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cc65/libsrc/em/em_unload.s
cuz ca71d94e00 Renamed _em_deinstall -> _em_uninstall, emd_deinstall -> emd_uninstall.
Make _em_install and _em_uninstall user callable.


git-svn-id: svn://svn.cc65.org/cc65/trunk@1962 b7a2c559-68d2-44c3-8de9-860c34a00d81
2003-02-10 23:01:13 +00:00

32 lines
659 B
ArmAsm

;
; Ullrich von Bassewitz, 2002-11-29
;
; unsigned char __fastcall__ em_unload (void);
; /* Unload the currently loaded driver. */
.import em_clear_ptr
.include "em-kernel.inc"
.include "em-error.inc"
.include "modload.inc"
_em_unload:
lda _em_drv
ora _em_drv+1
beq no_driver ; No driver
jsr emd_uninstall ; Deinstall the driver
lda _em_drv
ldx _em_drv+1
jsr _mod_free ; Free the driver
jmp em_clear_ptr ; Clear the driver pointer, return zero
no_driver:
tax ; X = 0
lda #EM_ERR_NO_DRIVER
rts