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document 32/16bit var

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This commit is contained in:
Dan Luu 2013-03-16 17:15:29 -04:00
parent d885355362
commit c1e000252f
1 changed files with 33 additions and 33 deletions
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66
cpux86-ta.js
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@ -3694,18 +3694,18 @@ CPU_X86.prototype.exec_internal = function(N_cycles, interrupt) {
/* used only in CALLF, and InterruptF in paged mode */ /* used only in CALLF, and InterruptF in paged mode */
function load_from_TR(he) { function load_from_TR(he) {
var tr_type, Rb, je, ke, le; var tr_type, Rb, is_32_bit, ke, le;
if (!(cpu.tr.flags & (1 << 15))) if (!(cpu.tr.flags & (1 << 15)))
cpu_abort("invalid tss"); //task state segment cpu_abort("invalid tss"); //task state segment
tr_type = (cpu.tr.flags >> 8) & 0xf; tr_type = (cpu.tr.flags >> 8) & 0xf;
if ((tr_type & 7) != 1) if ((tr_type & 7) != 1)
cpu_abort("invalid tss type"); cpu_abort("invalid tss type");
je = tr_type >> 3; is_32_bit = tr_type >> 3;
Rb = (he * 4 + 2) << je; Rb = (he * 4 + 2) << is_32_bit;
if (Rb + (4 << je) - 1 > cpu.tr.limit) if (Rb + (4 << is_32_bit) - 1 > cpu.tr.limit)
abort_with_error_code(10, cpu.tr.selector & 0xfffc); abort_with_error_code(10, cpu.tr.selector & 0xfffc);
mem8_loc = (cpu.tr.base + Rb) & -1; mem8_loc = (cpu.tr.base + Rb) & -1;
if (je == 0) { if (is_32_bit == 0) {
le = ld16_mem8_kernel_read(); le = ld16_mem8_kernel_read();
mem8_loc += 2; mem8_loc += 2;
} else { } else {
@ -3717,7 +3717,7 @@ CPU_X86.prototype.exec_internal = function(N_cycles, interrupt) {
} }
function do_interrupt_paged_mode(intno, ne, error_code, oe, pe) { function do_interrupt_paged_mode(intno, ne, error_code, oe, pe) {
var descriptor_table, qe, descriptor_type, he, selector, re, cpl_var; var descriptor_table, qe, descriptor_type, he, selector, re, cpl_var;
var te, ue, je; var te, ue, is_32_bit;
var e, descriptor_low4bytes, descriptor_high4bytes, ve, ke, le, we, xe; var e, descriptor_low4bytes, descriptor_high4bytes, ve, ke, le, we, xe;
var ye, SS_mask; var ye, SS_mask;
te = 0; te = 0;
@ -3818,8 +3818,8 @@ CPU_X86.prototype.exec_internal = function(N_cycles, interrupt) {
qe = 0; qe = 0;
le = 0; le = 0;
} }
je = descriptor_type >> 3; is_32_bit = descriptor_type >> 3;
if (je == 1) { if (is_32_bit == 1) {
if (ue) { if (ue) {
if (cpu.eflags & 0x00020000) { if (cpu.eflags & 0x00020000) {
{ {
@ -4202,10 +4202,10 @@ CPU_X86.prototype.exec_internal = function(N_cycles, interrupt) {
} }
} }
function op_CALLF_not_paged_mode(je, Ke, Le, oe) { function op_CALLF_not_paged_mode(is_32_bit, Ke, Le, oe) {
var le; var le;
le = regs[4]; le = regs[4];
if (je) { if (is_32_bit) {
{ {
le = (le - 4) >> 0; le = (le - 4) >> 0;
mem8_loc = ((le & SS_mask) + SS_base) >> 0; mem8_loc = ((le & SS_mask) + SS_base) >> 0;
@ -4234,7 +4234,7 @@ CPU_X86.prototype.exec_internal = function(N_cycles, interrupt) {
cpu.segs[1].base = (Ke << 4); cpu.segs[1].base = (Ke << 4);
init_segment_local_vars(); init_segment_local_vars();
} }
function op_CALLF_paged_mode(je, Ke, Le, oe) { function op_CALLF_paged_mode(is_32_bit, Ke, 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;
@ -4269,7 +4269,7 @@ CPU_X86.prototype.exec_internal = function(N_cycles, interrupt) {
Te = We; Te = We;
SS_mask = SS_mask_from_flags(cpu.segs[2].flags); SS_mask = SS_mask_from_flags(cpu.segs[2].flags);
qe = cpu.segs[2].base; qe = cpu.segs[2].base;
if (je) { if (is_32_bit) {
{ {
Te = (Te - 4) & -1; Te = (Te - 4) & -1;
mem8_loc = (qe + (Te & SS_mask)) & -1; mem8_loc = (qe + (Te & SS_mask)) & -1;
@ -4316,7 +4316,7 @@ CPU_X86.prototype.exec_internal = function(N_cycles, interrupt) {
abort_with_error_code(13, Ke & 0xfffc); abort_with_error_code(13, Ke & 0xfffc);
break; break;
} }
je = 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, Ke & 0xfffc);
if (!(descriptor_high4bytes & (1 << 15))) if (!(descriptor_high4bytes & (1 << 15)))
@ -4362,7 +4362,7 @@ CPU_X86.prototype.exec_internal = function(N_cycles, interrupt) {
Ve = cpu.segs[2].base; Ve = cpu.segs[2].base;
SS_mask = SS_mask_from_flags(xe); SS_mask = SS_mask_from_flags(xe);
qe = calculate_descriptor_base(we, xe); qe = calculate_descriptor_base(we, xe);
if (je) { if (is_32_bit) {
{ {
Te = (Te - 4) & -1; Te = (Te - 4) & -1;
mem8_loc = (qe + (Te & SS_mask)) & -1; mem8_loc = (qe + (Te & SS_mask)) & -1;
@ -4408,7 +4408,7 @@ CPU_X86.prototype.exec_internal = function(N_cycles, interrupt) {
qe = cpu.segs[2].base; qe = cpu.segs[2].base;
ue = 0; ue = 0;
} }
if (je) { if (is_32_bit) {
{ {
Te = (Te - 4) & -1; Te = (Te - 4) & -1;
mem8_loc = (qe + (Te & SS_mask)) & -1; mem8_loc = (qe + (Te & SS_mask)) & -1;
@ -4442,19 +4442,19 @@ 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(je, Ke, Le, oe) { function op_CALLF(is_32_bit, Ke, Le, oe) {
if (!(cpu.cr0 & (1 << 0)) || (cpu.eflags & 0x00020000)) { if (!(cpu.cr0 & (1 << 0)) || (cpu.eflags & 0x00020000)) {
op_CALLF_not_paged_mode(je, Ke, Le, oe); op_CALLF_not_paged_mode(is_32_bit, Ke, Le, oe);
} else { } else {
op_CALLF_paged_mode(je, Ke, Le, oe); op_CALLF_paged_mode(is_32_bit, Ke, Le, oe);
} }
} }
function do_return_not_paged_mode(je, bf, cf) { function do_return_not_paged_mode(is_32_bit, bf, cf) {
var Te, Ke, Le, df, SS_mask, qe, ef; var Te, Ke, 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;
if (je == 1) { if (is_32_bit == 1) {
{ {
mem8_loc = (qe + (Te & SS_mask)) & -1; mem8_loc = (qe + (Te & SS_mask)) & -1;
Le = ld32_mem8_kernel_read(); Le = ld32_mem8_kernel_read();
@ -4497,13 +4497,13 @@ CPU_X86.prototype.exec_internal = function(N_cycles, interrupt) {
ef = 0x00000100 | 0x00040000 | 0x00200000 | 0x00000200 | 0x00010000 | 0x00004000; ef = 0x00000100 | 0x00040000 | 0x00200000 | 0x00000200 | 0x00010000 | 0x00004000;
else else
ef = 0x00000100 | 0x00040000 | 0x00200000 | 0x00000200 | 0x00003000 | 0x00010000 | 0x00004000; ef = 0x00000100 | 0x00040000 | 0x00200000 | 0x00000200 | 0x00003000 | 0x00010000 | 0x00004000;
if (je == 0) if (is_32_bit == 0)
ef &= 0xffff; ef &= 0xffff;
set_FLAGS(df, ef); set_FLAGS(df, ef);
} }
init_segment_local_vars(); init_segment_local_vars();
} }
function do_return_paged_mode(je, bf, cf) { function do_return_paged_mode(is_32_bit, bf, cf) {
var Ke, df, gf; var Ke, 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;
@ -4513,7 +4513,7 @@ CPU_X86.prototype.exec_internal = function(N_cycles, interrupt) {
Te = regs[4]; Te = regs[4];
qe = cpu.segs[2].base; qe = cpu.segs[2].base;
df = 0; df = 0;
if (je == 1) { if (is_32_bit == 1) {
{ {
mem8_loc = (qe + (Te & SS_mask)) & -1; mem8_loc = (qe + (Te & SS_mask)) & -1;
Le = ld32_mem8_kernel_read(); Le = ld32_mem8_kernel_read();
@ -4619,7 +4619,7 @@ CPU_X86.prototype.exec_internal = function(N_cycles, interrupt) {
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, Ke, calculate_descriptor_base(descriptor_low4bytes, descriptor_high4bytes), calculate_descriptor_limit(descriptor_low4bytes, descriptor_high4bytes), descriptor_high4bytes);
} else { } else {
if (je == 1) { if (is_32_bit == 1) {
{ {
mem8_loc = (qe + (Te & SS_mask)) & -1; mem8_loc = (qe + (Te & SS_mask)) & -1;
wd = ld32_mem8_kernel_read(); wd = ld32_mem8_kernel_read();
@ -4681,12 +4681,12 @@ CPU_X86.prototype.exec_internal = function(N_cycles, interrupt) {
iopl = (cpu.eflags >> 12) & 3; iopl = (cpu.eflags >> 12) & 3;
if (cpl_var <= iopl) if (cpl_var <= iopl)
ef |= 0x00000200; ef |= 0x00000200;
if (je == 0) if (is_32_bit == 0)
ef &= 0xffff; ef &= 0xffff;
set_FLAGS(df, ef); set_FLAGS(df, ef);
} }
} }
function op_IRET(je) { function op_IRET(is_32_bit) {
var iopl; var iopl;
if (!(cpu.cr0 & (1 << 0)) || (cpu.eflags & 0x00020000)) { if (!(cpu.cr0 & (1 << 0)) || (cpu.eflags & 0x00020000)) {
if (cpu.eflags & 0x00020000) { if (cpu.eflags & 0x00020000) {
@ -4694,20 +4694,20 @@ CPU_X86.prototype.exec_internal = function(N_cycles, interrupt) {
if (iopl != 3) if (iopl != 3)
abort(13); abort(13);
} }
do_return_not_paged_mode(je, 1, 0); do_return_not_paged_mode(is_32_bit, 1, 0);
} else { } else {
if (cpu.eflags & 0x00004000) { if (cpu.eflags & 0x00004000) {
throw "unsupported task gate"; throw "unsupported task gate";
} else { } else {
do_return_paged_mode(je, 1, 0); do_return_paged_mode(is_32_bit, 1, 0);
} }
} }
} }
function op_RETF(je, cf) { function op_RETF(is_32_bit, cf) {
if (!(cpu.cr0 & (1 << 0)) || (cpu.eflags & 0x00020000)) { if (!(cpu.cr0 & (1 << 0)) || (cpu.eflags & 0x00020000)) {
do_return_not_paged_mode(je, 0, cf); do_return_not_paged_mode(is_32_bit, 0, cf);
} else { } else {
do_return_paged_mode(je, 0, cf); do_return_paged_mode(is_32_bit, 0, cf);
} }
} }
@ -4757,7 +4757,7 @@ CPU_X86.prototype.exec_internal = function(N_cycles, interrupt) {
return descriptor_high4bytes & 0x00f0ff00; return descriptor_high4bytes & 0x00f0ff00;
} }
} }
function op_LAR_LSL(je, is_lsl) { function op_LAR_LSL(is_32_bit, is_lsl) {
var x, mem8, reg_idx1, selector; var x, mem8, reg_idx1, selector;
if (!(cpu.cr0 & (1 << 0)) || (cpu.eflags & 0x00020000)) if (!(cpu.cr0 & (1 << 0)) || (cpu.eflags & 0x00020000))
abort(6); abort(6);
@ -4775,7 +4775,7 @@ CPU_X86.prototype.exec_internal = function(N_cycles, interrupt) {
_src &= ~0x0040; _src &= ~0x0040;
} else { } else {
_src |= 0x0040; _src |= 0x0040;
if (je) if (is_32_bit)
regs[reg_idx1] = x; regs[reg_idx1] = x;
else else
set_lower_word_in_register(reg_idx1, x); set_lower_word_in_register(reg_idx1, x);