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 View Shared Object
Name:libgcc
Title:The GCC low-level runtime library
Category:misc
Description:This Shared Object is part of the OS4 package. It was introduced with the July 2007 Update for A1 users. Jörg Strohmayer however is providing a new GCC 4.2.3 version of libgcc.so in his OWB.lha archive.

General description:

This Shared Object is part of the OS4 package. It was introduced with the July 2007 Update for A1 users.

GCC provides a low-level runtime library, libgcc.a or libgcc_s.so.1 on some platforms. GCC generates calls to routines in this library automatically, whenever it needs to perform some operation that is too complicated to emit inline code for.

Most of the routines in libgcc handle arithmetic operations that the target processor cannot perform directly. This includes integer multiply and divide on some machines, and all floating-point and fixed-point operations on other machines. libgcc also includes routines for exception handling, and a handful of miscellaneous operations.

Some of these routines can be defined in mostly machine-independent C. Others must be hand-written in assembly language for each processor that needs them.

GCC will also generate calls to C library routines, such as memcpy and memset, in some cases. The set of routines that GCC may possibly use is documented in Other Builtins.

These routines take arguments and return values of a specific machine mode, not a specific C type. See Machine Modes, for an explanation of this concept. For illustrative purposes, in this chapter the floating point type float is assumed to correspond to SFmode; double to DFmode; and long double to both TFmode and XFmode. Similarly, the integer types int and unsigned int correspond to SImode; long and unsigned long to DImode; and long long and unsigned long long to TImode.
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Created:20080229 14:46 by orginUpdated:20080914 10:12

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