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Debugger changes for improved 32-bit support

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Jeff Parsons 2015-02-28 11:55:55 -08:00 • committed by jeffpar
commit f50612e7ca
21 changed files with 3581 additions and 2949 deletions
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13
modules/pcjs/lib/x86.js
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@ -84,11 +84,12 @@ var X86 = {
* Machine Status Word (MSW) bit definitions
*/
MSW: {
PE: 0x0001, // protected-mode enabled
MP: 0x0002, // monitor processor extension (ie, coprocessor)
EM: 0x0004, // emulate processor extension
TS: 0x0008, // task switch indicator
ON: 0xfff0 // on the 80286, these bits are always on (TODO: Verify)
PE: 0x0001, // protected-mode enabled
MP: 0x0002, // monitor processor extension (ie, coprocessor)
EM: 0x0004, // emulate processor extension
TS: 0x0008, // task switch indicator
ON: 0xfff0, // on the 80286, these bits are always on (TODO: Verify)
MASK: 0xffff // these are the only (MSW) bits that the 80286 can access (within CR0)
},
ET: 0x00000010, // coprocessor type (80287 or 80387); always 1 on post-80386 CPUs
PG: 0x80000000|0 // 0: paging disabled
@ -147,7 +148,7 @@ var X86 = {
SHIFT: 13
},
PRESENT: 0x8000,
INVALID: 0 // use X86.DESC.ACC.INVALID for invalid ACC values
INVALID: 0 // use X86.DESC.ACC.INVALID for invalid ACC values
},
EXT: { // descriptor extension word (reserved on the 80286; "must be zero")
OFFSET: 0x6,