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Author SHA1 Message Date
David Given d3e3e72860 Update from trunk. 
--HG--
branch : dtrg-videocore
 2013-05-29 15:03:48 +01:00
David Given ae993b1eb2 Add a crude README. 
--HG--
branch : dtrg-videocore
 2013-05-26 19:54:22 +01:00
David Given 38e4726f5c Boot code now works properly in both kernel and bare-metal mode. 
--HG--
branch : dtrg-videocore
 2013-05-26 19:41:37 +01:00
David Given e01f00e320 Allow reading from the mini UART. Add a check to not touch the UART unless it's been initialised (in case of accidents when running in kernel mode). 
--HG--
branch : dtrg-videocore
 2013-05-26 18:58:54 +01:00
David Given bd9497be77 Renamed the pi-specific functions to be a bit cleaner. 
--HG--
branch : dtrg-videocore
rename : plat/rpi/libsys/phys_to_user.s => plat/rpi/libsys/pi_phys_to_user.s
rename : plat/rpi/libsys/uart.s => plat/rpi/libsys/pi_uart.s
rename : plat/rpi/libsys/user_to_phys.s => plat/rpi/libsys/pi_user_to_phys.s
 2013-05-26 00:22:39 +01:00
David Given e299cc3bcf stdio (output only) now works. 
--HG--
branch : dtrg-videocore
 2013-05-25 23:59:31 +01:00
David Given 6a672d5e96 Heap allocations now works. 
--HG--
branch : dtrg-videocore
 2013-05-25 23:28:47 +01:00
David Given ec25fec145 Build binaries that will run bare metal. Add enough syscall library to init the uart and write text. 
--HG--
branch : dtrg-videocore
rename : plat/rpi/libsys/libsys.h => plat/rpi/libsys/libsysasm.h
rename : plat/rpi/libsys/_sys_rawread.s => plat/rpi/libsys/phys_to_user.s
rename : plat/rpi/libsys/_sys_rawread.s => plat/rpi/libsys/uart.s
rename : plat/rpi/libsys/_sys_rawread.s => plat/rpi/libsys/user_to_phys.s
 2013-05-25 00:35:29 +01:00
David Given 8f338f9b44 Now actually runs on real hardware. 
--HG--
branch : dtrg-videocore
 2013-05-22 22:46:10 +01:00
David Given b5e5df4a63 Allocate a user stack to run code in. 
--HG--
branch : dtrg-videocore
 2013-05-22 18:25:30 +01:00
David Given 6b5316dcfa More typo fixes. 
--HG--
branch : dtrg-videocore
 2013-05-22 00:52:58 +01:00
David Given 72542288cd Adjust bootstrap code to build kernels that work with the mailbox test app. 
--HG--
branch : dtrg-videocore
 2013-05-22 00:16:59 +01:00
David Given 5e9102955c Reworked VC4 relocations and some of the instruction encoding to be actually correct. Now generating what could be real code! 
--HG--
branch : dtrg-videocore
 2013-05-21 23:17:30 +01:00
David Given 1312fe298b Now compiles (incorrectly) the entire libc, libpc, libm2 and libbasic! 
--HG--
branch : dtrg-videocore
 2013-05-21 20:05:26 +01:00
David Given 92817a6ad7 Allow platforms to specify size of long double; seperate alignment from size. 
--HG--
branch : dtrg-videocore
 2013-05-21 19:18:11 +01:00
David Given 877e06ed89 Lots more opcodes including float support. Define float and double to be the 
same thing (as the VC4 seems not to have double-precision float support).

--HG--
branch : dtrg-videocore
 2013-05-21 18:16:30 +01:00
David Given 61bff18082 Added skeleton bootstrap code. 
--HG--
branch : dtrg-videocore
rename : plat/pc86/boot.s => plat/rpi/boot.s
 2013-05-19 23:33:29 +01:00
David Given fc1b3672a3 Reapply bugfix to sbrk() which got dropped during the move from linx386/libsys 
to liblinux. Set errno correctly.
 2013-05-18 13:00:37 +01:00
David Given 32ebc502c8 Skeleton of VideoCore IV support for the Raspberry Pi. 
--HG--
branch : dtrg-videocore
rename : mach/powerpc/as/.distr => mach/vc4/as/.distr
rename : mach/powerpc/as/mach0.c => mach/vc4/as/mach0.c
rename : mach/powerpc/as/mach1.c => mach/vc4/as/mach1.c
rename : mach/powerpc/as/mach2.c => mach/vc4/as/mach2.c
rename : mach/powerpc/as/mach3.c => mach/vc4/as/mach3.c
rename : mach/powerpc/as/mach4.c => mach/vc4/as/mach4.c
rename : mach/powerpc/as/mach5.c => mach/vc4/as/mach5.c
rename : mach/i86/build.mk => mach/vc4/build.mk
rename : mach/powerpc/libem/powerpc.h => mach/vc4/libem/videocore.h
rename : mach/i86/libend/.distr => mach/vc4/libend/.distr
rename : mach/i86/libend/edata.s => mach/vc4/libend/edata.s
rename : mach/i86/libend/em_end.s => mach/vc4/libend/em_end.s
rename : mach/i86/libend/end.s => mach/vc4/libend/end.s
rename : mach/i86/libend/etext.s => mach/vc4/libend/etext.s
rename : mach/powerpc/ncg/.distr => mach/vc4/ncg/.distr
rename : mach/powerpc/ncg/mach.c => mach/vc4/ncg/mach.c
rename : mach/powerpc/ncg/mach.h => mach/vc4/ncg/mach.h
rename : mach/powerpc/ncg/table => mach/vc4/ncg/table
rename : plat/pc86/descr => plat/rpi/descr
 2013-05-17 00:03:38 +01:00
David Given 11377070fd Update distribution files. 
--HG--
branch : dtrg-buildsystem
 2013-05-15 23:46:15 +01:00
David Given e9233b4712 Build ego. 
--HG--
branch : dtrg-buildsystem
rename : util/arch/build.mk => util/ego/build.mk
 2013-05-15 21:14:06 +01:00
David Given d5f0107746 Build the Basic run-time library (after some modernisation). 
--HG--
branch : dtrg-buildsystem
 2013-05-14 16:11:29 +01:00
David Given 07453d184a Top, topgen, aelflod. Moved the libraries back into the platform-specific 
directories --- wrangling descr files was too hard. C programs can be built
for cpm, pc86, linux386, linux68k!

--HG--
branch : dtrg-buildsystem
rename : util/ack/build.mk => util/led/build.mk
rename : util/LLgen/build.mk => util/topgen/build.mk
 2013-05-13 23:26:15 +01:00
David Given 442306d557 Split off some of the platform-independent stuff (such as as and ncg). 
--HG--
branch : dtrg-buildsystem
rename : plat/pc86/build.mk => mach/i386/build.mk
rename : plat/pc86/build.mk => mach/i80/build.mk
rename : plat/pc86/build.mk => mach/i86/build.mk
rename : plat/pc86/build.mk => mach/m68020/build.mk
rename : plat/pc86/build.mk => mach/powerpc/build.mk
 2013-05-13 22:12:46 +01:00
David Given 81778b603f Merge updates from trunk. 
--HG--
branch : dtrg-buildsystem
 2013-05-13 12:37:27 +01:00
David Given b0c238eb5d Made a start on building the runtimes for each platform and language; the 
Linuxes all build.

--HG--
branch : dtrg-buildsystem
rename : modules/src/em_mes/build.mk => modules/src/read_em/build.mk
rename : plat/pc86/build.mk => plat/linux386/build.mk
rename : plat/pc86/build.mk => plat/linux68k/build.mk
rename : plat/pc86/build.mk => plat/linuxppc/build.mk
rename : util/ack/build.mk => util/misc/build.mk
 2013-05-12 23:51:55 +01:00
David Given c1aca7dae5 First milestone of replacing the build system. 
--HG--
branch : dtrg-buildsystem
rename : lang/cem/cpp.ansi/Parameters => lang/cem/cpp.ansi/parameters.h
 2013-05-12 20:45:55 +01:00
David Given b9b808e01a Apply George Koehler's aelflod fix for generating non-EM_386 binaries. 
Adjust platforms to use it. Fix some bugs in the linux386 platform.

--HG--
branch : dtrg-experimental-powerpc
 2013-05-09 15:54:23 +01:00
David Given 8d0261473d Add missing linux68k platform and liblinux support library. 
--HG--
branch : dtrg-experimental-powerpc
 2013-05-09 00:56:10 +01:00
David Given c93cb69959 Check in incomplete Linux PowerPC and M68K work. 
--HG--
branch : dtrg-experimental-powerpc
 2013-05-08 00:48:48 +01:00
George Koehler 3dcc3bd1cf Allow pc86 bootloader to boot from more floppy drives. 
When the bootloader probes the drive geometry, the BIOS can clobber the
es register.  If this happens, the bootloader loads the program to the
wrong address, and jumps off the code.  This happens with an emulated
floppy drive in Bochs or QEMU, but not with an emulated hard disk.
 2012-09-23 14:43:22 -04:00
dtrg 7292b538bc Added support for remove() and unlink(). 2010-09-27 20:44:49 +00:00
dtrg 085f346f8c Fixed definitions of O_* flags. 2010-08-20 19:27:09 +00:00
dtrg a0c67da261 Changed to actually work. (On modern Linux systems the old version just 
crashes. On old Linux systems it apparently only worked by accident.)
 2010-08-06 17:06:31 +00:00
dtrg 54ce3f451b Configured distr system for the 6.0pre3 release. 2007-04-29 23:09:24 +00:00
dtrg 78777e802b Now using more conservative optimisation due to random seg fault issues. 2007-04-29 23:02:23 +00:00
dtrg eb4ea1e761 Use better optimisation options. 2007-04-29 21:24:17 +00:00
dtrg 6127ddf024 Fixed the trap code to write out the error message correctly. 2007-04-29 20:47:48 +00:00
dtrg c9d7f7ef23 Added suppot for BSS clearing and command line parsing. 2007-04-29 00:28:06 +00:00
dtrg a7323e1a8b Documented floating-point status. 2007-04-28 22:34:47 +00:00
dtrg be8baf3da6 Added cpm platform. 2007-04-27 22:42:41 +00:00
dtrg 24ea8aee3d Updated for the 6.0pre2 release. 2007-04-24 20:45:58 +00:00
dtrg 740940c9fc Fixed major typos in the signal declarations that was preventing anything that used signal() from compiling. 2007-04-24 19:34:34 +00:00
dtrg b8e1348f2a Ensured that _errno is always defined. Rejigged the pc86 boot code so it doesn't always waste 510 bytes of memory. 2007-04-24 19:25:00 +00:00
dtrg 9b920e59cb Now fetches argc, argv, env correctly from the host OS. 2007-04-23 23:24:03 +00:00
dtrg b500b1a7b7 Added linux386 platform. 2007-04-21 23:02:11 +00:00
dtrg 201c66879d Updated to work with the new libmon-less setup. 2007-04-21 22:59:42 +00:00
dtrg d77b4ce97c Renamed the language libraries and runtimes to have more 
conventional names.
 2007-02-26 22:36:56 +00:00
dtrg b611731ec3 Updated .distr files for the new release. 2007-02-25 12:51:55 +00:00
dtrg c40a44b52e Added some missing CVS headers and did a bit of cleaning up. 2007-02-20 00:31:54 +00:00