AVR C Runtime Library - Bugs: bug #23546, FAQ documentation symbol seems...
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bug #23546: FAQ documentation symbol seems wrong
Submitter: | Thijs de Ridder <thijs> | ||
Submitted: | Thu 12 Jun 2008 08:58:15 AM UTC | ||
Category: | Documentation | Severity: | 3 - Normal |
Priority: | 5 - Normal | Item Group: | Documentation |
Status: | Fixed | Assigned to: | arcanum |
Percent Complete: | 100% | Open/Closed: | Closed |
Release: | 1.4.6 | Fixed Release: | 1.7.0 |
No files currently attached
Depends on the following items: None found
Items that depend on this one: None found
Carbon-Copy List
Follow 5 latest changes.
Date | Changed by | Updated Field | Previous Value | => | Replaced by |
---|---|---|---|---|---|
2008-08-06 | arcanum | Percent Complete | 0% | 100% | |
Assigned to | None | arcanum | |||
Open/Closed | Open | Closed | |||
Fixed Release | None | 1.7.0 | |||
2008-08-06 | arcanum | Status | None | Fixed |
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Corresponding source code
In the FAQ of Avr-libc at the entry: "How to add a raw binary image to linker output?" is an example of how to add binary. The documentation tells there are two symbols generated:
"This will create a file named foo.o, with the contents of foo.bin. The contents will default to section .data, and two symbols will be created named binary_foo_bin_start and binary_foo_bin_end. These symbols can be referred to inside a C source to access these data."
I used used this functionality and tried to use the symbols. The linker gave a warning it couldn't find the symbols. When looking at the .o file it seems the symbol names are:
_binary_foo_bin_start
_binary_foo_bin_end
Note the missing underscore at the end. I'm not really an avr-objcopy expert, to say at least, but it seems to me the documentation in the FAQ is not correct.
I'm using WinAVR 20070525 and avr-objcopy version: 'GNU objcopy 2.17 + coff-avr-patch (20050630)'