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Alfred Gedeon 2020-07-01 22:27:40 -07:00 • committed by alfred gedeon
parent a5dbc2b1de
commit 718178c68a
406 changed files with 108795 additions and 106323 deletions
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67
portable/BCC/16BitDOS/common/portasm.h
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@ -46,41 +46,40 @@ void portSWITCH_CONTEXT( void );
void portFIRST_CONTEXT( void );
/* There are slightly different versions depending on whether you are building
to include debugger information. If debugger information is used then there
are a couple of extra bytes left of the ISR stack (presumably for use by the
debugger). The true stack pointer is then stored in the bp register. We add
2 to the stack pointer to remove the extra bytes before we restore our context. */
* to include debugger information. If debugger information is used then there
* are a couple of extra bytes left of the ISR stack (presumably for use by the
* debugger). The true stack pointer is then stored in the bp register. We add
* 2 to the stack pointer to remove the extra bytes before we restore our context. */
#define portSWITCH_CONTEXT() \
asm { mov ax, seg pxCurrentTCB } \
asm { mov ds, ax } \
asm { les bx, pxCurrentTCB } /* Save the stack pointer into the TCB. */ \
asm { mov es:0x2[ bx ], ss } \
asm { mov es:[ bx ], sp } \
asm { call far ptr vTaskSwitchContext } /* Perform the switch. */ \
asm { mov ax, seg pxCurrentTCB } /* Restore the stack pointer from the TCB. */ \
asm { mov ds, ax } \
asm { les bx, dword ptr pxCurrentTCB } \
asm { mov ss, es:[ bx + 2 ] } \
asm { mov sp, es:[ bx ] }
#define portSWITCH_CONTEXT() \
asm { mov ax, seg pxCurrentTCB } \
asm { mov ds, ax } \
asm { les bx, pxCurrentTCB } /* Save the stack pointer into the TCB. */ \
asm { mov es : 0x2[ bx ], ss } \
asm { mov es:[ bx ], sp } \
asm { call far ptr vTaskSwitchContext } /* Perform the switch. */ \
asm { mov ax, seg pxCurrentTCB } /* Restore the stack pointer from the TCB. */ \
asm { mov ds, ax } \
asm { les bx, dword ptr pxCurrentTCB } \
asm { mov ss, es:[ bx + 2 ] } \
asm { mov sp, es:[ bx ] }
#define portFIRST_CONTEXT() \
__asm { mov ax, seg pxCurrentTCB } \
__asm { mov ds, ax } \
__asm { les bx, dword ptr pxCurrentTCB } \
__asm { mov ss, es:[ bx + 2 ] } \
__asm { mov sp, es:[ bx ] } \
__asm { pop bp } \
__asm { pop di } \
__asm { pop si } \
__asm { pop ds } \
__asm { pop es } \
__asm { pop dx } \
__asm { pop cx } \
__asm { pop bx } \
__asm { pop ax } \
__asm { iret }
#define portFIRST_CONTEXT() \
__asm { mov ax, seg pxCurrentTCB } \
__asm { mov ds, ax } \
__asm { les bx, dword ptr pxCurrentTCB } \
__asm { mov ss, es:[ bx + 2 ] } \
__asm { mov sp, es:[ bx ] } \
__asm { pop bp } \
__asm { pop di } \
__asm { pop si } \
__asm { pop ds } \
__asm { pop es } \
__asm { pop dx } \
__asm { pop cx } \
__asm { pop bx } \
__asm { pop ax } \
__asm { iret }
#endif
#endif /* ifndef PORT_ASM_H */