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Welcome to Syslinux 5.10.
Conflicts:
NEWS
com32/lib/Makefile
com32/lib/sys/open.c
com32/lib/syslinux/ipappend.c
com32/modules/Makefile
com32/modules/prdhcp.c
core/Makefile
core/cmdline.inc
core/com32.inc
core/comboot.inc
core/configinit.inc
core/fs/chdir.c
core/fs/fs.c
core/fs/pxe/dnsresolv.c
core/fs/pxe/pxe.c
core/fs/pxe/pxe.h
core/idle.c
core/include/ctype.h
core/init.inc
core/mem/init.c
core/parseconfig.inc
core/runkernel.inc
core/syslinux.ld
core/ui.inc
doc/comboot.txt
version
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When this code was originally written, we didn't have lmalloc(). Now
when lmalloc() is implemented, let each real-mode task have its own
stack.
Note that this means we absolutely have to continue to support the
SS != CS, DS model in the real-mode code, which should already be the
case, but...
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
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Add a hook so we can invoke a protmode function immediately before
enabling interrupts on the way back from protected mode. This will
*not* be invoked if we are more than one level deep (i.e.
[RM(0) ->] PM(0) -> RM(1) -> PM(1) -> RM(2) will not invoke the hook
when returning to PM(1).) This is intended to provide a hook for
taking an action after a real-mode interrupt did something, i.e. the
PXE receive ISR or the timer tick.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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There is an awful lot of code currently implemented in assembly when
it could just as easily be implemented in C. Having it in C makes it
much easier to share code between the BIOS and forthcoming EFI
firmware backend. The following code fragments have been rewritten,
- timer initialisation
- adjust_screen()
- check_esapes() and mem_init()
- conio.inc
- plaincon.inc
- cleanup.inc
- serirq.inc
- font.inc
- graphics
- writehex
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
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Move the generated IDT stubs to a separate section, .gentext16, so
that they aren't immediately adjacent to a piece of highly mutable
data.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Fix a couple of minor issues caused by mismerge with the master
branch.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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The real-mode callbacks are not specific to the comboot API, nor are
they com32-specific anymore. Move them to a separate file, and let
com32.inc be only the items related to comboot files proper.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Move all 32-bit code out of the .text16 segment. The code that is
used during the relocation of the .text segment (i.e. anywhere on the
bcopy path) is moved to .textnr (other than the code already in
.bcopyxx) for "no relocate", the rest of the code to .text.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Add a pm_call convenience macro, instead of using stub routines
everywhere. Stubs would still make sense if we have a routine which
gets invoked from a lot of places, though, since the pm_call expands
to 9 bytes as opposed to 3 bytes per call site plus a 10-byte stub.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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A very preliminary implementation of 32-bit C code in the core. This
currently breaks ADV, because the installer assumes the ADV is the
last two sectors in extlinux.sys -- need to figure out a way to deal
with this hopefully without breaking the migration protocol.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Rename the .text, .data and .bss sections to .text16, .data16 and
.bss16, in anticipation of being linked with compiler-generated 32-bit
code, which presumably would like to use the standard section names.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Simplify the pm_call usage:
- pm_call now saves and restores all registers
callees that want to return values in registers can mess with
the frame on the stack
- the PM function now enters with EAX = EBP = RM stack
(EAX for the use of C code, EBP for assembly)
- the RM stack frame matches com32sys_t
- pmcall.inc defined macros for the stack frame based on EBP
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Cut the time until we have a valid RM stack as much as possible.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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When executing pm_call, only enable interrupts in PM if we were called
with interrupts enabled in RM.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Another attempt at unify protected mode entry/exit, based on the
previous bcopyint branch. This should, among other things, give a
"full service" PM environment including BIOS upcalls and interrupt
service to the core-internal code.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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