4 ARM Instruction Set - GitHub Pages

4 ARM Instruction Set This chapter describes the ARM Instruction set. Instruction Set Summary 4-2. The Condition Field 4-5. Branch and Exchange (BX) 4-6. Branch and Branch with Link (B, BL) 4-8. Data Processing 4-10. PSR Transfer (MRS, MSR) 4-17. Multiply and Multiply-Accumulate (MUL, MLA) 4-22. Multiply Long and Multiply-Accumulate Long (MULL,MLAL) 4-24. Single Data Transfer (LDR, STR) 4-26. Halfword and Signed Data Transfer 4-32. Block Data Transfer (LDM, STM) 4-37. Single Data Swap (SWP) 4-43. Software Interrupt (SWI) 4-45. Coprocessor Data Operations (CDP) 4-47. Coprocessor Data Transfers (LDC, STC) 4-49. Coprocessor Register Transfers (MRC, MCR) 4-53.

ARM Instruction Set 4-6 ARM7TDMI-S Data Sheet ARM DDI 0084D 4.3 Branch and Exchange (BX) This instruction is only executed if the condition is true. The various conditions are defined in Table 4-2: Condition code summary on page 4-5. This instruction performs a branch by copying the contents of a general register, Rn, into the program counter, PC.

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