Introduce popargs and arg macros to distinguish PASCAL/STDCALL conventions.
GCC has -mrtd but the args are pushed in reverse versus PASCAL. So asm routines have to use macros to obtain the stack arguments. For the complex call_nls assembly, revert the arguments in C using a preprocessor macro.
This commit is contained in:
Bart Oldeman
Kenneth J Davis
parent
f6d62165e0
commit
97003a8aca
@ -29,6 +29,7 @@
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;
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%include "../kernel/segs.inc"
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%include "../hdr/stacks.inc"
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segment HMA_TEXT
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;
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@ -112,7 +113,8 @@ fl_common:
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push bp ; setup stack frame
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mov bp,sp
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mov cx,[bp+0Ch] ; cylinder number
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arg drive, head, track, sector, count, {buffer,4}
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mov cx,[.track] ; cylinder number
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mov al,1 ; this should be an error code
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cmp ch,3 ; this code can't write above 3FFh=1023
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@ -121,13 +123,13 @@ fl_common:
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xchg ch,cl ; ch=low 8 bits of cyl number
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ror cl,1 ; bits 8-9 of cylinder number...
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ror cl,1 ; ...to bits 6-7 in CL
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or cl,[bp+0Ah] ; or in the sector number (bits 0-5)
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or cl,[.sector] ; or in the sector number (bits 0-5)
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mov al,[bp+08h] ; count of sectors to read/write/...
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les bx,[bp+04h] ; Load 32 bit buffer ptr into ES:BX
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mov al,[.count] ; count of sectors to read/write/...
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les bx,[.buffer] ; Load 32 bit buffer ptr into ES:BX
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mov dl,[bp+10h] ; drive (if or'ed 80h its a hard drive)
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mov dh,[bp+0Eh] ; get the head number
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mov dl,[.drive] ; drive (if or'ed 80h its a hard drive)
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mov dh,[.head] ; get the head number
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int 13h ; process sectors
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@ -152,9 +154,10 @@ FL_LBA_READWRITE:
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push ds
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push si ; wasn't in kernel < KE2024Bo6!!
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mov dl,[bp+10] ; drive (if or'ed with 80h a hard drive)
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mov ax,[bp+8] ; get the command
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lds si,[bp+4] ; get far dap pointer
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arg drive, mode, {dap_p,4}
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mov dl,[.drive] ; drive (if or'ed with 80h a hard drive)
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mov ax,[.mode] ; get the command
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lds si,[.dap_p] ; get far dap pointer
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int 13h ; read from/write to drive
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pop si
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@ -182,8 +185,7 @@ FL_READKEY: xor ah, ah
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global FL_SETDISKTYPE
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FL_SETDISKTYPE:
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pop bx ; return address
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pop ax ; disk format type (al)
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pop dx ; drive number (dl)
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popargs dx,ax ; drive number(dl),disk format type(al)
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push bx ; restore stack
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mov ah,17h ; floppy set disk type for format
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int 13h
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@ -198,9 +200,7 @@ ret_AH:
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global FL_SETMEDIATYPE
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FL_SETMEDIATYPE:
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pop ax ; return address
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pop bx ; sectors/track
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pop cx ; number of tracks
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pop dx ; drive number
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popargs dx,cx,bx ; drive number,#tracks,sectors/track
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push ax ; restore stack
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push di
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@ -29,6 +29,7 @@
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;
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%include "../kernel/segs.inc"
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%include "../hdr/stacks.inc"
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segment HMA_TEXT
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@ -47,13 +48,14 @@ WRITEATCLOCK:
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; bcdMinutes = 6
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; bcdHours = 8
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; bcdDays = 10
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mov ch,byte [bp+8] ;bcdHours
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mov cl,byte [bp+6] ;bcdMinutes
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mov dh,byte [bp+4] ;bcdSeconds
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arg bcdDays, bcdHours, bcdMinutes, bcdSeconds
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mov ch,byte [.bcdHours]
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mov cl,byte [.bcdMinutes]
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mov dh,byte [.bcdSeconds]
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mov dl,0
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mov ah,3
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int 1ah
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mov bx,word [bp+10] ;bcdDays
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mov bx,word [.bcdDays]
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mov dx,word [bx]
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mov cx,word [bx+2]
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mov ah,5
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@ -28,6 +28,7 @@
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; $Header$
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;
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%include "../kernel/segs.inc"
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%include "../hdr/stacks.inc"
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segment HMA_TEXT
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@ -40,8 +41,7 @@ segment HMA_TEXT
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WRITEPCCLOCK:
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; Ticks = 4
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pop ax ; return address
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pop dx
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pop cx ; Ticks
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popargs {dx,cx} ; Ticks
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push ax ; restore stack
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mov ah,1
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int 1ah
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@ -196,3 +196,57 @@ irp_hi equ 26
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%endif
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%ENDIF
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; macros to define stack arguments
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; arg a, {b,4}, c
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; defines a and c as "word" arguments and b as a "dword" argument
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; for STDCALL defines .a as [bp+4], .b as [bp+6] and .c as [bp+10]
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; for PASCAL defines .a as [bp+10], .b as [bp+6] and .c as [bp+4]
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;
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; popargs bx, {dx,ax}, cx pops these arguments of the stack (for PASCAL
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; in reverse order). Here dx,ax is a dword argument dx:ax where dx is
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; the high word. The caller is responsible for dealing with instruction
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; pointer (ip) on the stack.
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%ifdef gcc
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%define STDCALL
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%else
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%define PASCAL
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%endif
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%macro definearg 1-2 2
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%xdefine .%1 bp+.argloc
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%assign .argloc .argloc+%2
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%endmacro
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%macro arg 1-*
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%assign .argloc 4
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%rep %0
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%ifdef PASCAL
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%rotate -1
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%endif
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definearg %1
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%ifdef STDCALL
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%rotate 1
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%endif
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%endrep
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%endmacro
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%macro multipop 1-*
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%rep %0
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%rotate -1
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pop %1
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%endrep
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%endmacro
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%macro popargs 1-*
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%rep %0
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%ifdef PASCAL
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%rotate -1
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%endif
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multipop %1
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%ifdef STDCALL
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%rotate 1
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%endif
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%endrep
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%endmacro
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@ -48,6 +48,7 @@
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%ifndef WATCOM_INIT
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%include "segs.inc"
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%include "stacks.inc"
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%ifdef _INIT
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@ -134,9 +135,10 @@ pascal_setup:
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cld
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mov bl,6 ; majority (4) wants that
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mov cx,[4+bp] ; majority (8) wants that (near and far)
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mov si,[6+bp] ; majority (3) wants that (near)
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mov di,[8+bp] ; majority (3) wants that (near)
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arg arg1, arg2, arg3
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mov cx,[.arg3] ; majority (8) wants that (near and far)
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mov si,[.arg2] ; majority (3) wants that (near)
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mov di,[.arg1] ; majority (3) wants that (near)
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jmp ax
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@ -192,14 +194,17 @@ FMEMCPYBACK:
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FMEMCPY:
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call pascal_setup
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arg {d,4}, {s,4}, n
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; Get the repetition count, n preset above
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; mov cx,[bp+4]
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%ifdef STDCALL
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mov cx,[.n]
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%endif
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; Get the far source pointer, s
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lds si,[bp+6]
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lds si,[.s]
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; Get the far destination pointer d
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les di,[bp+10]
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les di,[.d]
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mov bl,10
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jmp short domemcpy
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@ -212,14 +217,17 @@ FMEMCPY:
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FMEMSET:
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call pascal_setup
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arg {d,4}, ch, n
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; Get the repetition count, n - preset above
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; mov cx,[bp+4]
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%ifdef STDCALL
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mov cx,[.n]
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%endif
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; Get the fill byte ch
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mov ax,[bp+6]
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mov ax,[.ch]
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; Get the far source pointer, s
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les di,[bp+8]
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les di,[.d]
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mov bl,8
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domemset:
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@ -240,11 +248,12 @@ domemset:
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MEMSET:
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call pascal_setup
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arg d, ch, n
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; Get the repitition count, n - preset above
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; mov cx,[bp+4]
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; Get the char ch
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mov ax, [bp+6]
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mov ax, [.ch]
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; Get the far source pointer, d - preset above
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; mov di,[bp+8]
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@ -282,11 +291,12 @@ pascal_return:
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FSTRCPY:
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call pascal_setup
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arg {dest,4}, {src,4}
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; Get the source pointer, ss
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lds si,[bp+4]
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lds si,[.src]
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; and the destination pointer, d
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les di,[bp+8]
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les di,[.dest]
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mov bl,8
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@ -299,11 +309,13 @@ STRCPY:
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call pascal_setup
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%ifdef PASCAL
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; Get the source pointer, ss
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mov si,[bp+4]
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; and the destination pointer, d
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mov di,[bp+6]
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%endif
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mov bl,4
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dostrcpy:
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@ -334,7 +346,9 @@ FSTRLEN:
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STRLEN:
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call pascal_setup
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; Get the source pointer, ss
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%ifdef PASCAL
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mov di,[bp+4]
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%endif
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mov bl,2
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dostrlen:
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@ -356,8 +370,11 @@ STRCHR:
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call pascal_setup
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; Get the source pointer, ss
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; mov cx,[bp+4] - preset above
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; mov si,[bp+6] - preset above
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arg src, ch
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%ifdef STDCALL ; preset above for PASCAL
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mov cx,[.ch]
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mov si,[.src]
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%endif
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mov bl,4
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strchr_loop:
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@ -388,11 +405,12 @@ strchr_found1:
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FSTRCHR:
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call pascal_setup
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arg {src,4}, ch
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; Get ch (preset above)
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;mov cx, [bp+4]
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;and the source pointer, src
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lds si, [bp+6]
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lds si, [.src]
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;mov bl, 6 - preset above
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@ -403,14 +421,17 @@ FSTRCHR:
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FMEMCHR:
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call pascal_setup
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arg {src,4}, ch, n
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; Get the length - preset above
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; mov cx, [bp+4]
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%ifdef STDCALL
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mov cx, [.n]
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%endif
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; and the search value
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mov ax, [bp+6]
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mov ax, [.ch]
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; and the source pointer, ss
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les di, [bp+8]
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les di, [.src]
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mov bl, 8
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@ -426,11 +447,12 @@ FMEMCHR:
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FSTRCMP:
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call pascal_setup
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arg {dest,4}, {src,4}
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; Get the source pointer, ss
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lds si,[bp+4]
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lds si,[.src]
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; and the destination pointer, d
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les di,[bp+8]
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les di,[.dest]
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mov bl,8
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@ -507,14 +529,17 @@ strncmp_loop:
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FMEMCMP:
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call pascal_setup
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arg {dest,4}, {src,4}, n
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; the length - preset above
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; mov cx, [bp+4]
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%ifdef STDCALL
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mov cx, [.n]
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%endif
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; Get the source pointer, ss
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les di,[bp+6]
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les di,[.src]
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; and the destination pointer, d
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lds si,[bp+10]
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lds si,[.dest]
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mov bl,10
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@ -51,17 +51,18 @@ segment HMA_TEXT
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push si
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push ds ; sp=bp-8
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lds si,[bp+4] ; ds:si = device header
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les bx,[bp+8] ; es:bx = request header
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arg {rhp,4}, {dhp,4}
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lds si,[.dhp] ; ds:si = device header
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les bx,[.rhp] ; es:bx = request header
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mov ax, [si+6] ; construct strategy address
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mov [bp+4], ax
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mov [.dhp], ax
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push si ; the bloody fucking RTSND.DOS
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push di ; driver destroys SI,DI (tom 14.2.03)
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call far[bp+4] ; call far the strategy
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call far[.dhp] ; call far the strategy
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pop di
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pop si
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@ -69,8 +70,8 @@ segment HMA_TEXT
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; Protect386Registers ; old free-EMM386 versions destroy regs in their INIT method
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mov ax,[si+8] ; construct 'interrupt' address
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mov [bp+4],ax ; construct interrupt address
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call far[bp+4] ; call far the interrupt
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mov [.dhp],ax ; construct interrupt address
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call far[.dhp] ; call far the interrupt
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; Restore386Registers ; less stack load and better performance...
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@ -213,10 +213,7 @@ SHARE_CHECK:
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SHARE_OPEN_CHECK:
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mov es, si ; save si
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pop ax ; return address
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pop dx ; sharemode;
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pop cx ; openmode;
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pop bx ; pspseg;
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pop si ; filename
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popargs si,bx,cx,dx ; filename,pspseg,openmode,sharemode;
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push ax ; return address
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mov ax, 0x10a0
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int 0x2f ; returns ax
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@ -261,12 +258,13 @@ share_common:
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mov bp, sp
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push si
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push di
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mov bx, [bp + 16] ; pspseg
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mov cx, [bp + 14] ; fileno
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mov si, [bp + 12] ; high word of ofs
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mov di, [bp + 10] ; low word of ofs
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les dx, [bp + 6] ; len
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or ax, [bp + 4] ; allowcriter/unlock
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arg pspseg, fileno, {ofs,4}, {len,4}, allowcriter
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mov bx, [.pspseg] ; pspseg
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mov cx, [.fileno] ; fileno
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mov si, [.ofs+2] ; high word of ofs
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mov di, [.ofs] ; low word of ofs
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les dx, [.len] ; len
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or ax, [.allowcriter] ; allowcriter/unlock
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int 0x2f
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pop di
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pop si
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@ -323,10 +321,8 @@ remote_lock_unlock:
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global NETWORK_REDIRECTOR_MX
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NETWORK_REDIRECTOR_MX:
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pop bx ; ret address
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pop cx ; stack value (arg); cx in remote_rw
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pop dx ; off s
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pop es ; seg s
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pop ax ; cmd (ax)
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popargs ax,{es,dx},cx ; cmd (ax), seg:off s
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; stack value (arg); cx in remote_rw
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push bx ; ret address
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call_int2f:
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push bp
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@ -497,7 +493,8 @@ FLOPPY_CHANGE:
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segment INIT_TEXT
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; int ASMPASCAL UMB_get_largest(void FAR * driverAddress,
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; UCOUNT * seg, UCOUNT * size);
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global UMB_GET_LARGEST
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arg {driverAddress,4}, argseg, size
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global UMB_GET_LARGEST
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UMB_GET_LARGEST:
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push bp
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@ -505,7 +502,7 @@ UMB_GET_LARGEST:
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mov dx,0xffff ; go for broke!
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mov ax,1000h ; get the UMBs
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call far [bp+8] ; Call the driver
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call far [.driverAddress] ; Call the driver
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;
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; bl = 0xB0 and ax = 0 so do it again.
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@ -517,7 +514,7 @@ UMB_GET_LARGEST:
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je umbt_error
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mov ax,1000h ; dx set with largest size
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call far [bp+8] ; Call the driver
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call far [.driverAddress] ; Call the driver
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cmp ax,1
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jne umbt_error
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@ -525,10 +522,10 @@ UMB_GET_LARGEST:
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; and the size
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mov cx,bx ; *seg = segment
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mov bx, [bp+6]
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mov bx, [.argseg]
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mov [bx],cx
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mov bx, [bp+4] ; *size = size
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mov bx, [.size] ; *size = size
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mov [bx],dx
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umbt_ret:
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@ -26,6 +26,7 @@
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;
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%include "segs.inc"
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%include "stacks.inc"
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%macro INTR 0
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@ -41,10 +42,11 @@
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%endif
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push ds
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||||
|
||||
mov ax, [bp+6] ; interrupt number
|
||||
arg nr, rp
|
||||
mov ax, [.nr] ; interrupt number
|
||||
mov [cs:%%intr_1-1], al
|
||||
jmp short %%intr_2 ; flush the instruction cache
|
||||
%%intr_2 mov bx, [bp+4] ; regpack structure
|
||||
%%intr_2 mov bx, [.rp] ; regpack structure
|
||||
mov ax, [bx]
|
||||
mov cx, [bx+4]
|
||||
mov dx, [bx+6]
|
||||
@ -66,7 +68,7 @@
|
||||
%ifdef WATCOM
|
||||
mov bx, [ss:bx+24] ; address of REGPACK
|
||||
%else
|
||||
mov bx, [ss:bx+16] ; address of REGPACK
|
||||
mov bx, [ss:bx+12+.rp-bp] ; address of REGPACK
|
||||
%endif
|
||||
mov [bx], ax
|
||||
pop word [bx+2]
|
||||
@ -98,9 +100,7 @@ segment HMA_TEXT
|
||||
global RES_DOSEXEC
|
||||
RES_DOSEXEC:
|
||||
pop es ; ret address
|
||||
pop dx ; filename
|
||||
pop bx ; exec block
|
||||
pop ax ; mode
|
||||
popargs ax,bx,dx ; mode, exec block, filename
|
||||
push es ; ret address
|
||||
mov ah, 4bh
|
||||
push ds
|
||||
@ -115,9 +115,7 @@ no_exec_error:
|
||||
global RES_READ
|
||||
RES_READ:
|
||||
pop ax ; ret address
|
||||
pop cx ; count
|
||||
pop dx ; buf
|
||||
pop bx ; fd
|
||||
popargs bx,dx,cx ; fd, buf, count
|
||||
push ax ; ret address
|
||||
mov ah, 3fh
|
||||
int 21h
|
||||
@ -144,10 +142,7 @@ INIT_CALL_INTR:
|
||||
global INIT_CALL_XMSCALL
|
||||
INIT_CALL_XMSCALL:
|
||||
pop bx ; ret address
|
||||
pop dx
|
||||
pop ax
|
||||
pop cx ; driver address
|
||||
pop es
|
||||
popargs {es,cx},ax,dx
|
||||
|
||||
push cs ; ret address
|
||||
push bx
|
||||
@ -190,8 +185,7 @@ KEYCHECK:
|
||||
INIT_DOSOPEN:
|
||||
;; init calling DOS through ints:
|
||||
pop bx ; ret address
|
||||
pop ax ; flags
|
||||
pop dx ; pathname
|
||||
popargs dx,ax ; pathname, flags
|
||||
push bx ; ret address
|
||||
mov ah, 3dh
|
||||
;; AX will have the file handle
|
||||
@ -216,9 +210,7 @@ CLOSE:
|
||||
global READ
|
||||
READ:
|
||||
pop ax ; ret address
|
||||
pop cx ; count
|
||||
pop dx ; buf
|
||||
pop bx ; fd
|
||||
popargs bx,dx,cx ; fd,buf,count
|
||||
push ax ; ret address
|
||||
mov ah, 3fh
|
||||
jmp short common_int21
|
||||
@ -227,8 +219,7 @@ READ:
|
||||
global DUP2
|
||||
DUP2:
|
||||
pop ax ; ret address
|
||||
pop cx ; newfd
|
||||
pop bx ; oldfd
|
||||
popargs bx,cx ; oldfd,newfd
|
||||
push ax ; ret address
|
||||
mov ah, 46h
|
||||
jmp short common_int21
|
||||
@ -239,9 +230,7 @@ DUP2:
|
||||
global LSEEK
|
||||
LSEEK:
|
||||
pop ax ; ret address
|
||||
pop dx ; position low
|
||||
pop cx ; position high
|
||||
pop bx ; fd
|
||||
popargs bx,{cx,dx} ; fd, position high:low
|
||||
push ax ; ret address
|
||||
mov ax,4200h ; origin: start of file
|
||||
int 21h
|
||||
@ -265,9 +254,7 @@ INIT_PSPSET:
|
||||
global INIT_DOSEXEC
|
||||
INIT_DOSEXEC:
|
||||
pop es ; ret address
|
||||
pop dx ; filename
|
||||
pop bx ; exec block
|
||||
pop ax ; mode
|
||||
popargs ax,bx,dx ; mode, exec block, filename
|
||||
push es ; ret address
|
||||
mov ah, 4bh
|
||||
push ds
|
||||
@ -313,8 +300,7 @@ ALLOCMEM:
|
||||
global SET_DTA
|
||||
SET_DTA:
|
||||
pop ax ; ret address
|
||||
pop dx ; off(dta)
|
||||
pop bx ; seg(dta)
|
||||
popargs {bx,dx} ; seg:off(dta)
|
||||
push ax ; ret address
|
||||
mov ah, 1ah
|
||||
push ds
|
||||
|
||||
@ -29,6 +29,7 @@
|
||||
;
|
||||
|
||||
%include "segs.inc"
|
||||
%include "stacks.inc"
|
||||
%include "ludivmul.inc"
|
||||
|
||||
|
||||
|
||||
@ -51,6 +51,15 @@
|
||||
; destroys:
|
||||
; flags
|
||||
;
|
||||
%ifdef STDCALL
|
||||
push bp
|
||||
mov bp, sp
|
||||
mov ax, [bp+6]
|
||||
mov dx, [bp+8]
|
||||
mov bx, [bp+10]
|
||||
mov cx, [bp+12]
|
||||
pop bp
|
||||
%endif
|
||||
|
||||
test cx, cx ; divisor > 2^32-1 ?
|
||||
jnz %%big_divisor ; yes, divisor > 32^32-1
|
||||
@ -113,12 +122,10 @@
|
||||
|
||||
%macro LSHLU 0
|
||||
pop bx
|
||||
pop ax
|
||||
pop dx
|
||||
pop cx
|
||||
popargs {dx,ax},cx
|
||||
push bx
|
||||
jcxz %%ret
|
||||
%%loop: shl ax, 1
|
||||
%%loop: shl ax, 1
|
||||
rcl dx, 1
|
||||
loop %%loop
|
||||
%%ret: ret 6
|
||||
@ -126,12 +133,10 @@
|
||||
|
||||
%macro LSHRU 0
|
||||
pop bx
|
||||
pop ax
|
||||
pop dx
|
||||
pop cx
|
||||
popargs {dx,ax},cx
|
||||
push bx
|
||||
jcxz %%ret
|
||||
%%loop: shr dx, 1
|
||||
%%loop: shr dx, 1
|
||||
rcr ax, 1
|
||||
loop %%loop
|
||||
%%ret: ret 6
|
||||
|
||||
@ -98,6 +98,9 @@ struct nlsInfoBlock ASM nlsInfo = {
|
||||
***** MUX calling functions ****************************************
|
||||
********************************************************************/
|
||||
|
||||
#ifdef __GNUC__
|
||||
#define call_nls(a,b,c,d,e,f) call_nls(f,e,d,c,b,a)
|
||||
#endif
|
||||
extern long ASMPASCAL call_nls(UWORD, VOID FAR *, UWORD, UWORD, UWORD, UWORD);
|
||||
/*== DS:SI _always_ points to global NLS info structure <-> no
|
||||
* subfct can use these registers for anything different. ==ska*/
|
||||
|
||||
Loading…
Reference in New Issue
Block a user