Motorola DSP56800 Uživatelská příručka stáhnout pdf (Strana 388)

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Pragmas for the DSP56800 and DSP56800E

Pragma Reference

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Targeting MC56F83xx/DSP5685x Controllers

This pragma does not correspond to any setting in the C/C++ Language panel. To

check the global optimizer, use __option (gcc_extensions), described in

Checking Settings

. By default, this pragma is disabled.

initializedzerodata

Controls the section where zero-initialized global variables are emitted.

Prototype

#pragma initializedzerodata on | off | reset

Remarks

If you enable this pragma, zero-initilaized global variables are emitted to the .data

section (which is normally stored in ROM) instead of the .BSS section. This results in

a larger ROM image. This pragma should be enabled if customized startup code is

used and it does not initialize the .BSS section. The .BSS section is initialized to zero

by the default CodeWarrior startup code.

This pragma does not correspond to any setting in the C/C++ Language

panel. To

check this setting, use __option(initializedzerodata), described in

Checking Settings

. By default, this pragma is disabled.

NOTE

The pragmas initializedzerodata and

explicit_zero_data are the same, however, the preferred

syntax is explicit_zero_data.

inline_bottom_up

Controls the bottom-up function inlining method.

Prototype

#pragma inline_bottom_up on | off | reset

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