diff options
Diffstat (limited to 'src/arch/i386/prefix/libprefix.S')
| -rw-r--r-- | src/arch/i386/prefix/libprefix.S | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/src/arch/i386/prefix/libprefix.S b/src/arch/i386/prefix/libprefix.S index 3aee415f5..13da652ed 100644 --- a/src/arch/i386/prefix/libprefix.S +++ b/src/arch/i386/prefix/libprefix.S @@ -95,6 +95,29 @@ print_character: .size print_character, . - print_character /***************************************************************************** + * Utility function: print space + * + * Parameters: + * %ds:di : output buffer (or %di=0 to print to console) + * Returns: + * %ds:di : next character in output buffer (if applicable) + ***************************************************************************** + */ + .section ".prefix.lib", "awx", @progbits + .code16 + .globl print_space +print_space: + /* Preserve registers */ + pushw %ax + /* Print space */ + movb $( ' ' ), %al + call print_character + /* Restore registers and return */ + popw %ax + ret + .size print_space, . - print_space + +/***************************************************************************** * Utility function: print a NUL-terminated string * * Parameters: @@ -231,12 +254,10 @@ print_kill_line: movb $( '\r' ), %al call print_character /* Print 79 spaces */ - movb $( ' ' ), %al movw $79, %cx -1: call print_character +1: call print_space loop 1b /* Print CR */ - movb $( '\r' ), %al call print_character /* Restore registers and return */ popw %cx |