Samsung YP-P10 User Manual download pdf (Page 92)

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101

ARM INSTRUCTION SET S3C2440A RISC MICROPROCESSOR

3-8

ASSEMBLER SYNTAX

Items in “{}” are optional. Items in “<>” must be present.

B{L}{cond} <expression>

{L}

Used to request the Branch with Link form of the instruction.

If absent, R14 will not be affected by the instruction.

{cond}

A two-character mnemonic as shown in Table 3-2.

If absent then AL (ALways) will be used.

The destination. The assembler calculates the offset

Examples

here BAL here ; Assembles to 0xEAFFFFFE (note effect of PC offset).

B there ; Always condition used as default.

CMP R1,#0 ; Compare R1 with zero and branch to fred

if R1 was zero, otherwise continue.

BEQ fred ; Continue to next instruction.

BL sub+ROM ; Call subroutine at computed address.

ADDS R1,#1 ; Add 1 to register 1, setting CPSR flags

on the result then call subroutine if

BLCC sub ; the C flag is clear, which will be the

case unless R1 held 0xFFFFFFFF.

1 2 ... 87 88 89 90 91 92 93 94 95 96 97 ... 595 596

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Samsung YP-P10 User Manual Page 92

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