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Some legacy drivers use large static allocations for transmit and
receive buffers. To avoid bloating the .bss segment, we currently
implement these as a single common symbol named "_shared_bss" (which
is permissible since only one legacy driver may be active at any one
time).
Switch to dynamic allocation of these .bss-like segments, to avoid the
requirement for using common symbols.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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We currently have contexts in which the local variable "nic" is a
pointer to the global variable also called "nic". This complicates
the creation of macros.
Rename the global variable to "legacy_nic" to reduce pollution of the
global namespace and to allow for the creation of macros referring to
fields within this global variable.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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The legacy NIC drivers do not consistently take a second parameter in
their disable function. We currently use an unsafe function wrapper
that declares no parameters, and rely on the ABI allowing a second
parameter to be silently ignored if not expected by the caller. As of
GCC 15, this hack results in an incompatible pointer type warning.
Fix by removing the hack, and instead updating all relevant legacy NIC
drivers to take an unused second parameter in their disable function.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Signed-off-by: Michael Brown <mcb30@ipxe.org>
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At some point in the past few years, binutils became more aggressive
at removing unused symbols. To function as a symbol requirement, a
relocation record must now be in a section marked with @progbits and
must not be in a section which gets discarded during the link (either
via --gc-sections or via /DISCARD/).
Update REQUIRE_SYMBOL() to generate relocation records meeting these
criteria. To minimise the impact upon the final binary size, we use
existing symbols (specified via the REQUIRING_SYMBOL() macro) as the
relocation targets where possible. We use R_386_NONE or R_X86_64_NONE
relocation types to prevent any actual unwanted relocation taking
place. Where no suitable symbol exists for REQUIRING_SYMBOL() (such
as in config.c), the macro PROVIDE_REQUIRING_SYMBOL() can be used to
generate a one-byte-long symbol to act as the relocation target.
If there are versions of binutils for which this approach fails, then
the fallback will probably involve killing off REQUEST_SYMBOL(),
redefining REQUIRE_SYMBOL() to use the current definition of
REQUEST_SYMBOL(), and postprocessing the linked ELF file with
something along the lines of "nm -u | wc -l" to check that there are
no undefined symbols remaining.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Add the standard warranty disclaimer and Free Software Foundation
address paragraphs to the licence text where these are not currently
present.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Access to the gpxe.org and etherboot.org domains and associated
resources has been revoked by the registrant of the domain. Work
around this problem by renaming project from gPXE to iPXE, and
updating URLs to match.
Also update README, LOG and COPYRIGHTS to remove obsolete information.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Add FILE_LICENCE declarations to almost all files that make up the
various standard builds of gPXE.
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ISA 3c509 is currently non-functional, although the EISA (3c509-eisa) and
MCA (3c529) variants should build OK.
None of this code is yet tested.
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not-yet-updated drivers to at least function.
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initial device, and will also allow for e.g. a device menu to be presented
to the user.
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can fill them in.
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