diff options
| author | Richard M. Stallman <rms@gnu.org> | 1994-07-09 05:13:38 +0000 |
|---|---|---|
| committer | Richard M. Stallman <rms@gnu.org> | 1994-07-09 05:13:38 +0000 |
| commit | 11395e81110338eb7f37a043d5b0bf1cbfac9cf2 (patch) | |
| tree | 1f4096adacc2e6e1ec3d1d86e2ea45c0134f1d49 /src/msdos.c | |
| parent | 57c6b7248ee19a6d2650c9d74a415dc53dd67e8e (diff) | |
| download | emacs-11395e81110338eb7f37a043d5b0bf1cbfac9cf2.tar.gz | |
(install_ctrl_break_check): Doc fix.
(do_visible_bell): Clean-up using Gnu assembly extension.
Diffstat (limited to 'src/msdos.c')
| -rw-r--r-- | src/msdos.c | 56 |
1 files changed, 21 insertions, 35 deletions
diff --git a/src/msdos.c b/src/msdos.c index 0b738c4a050..3ef68d0ccc9 100644 --- a/src/msdos.c +++ b/src/msdos.c @@ -779,52 +779,38 @@ init_environment (argc, argv, skip_args) /* Flash the screen as a substitute for BEEPs. */ -static unsigned char _xorattr; - static void do_visible_bell (xorattr) unsigned char xorattr; { - _xorattr = xorattr; asm volatile - (" pushl %eax - pushl %ebx - pushl %ecx - pushl %edx - movl $1,%edx + (" movb $1,%%dl visible_bell_0: - call _ScreenRows - pushl %eax - call _ScreenCols - pushl %eax - movl _ScreenPrimary,%eax + movl _ScreenPrimary,%%eax call dosmemsetup - movl %eax,%ebx - popl %ecx - popl %eax - imull %eax,%ecx - movb (__xorattr),%al - incl %ebx + movl %%eax,%%ebx + movl %1,%%ecx + movb %0,%%al + incl %%ebx visible_bell_1: - xorb %al,%gs:(%ebx) - addl $2,%ebx - decl %ecx + xorb %%al,%%gs:(%%ebx) + addl $2,%%ebx + decl %%ecx jne visible_bell_1 - decl %edx + decb %%dl jne visible_bell_3 visible_bell_2: - movzwl %ax,%eax - movzwl %ax,%eax - movzwl %ax,%eax - movzwl %ax,%eax - decw %cx + movzwl %%ax,%%eax + movzwl %%ax,%%eax + movzwl %%ax,%%eax + movzwl %%ax,%%eax + decw %%cx jne visible_bell_2 jmp visible_bell_0 -visible_bell_3: - popl %edx - popl %ecx - popl %ebx - popl %eax"); +visible_bell_3:" + : /* no output */ + : "m" (xorattr), "g" (ScreenCols () * ScreenRows ()) + : "%eax", "%ebx", /* "%gs",*/ "%ecx", "%edx"); } /* At screen position (X,Y), output C characters from string S with @@ -1044,7 +1030,7 @@ install_ctrl_break_check () if (!ctrlbreakinstalled) { /* Don't press Ctrl-Break if you don't have either DPMI or Emacs - was compiler with Djgpp 1.11 maintenance level 2 or later! */ + was compiler with Djgpp 1.11 maintenance level 5 or later! */ ctrlbreakinstalled = 1; ctrl_break_vector.pm_offset = (int) ctrl_break_func; _go32_dpmi_allocate_real_mode_callback_iret (&ctrl_break_vector, @@ -1122,7 +1108,7 @@ mouse_pressed (b, xp, yp) regs.x.bx = mouse_button_translate[b]; int86 (0x33, ®s, ®s); if (regs.x.bx) - *xp = regs.x.cx / 8, *yp = regs.x.dx /8; + *xp = regs.x.cx / 8, *yp = regs.x.dx / 8; return (regs.x.bx != 0); } |