++)
+ env->regs[i] = ldq_phys(sm_state + 0x7ff8 - i * 8);
+ env->eip = ldq_phys(sm_state + 0x7f78);
+ load_eflags(ldl_phys(sm_state + 0x7f70),
+ ~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK));
+ env->dr[6] = ldl_phys(sm_state + 0x7f68);
+ env->dr[7] = ldl_phys(sm_state + 0x7f60);
+
+ cpu_x86_update_cr4(env, ldl_phys(sm_state + 0x7f48));
+ cpu_x86_update_cr3(env, ldl_phys(sm_state + 0x7f50));
+ cpu_x86_update_cr0(env, ldl_phys(sm_state + 0x7f58));
+
+ val = ldl_phys(sm_state + 0x7efc); /* revision ID */
+ if (val & 0x20000) {
+ env->smbase = ldl_phys(sm_state + 0x7f00) & ~0x7fff;
+ }
+#else
+ cpu_x86_update_cr0(env, ldl_phys(sm_state + 0x7ffc));
+ cpu_x86_update_cr3(env, ldl_phys(sm_state + 0x7ff8));
+ load_eflags(ldl_phys(sm_state + 0x7ff4),
+ ~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK));
+ env->eip = ldl_phys(sm_state + 0x7ff0);
+ EDI = ldl_phys(sm_state + 0x7fec);
+ ESI = ldl_phys(sm_state + 0x7fe8);
+ EBP = ldl_phys(sm_state + 0x7fe4);
+ ESP = ldl_phys(sm_state + 0x7fe0);
+ EBX = ldl_phys(sm_state + 0x7fdc);
+ EDX = ldl_phys(sm_state + 0x7fd8);
+ ECX = ldl_phys(sm_state + 0x7fd4);
+ EAX = ldl_phys(sm_state + 0x7fd0);
+ env->dr[6] = ldl_phys(sm_state + 0x7fcc);
+ env->dr[7] = ldl_phys(sm_state + 0x7fc8);
+
+ env->tr.selector = ldl_phys(sm_state + 0x7fc4) & 0xffff;
+ env->tr.base = ldl_phys(sm_state + 0x7f64);
+ env->tr.limit = ldl_phys(sm_state + 0x7f60);
+ env->tr.flags = (ldl_phys(sm_state + 0x7f5c) & 0xf0ff) << 8;
+
+ env->ldt.selector = ldl_phys(sm_state + 0x7fc0) & 0xffff;
+ env->ldt.base = ldl_phys(sm_state + 0x7f80);
+ env->ldt.limit = ldl_phys(sm_state + 0x7f7c);
+ env->ldt.flags = (ldl_phys(sm_state + 0x7f78) & 0xf0ff) << 8;
+
+ env->gdt.base = ldl_phys(sm_state + 0x7f74);
+ env->gdt.limit = ldl_phys(sm_state + 0x7f70);
+
+ env->idt.base = ldl_phys(sm_state + 0x7f58);
+ env->idt.limit = ldl_phys(sm_state + 0x7f54);
+
+ for(i = 0; i < 6; i++) {
+ if (i < 3)
+ offset = 0x7f84 + i * 12;
+ else
+ offset = 0x7f2c + (i - 3) * 12;
+ cpu_x86_load_seg_cache(env, i,
+ ldl_phys(sm_state + 0x7fa8 + i * 4) & 0xffff,
+ ldl_phys(sm_state + offset + 8),
+ ldl_phys(sm_state + offset + 4),
+ (ldl_phys(sm_state + offset) & 0xf0ff) << 8);
+ }
+ cpu_x86_update_cr4(env, ldl_phys(sm_state + 0x7f14));
+
+ val = ldl_phys(sm_state + 0x7efc); /* revision ID */
+ if (val & 0x20000) {
+ env->smbase = ldl_phys(sm_state + 0x7ef8) & ~0x7fff;
+ }
+#endif
+ CC_OP = CC_OP_EFLAGS;
+ env->hflags &= ~HF_SMM_MASK;
+ cpu_smm_update(env);
+
+ if (loglevel & CPU_LOG_INT) {
+ fprintf(logfile, "SMM: after RSM\n");
+ cpu_dump_state(env, logfile, fprintf, X86_DUMP_CCOP);
+ }
+}
+
+#endif /* !CONFIG_USER_ONLY */
+
+
#ifdef BUGGY_GCC_DIV64
/* gcc 2.95.4 on PowerPC does not seem to like using __udivdi3, so we
call it from another function */
-uint32_t div32(uint32_t *q_ptr, uint64_t num, uint32_t den)
+uint32_t div32(uint64_t *q_ptr, uint64_t num, uint32_t den)
{
*q_ptr = num / den;
return num % den;
}
-int32_t idiv32(int32_t *q_ptr, int64_t num, int32_t den)
+int32_t idiv32(int64_t *q_ptr, int64_t num, int32_t den)
{
*q_ptr = num / den;
return num % den;
void helper_divl_EAX_T0(void)
{
- unsigned int den, q, r;
- uint64_t num;
-
+ unsigned int den, r;
+ uint64_t num, q;
+
num = ((uint32_t)EAX) | ((uint64_t)((uint32_t)EDX) << 32);
den = T0;
if (den == 0) {
q = (num / den);
r = (num % den);
#endif
+ if (q > 0xffffffff)
+ raise_exception(EXCP00_DIVZ);
EAX = (uint32_t)q;
EDX = (uint32_t)r;
}
void helper_idivl_EAX_T0(void)
{
- int den, q, r;
- int64_t num;
-
+ int den, r;
+ int64_t num, q;
+
num = ((uint32_t)EAX) | ((uint64_t)((uint32_t)EDX) << 32);
den = T0;
if (den == 0) {
q = (num / den);
r = (num % den);
#endif
+ if (q != (int32_t)q)
+ raise_exception(EXCP00_DIVZ);
EAX = (uint32_t)q;
EDX = (uint32_t)r;
}
CC_SRC = eflags;
}
+void helper_single_step()
+{
+ env->dr[6] |= 0x4000;
+ raise_exception(EXCP01_SSTP);
+}
+
void helper_cpuid(void)
{
uint32_t index;
index = (uint32_t)EAX;
-
+
/* test if maximum index reached */
if (index & 0x80000000) {
- if (index > env->cpuid_xlevel)
+ if (index > env->cpuid_xlevel)
index = env->cpuid_level;
} else {
- if (index > env->cpuid_level)
+ if (index > env->cpuid_level)
index = env->cpuid_level;
}
-
+
switch(index) {
case 0:
EAX = env->cpuid_level;
break;
case 1:
EAX = env->cpuid_version;
- EBX = 0;
+ EBX = (env->cpuid_apic_id << 24) | 8 << 8; /* CLFLUSH size in quad words, Linux wants it. */
ECX = env->cpuid_ext_features;
EDX = env->cpuid_features;
break;
case 2:
/* cache info: needed for Pentium Pro compatibility */
- EAX = 0x410601;
+ EAX = 1;
EBX = 0;
ECX = 0;
- EDX = 0;
+ EDX = 0x2c307d;
break;
case 0x80000000:
EAX = env->cpuid_xlevel;
uint32_t e1, e2;
int index, entry_limit;
target_ulong ptr;
-
+
selector = T0 & 0xffff;
if ((selector & 0xfffc) == 0) {
/* XXX: NULL selector case: invalid LDT */
if (env->hflags & HF_LMA_MASK)
entry_limit = 15;
else
-#endif
+#endif
entry_limit = 7;
if ((index + entry_limit) > dt->limit)
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
uint32_t e1, e2;
int index, type, entry_limit;
target_ulong ptr;
-
+
selector = T0 & 0xffff;
if ((selector & 0xfffc) == 0) {
/* NULL selector case: invalid TR */
if (env->hflags & HF_LMA_MASK)
entry_limit = 15;
else
-#endif
+#endif
entry_limit = 7;
if ((index + entry_limit) > dt->limit)
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
e1 = ldl_kernel(ptr);
e2 = ldl_kernel(ptr + 4);
type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
- if ((e2 & DESC_S_MASK) ||
+ if ((e2 & DESC_S_MASK) ||
(type != 1 && type != 9))
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
if (!(e2 & DESC_P_MASK))
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
#ifdef TARGET_X86_64
if (env->hflags & HF_LMA_MASK) {
- uint32_t e3;
+ uint32_t e3, e4;
e3 = ldl_kernel(ptr + 8);
+ e4 = ldl_kernel(ptr + 12);
+ if ((e4 >> DESC_TYPE_SHIFT) & 0xf)
+ raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
load_seg_cache_raw_dt(&env->tr, e1, e2);
env->tr.base |= (target_ulong)e3 << 32;
- } else
+ } else
#endif
{
load_seg_cache_raw_dt(&env->tr, e1, e2);
raise_exception_err(EXCP0D_GPF, 0);
cpu_x86_load_seg_cache(env, seg_reg, selector, 0, 0, 0);
} else {
-
+
if (selector & 0x4)
dt = &env->ldt;
else
ptr = dt->base + index;
e1 = ldl_kernel(ptr);
e2 = ldl_kernel(ptr + 4);
-
+
if (!(e2 & DESC_S_MASK))
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
rpl = selector & 3;
/* must be readable segment */
if ((e2 & (DESC_CS_MASK | DESC_R_MASK)) == DESC_CS_MASK)
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
-
+
if (!(e2 & DESC_CS_MASK) || !(e2 & DESC_C_MASK)) {
/* if not conforming code, test rights */
if (dpl < cpl || dpl < rpl)
stl_kernel(ptr + 4, e2);
}
- cpu_x86_load_seg_cache(env, seg_reg, selector,
+ cpu_x86_load_seg_cache(env, seg_reg, selector,
get_seg_base(e1, e2),
get_seg_limit(e1, e2),
e2);
#if 0
- fprintf(logfile, "load_seg: sel=0x%04x base=0x%08lx limit=0x%08lx flags=%08x\n",
+ fprintf(logfile, "load_seg: sel=0x%04x base=0x%08lx limit=0x%08lx flags=%08x\n",
selector, (unsigned long)sc->base, sc->limit, sc->flags);
#endif
}
int new_cs, gate_cs, type;
uint32_t e1, e2, cpl, dpl, rpl, limit;
target_ulong new_eip, next_eip;
-
+
new_cs = T0;
new_eip = T1;
if ((new_cs & 0xfffc) == 0)
if (!(e2 & DESC_P_MASK))
raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
limit = get_seg_limit(e1, e2);
- if (new_eip > limit &&
+ if (new_eip > limit &&
!(env->hflags & HF_LMA_MASK) && !(e2 & DESC_L_MASK))
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
cpu_x86_load_seg_cache(env, R_CS, (new_cs & 0xfffc) | cpl,
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
next_eip = env->eip + next_eip_addend;
switch_tss(new_cs, e1, e2, SWITCH_TSS_JMP, next_eip);
+ CC_OP = CC_OP_EFLAGS;
break;
case 4: /* 286 call gate */
case 12: /* 386 call gate */
raise_exception_err(EXCP0D_GPF, gate_cs & 0xfffc);
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
/* must be code segment */
- if (((e2 & (DESC_S_MASK | DESC_CS_MASK)) !=
+ if (((e2 & (DESC_S_MASK | DESC_CS_MASK)) !=
(DESC_S_MASK | DESC_CS_MASK)))
raise_exception_err(EXCP0D_GPF, gate_cs & 0xfffc);
- if (((e2 & DESC_C_MASK) && (dpl > cpl)) ||
+ if (((e2 & DESC_C_MASK) && (dpl > cpl)) ||
(!(e2 & DESC_C_MASK) && (dpl != cpl)))
raise_exception_err(EXCP0D_GPF, gate_cs & 0xfffc);
if (!(e2 & DESC_P_MASK))
PUSHW(ssp, esp, esp_mask, next_eip);
}
- ESP = (ESP & ~esp_mask) | (esp & esp_mask);
+ SET_ESP(esp, esp_mask);
env->eip = new_eip;
env->segs[R_CS].selector = new_cs;
env->segs[R_CS].base = (new_cs << 4);
/* protected mode call */
void helper_lcall_protected_T0_T1(int shift, int next_eip_addend)
{
- int new_cs, new_eip, new_stack, i;
+ int new_cs, new_stack, i;
uint32_t e1, e2, cpl, dpl, rpl, selector, offset, param_count;
uint32_t ss, ss_e1, ss_e2, sp, type, ss_dpl, sp_mask;
uint32_t val, limit, old_sp_mask;
- target_ulong ssp, old_ssp, next_eip;
-
+ target_ulong ssp, old_ssp, next_eip, new_eip;
+
new_cs = T0;
new_eip = T1;
next_eip = env->eip + next_eip_addend;
#ifdef DEBUG_PCALL
if (loglevel & CPU_LOG_PCALL) {
fprintf(logfile, "lcall %04x:%08x s=%d\n",
- new_cs, new_eip, shift);
+ new_cs, (uint32_t)new_eip, shift);
cpu_dump_state(env, logfile, fprintf, X86_DUMP_CCOP);
}
#endif
/* from this point, not restartable */
ESP = rsp;
cpu_x86_load_seg_cache(env, R_CS, (new_cs & 0xfffc) | cpl,
- get_seg_base(e1, e2),
+ get_seg_base(e1, e2),
get_seg_limit(e1, e2), e2);
EIP = new_eip;
- } else
+ } else
#endif
{
sp = ESP;
PUSHW(ssp, sp, sp_mask, env->segs[R_CS].selector);
PUSHW(ssp, sp, sp_mask, next_eip);
}
-
+
limit = get_seg_limit(e1, e2);
if (new_eip > limit)
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
/* from this point, not restartable */
- ESP = (ESP & ~sp_mask) | (sp & sp_mask);
+ SET_ESP(sp, sp_mask);
cpu_x86_load_seg_cache(env, R_CS, (new_cs & 0xfffc) | cpl,
get_seg_base(e1, e2), limit, e2);
EIP = new_eip;
if (dpl < cpl || dpl < rpl)
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
switch_tss(new_cs, e1, e2, SWITCH_TSS_CALL, next_eip);
+ CC_OP = CC_OP_EFLAGS;
return;
case 4: /* 286 call gate */
case 12: /* 386 call gate */
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
if (!(e2 & DESC_C_MASK) && dpl < cpl) {
- /* to inner priviledge */
+ /* to inner privilege */
get_ss_esp_from_tss(&ss, &sp, dpl);
#ifdef DEBUG_PCALL
if (loglevel & CPU_LOG_PCALL)
- fprintf(logfile, "new ss:esp=%04x:%08x param_count=%d ESP=" TARGET_FMT_lx "\n",
+ fprintf(logfile, "new ss:esp=%04x:%08x param_count=%d ESP=" TARGET_FMT_lx "\n",
ss, sp, param_count, ESP);
#endif
if ((ss & 0xfffc) == 0)
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
if (!(ss_e2 & DESC_P_MASK))
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
-
+
// push_size = ((param_count * 2) + 8) << shift;
old_sp_mask = get_sp_mask(env->segs[R_SS].flags);
old_ssp = env->segs[R_SS].base;
-
+
sp_mask = get_sp_mask(ss_e2);
ssp = get_seg_base(ss_e1, ss_e2);
if (shift) {
}
new_stack = 1;
} else {
- /* to same priviledge */
+ /* to same privilege */
sp = ESP;
sp_mask = get_sp_mask(env->segs[R_SS].flags);
ssp = env->segs[R_SS].base;
if (new_stack) {
ss = (ss & ~3) | dpl;
- cpu_x86_load_seg_cache(env, R_SS, ss,
+ cpu_x86_load_seg_cache(env, R_SS, ss,
ssp,
get_seg_limit(ss_e1, ss_e2),
ss_e2);
}
selector = (selector & ~3) | dpl;
- cpu_x86_load_seg_cache(env, R_CS, selector,
+ cpu_x86_load_seg_cache(env, R_CS, selector,
get_seg_base(e1, e2),
get_seg_limit(e1, e2),
e2);
cpu_x86_set_cpl(env, dpl);
- ESP = (ESP & ~sp_mask) | (sp & sp_mask);
+ SET_ESP(sp, sp_mask);
EIP = offset;
}
#ifdef USE_KQEMU
{
int dpl;
uint32_t e2;
-
+
+ /* XXX: on x86_64, we do not want to nullify FS and GS because
+ they may still contain a valid base. I would be interested to
+ know how a real x86_64 CPU behaves */
+ if ((seg_reg == R_FS || seg_reg == R_GS) &&
+ (env->segs[seg_reg].selector & 0xfffc) == 0)
+ return;
+
e2 = env->segs[seg_reg].flags;
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
if (!(e2 & DESC_CS_MASK) || !(e2 & DESC_C_MASK)) {
uint32_t e1, e2, ss_e1, ss_e2;
int cpl, dpl, rpl, eflags_mask, iopl;
target_ulong ssp, sp, new_eip, new_esp, sp_mask;
-
+
#ifdef TARGET_X86_64
if (shift == 2)
sp_mask = -1;
#endif
sp_mask = get_sp_mask(env->segs[R_SS].flags);
sp = ESP;
- /* XXX: ssp is zero in 64 bit ? */
ssp = env->segs[R_SS].base;
new_eflags = 0; /* avoid warning */
#ifdef TARGET_X86_64
!(e2 & DESC_CS_MASK))
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
cpl = env->hflags & HF_CPL_MASK;
- rpl = new_cs & 3;
+ rpl = new_cs & 3;
if (rpl < cpl)
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
}
if (!(e2 & DESC_P_MASK))
raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
-
+
sp += addend;
- if (rpl == cpl && (!(env->hflags & HF_CS64_MASK) ||
+ if (rpl == cpl && (!(env->hflags & HF_CS64_MASK) ||
((env->hflags & HF_CS64_MASK) && !is_iret))) {
/* return to same priledge level */
- cpu_x86_load_seg_cache(env, R_CS, new_cs,
+ cpu_x86_load_seg_cache(env, R_CS, new_cs,
get_seg_base(e1, e2),
get_seg_limit(e1, e2),
e2);
} else {
- /* return to different priviledge level */
+ /* return to different privilege level */
#ifdef TARGET_X86_64
if (shift == 2) {
POPQ(sp, new_esp);
if ((new_ss & 0xfffc) == 0) {
#ifdef TARGET_X86_64
/* NULL ss is allowed in long mode if cpl != 3*/
+ /* XXX: test CS64 ? */
if ((env->hflags & HF_LMA_MASK) && rpl != 3) {
- cpu_x86_load_seg_cache(env, R_SS, new_ss,
+ cpu_x86_load_seg_cache(env, R_SS, new_ss,
0, 0xffffffff,
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
DESC_S_MASK | (rpl << DESC_DPL_SHIFT) |
DESC_W_MASK | DESC_A_MASK);
- } else
+ ss_e2 = DESC_B_MASK; /* XXX: should not be needed ? */
+ } else
#endif
{
raise_exception_err(EXCP0D_GPF, 0);
raise_exception_err(EXCP0D_GPF, new_ss & 0xfffc);
if (!(ss_e2 & DESC_P_MASK))
raise_exception_err(EXCP0B_NOSEG, new_ss & 0xfffc);
- cpu_x86_load_seg_cache(env, R_SS, new_ss,
+ cpu_x86_load_seg_cache(env, R_SS, new_ss,
get_seg_base(ss_e1, ss_e2),
get_seg_limit(ss_e1, ss_e2),
ss_e2);
}
- cpu_x86_load_seg_cache(env, R_CS, new_cs,
+ cpu_x86_load_seg_cache(env, R_CS, new_cs,
get_seg_base(e1, e2),
get_seg_limit(e1, e2),
e2);
cpu_x86_set_cpl(env, rpl);
sp = new_esp;
#ifdef TARGET_X86_64
- if (shift == 2)
+ if (env->hflags & HF_CS64_MASK)
sp_mask = -1;
else
#endif
sp_mask = get_sp_mask(ss_e2);
/* validate data segments */
- validate_seg(R_ES, cpl);
- validate_seg(R_DS, cpl);
- validate_seg(R_FS, cpl);
- validate_seg(R_GS, cpl);
+ validate_seg(R_ES, rpl);
+ validate_seg(R_DS, rpl);
+ validate_seg(R_FS, rpl);
+ validate_seg(R_GS, rpl);
sp += addend;
}
- ESP = (ESP & ~sp_mask) | (sp & sp_mask);
+ SET_ESP(sp, sp_mask);
env->eip = new_eip;
if (is_iret) {
/* NOTE: 'cpl' is the _old_ CPL */
POPL(ssp, sp, sp_mask, new_ds);
POPL(ssp, sp, sp_mask, new_fs);
POPL(ssp, sp, sp_mask, new_gs);
-
+
/* modify processor state */
- load_eflags(new_eflags, TF_MASK | AC_MASK | ID_MASK |
+ load_eflags(new_eflags, TF_MASK | AC_MASK | ID_MASK |
IF_MASK | IOPL_MASK | VM_MASK | NT_MASK | VIF_MASK | VIP_MASK);
load_seg_vm(R_CS, new_cs & 0xffff);
cpu_x86_set_cpl(env, 3);
{
int tss_selector, type;
uint32_t e1, e2;
-
+
/* specific case for TSS */
if (env->eflags & NT_MASK) {
#ifdef TARGET_X86_64
}
env->eflags &= ~(VM_MASK | IF_MASK | RF_MASK);
cpu_x86_set_cpl(env, 0);
- cpu_x86_load_seg_cache(env, R_CS, env->sysenter_cs & 0xfffc,
- 0, 0xffffffff,
+ cpu_x86_load_seg_cache(env, R_CS, env->sysenter_cs & 0xfffc,
+ 0, 0xffffffff,
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
DESC_S_MASK |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK);
- cpu_x86_load_seg_cache(env, R_SS, (env->sysenter_cs + 8) & 0xfffc,
+ cpu_x86_load_seg_cache(env, R_SS, (env->sysenter_cs + 8) & 0xfffc,
0, 0xffffffff,
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
DESC_S_MASK |
raise_exception_err(EXCP0D_GPF, 0);
}
cpu_x86_set_cpl(env, 3);
- cpu_x86_load_seg_cache(env, R_CS, ((env->sysenter_cs + 16) & 0xfffc) | 3,
- 0, 0xffffffff,
+ cpu_x86_load_seg_cache(env, R_CS, ((env->sysenter_cs + 16) & 0xfffc) | 3,
+ 0, 0xffffffff,
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK);
- cpu_x86_load_seg_cache(env, R_SS, ((env->sysenter_cs + 24) & 0xfffc) | 3,
+ cpu_x86_load_seg_cache(env, R_SS, ((env->sysenter_cs + 24) & 0xfffc) | 3,
0, 0xffffffff,
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
void helper_movl_crN_T0(int reg)
{
-#if !defined(CONFIG_USER_ONLY)
+#if !defined(CONFIG_USER_ONLY)
switch(reg) {
case 0:
cpu_x86_update_cr0(env, T0);
void helper_rdtsc(void)
{
uint64_t val;
-
+
+ if ((env->cr[4] & CR4_TSD_MASK) && ((env->hflags & HF_CPL_MASK) != 0)) {
+ raise_exception(EXCP0D_GPF);
+ }
val = cpu_get_tsc(env);
EAX = (uint32_t)(val);
EDX = (uint32_t)(val >> 32);
}
-#if defined(CONFIG_USER_ONLY)
+#if defined(CONFIG_USER_ONLY)
void helper_wrmsr(void)
{
}
update_mask |= MSR_EFER_FFXSR;
if (env->cpuid_ext2_features & CPUID_EXT2_NX)
update_mask |= MSR_EFER_NXE;
- env->efer = (env->efer & ~update_mask) |
+ env->efer = (env->efer & ~update_mask) |
(val & update_mask);
}
break;
#endif
default:
/* XXX: exception ? */
- break;
+ break;
}
}
default:
/* XXX: exception ? */
val = 0;
- break;
+ break;
}
EAX = (uint32_t)(val);
EDX = (uint32_t)(val >> 32);
CPU86_LDouble helper_fdiv(CPU86_LDouble a, CPU86_LDouble b)
{
- if (b == 0.0)
+ if (b == 0.0)
fpu_set_exception(FPUS_ZE);
return a / b;
}
{
if (env->cr[0] & CR0_NE_MASK) {
raise_exception(EXCP10_COPR);
- }
-#if !defined(CONFIG_USER_ONLY)
+ }
+#if !defined(CONFIG_USER_ONLY)
else {
cpu_set_ferr(env);
}
void helper_fyl2x(void)
{
CPU86_LDouble fptemp;
-
+
fptemp = ST0;
if (fptemp>0.0){
fptemp = log(fptemp)/log(2.0); /* log2(ST) */
ST1 *= fptemp;
fpop();
- } else {
+ } else {
env->fpus &= (~0x4700);
env->fpus |= 0x400;
}
CPU86_LDouble dblq, fpsrcop, fptemp;
CPU86_LDoubleU fpsrcop1, fptemp1;
int expdif;
- int q;
+ signed long long int q;
+
+ if (isinf(ST0) || isnan(ST0) || isnan(ST1) || (ST1 == 0.0)) {
+ ST0 = 0.0 / 0.0; /* NaN */
+ env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
+ return;
+ }
fpsrcop = ST0;
fptemp = ST1;
fpsrcop1.d = fpsrcop;
fptemp1.d = fptemp;
expdif = EXPD(fpsrcop1) - EXPD(fptemp1);
+
+ if (expdif < 0) {
+ /* optimisation? taken from the AMD docs */
+ env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
+ /* ST0 is unchanged */
+ return;
+ }
+
if (expdif < 53) {
dblq = fpsrcop / fptemp;
- dblq = (dblq < 0.0)? ceil(dblq): floor(dblq);
- ST0 = fpsrcop - fptemp*dblq;
- q = (int)dblq; /* cutting off top bits is assumed here */
+ /* round dblq towards nearest integer */
+ dblq = rint(dblq);
+ ST0 = fpsrcop - fptemp * dblq;
+
+ /* convert dblq to q by truncating towards zero */
+ if (dblq < 0.0)
+ q = (signed long long int)(-dblq);
+ else
+ q = (signed long long int)dblq;
+
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
- /* (C0,C1,C3) <-- (q2,q1,q0) */
- env->fpus |= (q&0x4) << 6; /* (C0) <-- q2 */
- env->fpus |= (q&0x2) << 8; /* (C1) <-- q1 */
- env->fpus |= (q&0x1) << 14; /* (C3) <-- q0 */
+ /* (C0,C3,C1) <-- (q2,q1,q0) */
+ env->fpus |= (q & 0x4) << (8 - 2); /* (C0) <-- q2 */
+ env->fpus |= (q & 0x2) << (14 - 1); /* (C3) <-- q1 */
+ env->fpus |= (q & 0x1) << (9 - 0); /* (C1) <-- q0 */
} else {
env->fpus |= 0x400; /* C2 <-- 1 */
- fptemp = pow(2.0, expdif-50);
+ fptemp = pow(2.0, expdif - 50);
fpsrcop = (ST0 / ST1) / fptemp;
- /* fpsrcop = integer obtained by rounding to the nearest */
- fpsrcop = (fpsrcop-floor(fpsrcop) < ceil(fpsrcop)-fpsrcop)?
- floor(fpsrcop): ceil(fpsrcop);
+ /* fpsrcop = integer obtained by chopping */
+ fpsrcop = (fpsrcop < 0.0) ?
+ -(floor(fabs(fpsrcop))) : floor(fpsrcop);
ST0 -= (ST1 * fpsrcop * fptemp);
}
}
CPU86_LDouble dblq, fpsrcop, fptemp;
CPU86_LDoubleU fpsrcop1, fptemp1;
int expdif;
- int q;
-
- fpsrcop = ST0;
- fptemp = ST1;
+ signed long long int q;
+
+ if (isinf(ST0) || isnan(ST0) || isnan(ST1) || (ST1 == 0.0)) {
+ ST0 = 0.0 / 0.0; /* NaN */
+ env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
+ return;
+ }
+
+ fpsrcop = (CPU86_LDouble)ST0;
+ fptemp = (CPU86_LDouble)ST1;
fpsrcop1.d = fpsrcop;
fptemp1.d = fptemp;
expdif = EXPD(fpsrcop1) - EXPD(fptemp1);
+
+ if (expdif < 0) {
+ /* optimisation? taken from the AMD docs */
+ env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
+ /* ST0 is unchanged */
+ return;
+ }
+
if ( expdif < 53 ) {
- dblq = fpsrcop / fptemp;
- dblq = (dblq < 0.0)? ceil(dblq): floor(dblq);
- ST0 = fpsrcop - fptemp*dblq;
- q = (int)dblq; /* cutting off top bits is assumed here */
+ dblq = fpsrcop/*ST0*/ / fptemp/*ST1*/;
+ /* round dblq towards zero */
+ dblq = (dblq < 0.0) ? ceil(dblq) : floor(dblq);
+ ST0 = fpsrcop/*ST0*/ - fptemp * dblq;
+
+ /* convert dblq to q by truncating towards zero */
+ if (dblq < 0.0)
+ q = (signed long long int)(-dblq);
+ else
+ q = (signed long long int)dblq;
+
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
- /* (C0,C1,C3) <-- (q2,q1,q0) */
- env->fpus |= (q&0x4) << 6; /* (C0) <-- q2 */
- env->fpus |= (q&0x2) << 8; /* (C1) <-- q1 */
- env->fpus |= (q&0x1) << 14; /* (C3) <-- q0 */
+ /* (C0,C3,C1) <-- (q2,q1,q0) */
+ env->fpus |= (q & 0x4) << (8 - 2); /* (C0) <-- q2 */
+ env->fpus |= (q & 0x2) << (14 - 1); /* (C3) <-- q1 */
+ env->fpus |= (q & 0x1) << (9 - 0); /* (C1) <-- q0 */
} else {
+ int N = 32 + (expdif % 32); /* as per AMD docs */
env->fpus |= 0x400; /* C2 <-- 1 */
- fptemp = pow(2.0, expdif-50);
+ fptemp = pow(2.0, (double)(expdif - N));
fpsrcop = (ST0 / ST1) / fptemp;
/* fpsrcop = integer obtained by chopping */
- fpsrcop = (fpsrcop < 0.0)?
- -(floor(fabs(fpsrcop))): floor(fpsrcop);
+ fpsrcop = (fpsrcop < 0.0) ?
+ -(floor(fabs(fpsrcop))) : floor(fpsrcop);
ST0 -= (ST1 * fpsrcop * fptemp);
}
}
fptemp = log(fptemp+1.0) / log(2.0); /* log2(ST+1.0) */
ST1 *= fptemp;
fpop();
- } else {
+ } else {
env->fpus &= (~0x4700);
env->fpus |= 0x400;
}
CPU86_LDouble fptemp;
fptemp = ST0;
- if (fptemp<0.0) {
+ if (fptemp<0.0) {
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
env->fpus |= 0x400;
}
void helper_fscale(void)
{
- CPU86_LDouble fpsrcop, fptemp;
-
- fpsrcop = 2.0;
- fptemp = pow(fpsrcop,ST1);
- ST0 *= fptemp;
+ ST0 = ldexp (ST0, (int)(ST1));
}
void helper_fsin(void)
if (SIGND(temp))
env->fpus |= 0x200; /* C1 <-- 1 */
+ /* XXX: test fptags too */
expdif = EXPD(temp);
if (expdif == MAXEXPD) {
+#ifdef USE_X86LDOUBLE
+ if (MANTD(temp) == 0x8000000000000000ULL)
+#else
if (MANTD(temp) == 0)
+#endif
env->fpus |= 0x500 /*Infinity*/;
else
env->fpus |= 0x100 /*NaN*/;
helper_fstt(tmp, addr);
addr += 16;
}
-
+
if (env->cr[4] & CR4_OSFXSR_MASK) {
/* XXX: finish it */
stl(ptr + 0x18, env->mxcsr); /* mxcsr */
add128(plow, phigh, 1, 0);
}
-static void mul64(uint64_t *plow, uint64_t *phigh, uint64_t a, uint64_t b)
-{
- uint32_t a0, a1, b0, b1;
- uint64_t v;
-
- a0 = a;
- a1 = a >> 32;
-
- b0 = b;
- b1 = b >> 32;
-
- v = (uint64_t)a0 * (uint64_t)b0;
- *plow = v;
- *phigh = 0;
-
- v = (uint64_t)a0 * (uint64_t)b1;
- add128(plow, phigh, v << 32, v >> 32);
-
- v = (uint64_t)a1 * (uint64_t)b0;
- add128(plow, phigh, v << 32, v >> 32);
-
- v = (uint64_t)a1 * (uint64_t)b1;
- *phigh += v;
-#ifdef DEBUG_MULDIV
- printf("mul: 0x%016llx * 0x%016llx = 0x%016llx%016llx\n",
- a, b, *phigh, *plow);
-#endif
-}
-
-static void imul64(uint64_t *plow, uint64_t *phigh, int64_t a, int64_t b)
-{
- int sa, sb;
- sa = (a < 0);
- if (sa)
- a = -a;
- sb = (b < 0);
- if (sb)
- b = -b;
- mul64(plow, phigh, a, b);
- if (sa ^ sb) {
- neg128(plow, phigh);
- }
-}
-
-/* XXX: overflow support */
-static void div64(uint64_t *plow, uint64_t *phigh, uint64_t b)
+/* return TRUE if overflow */
+static int div64(uint64_t *plow, uint64_t *phigh, uint64_t b)
{
uint64_t q, r, a1, a0;
- int i, qb;
+ int i, qb, ab;
a0 = *plow;
a1 = *phigh;
*plow = q;
*phigh = r;
} else {
+ if (a1 >= b)
+ return 1;
/* XXX: use a better algorithm */
for(i = 0; i < 64; i++) {
+ ab = a1 >> 63;
a1 = (a1 << 1) | (a0 >> 63);
- if (a1 >= b) {
+ if (ab || a1 >= b) {
a1 -= b;
qb = 1;
} else {
a0 = (a0 << 1) | qb;
}
#if defined(DEBUG_MULDIV)
- printf("div: 0x%016llx%016llx / 0x%016llx: q=0x%016llx r=0x%016llx\n",
+ printf("div: 0x%016" PRIx64 "%016" PRIx64 " / 0x%016" PRIx64 ": q=0x%016" PRIx64 " r=0x%016" PRIx64 "\n",
*phigh, *plow, b, a0, a1);
#endif
*plow = a0;
*phigh = a1;
}
+ return 0;
}
-static void idiv64(uint64_t *plow, uint64_t *phigh, int64_t b)
+/* return TRUE if overflow */
+static int idiv64(uint64_t *plow, uint64_t *phigh, int64_t b)
{
int sa, sb;
sa = ((int64_t)*phigh < 0);
sb = (b < 0);
if (sb)
b = -b;
- div64(plow, phigh, b);
- if (sa ^ sb)
+ if (div64(plow, phigh, b) != 0)
+ return 1;
+ if (sa ^ sb) {
+ if (*plow > (1ULL << 63))
+ return 1;
*plow = - *plow;
+ } else {
+ if (*plow >= (1ULL << 63))
+ return 1;
+ }
if (sa)
*phigh = - *phigh;
+ return 0;
}
void helper_mulq_EAX_T0(void)
{
uint64_t r0, r1;
- mul64(&r0, &r1, EAX, T0);
+ mulu64(&r1, &r0, EAX, T0);
EAX = r0;
EDX = r1;
CC_DST = r0;
{
uint64_t r0, r1;
- imul64(&r0, &r1, EAX, T0);
+ muls64(&r1, &r0, EAX, T0);
EAX = r0;
EDX = r1;
CC_DST = r0;
{
uint64_t r0, r1;
- imul64(&r0, &r1, T0, T1);
+ muls64(&r1, &r0, T0, T1);
T0 = r0;
CC_DST = r0;
CC_SRC = ((int64_t)r1 != ((int64_t)r0 >> 63));
}
r0 = EAX;
r1 = EDX;
- div64(&r0, &r1, T0);
+ if (div64(&r0, &r1, T0))
+ raise_exception(EXCP00_DIVZ);
EAX = r0;
EDX = r1;
}
}
r0 = EAX;
r1 = EDX;
- idiv64(&r0, &r1, T0);
+ if (idiv64(&r0, &r1, T0))
+ raise_exception(EXCP00_DIVZ);
EAX = r0;
EDX = r1;
}
+void helper_bswapq_T0(void)
+{
+ T0 = bswap64(T0);
+}
#endif
+void helper_hlt(void)
+{
+ env->hflags &= ~HF_INHIBIT_IRQ_MASK; /* needed if sti is just before */
+ env->hflags |= HF_HALTED_MASK;
+ env->exception_index = EXCP_HLT;
+ cpu_loop_exit();
+}
+
+void helper_monitor(void)
+{
+ if ((uint32_t)ECX != 0)
+ raise_exception(EXCP0D_GPF);
+ /* XXX: store address ? */
+}
+
+void helper_mwait(void)
+{
+ if ((uint32_t)ECX != 0)
+ raise_exception(EXCP0D_GPF);
+ /* XXX: not complete but not completely erroneous */
+ if (env->cpu_index != 0 || env->next_cpu != NULL) {
+ /* more than one CPU: do not sleep because another CPU may
+ wake this one */
+ } else {
+ helper_hlt();
+ }
+}
+
float approx_rsqrt(float a)
{
return 1.0 / sqrt(a);
#endif
}
-#if !defined(CONFIG_USER_ONLY)
+#if !defined(CONFIG_USER_ONLY)
#define MMUSUFFIX _mmu
#define GETPC() (__builtin_return_address(0))
}
}
if (retaddr)
- raise_exception_err(EXCP0E_PAGE, env->error_code);
+ raise_exception_err(env->exception_index, env->error_code);
else
- raise_exception_err_norestore(EXCP0E_PAGE, env->error_code);
+ raise_exception_err_norestore(env->exception_index, env->error_code);
}
env = saved_env;
}
projects / mirror_qemu.git / blobdiff