The header file <inmsp.h> defines a number of intrinsic functions of general use for the MSP430 processor. This file is written to be compatible, and in some cases an enhancement of, the <in430.h> file in version 3 of IAR's Embedded Workbench for MSP430 (EW430) product.
| Status register manipulation | |
| __bic_SR_register | Clear bits in status register |
| __bic_SR_register_on_exit | Clear bits in stacked status register |
| __bis_SR_register | Set bits in status register |
| __bis_SR_register_on_exit | Set bits in stacked status register |
| __disable_interrupt | Disable global interrupts |
| __enable_interrupt | Enable global interrupts |
| Byte order manipulation | |
| __swap_long_bytes | Swap order of bytes in a long |
| __swap_words | Swap order of words in a long |
| __swap_bytes | Swap order of bytes in a word |
| __swap_nibbles | Swap order of nibbles in a byte |
| Bit order manipulation | |
| __bit_reverse_char | Reverse the order of bits in a char |
| __bit_reverse_short | Reverse the order of bits in a short |
| __bit_reverse_long | Reverse the order of bits in a long |
| __bit_reverse_long_long | Reverse the order of bits in a long long |
| Bit counting | |
| __bit_count_leading_zeros_char | Count the number of leading zero bits in a char |
| __bit_count_leading_zeros_short | Count the number of leading zero bits in a short |
| __bit_count_leading_zeros_long | Count the number of leading zero bits in a long |
| __bit_count_leading_zeros_long_long | Count the number of leading zero bits in a long long |
| Register manipulation | |
| __get_register | Read the value of a CPU register |
| __set_register | Write a CPU register with a given value |
| Binary coded decimal arithmetic | |
| __bcd_add_short | Add two 16-bit values using decimal arithmetic |
| __bcd_add_long | Add two 32-bit values using decimal arithmetic |
| __bcd_add_long_long | Add two 64-bit values using decimal arithmetic |
| __bcd_negate_short | Negate a 16-bit value using decimal arithmetic |
| __bcd_negate_long | Negate a 32-bit value using decimal arithmetic |
| __bcd_negate_long_long | Negate a 64-bit value using decimal arithmetic |
| __bcd_subtract_short | Subtract two 16-bit values using decimal arithmetic |
| __bcd_subtract_long | Subtract two 32-bit values using decimal arithmetic |
| __bcd_subtract_long_long | Subtract two 64-bit values using decimal arithmetic |
| Miscellaneous functions | |
| __no_operation | Insert a NOP instruction |
| __insert_opcode | Insert an instruction |
| __delay_cycles | Delay execution for a number of cycles |