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ATmegaxxxx - add __AVR_HAVE_RAMPZ__
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Phillip Stevens
parent
520456577a
commit
5052273cd7
1 changed files with 111 additions and 8 deletions
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@ -216,16 +216,19 @@ void wdt_interrupt_reset_enable (const uint8_t value)
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*
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* r0 is set to __tmp_reg__ as the compiler expects it to be thus.
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*
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* #if defined(__AVR_3_BYTE_PC__) && defined(__AVR_HAVE_RAMPZ__)
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* #define __RAMPZ__ 0x3B
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* #if defined(__AVR_3_BYTE_PC__)
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* #define __EIND__ 0x3C
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* #endif
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*
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* #if defined(__AVR_HAVE_RAMPZ__)
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* #define __RAMPZ__ 0x3B
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* #endif
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*
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* The interrupts will have been disabled during the call to portSAVE_CONTEXT()
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* so we need not worry about reading/writing to the stack pointer.
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*/
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#if defined(__AVR_3_BYTE_PC__) && defined(__AVR_HAVE_RAMPZ__)
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/* 3-Byte PC Save */
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/* 3-Byte PC Save with RAMPZ */
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#define portSAVE_CONTEXT() \
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__asm__ __volatile__ ( "push __tmp_reg__ \n\t" \
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"in __tmp_reg__, __SREG__ \n\t" \
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@ -274,6 +277,54 @@ void wdt_interrupt_reset_enable (const uint8_t value)
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"in __tmp_reg__, __SP_H__ \n\t" \
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"st x+, __tmp_reg__ \n\t" \
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);
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#elif defined(__AVR_3_BYTE_PC__)
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/* 3-Byte PC Save */
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#define portSAVE_CONTEXT() \
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__asm__ __volatile__ ( "push __tmp_reg__ \n\t" \
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"in __tmp_reg__, __SREG__ \n\t" \
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"cli \n\t" \
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"push __tmp_reg__ \n\t" \
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"in __tmp_reg__, 0x3C \n\t" \
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"push __tmp_reg__ \n\t" \
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"push __zero_reg__ \n\t" \
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"clr __zero_reg__ \n\t" \
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"push r2 \n\t" \
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"push r3 \n\t" \
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"push r4 \n\t" \
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"push r5 \n\t" \
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"push r6 \n\t" \
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"push r7 \n\t" \
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"push r8 \n\t" \
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"push r9 \n\t" \
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"push r10 \n\t" \
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"push r11 \n\t" \
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"push r12 \n\t" \
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"push r13 \n\t" \
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"push r14 \n\t" \
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"push r15 \n\t" \
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"push r16 \n\t" \
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"push r17 \n\t" \
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"push r18 \n\t" \
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"push r19 \n\t" \
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"push r20 \n\t" \
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"push r21 \n\t" \
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"push r22 \n\t" \
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"push r23 \n\t" \
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"push r24 \n\t" \
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"push r25 \n\t" \
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"push r26 \n\t" \
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"push r27 \n\t" \
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"push r28 \n\t" \
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"push r29 \n\t" \
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"push r30 \n\t" \
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"push r31 \n\t" \
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"lds r26, pxCurrentTCB \n\t" \
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"lds r27, pxCurrentTCB + 1 \n\t" \
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"in __tmp_reg__, __SP_L__ \n\t" \
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"st x+, __tmp_reg__ \n\t" \
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"in __tmp_reg__, __SP_H__ \n\t" \
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"st x+, __tmp_reg__ \n\t" \
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);
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#else
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/* 2-Byte PC Save */
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#define portSAVE_CONTEXT() \
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@ -327,7 +378,7 @@ void wdt_interrupt_reset_enable (const uint8_t value)
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* the context save so we can write to the stack pointer.
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*/
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#if defined(__AVR_3_BYTE_PC__) && defined(__AVR_HAVE_RAMPZ__)
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/* 3-Byte PC Restore */
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/* 3-Byte PC Restore with RAMPZ */
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#define portRESTORE_CONTEXT() \
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__asm__ __volatile__ ( "lds r26, pxCurrentTCB \n\t" \
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"lds r27, pxCurrentTCB + 1 \n\t" \
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@ -374,6 +425,52 @@ void wdt_interrupt_reset_enable (const uint8_t value)
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"out __SREG__, __tmp_reg__ \n\t" \
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"pop __tmp_reg__ \n\t" \
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);
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#elif defined(__AVR_3_BYTE_PC__)
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/* 3-Byte PC Restore with RAMPZ */
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#define portRESTORE_CONTEXT() \
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__asm__ __volatile__ ( "lds r26, pxCurrentTCB \n\t" \
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"lds r27, pxCurrentTCB + 1 \n\t" \
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"ld r28, x+ \n\t" \
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"out __SP_L__, r28 \n\t" \
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"ld r29, x+ \n\t" \
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"out __SP_H__, r29 \n\t" \
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"pop r31 \n\t" \
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"pop r30 \n\t" \
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"pop r29 \n\t" \
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"pop r28 \n\t" \
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"pop r27 \n\t" \
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"pop r26 \n\t" \
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"pop r25 \n\t" \
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"pop r24 \n\t" \
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"pop r23 \n\t" \
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"pop r22 \n\t" \
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"pop r21 \n\t" \
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"pop r20 \n\t" \
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"pop r19 \n\t" \
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"pop r18 \n\t" \
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"pop r17 \n\t" \
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"pop r16 \n\t" \
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"pop r15 \n\t" \
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"pop r14 \n\t" \
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"pop r13 \n\t" \
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"pop r12 \n\t" \
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"pop r11 \n\t" \
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"pop r10 \n\t" \
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"pop r9 \n\t" \
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"pop r8 \n\t" \
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"pop r7 \n\t" \
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"pop r6 \n\t" \
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"pop r5 \n\t" \
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"pop r4 \n\t" \
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"pop r3 \n\t" \
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"pop r2 \n\t" \
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"pop __zero_reg__ \n\t" \
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"pop __tmp_reg__ \n\t" \
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"out 0x3C, __tmp_reg__ \n\t" \
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"pop __tmp_reg__ \n\t" \
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"out __SREG__, __tmp_reg__ \n\t" \
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"pop __tmp_reg__ \n\t" \
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);
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#else
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/* 2-Byte PC Restore */
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#define portRESTORE_CONTEXT() \
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@ -445,7 +542,7 @@ uint16_t usAddress;
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/* The start of the task code will be popped off the stack last, so place
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it on first. */
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#if defined(__AVR_3_BYTE_PC__) && defined(__AVR_HAVE_RAMPZ__)
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#if defined(__AVR_3_BYTE_PC__)
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/* The AVR ATmega2560/ATmega2561 have 256KBytes of program memory and a 17-bit
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* program counter. When a code address is stored on the stack, it takes 3 bytes
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* instead of 2 for the other ATmega* chips.
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@ -485,12 +582,18 @@ uint16_t usAddress;
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*pxTopOfStack = portFLAGS_INT_ENABLED;
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pxTopOfStack--;
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#if defined(__AVR_3_BYTE_PC__) && defined(__AVR_HAVE_RAMPZ__)
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/* If we have an ATmega256x, we are also saving the RAMPZ and EIND registers.
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* We should default those to 0.
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#if defined(__AVR_3_BYTE_PC__)
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/* If we have an ATmega256x, we are also saving the EIND register.
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* We should default to 0.
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*/
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*pxTopOfStack = ( StackType_t ) 0x00; /* EIND */
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pxTopOfStack--;
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#endif
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#if defined(__AVR_HAVE_RAMPZ__)
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/* If we have an ATmega2560, we are also saving the RAMPZ register.
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* We should default to 0.
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*/
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*pxTopOfStack = ( StackType_t ) 0x00; /* RAMPZ */
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pxTopOfStack--;
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#endif
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