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Author SHA1 Message Date
David Given 80cb6ba927 Eliminate the RELOH2 relocation, as it never worked --- the address would be 
calculated incorrectly because of overflow errors.

Replace it with an extended RELOPPC relocation which understands addis/ori
pairs; add an la pseudoop to the assembler which generates these and the
appropriate relocation. Make good.

--HG--
branch : dtrg-experimental-powerpc-branch
 2016-09-17 12:43:15 +02:00
David Given 45a950571d Mostly add support for the experimental and largely broken linuxppc platform. 
(Doesn't quite build.)

--HG--
branch : dtrg-experimental-powerpc-branch
 2016-09-15 23:12:03 +02:00
David Given 8c94b1316c Add unlink system call. 2016-09-04 19:23:02 +02:00
David Given f67c98e239 Distributions are a pain --- let's not bother any more. Instead, we just tag 
the repository and download a complete snapshot, old and ancient stuff and all.
 2016-09-02 23:00:38 +02:00
David Given 612e38f1c6 Remove the old make-based build system, plus some big chunks of horribly 
obsolete protomake build system.
 2016-09-02 22:17:51 +02:00
David Given 5bae29a00c ego now builds and is used. 
This needed lots of refactoring to ego --- not all platforms have ego descr
files, and ego will just crash if you invoke it without one. I think originally
it was never intended that these platforms would be used at -O2 or above.

Plats now only specify the ego descr file if they have one.
 2016-08-21 22:01:19 +02:00
David Given 1a7b4f8729 Build the examples when doing a normal build; this exercises the compiler as a 
whole and is one step further towards a proper test suite.
 2016-08-20 14:05:24 +02:00
David Given edee22510b liblinux is no more; its files are now in libsys. 2016-08-20 14:03:49 +02:00
David Given 52eaf753b6 rpi has a time() function; don't try to call gettimeofday(). 2016-08-20 14:03:19 +02:00
David Given 204f932ed2 Raspberry Pi backend now builds. 2016-08-20 12:40:13 +02:00
David Given 420c47c386 Fix dependency error (only shows up with make, not ninja. Odd). 2016-08-15 00:46:43 +02:00
David Given 38fa6941d5 linux68k builds now. 2016-08-14 11:34:18 +02:00
David Given 3df4906d52 Turns out I wasn't building the syscall libraries. Do so. 2016-08-14 11:23:57 +02:00
David Given b549980af2 Wasn't exporting the plat headers; refactor to make this a little cleaner. 2016-08-14 11:01:36 +02:00
David Given f253b6a169 linux386 builds. Also, forgot to turn back on the language runtimes. 2016-08-14 10:37:55 +02:00
David Given 262c5fedcf Biggish refactor to break cycles; my build rules were full of them. cpm builds, 
which requires top and topgen.
 2016-08-14 01:39:40 +02:00
David Given e0b8bd221d Pascal runtime library now builds. 2016-08-13 13:07:19 +02:00
David Given e770d09dc8 Pascal compiler builds. 2016-08-13 13:03:06 +02:00
David Given 00c67fcc0e Modula-2 runtime library now builds. 2016-08-13 12:43:44 +02:00
David Given 08b7c4aaae The Basic runtime builds now. 2016-08-12 00:24:40 +02:00
David Given 7c60c27302 The Basic compiler works now. 2016-08-12 00:19:51 +02:00
David Given 3ce4e53aa9 Most of libc builds now (missing malloc). 2016-08-08 23:55:47 +02:00
David Given 0d77cb8279 We can build our first C file. 2016-08-07 21:56:53 +02:00
David Given 5e84be70fd Massive ackbuilder refactor --- cleaner and more expressive. Lists 
are automatically flattened (leading to better build files), and the
list and filename functions are vastly more orthogonal.
 2016-08-04 23:51:19 +02:00
David Given b2bb4ce3b2 Builds libend (the simplest library). Becoming obvious I need to rework the way 
ackbuilder deals with lists.
 2016-07-30 00:39:22 +02:00
David Given 363d13cc2f C preprocessor; tabgen; now the pc86 boot.s builds using the ack 
toolchain.
 2016-07-29 00:22:49 +02:00
David Given a8a9d1bbfa yacc, ncgg; platform ncg builds now. 2016-07-26 23:35:30 +02:00
David Given bff5c4019c Baby steps towards building a platform --- make the assembler work. 
Add ackbuilder support for C preprocessor files and yacc.
 2016-07-24 00:50:02 +02:00
David Given 88bd7ce126 Remove defunct pmfiles. 
--HG--
branch : default-branch
 2016-06-03 13:56:50 +02:00
David Given 4b3c1a2d07 Add missing (but probably non-working) rpi file. 
--HG--
branch : default-branch
 2016-06-02 12:21:13 +02:00
David Given ff0c78cc78 Merge from default. 
--HG--
branch : dtrg-videocore-branch-branch
 2016-03-13 21:13:09 +01:00
David Given 9f23fbbe6a Allow machines to use cg if they wish. 
--HG--
rename : mach/proto/ncg/build.mk => mach/proto/cg/build.mk
rename : util/ncgg/build.mk => util/cgg/build.mk
 2015-03-23 00:08:51 +01:00
David Given c72eaef8ee Add routine to set the Raspberry Pi clock to 250MHz (loads faster than the default 19.2MHz). 
--HG--
branch : dtrg-videocore
rename : plat/rpi/libsys/pi_user_to_phys.s => plat/rpi/libsys/pi_fast_mode.s
 2013-06-24 23:57:27 +01:00
David Given d94c1c8150 Updated distr files. 
--HG--
branch : dtrg-videocore
rename : mach/i80/.distr => mach/vc4/.distr
rename : plat/cpm/.distr => plat/rpi/.distr
 2013-06-21 23:38:21 +01:00
David Given 2be811bac2 Updated VC4 docs. 
--HG--
branch : dtrg-videocore
 2013-06-21 23:21:08 +01:00
David Given 052dd9bfc0 Actually remember to set the stack pointer on startup. Reduce to stack from 16kB to a much more reasonable 1kB. 
--HG--
branch : dtrg-videocore
 2013-06-20 00:14:55 +01:00
David Given eaf4339cd6 Implement a very crude busy-wait based select() mechanism for consol input. 
--HG--
branch : dtrg-videocore
rename : plat/rpi/include/ack/config.h => plat/rpi/include/sys/select.h
rename : plat/rpi/libsys/time.c => plat/rpi/libsys/select.c
 2013-06-09 22:16:30 +01:00
David Given ed6c4a85d1 Change the size of the SRAM area to 128kB (to reflect reality). 
--HG--
branch : dtrg-videocore
 2013-06-06 00:05:48 +01:00
David Given aacabba165 Apply fix contributed by George Koehler: 
- don't crash if BSS overlaps BDOS
- fix stack initialisation bug
- fix command line argification
 2013-06-02 22:02:15 +01:00
David Given d5a112dbfd Some more termios compatibility options. 
--HG--
branch : dtrg-videocore
 2013-05-30 23:25:22 +01:00
David Given 2054618e75 Add basic termios to the rpi platform to allow echoing/newline translation to be controlled. 
--HG--
branch : dtrg-videocore
rename : plat/rpi/include/unistd.h => plat/rpi/include/termios.h
rename : plat/rpi/libsys/write.c => plat/rpi/libsys/tcgetattr.c
rename : plat/rpi/libsys/write.c => plat/rpi/libsys/tcsetattr.c
 2013-05-30 23:19:55 +01:00
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