Add driver lib for projects which require it

1 files changed, 457 insertions, 0 deletions

diff --git a/driverlib/cpu.c b/driverlib/cpu.c
new file mode 100644
index 0000000..dad2ad4
--- /dev/null
+++ b/driverlib/cpu.c
@@ -0,0 +1,457 @@
+//*****************************************************************************

+//

+// cpu.c - Instruction wrappers for special CPU instructions needed by the

+//         drivers.

+//

+// Copyright (c) 2006-2014 Texas Instruments Incorporated.  All rights reserved.

+// Software License Agreement

+// 

+//   Redistribution and use in source and binary forms, with or without

+//   modification, are permitted provided that the following conditions

+//   are met:

+// 

+//   Redistributions of source code must retain the above copyright

+//   notice, this list of conditions and the following disclaimer.

+// 

+//   Redistributions in binary form must reproduce the above copyright

+//   notice, this list of conditions and the following disclaimer in the

+//   documentation and/or other materials provided with the  

+//   distribution.

+// 

+//   Neither the name of Texas Instruments Incorporated nor the names of

+//   its contributors may be used to endorse or promote products derived

+//   from this software without specific prior written permission.

+// 

+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

+// 

+// This is part of revision 2.1.0.12573 of the Tiva Peripheral Driver Library.

+//

+//*****************************************************************************

+

+#include <stdint.h>

+#include "driverlib/cpu.h"

+

+//*****************************************************************************

+//

+// Wrapper function for the CPSID instruction.  Returns the state of PRIMASK

+// on entry.

+//

+//*****************************************************************************

+#if defined(codered) || defined(gcc) || defined(sourcerygxx)

+uint32_t __attribute__((naked))

+CPUcpsid(void)

+{

+    uint32_t ui32Ret;

+

+    //

+    // Read PRIMASK and disable interrupts.

+    //

+    __asm("    mrs     r0, PRIMASK\n"

+          "    cpsid   i\n"

+          "    bx      lr\n"

+          : "=r" (ui32Ret));

+

+    //

+    // The return is handled in the inline assembly, but the compiler will

+    // still complain if there is not an explicit return here (despite the fact

+    // that this does not result in any code being produced because of the

+    // naked attribute).

+    //

+    return(ui32Ret);

+}

+#endif

+#if defined(ewarm)

+uint32_t

+CPUcpsid(void)

+{

+    //

+    // Read PRIMASK and disable interrupts.

+    //

+    __asm("    mrs     r0, PRIMASK\n"

+          "    cpsid   i\n");

+

+    //

+    // "Warning[Pe940]: missing return statement at end of non-void function"

+    // is suppressed here to avoid putting a "bx lr" in the inline assembly

+    // above and a superfluous return statement here.

+    //

+#pragma diag_suppress=Pe940

+}

+#pragma diag_default=Pe940

+#endif

+#if defined(rvmdk) || defined(__ARMCC_VERSION)

+__asm uint32_t

+CPUcpsid(void)

+{

+    //

+    // Read PRIMASK and disable interrupts.

+    //

+    mrs     r0, PRIMASK;

+    cpsid   i;

+    bx      lr

+}

+#endif

+#if defined(ccs)

+uint32_t

+CPUcpsid(void)

+{

+    //

+    // Read PRIMASK and disable interrupts.

+    //

+    __asm("    mrs     r0, PRIMASK\n"

+          "    cpsid   i\n"

+          "    bx      lr\n");

+

+    //

+    // The following keeps the compiler happy, because it wants to see a

+    // return value from this function.  It will generate code to return

+    // a zero.  However, the real return is the "bx lr" above, so the

+    // return(0) is never executed and the function returns with the value

+    // you expect in R0.

+    //

+    return(0);

+}

+#endif

+

+//*****************************************************************************

+//

+// Wrapper function returning the state of PRIMASK (indicating whether

+// interrupts are enabled or disabled).

+//

+//*****************************************************************************

+#if defined(codered) || defined(gcc) || defined(sourcerygxx)

+uint32_t __attribute__((naked))

+CPUprimask(void)

+{

+    uint32_t ui32Ret;

+

+    //

+    // Read PRIMASK and disable interrupts.

+    //

+    __asm("    mrs     r0, PRIMASK\n"

+          "    bx      lr\n"

+          : "=r" (ui32Ret));

+

+    //

+    // The return is handled in the inline assembly, but the compiler will

+    // still complain if there is not an explicit return here (despite the fact

+    // that this does not result in any code being produced because of the

+    // naked attribute).

+    //

+    return(ui32Ret);

+}

+#endif

+#if defined(ewarm)

+uint32_t

+CPUprimask(void)

+{

+    //

+    // Read PRIMASK and disable interrupts.

+    //

+    __asm("    mrs     r0, PRIMASK\n");

+

+    //

+    // "Warning[Pe940]: missing return statement at end of non-void function"

+    // is suppressed here to avoid putting a "bx lr" in the inline assembly

+    // above and a superfluous return statement here.

+    //

+#pragma diag_suppress=Pe940

+}

+#pragma diag_default=Pe940

+#endif

+#if defined(rvmdk) || defined(__ARMCC_VERSION)

+__asm uint32_t

+CPUprimask(void)

+{

+    //

+    // Read PRIMASK and disable interrupts.

+    //

+    mrs     r0, PRIMASK;

+    bx      lr

+}

+#endif

+#if defined(ccs)

+uint32_t

+CPUprimask(void)

+{

+    //

+    // Read PRIMASK and disable interrupts.

+    //

+    __asm("    mrs     r0, PRIMASK\n"

+          "    bx      lr\n");

+

+    //

+    // The following keeps the compiler happy, because it wants to see a

+    // return value from this function.  It will generate code to return

+    // a zero.  However, the real return is the "bx lr" above, so the

+    // return(0) is never executed and the function returns with the value

+    // you expect in R0.

+    //

+    return(0);

+}

+#endif

+

+//*****************************************************************************

+//

+// Wrapper function for the CPSIE instruction.  Returns the state of PRIMASK

+// on entry.

+//

+//*****************************************************************************

+#if defined(codered) || defined(gcc) || defined(sourcerygxx)

+uint32_t __attribute__((naked))

+CPUcpsie(void)

+{

+    uint32_t ui32Ret;

+

+    //

+    // Read PRIMASK and enable interrupts.

+    //

+    __asm("    mrs     r0, PRIMASK\n"

+          "    cpsie   i\n"

+          "    bx      lr\n"

+          : "=r" (ui32Ret));

+

+    //

+    // The return is handled in the inline assembly, but the compiler will

+    // still complain if there is not an explicit return here (despite the fact

+    // that this does not result in any code being produced because of the

+    // naked attribute).

+    //

+    return(ui32Ret);

+}

+#endif

+#if defined(ewarm)

+uint32_t

+CPUcpsie(void)

+{

+    //

+    // Read PRIMASK and enable interrupts.

+    //

+    __asm("    mrs     r0, PRIMASK\n"

+          "    cpsie   i\n");

+

+    //

+    // "Warning[Pe940]: missing return statement at end of non-void function"

+    // is suppressed here to avoid putting a "bx lr" in the inline assembly

+    // above and a superfluous return statement here.

+    //

+#pragma diag_suppress=Pe940

+}

+#pragma diag_default=Pe940

+#endif

+#if defined(rvmdk) || defined(__ARMCC_VERSION)

+__asm uint32_t

+CPUcpsie(void)

+{

+    //

+    // Read PRIMASK and enable interrupts.

+    //

+    mrs     r0, PRIMASK;

+    cpsie   i;

+    bx      lr

+}

+#endif

+#if defined(ccs)

+uint32_t

+CPUcpsie(void)

+{

+    //

+    // Read PRIMASK and enable interrupts.

+    //

+    __asm("    mrs     r0, PRIMASK\n"

+          "    cpsie   i\n"

+          "    bx      lr\n");

+

+    //

+    // The following keeps the compiler happy, because it wants to see a

+    // return value from this function.  It will generate code to return

+    // a zero.  However, the real return is the "bx lr" above, so the

+    // return(0) is never executed and the function returns with the value

+    // you expect in R0.

+    //

+    return(0);

+}

+#endif

+

+//*****************************************************************************

+//

+// Wrapper function for the WFI instruction.

+//

+//*****************************************************************************

+#if defined(codered) || defined(gcc) || defined(sourcerygxx)

+void __attribute__((naked))

+CPUwfi(void)

+{

+    //

+    // Wait for the next interrupt.

+    //

+    __asm("    wfi\n"

+          "    bx      lr\n");

+}

+#endif

+#if defined(ewarm)

+void

+CPUwfi(void)

+{

+    //

+    // Wait for the next interrupt.

+    //

+    __asm("    wfi\n");

+}

+#endif

+#if defined(rvmdk) || defined(__ARMCC_VERSION)

+__asm void

+CPUwfi(void)

+{

+    //

+    // Wait for the next interrupt.

+    //

+    wfi;

+    bx      lr

+}

+#endif

+#if defined(ccs)

+void

+CPUwfi(void)

+{

+    //

+    // Wait for the next interrupt.

+    //

+    __asm("    wfi\n");

+}

+#endif

+

+//*****************************************************************************

+//

+// Wrapper function for writing the BASEPRI register.

+//

+//*****************************************************************************

+#if defined(codered) || defined(gcc) || defined(sourcerygxx)

+void __attribute__((naked))

+CPUbasepriSet(uint32_t ui32NewBasepri)

+{

+    //

+    // Set the BASEPRI register

+    //

+    __asm("    msr     BASEPRI, r0\n"

+          "    bx      lr\n");

+}

+#endif

+#if defined(ewarm)

+void

+CPUbasepriSet(uint32_t ui32NewBasepri)

+{

+    //

+    // Set the BASEPRI register

+    //

+    __asm("    msr     BASEPRI, r0\n");

+}

+#endif

+#if defined(rvmdk) || defined(__ARMCC_VERSION)

+__asm void

+CPUbasepriSet(uint32_t ui32NewBasepri)

+{

+    //

+    // Set the BASEPRI register

+    //

+    msr     BASEPRI, r0;

+    bx      lr

+}

+#endif

+#if defined(ccs)

+void

+CPUbasepriSet(uint32_t ui32NewBasepri)

+{

+    //

+    // Set the BASEPRI register

+    //

+    __asm("    msr     BASEPRI, r0\n");

+}

+#endif

+

+//*****************************************************************************

+//

+// Wrapper function for reading the BASEPRI register.

+//

+//*****************************************************************************

+#if defined(codered) || defined(gcc) || defined(sourcerygxx)

+uint32_t __attribute__((naked))

+CPUbasepriGet(void)

+{

+    uint32_t ui32Ret;

+

+    //

+    // Read BASEPRI

+    //

+    __asm("    mrs     r0, BASEPRI\n"

+          "    bx      lr\n"

+          : "=r" (ui32Ret));

+

+    //

+    // The return is handled in the inline assembly, but the compiler will

+    // still complain if there is not an explicit return here (despite the fact

+    // that this does not result in any code being produced because of the

+    // naked attribute).

+    //

+    return(ui32Ret);

+}

+#endif

+#if defined(ewarm)

+uint32_t

+CPUbasepriGet(void)

+{

+    //

+    // Read BASEPRI

+    //

+    __asm("    mrs     r0, BASEPRI\n");

+

+    //

+    // "Warning[Pe940]: missing return statement at end of non-void function"

+    // is suppressed here to avoid putting a "bx lr" in the inline assembly

+    // above and a superfluous return statement here.

+    //

+#pragma diag_suppress=Pe940

+}

+#pragma diag_default=Pe940

+#endif

+#if defined(rvmdk) || defined(__ARMCC_VERSION)

+__asm uint32_t

+CPUbasepriGet(void)

+{

+    //

+    // Read BASEPRI

+    //

+    mrs     r0, BASEPRI;

+    bx      lr

+}

+#endif

+#if defined(ccs)

+uint32_t

+CPUbasepriGet(void)

+{

+    //

+    // Read BASEPRI

+    //

+    __asm("    mrs     r0, BASEPRI\n"

+          "    bx      lr\n");

+

+    //

+    // The following keeps the compiler happy, because it wants to see a

+    // return value from this function.  It will generate code to return

+    // a zero.  However, the real return is the "bx lr" above, so the

+    // return(0) is never executed and the function returns with the value

+    // you expect in R0.

+    //

+    return(0);

+}

+#endif