4.2.7
Section Address Operators
Table 3.26 lists the section address operators.
Table 4.25 | Section Address Operators |
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1
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__sectop("<section name>")
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Refers to the start address of <section name>.
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2
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__secend("<section name>")
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Refers to the sum of the size of <section name> and the address where <section name> starts.
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3
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__secsize("<section name>")
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Refers to the size of <section name>.
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[Return value type]
The return value type of __sectop is void *.
The return value type of __secend is void *.
The return value type of __secsize is unsigned long.
[Example]
(1) __sectop, __secend
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#include <machine.h>
#pragma section $DSEC
static const struct {
void *rom_s; /* Start address of the initialized data section in ROM */
void *rom_e; /* End address of the initialized data section in ROM */
void *ram_s; /* Start address of the initialized data section in RAM */
} DTBL[]={__sectop("D"), __secend("D"), __sectop("R")};
#pragma section $BSEC
static const struct {
void *b_s; /* Start address of the uninitialized data section */
void *b_e; /* End address of the uninitialized data section */
} BTBL[]={__sectop("B"), __secend("B")};
#pragma section
#pragma stacksize si=0x100
#pragma entry INIT
void main(void);
void INIT(void)
{
_INITSCT();
main();
sleep();
}
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(2) __secsize
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/* size of section B */
unsigned int size_of_B = __secsize("B");
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[Remarks]
In an application that enables the PIC/PID function, __sectop and __secend is processed as the addresses determined at linkage.
For details of the PIC/PID function, refer to the descriptions of the pic and pid options in Usage of PIC/PID Function.