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Add support for double precision floating point.

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This commit is contained in:
Richard Barry 2009-06-30 19:24:32 +00:00
parent 09f991277e
commit e36ece8d42
2 changed files with 102 additions and 2 deletions
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14
Source/portable/GCC/PPC405_Xilinx/port.c
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@ -80,6 +80,10 @@
#define portINITIAL_MSR ( portCRITICAL_INTERRUPT_ENABLE | portEXTERNAL_INTERRUPT_ENABLE | portMACHINE_CHECK_ENABLE | portAPU_PRESENT | portFCM_FPU_PRESENT )
extern const unsigned _SDA_BASE_;
extern const unsigned _SDA2_BASE_;
/*-----------------------------------------------------------*/
/*
@ -123,12 +127,18 @@ portSTACK_TYPE *pxPortInitialiseStack( portSTACK_TYPE *pxTopOfStack, pdTASK_CODE
pxTopOfStack--;
/* EABI stack frame. */
pxTopOfStack -= 30; /* Previous backchain and LR, R31 to R4 inclusive. */
pxTopOfStack -= 20; /* Previous backchain and LR, R31 to R4 inclusive. */
/* Parameters in R13. */
*pxTopOfStack = ( portSTACK_TYPE ) &_SDA_BASE_; /* address of the first small data area */
pxTopOfStack -= 10;
/* Parameters in R3. */
*pxTopOfStack = ( portSTACK_TYPE ) pvParameters;
pxTopOfStack--;
*pxTopOfStack = 0x02020202UL; /* R2. */
/* Parameters in R2. */
*pxTopOfStack = ( portSTACK_TYPE ) &_SDA2_BASE_; /* address of the second small data area */
pxTopOfStack--;
/* R1 is the stack pointer so is omitted. */