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document selector var

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This commit is contained in:
Dan Luu 2013-03-16 18:18:05 -04:00
parent 3c8cf4e15b
commit 0f204c47b4
1 changed files with 63 additions and 63 deletions
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126
cpux86-ta.js
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@ -4139,52 +4139,52 @@ CPU_X86.prototype.exec_internal = function(N_cycles, interrupt) {
set_protected_mode_segment_register(register, selector); set_protected_mode_segment_register(register, selector);
} }
} }
function do_JMPF_virtual_mode(Ke, Le) { function do_JMPF_virtual_mode(selector, Le) {
eip = Le, physmem8_ptr = initial_mem_ptr = 0; eip = Le, physmem8_ptr = initial_mem_ptr = 0;
cpu.segs[1].selector = Ke; cpu.segs[1].selector = selector;
cpu.segs[1].base = (Ke << 4); cpu.segs[1].base = (selector << 4);
init_segment_local_vars(); init_segment_local_vars();
} }
function do_JMPF(Ke, Le) { function do_JMPF(selector, Le) {
var Ne, ie, descriptor_low4bytes, descriptor_high4bytes, cpl_var, dpl, rpl, limit, e; var Ne, ie, descriptor_low4bytes, descriptor_high4bytes, cpl_var, dpl, rpl, limit, e;
if ((Ke & 0xfffc) == 0) if ((selector & 0xfffc) == 0)
abort_with_error_code(13, 0); abort_with_error_code(13, 0);
e = load_from_descriptor_table(Ke); e = load_from_descriptor_table(selector);
if (!e) if (!e)
abort_with_error_code(13, Ke & 0xfffc); abort_with_error_code(13, selector & 0xfffc);
descriptor_low4bytes = e[0]; descriptor_low4bytes = e[0];
descriptor_high4bytes = e[1]; descriptor_high4bytes = e[1];
cpl_var = cpu.cpl; cpl_var = cpu.cpl;
if (descriptor_high4bytes & (1 << 12)) { if (descriptor_high4bytes & (1 << 12)) {
if (!(descriptor_high4bytes & (1 << 11))) if (!(descriptor_high4bytes & (1 << 11)))
abort_with_error_code(13, Ke & 0xfffc); abort_with_error_code(13, selector & 0xfffc);
dpl = (descriptor_high4bytes >> 13) & 3; dpl = (descriptor_high4bytes >> 13) & 3;
if (descriptor_high4bytes & (1 << 10)) { if (descriptor_high4bytes & (1 << 10)) {
if (dpl > cpl_var) if (dpl > cpl_var)
abort_with_error_code(13, Ke & 0xfffc); abort_with_error_code(13, selector & 0xfffc);
} else { } else {
rpl = Ke & 3; rpl = selector & 3;
if (rpl > cpl_var) if (rpl > cpl_var)
abort_with_error_code(13, Ke & 0xfffc); abort_with_error_code(13, selector & 0xfffc);
if (dpl != cpl_var) if (dpl != cpl_var)
abort_with_error_code(13, Ke & 0xfffc); abort_with_error_code(13, selector & 0xfffc);
} }
if (!(descriptor_high4bytes & (1 << 15))) if (!(descriptor_high4bytes & (1 << 15)))
abort_with_error_code(11, Ke & 0xfffc); abort_with_error_code(11, selector & 0xfffc);
limit = calculate_descriptor_limit(descriptor_low4bytes, descriptor_high4bytes); limit = calculate_descriptor_limit(descriptor_low4bytes, descriptor_high4bytes);
if ((Le >>> 0) > (limit >>> 0)) if ((Le >>> 0) > (limit >>> 0))
abort_with_error_code(13, Ke & 0xfffc); abort_with_error_code(13, selector & 0xfffc);
set_segment_vars(1, (Ke & 0xfffc) | cpl_var, calculate_descriptor_base(descriptor_low4bytes, descriptor_high4bytes), limit, descriptor_high4bytes); set_segment_vars(1, (selector & 0xfffc) | cpl_var, calculate_descriptor_base(descriptor_low4bytes, descriptor_high4bytes), limit, descriptor_high4bytes);
eip = Le, physmem8_ptr = initial_mem_ptr = 0; eip = Le, physmem8_ptr = initial_mem_ptr = 0;
} else { } else {
cpu_abort("unsupported jump to call or task gate"); cpu_abort("unsupported jump to call or task gate");
} }
} }
function op_JMPF(Ke, Le) { function op_JMPF(selector, Le) {
if (!(cpu.cr0 & (1 << 0)) || (cpu.eflags & 0x00020000)) { if (!(cpu.cr0 & (1 << 0)) || (cpu.eflags & 0x00020000)) {
do_JMPF_virtual_mode(Ke, Le); do_JMPF_virtual_mode(selector, Le);
} else { } else {
do_JMPF(Ke, Le); do_JMPF(selector, Le);
} }
} }
@ -4202,7 +4202,7 @@ CPU_X86.prototype.exec_internal = function(N_cycles, interrupt) {
} }
} }
function op_CALLF_not_paged_mode(is_32_bit, Ke, Le, oe) { function op_CALLF_not_paged_mode(is_32_bit, selector, Le, oe) {
var le; var le;
le = regs[4]; le = regs[4];
if (is_32_bit) { if (is_32_bit) {
@ -4230,41 +4230,41 @@ CPU_X86.prototype.exec_internal = function(N_cycles, interrupt) {
} }
regs[4] = (regs[4] & ~SS_mask) | ((le) & SS_mask); regs[4] = (regs[4] & ~SS_mask) | ((le) & SS_mask);
eip = Le, physmem8_ptr = initial_mem_ptr = 0; eip = Le, physmem8_ptr = initial_mem_ptr = 0;
cpu.segs[1].selector = Ke; cpu.segs[1].selector = selector;
cpu.segs[1].base = (Ke << 4); cpu.segs[1].base = (selector << 4);
init_segment_local_vars(); init_segment_local_vars();
} }
function op_CALLF_paged_mode(is_32_bit, Ke, Le, oe) { function op_CALLF_paged_mode(is_32_bit, selector, Le, oe) {
var ue, i, e; var ue, i, e;
var descriptor_low4bytes, descriptor_high4bytes, cpl_var, dpl, rpl, selector, ve, Se; var descriptor_low4bytes, descriptor_high4bytes, cpl_var, dpl, rpl, selector, ve, Se;
var ke, we, xe, Te, descriptor_type, re, SS_mask; var ke, we, xe, Te, descriptor_type, re, SS_mask;
var x, limit, Ue; var x, limit, Ue;
var qe, Ve, We; var qe, Ve, We;
if ((Ke & 0xfffc) == 0) if ((selector & 0xfffc) == 0)
abort_with_error_code(13, 0); abort_with_error_code(13, 0);
e = load_from_descriptor_table(Ke); e = load_from_descriptor_table(selector);
if (!e) if (!e)
abort_with_error_code(13, Ke & 0xfffc); abort_with_error_code(13, selector & 0xfffc);
descriptor_low4bytes = e[0]; descriptor_low4bytes = e[0];
descriptor_high4bytes = e[1]; descriptor_high4bytes = e[1];
cpl_var = cpu.cpl; cpl_var = cpu.cpl;
We = regs[4]; We = regs[4];
if (descriptor_high4bytes & (1 << 12)) { if (descriptor_high4bytes & (1 << 12)) {
if (!(descriptor_high4bytes & (1 << 11))) if (!(descriptor_high4bytes & (1 << 11)))
abort_with_error_code(13, Ke & 0xfffc); abort_with_error_code(13, selector & 0xfffc);
dpl = (descriptor_high4bytes >> 13) & 3; dpl = (descriptor_high4bytes >> 13) & 3;
if (descriptor_high4bytes & (1 << 10)) { if (descriptor_high4bytes & (1 << 10)) {
if (dpl > cpl_var) if (dpl > cpl_var)
abort_with_error_code(13, Ke & 0xfffc); abort_with_error_code(13, selector & 0xfffc);
} else { } else {
rpl = Ke & 3; rpl = selector & 3;
if (rpl > cpl_var) if (rpl > cpl_var)
abort_with_error_code(13, Ke & 0xfffc); abort_with_error_code(13, selector & 0xfffc);
if (dpl != cpl_var) if (dpl != cpl_var)
abort_with_error_code(13, Ke & 0xfffc); abort_with_error_code(13, selector & 0xfffc);
} }
if (!(descriptor_high4bytes & (1 << 15))) if (!(descriptor_high4bytes & (1 << 15)))
abort_with_error_code(11, Ke & 0xfffc); abort_with_error_code(11, selector & 0xfffc);
{ {
Te = We; Te = We;
SS_mask = SS_mask_from_flags(cpu.segs[2].flags); SS_mask = SS_mask_from_flags(cpu.segs[2].flags);
@ -4294,15 +4294,15 @@ CPU_X86.prototype.exec_internal = function(N_cycles, interrupt) {
} }
limit = calculate_descriptor_limit(descriptor_low4bytes, descriptor_high4bytes); limit = calculate_descriptor_limit(descriptor_low4bytes, descriptor_high4bytes);
if (Le > limit) if (Le > limit)
abort_with_error_code(13, Ke & 0xfffc); abort_with_error_code(13, selector & 0xfffc);
regs[4] = (regs[4] & ~SS_mask) | ((Te) & SS_mask); regs[4] = (regs[4] & ~SS_mask) | ((Te) & SS_mask);
set_segment_vars(1, (Ke & 0xfffc) | cpl_var, calculate_descriptor_base(descriptor_low4bytes, descriptor_high4bytes), limit, descriptor_high4bytes); set_segment_vars(1, (selector & 0xfffc) | cpl_var, calculate_descriptor_base(descriptor_low4bytes, descriptor_high4bytes), limit, descriptor_high4bytes);
eip = Le, physmem8_ptr = initial_mem_ptr = 0; eip = Le, physmem8_ptr = initial_mem_ptr = 0;
} }
} else { } else {
descriptor_type = (descriptor_high4bytes >> 8) & 0x1f; descriptor_type = (descriptor_high4bytes >> 8) & 0x1f;
dpl = (descriptor_high4bytes >> 13) & 3; dpl = (descriptor_high4bytes >> 13) & 3;
rpl = Ke & 3; rpl = selector & 3;
switch (descriptor_type) { switch (descriptor_type) {
case 1: case 1:
case 9: case 9:
@ -4313,14 +4313,14 @@ CPU_X86.prototype.exec_internal = function(N_cycles, interrupt) {
case 12: case 12:
break; break;
default: default:
abort_with_error_code(13, Ke & 0xfffc); abort_with_error_code(13, selector & 0xfffc);
break; break;
} }
is_32_bit = descriptor_type >> 3; is_32_bit = descriptor_type >> 3;
if (dpl < cpl_var || dpl < rpl) if (dpl < cpl_var || dpl < rpl)
abort_with_error_code(13, Ke & 0xfffc); abort_with_error_code(13, selector & 0xfffc);
if (!(descriptor_high4bytes & (1 << 15))) if (!(descriptor_high4bytes & (1 << 15)))
abort_with_error_code(11, Ke & 0xfffc); abort_with_error_code(11, selector & 0xfffc);
selector = descriptor_low4bytes >> 16; selector = descriptor_low4bytes >> 16;
ve = (descriptor_high4bytes & 0xffff0000) | (descriptor_low4bytes & 0x0000ffff); ve = (descriptor_high4bytes & 0xffff0000) | (descriptor_low4bytes & 0x0000ffff);
Se = descriptor_high4bytes & 0x1f; Se = descriptor_high4bytes & 0x1f;
@ -4442,15 +4442,15 @@ CPU_X86.prototype.exec_internal = function(N_cycles, interrupt) {
eip = ve, physmem8_ptr = initial_mem_ptr = 0; eip = ve, physmem8_ptr = initial_mem_ptr = 0;
} }
} }
function op_CALLF(is_32_bit, Ke, Le, oe) { function op_CALLF(is_32_bit, selector, Le, oe) {
if (!(cpu.cr0 & (1 << 0)) || (cpu.eflags & 0x00020000)) { if (!(cpu.cr0 & (1 << 0)) || (cpu.eflags & 0x00020000)) {
op_CALLF_not_paged_mode(is_32_bit, Ke, Le, oe); op_CALLF_not_paged_mode(is_32_bit, selector, Le, oe);
} else { } else {
op_CALLF_paged_mode(is_32_bit, Ke, Le, oe); op_CALLF_paged_mode(is_32_bit, selector, Le, oe);
} }
} }
function do_return_not_paged_mode(is_32_bit, bf, cf) { function do_return_not_paged_mode(is_32_bit, bf, cf) {
var Te, Ke, Le, df, SS_mask, qe, ef; var Te, selector, Le, df, SS_mask, qe, ef;
SS_mask = 0xffff; SS_mask = 0xffff;
Te = regs[4]; Te = regs[4];
qe = cpu.segs[2].base; qe = cpu.segs[2].base;
@ -4462,10 +4462,10 @@ CPU_X86.prototype.exec_internal = function(N_cycles, interrupt) {
} }
{ {
mem8_loc = (qe + (Te & SS_mask)) & -1; mem8_loc = (qe + (Te & SS_mask)) & -1;
Ke = ld32_mem8_kernel_read(); selector = ld32_mem8_kernel_read();
Te = (Te + 4) & -1; Te = (Te + 4) & -1;
} }
Ke &= 0xffff; selector &= 0xffff;
if (bf) { if (bf) {
mem8_loc = (qe + (Te & SS_mask)) & -1; mem8_loc = (qe + (Te & SS_mask)) & -1;
df = ld32_mem8_kernel_read(); df = ld32_mem8_kernel_read();
@ -4479,7 +4479,7 @@ CPU_X86.prototype.exec_internal = function(N_cycles, interrupt) {
} }
{ {
mem8_loc = (qe + (Te & SS_mask)) & -1; mem8_loc = (qe + (Te & SS_mask)) & -1;
Ke = ld16_mem8_kernel_read(); selector = ld16_mem8_kernel_read();
Te = (Te + 2) & -1; Te = (Te + 2) & -1;
} }
if (bf) { if (bf) {
@ -4489,8 +4489,8 @@ CPU_X86.prototype.exec_internal = function(N_cycles, interrupt) {
} }
} }
regs[4] = (regs[4] & ~SS_mask) | ((Te + cf) & SS_mask); regs[4] = (regs[4] & ~SS_mask) | ((Te + cf) & SS_mask);
cpu.segs[1].selector = Ke; cpu.segs[1].selector = selector;
cpu.segs[1].base = (Ke << 4); cpu.segs[1].base = (selector << 4);
eip = Le, physmem8_ptr = initial_mem_ptr = 0; eip = Le, physmem8_ptr = initial_mem_ptr = 0;
if (bf) { if (bf) {
if (cpu.eflags & 0x00020000) if (cpu.eflags & 0x00020000)
@ -4504,7 +4504,7 @@ CPU_X86.prototype.exec_internal = function(N_cycles, interrupt) {
init_segment_local_vars(); init_segment_local_vars();
} }
function do_return_paged_mode(is_32_bit, bf, cf) { function do_return_paged_mode(is_32_bit, bf, cf) {
var Ke, df, gf; var selector, df, gf;
var hf, jf, kf, lf; var hf, jf, kf, lf;
var e, descriptor_low4bytes, descriptor_high4bytes, we, xe; var e, descriptor_low4bytes, descriptor_high4bytes, we, xe;
var cpl_var, dpl, rpl, ef, iopl; var cpl_var, dpl, rpl, ef, iopl;
@ -4521,10 +4521,10 @@ CPU_X86.prototype.exec_internal = function(N_cycles, interrupt) {
} }
{ {
mem8_loc = (qe + (Te & SS_mask)) & -1; mem8_loc = (qe + (Te & SS_mask)) & -1;
Ke = ld32_mem8_kernel_read(); selector = ld32_mem8_kernel_read();
Te = (Te + 4) & -1; Te = (Te + 4) & -1;
} }
Ke &= 0xffff; selector &= 0xffff;
if (bf) { if (bf) {
{ {
mem8_loc = (qe + (Te & SS_mask)) & -1; mem8_loc = (qe + (Te & SS_mask)) & -1;
@ -4563,7 +4563,7 @@ CPU_X86.prototype.exec_internal = function(N_cycles, interrupt) {
Te = (Te + 4) & -1; Te = (Te + 4) & -1;
} }
set_FLAGS(df, 0x00000100 | 0x00040000 | 0x00200000 | 0x00000200 | 0x00003000 | 0x00020000 | 0x00004000 | 0x00080000 | 0x00100000); set_FLAGS(df, 0x00000100 | 0x00040000 | 0x00200000 | 0x00000200 | 0x00003000 | 0x00020000 | 0x00004000 | 0x00080000 | 0x00100000);
init_segment_vars_with_selector(1, Ke & 0xffff); init_segment_vars_with_selector(1, selector & 0xffff);
change_permission_level(3); change_permission_level(3);
init_segment_vars_with_selector(2, gf & 0xffff); init_segment_vars_with_selector(2, gf & 0xffff);
init_segment_vars_with_selector(0, hf & 0xffff); init_segment_vars_with_selector(0, hf & 0xffff);
@ -4583,7 +4583,7 @@ CPU_X86.prototype.exec_internal = function(N_cycles, interrupt) {
} }
{ {
mem8_loc = (qe + (Te & SS_mask)) & -1; mem8_loc = (qe + (Te & SS_mask)) & -1;
Ke = ld16_mem8_kernel_read(); selector = ld16_mem8_kernel_read();
Te = (Te + 2) & -1; Te = (Te + 2) & -1;
} }
if (bf) { if (bf) {
@ -4592,32 +4592,32 @@ CPU_X86.prototype.exec_internal = function(N_cycles, interrupt) {
Te = (Te + 2) & -1; Te = (Te + 2) & -1;
} }
} }
if ((Ke & 0xfffc) == 0) if ((selector & 0xfffc) == 0)
abort_with_error_code(13, Ke & 0xfffc); abort_with_error_code(13, selector & 0xfffc);
e = load_from_descriptor_table(Ke); e = load_from_descriptor_table(selector);
if (!e) if (!e)
abort_with_error_code(13, Ke & 0xfffc); abort_with_error_code(13, selector & 0xfffc);
descriptor_low4bytes = e[0]; descriptor_low4bytes = e[0];
descriptor_high4bytes = e[1]; descriptor_high4bytes = e[1];
if (!(descriptor_high4bytes & (1 << 12)) || !(descriptor_high4bytes & (1 << 11))) if (!(descriptor_high4bytes & (1 << 12)) || !(descriptor_high4bytes & (1 << 11)))
abort_with_error_code(13, Ke & 0xfffc); abort_with_error_code(13, selector & 0xfffc);
cpl_var = cpu.cpl; cpl_var = cpu.cpl;
rpl = Ke & 3; rpl = selector & 3;
if (rpl < cpl_var) if (rpl < cpl_var)
abort_with_error_code(13, Ke & 0xfffc); abort_with_error_code(13, selector & 0xfffc);
dpl = (descriptor_high4bytes >> 13) & 3; dpl = (descriptor_high4bytes >> 13) & 3;
if (descriptor_high4bytes & (1 << 10)) { if (descriptor_high4bytes & (1 << 10)) {
if (dpl > rpl) if (dpl > rpl)
abort_with_error_code(13, Ke & 0xfffc); abort_with_error_code(13, selector & 0xfffc);
} else { } else {
if (dpl != rpl) if (dpl != rpl)
abort_with_error_code(13, Ke & 0xfffc); abort_with_error_code(13, selector & 0xfffc);
} }
if (!(descriptor_high4bytes & (1 << 15))) if (!(descriptor_high4bytes & (1 << 15)))
abort_with_error_code(11, Ke & 0xfffc); abort_with_error_code(11, selector & 0xfffc);
Te = (Te + cf) & -1; Te = (Te + cf) & -1;
if (rpl == cpl_var) { if (rpl == cpl_var) {
set_segment_vars(1, Ke, calculate_descriptor_base(descriptor_low4bytes, descriptor_high4bytes), calculate_descriptor_limit(descriptor_low4bytes, descriptor_high4bytes), descriptor_high4bytes); set_segment_vars(1, selector, calculate_descriptor_base(descriptor_low4bytes, descriptor_high4bytes), calculate_descriptor_limit(descriptor_low4bytes, descriptor_high4bytes), descriptor_high4bytes);
} else { } else {
if (is_32_bit == 1) { if (is_32_bit == 1) {
{ {
@ -4662,7 +4662,7 @@ CPU_X86.prototype.exec_internal = function(N_cycles, interrupt) {
abort_with_error_code(11, gf & 0xfffc); abort_with_error_code(11, gf & 0xfffc);
set_segment_vars(2, gf, calculate_descriptor_base(we, xe), calculate_descriptor_limit(we, xe), xe); set_segment_vars(2, gf, calculate_descriptor_base(we, xe), calculate_descriptor_limit(we, xe), xe);
} }
set_segment_vars(1, Ke, calculate_descriptor_base(descriptor_low4bytes, descriptor_high4bytes), calculate_descriptor_limit(descriptor_low4bytes, descriptor_high4bytes), descriptor_high4bytes); set_segment_vars(1, selector, calculate_descriptor_base(descriptor_low4bytes, descriptor_high4bytes), calculate_descriptor_limit(descriptor_low4bytes, descriptor_high4bytes), descriptor_high4bytes);
change_permission_level(rpl); change_permission_level(rpl);
Te = wd; Te = wd;
SS_mask = SS_mask_from_flags(xe); SS_mask = SS_mask_from_flags(xe);