SPRUIG5F January   2018  – November 2026 TDA4VM , TDA4VM-Q1

 

  1.   1
  2.   Abstract
  3. 1About This Document
    1. 1.1 Related Documents
    2. 1.2 Trademarks
  4. 2Migrating C Source from C6000 to C7000
    1. 2.1  Compiler Options
    2. 2.2  Native Vector Data Types
    3. 2.3  Type Qualifiers: near and far
    4. 2.4  64-bit long Type
    5. 2.5  References to Control Registers
    6. 2.6  Memory-Mapped Peripherals
    7. 2.7  Run-Time Support
    8. 2.8  Contents of Migration Header File c6x_migration.h
      1. 2.8.1 Supported Macros
      2. 2.8.2 Non-Supported Macros
      3. 2.8.3 Legacy Data Types
      4. 2.8.4 Legacy Intrinsics
    9. 2.9  Galois Field Multiply Instructions
    10. 2.10 Performance Considerations for Migrated Code
      1. 2.10.1 UNROLL Pragma
      2. 2.10.2 Subvector Access
      3. 2.10.3 16x16 and 16x32 Bit Multiplies
      4. 2.10.4 __x128_t Type
      5. 2.10.5 Unsigned Array Offsets
      6. 2.10.6 Streaming Engine and Streaming Address Generator
      7. 2.10.7 Additional Optimization Guidance
  5. 3Host Emulation
  6. 4Revision History
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    2.     31
    3.     32

2.9 Galois Field Multiply Instructions

The interface to Galois Field Multiply Instructions is different on C7000. Therefore, code containing these instructions and intrinsics will need to be adjusted manually:

  • GMPY / _gmpy()
  • GMPY4 / _gmpy4()
  • XORMPY / _xormpy()