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| author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2011-11-18 22:37:27 +0000 |
|---|---|---|
| committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2011-11-18 22:37:27 +0000 |
| commit | 4c9dba435f3e93077bd3c9d68894f025db83e1cb (patch) | |
| tree | 2c82194f36f24ffcc743eff72603bdaee78e7735 /nuttx/arch/mips/src/pic32mx/excptmacros.h | |
| parent | 133a0934d05d6ffa700582e77c756ffdb188c825 (diff) | |
| download | px4-nuttx-4c9dba435f3e93077bd3c9d68894f025db83e1cb.tar.gz px4-nuttx-4c9dba435f3e93077bd3c9d68894f025db83e1cb.tar.bz2 px4-nuttx-4c9dba435f3e93077bd3c9d68894f025db83e1cb.zip | |
More PIC32 fixes
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4101 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/arch/mips/src/pic32mx/excptmacros.h')
| -rw-r--r-- | nuttx/arch/mips/src/pic32mx/excptmacros.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/nuttx/arch/mips/src/pic32mx/excptmacros.h b/nuttx/arch/mips/src/pic32mx/excptmacros.h index 4a5e9f54d..316ead31c 100644 --- a/nuttx/arch/mips/src/pic32mx/excptmacros.h +++ b/nuttx/arch/mips/src/pic32mx/excptmacros.h @@ -114,6 +114,7 @@ * bits (Status<15:10>) and the ErrorEPC register, respectively, on the stack. ..." */ +#ifdef CONFIG_PIC32MX_NESTED_INTERRUPTS // Does not work! mfc0 k0, MIPS32_CP0_CAUSE mfc0 k1, MIPS32_CP0_EPC @@ -148,6 +149,25 @@ /* And Enable interrupts */ mtc0 k1, MIPS32_CP0_STATUS +#else + /* Get the EPC and STATUS register (Don't bother with the CAUSE register if we are + * not supporting nested interrupts) + */ + + mfc0 k0, MIPS32_CP0_EPC + mfc0 k1, MIPS32_CP0_STATUS + + /* Create the register context stack frame large enough to hold the entire register + * save array. + */ + + addiu sp, sp, -XCPTCONTEXT_SIZE + + /* Save the EPC and STATUS in the register context array */ + + sw k0, REG_EPC(sp) + sw k1, REG_STATUS(sp) +#endif /* Save floating point registers */ @@ -315,6 +335,10 @@ lw gp, REG_GP(k1) #endif + /* $29 = sp: Stack pointer */ + + lw sp, REG_SP(k1) + /* $30 = either s8 or fp: Depends if a frame pointer is used or not */ lw s8, REG_S8(k1) |