Zilog ZUSBOPTS - Manual (Page 219)

UM017105-0511 Linker Command Files for C Programs
Zilog Developer Studio II – ZNEO™
User Manual
191
Linker Symbols
The default linker command file defines some system symbols, which are used by the C
startup file to initialize the stack pointer, clear the uninitialized variables to zero, set the
initialized variables to their initial value, set the heap base, and so on. Table 17 shows the
list of symbols that might be defined in the linker command file, depending on the compi-
lation memory model selected by the user.
Crtld.lib C run-time library for large model, with debug information
Fpl.lib Floating-point library for large model, no debug information
Fpld.lib Floating-point library for large model, with debug information
Crts.lib C run-time library for small model, no debug information
Crtsd.lib C run-time library for small model, with debug information
Fps.lib Floating-point library for small model, no debug information
Fpsd.lib Floating -point library for small model, with debug information
Chelps.lib C helper routines for small model, no debug information
Chelpsd.lib C helper routines for small model, with debug information
Chelpl.lib C helper routines for large model, no debug information
Chelpld.lib C helper routines for large model, with debug information
Table 17. Linker Symbols
Symbol Description
_low_neardata Base of near_data segment after linking.
_len_neardata Length of near_data segment after linking.
_low_near_romdata Base of the rom copy of near_data segment after linking.
_low_fardata Base of far_data segment after linking.
_len_fardata Length of far_data segment after linking.
_low_far_romdata Base of the rom copy of far_data segment after linking.
_low_nearbss Base of near_bss segment after linking.
_len_nearbss Length of near_bss segment after linking.
_low_farbss Base of far_bss segment after linking.
_len_farbss Length of far_bss segment after linking.
Table 16. Linker Referenced Files (Continued)
File Description