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Interpretation when omitted

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This option defines execution start address with external defined symbol symbol or address address.

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Specify address in hexadecimal.
If the specified value starts with a character from A to F, defined symbols are searched first, and if corresponding symbol is not found, the value is interpreted as an address.
Values starting with 0 are always interpreted as addresses.

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If the specified symbol name is a C variable name, add "_" at the head of the definition name in the program.

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To specify main function in C as the execution start address, describe as:

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To specify 0x100 as the execution start address, describe as:

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If the -form={object|relocate|library} option or -strip option is specified, this option will be invalid.

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Be sure to specify symbol if you intend to enable link-time optimization (-optimize[=symbol_delete]). If address is specified with this option, link-time optimization will be disabled.

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If the address specified by the -entry option is included in any of the sections allocated by the -start option, optimization in the range from the first address of the section up to the address specified by the -entry option will be suppressed.