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path: root/src/devices/oprom/x86emu
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2012-11-30Rename devices -> deviceStefan Reinauer
to match src/include/device Change-Id: I5d0e5b4361c34881a3b81347aac48738cb5b9af0 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/1960 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2012-08-02x86emu: fix jump_near_IMM to handle DATA: flag correctlyStefan Reinauer
Before (data flag ignored -> broken): 66 DATA: e944f1 JMP 1ff6 After (fixed): 66 DATA: e944f1ffff JMP 00001ff8 This subtle difference in the length of decoded instruction meant that the VBE call jumped to the routine setting AX=0x14F (VBE Failed) instead of the routine that set AX=0x4F (VBE success). The ability to run the same code in vm86 significantly aided the debugging of this issue. Those X.org developers who would like to drop vm86 better take special care towards _all_ vesa bugs, as those will expose further issues. Imported from: http://cgit.freedesktop.org/xorg/xserver/commit/hw/xfree86/x86emu?id=cc2c73ddcb4370a7c3ad439cda4da825156c26c9 Signed-off-by: Stefan Reinauer <reinauer@google.com> Change-Id: Id08ead9b17468cf19ede45508e5dcc50e45b5acf Signed-off-by: Luc Verhaegen <libv@skynet.be> Tested-by: Luc Verhaegen <libv@skynet.be> Reviewed-by: Adam Jackson <ajax@redhat.com> Signed-off-by: Keith Packard <keithp@keithp.com> Reviewed-on: http://review.coreboot.org/1365 Tested-by: build bot (Jenkins) Reviewed-by: Anton Kochkov <anton.kochkov@gmail.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2012-08-02x86emu: Fix more mis-decoding of the data prefixStefan Reinauer
cc2c73ddcb4370a7c3ad439cda4da825156c26c9's three-cent titanium tax doesn't go too far enough. Fix the rest of the call and jmp instructions to handle the data prefix correctly. Reference: Intel 64 and IA-32 Architectures Software Developer's Manual Volume 2A: Instruction Set Reference, A-M http://www.intel.com/Assets/PDF/manual/253666.pdf Imported from: http://cgit.freedesktop.org/xorg/xserver/commit/hw/xfree86/x86emu?id=bb18f277156c08be028a6e12d8987fb1593e9168 Signed-off-by: Stefan Reinauer <reinauer@google.com> Change-Id: I83e6245d9748ee86722cfb7d8ac65258c35c013c Reviewed-by: Julien Cristau <jcristau@debian.org> Signed-off-by: Adam Jackson <ajax@redhat.com> Reviewed-on: http://review.coreboot.org/1366 Tested-by: build bot (Jenkins) Reviewed-by: Anton Kochkov <anton.kochkov@gmail.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2012-08-02x86emu: Respect the LEA 67h address size prefixStefan Reinauer
From http://cgit.freedesktop.org/xorg/xserver/commit/hw/xfree86/x86emu?id=f57bc0ede8e018c7e264b917927c42a018cd1d5a Change-Id: Ibdcaa27e936464cec512edb46447aa6284a34975 Signed-off-by: Stefan Reinauer <reinauer@google.com> Signed-off-by: Christian Zander <chzander@nvidia.com> Signed-off-by: Aaron Plattner <aplattner@nvidia.com> Tested-by: Tiago Vignatti <tiago.vignatti@nokia.com> Signed-off-by: Keith Packard <keithp@keithp.com> Reviewed-on: http://review.coreboot.org/1364 Tested-by: build bot (Jenkins) Reviewed-by: Anton Kochkov <anton.kochkov@gmail.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2012-07-27x86emu: Fix BSF and BSR instructionsStefan Reinauer
Patch courtesy of Michael Yaroslavtsev. Synced from Xorg http://cgit.freedesktop.org/xorg/xserver/commit/?id=66fa87292ef26bd0f464481287f3af992cd5741c Change-Id: I266f910d4a535eab4e2ad77f2540f2f1495bed61 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/1360 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-07-27x86emu: fix comment for BTS instructionStefan Reinauer
Change-Id: Iacce58945f66213e75c7aac89541e785e80664cb Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/1363 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2012-07-27x86emu: Add an RDTSC implementation to the x86 emulatorStefan Reinauer
This instruction is being used in some debug VBIOSes. This implementation doesn't even try to be accurate. Instead, it just increments the counter by a fixed amount every time an rdtsc instruction in encountered, to avoid divides by zero. Imported from: http://cgit.freedesktop.org/xorg/xserver/commit/?id=c4b7e9d1c16797c3e4b1200b40aceab5696a7fb8 Change-Id: I8fba1a060c57ccb7bbd44aa321dd349bc56bf574 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/1362 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2012-07-27x86emu: Use NULL instead of 0 when assigning pointerStefan Reinauer
Change-Id: Ie79b9aa79d45dd10c2e5be7f58eed970c243060a Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/1361 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2011-10-13Fix compilation of x86emu with gcc 4.6.xStefan Reinauer
gcc 4.6 complains about unused but set variables in x86emu. Particularly some variables are always set but only used in debug mode, or when FPU support is enabled. Change-Id: Ic53bd2303171ab717eb2d2c0ed72744d3eb6989e Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/258 Tested-by: build bot (Jenkins) Reviewed-by: Marc Jones <marcj303@gmail.com>
2010-09-30Rename build system variables to be more intuitive, andPatrick Georgi
at the same time let the user specify sources instead of object files: - objs becomes ramstage-srcs - initobjs becomes romstage-srcs - driver becomes driver-srcs - smmobj becomes smm-srcs The user servicable parts are named accordingly: ramstage-y, romstage-y, driver-y, smm-y Also, the object file names are properly renamed now, using .ramstage.o, .romstage.o, .driver.o, .smm.o suffixes consistently. Remove stubbed out via/epia-m700 dsdt/ssdt files - they didn't easily fit in the build system and aren't useful anyway. Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de> Acked-by: Stefan Reinauer <stepan@coreystems.de> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5886 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
2010-08-23mark unused variables in x86emu as unused. gcc has a mechanism for this.Stefan Reinauer
Signed-off-by: Stefan Reinauer <stepan@coresystems.de> Acked-by: Stefan Reinauer <stepan@coresystems.de> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5738 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
2010-04-27Since some people disapprove of white space cleanups mixed in regular commitsStefan Reinauer
while others dislike them being extra commits, let's clean them up once and for all for the existing code. If it's ugly, let it only be ugly once :-) Signed-off-by: Stefan Reinauer <stepan@coresystems.de> Acked-by: Stefan Reinauer <stepan@coresystems.de> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5507 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
2010-03-23Prepare for using coreboot x86emu in userspace utility "vgabios"Stefan Reinauer
Signed-off-by: Stefan Reinauer <stepan@coresystems.de> Acked-by: Joseph Smith <joe@settoplinux.org> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5275 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
2010-03-16it was reason for workaround rules already, and it's somewhat ugly:Stefan Reinauer
util/x86emu is the only part of coreboot that is linked into coreboot itself that lives in util/. It's not a utility and it does not really belong where it lives. ---> svn mv util/x86emu src/devices/oprom plus necessary Makefile changes to get it building again Signed-off-by: Stefan Reinauer <stepan@coresystems.de> Acked-by: Ronald G. Minnich <rminnich@gmail.com> Acked-by: Peter Stuge <peter@stuge.se> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5228 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
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