Changeset ca8f84f in mainline for kernel/arch/ia32/src/asm.S
- Timestamp:
- 2010-07-02T19:59:57Z (14 years ago)
- Branches:
- lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export
- Children:
- fef504a
- Parents:
- bbfdf62
- File:
-
- 1 edited
Legend:
- Unmodified
- Added
- Removed
-
kernel/arch/ia32/src/asm.S
rbbfdf62 rca8f84f 428 428 * Since the EGA can only display Extended ASCII (usually 429 429 * ISO Latin 1) characters, some of the Unicode characters 430 * can be displayed in a wrong way. Only the newline character431 * isinterpreted, all other characters (even unprintable) are430 * can be displayed in a wrong way. Only newline and backspace 431 * are interpreted, all other characters (even unprintable) are 432 432 * printed verbatim. 433 433 * … … 481 481 482 482 cmp $0x0a, %al 483 jne early_putchar_ print483 jne early_putchar_backspace 484 484 485 485 /* Interpret newline */ … … 495 495 subw %dx, %bx 496 496 497 jmp early_putchar_newline 497 jmp early_putchar_skip 498 499 early_putchar_backspace: 500 501 cmp $0x08, %al 502 jne early_putchar_print 503 504 /* Interpret backspace */ 505 506 cmp $0x0000, %bx 507 je early_putchar_skip 508 509 dec %bx 510 jmp early_putchar_skip 498 511 499 512 early_putchar_print: … … 505 518 inc %bx 506 519 507 early_putchar_ newline:520 early_putchar_skip: 508 521 509 522 /* Sanity check for the cursor on the last line */
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