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| en:multiasm:cs:chapter_3_10 [2026/03/01 14:11] – [Data addressing] ktokarz | en:multiasm:cs:chapter_3_10 [2026/03/01 14:14] (current) – [Program control flow destination addressing] ktokarz | ||
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| The operand of jump, branch, or function call instructions addresses the destination of the program flow control. The result of these instructions is the change of the Instruction Pointer content. Jump instructions should be avoided in high-level structural or object-oriented languages, but they are common in assembler programming. Our examples will use the hypothetic //jump// instruction with a single operand—the destination address. | The operand of jump, branch, or function call instructions addresses the destination of the program flow control. The result of these instructions is the change of the Instruction Pointer content. Jump instructions should be avoided in high-level structural or object-oriented languages, but they are common in assembler programming. Our examples will use the hypothetic //jump// instruction with a single operand—the destination address. | ||
| - | **Direct addressing** of the destination is similar to direct data addressing. It specifies the destination address as the constant value, usually represented by a name. In assembler, we define the names of the addresses in code as //labels//. In the following example, the code will jump to the label named //destin//: | + | **Direct addressing** of the destination is similar to direct data addressing. It specifies the destination address as the constant value, usually represented by a name. In assembler, we define the names of the addresses in code as //labels//. In the following example, |
| < | < | ||
| jump destin | jump destin | ||
| Line 88: | Line 88: | ||
| </ | </ | ||
| - | **Indirect addressing** of the destination uses the content of the register as the address where the program will jump. In the following example, the processor will jump to the destination address, which is stored in //R0//: | + | **Indirect addressing** of the destination, as shown in Fig {{ref> |
| < | < | ||
| jump [R0] | jump [R0] | ||
