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Author SHA1 Message Date
Michael Brown
10606e95b3 Added tunctl (since it is difficult to find for many distros). 2006-05-13 09:27:54 +00:00
Michael Brown
fdb983d473 Preserve the whole of %esp across prot_call(). We have to split this 
between the low half stored in the static variable rm_sp, and the high
half stored on the prot_call() stack, because:

  Just using the stack would screw up when a prot_call()ed routine
  executes a real_call(); it would have no way to find the current top of
  the RM stack.

  Extending rm_sp to rm_esp would not be safe, because the guarantee that
  rm_sp must return to the correct value by the time an external
  real-mode call returns applies only to %sp, not to %esp.
 2006-05-06 19:44:23 +00:00
Michael Brown
f8e087767b Allow access to variables in .text16 as well as .data16. Chained 
interrupt vectors, for example, will be easiest to handle if placed in
.text16.
 2006-05-06 18:57:31 +00:00
Michael Brown
c10d1aa9d7 Preserve GDT across prot_call(). 2006-05-06 18:52:27 +00:00
Michael Brown
dcc1b0054e This line should not have been checked in 2006-05-04 23:22:42 +00:00
Michael Brown
832807726a Add infrastructure to support access to .data16 (and .text16) variables 
from protected-mode code.

Set up %ds to point to .data16 in prot_to_real, so that code specified
via REAL_EXEC() and friends can access variables in .data16.

Move most real-mode librm variables from .text16 to .data16.
 2006-05-04 23:14:06 +00:00
Michael Brown
f4429533a6 Added methods for efficiently declaring and accessing variables in 
.data16.  librm will need to supply "char *data16", i.e. the virtual
address of the start of .data16.
 2006-05-04 17:00:20 +00:00
Michael Brown
f8f75cef5b BSS is now zeroed by libprefix (along with the otherwise non-zeroable 
portions such as the stack) during the installation process.

init_fns() are called from main().  We need to think about initial
control flow some more.
 2006-05-02 21:10:45 +00:00
Michael Brown
cc23057b59 Typo 2006-05-02 21:09:29 +00:00
Michael Brown
10c28a51bd Create two easy-to-use entry points in libprefix: install and 
install_prealloc.  I *think* these will suffice for all the 16-bit
prefixes.
 2006-05-02 20:51:07 +00:00
Michael Brown
9e1dd6402d <name>_size variable is no longer needed, since we don't copy the code. 
However, it's worth adding a .size directive so that objdump reports the
correct sizes for the code fragments.
 2006-05-02 16:38:46 +00:00
Michael Brown
9fcded3d23 Towards a(nother) new real-mode infrastructure, in which we take 
advantage of the fact that we have to have a permanently-resident block
in base memory.
 2006-05-02 15:41:21 +00:00
Michael Brown
8f62b39c03 Move stack out to separate object, so that having a stack doesn't drag in 
setup.S.
 2006-05-02 14:57:48 +00:00
Michael Brown
5463169c1a Verified as working 2006-05-02 14:04:21 +00:00
Michael Brown
d081d65d48 This should be much more elegant: we use flat real mode for the 
highmem data, so decompress16 will be able to unpack blocks bigger
than 64kB.
 2006-05-01 22:35:19 +00:00
Michael Brown
cc8821a443 Checking in because I don't want to lose this rather neat code for 
running the decompresser in 16:16 protected mode using the real-mode
stack.  However, there's an even simpler way to do it...
 2006-05-01 21:26:44 +00:00
Michael Brown
2462047128 Typo 2006-04-30 18:19:39 +00:00
Michael Brown
9e1becaf8a Merge TCP aborted(), timedout() and closed() methods into a single 
closed() method with a reason code.
 2006-04-30 16:59:45 +00:00
Michael Brown
8afb6303fb Half-way tidy 2006-04-30 15:23:29 +00:00
Michael Brown
04b6a1e004 Make all TCP methods optional; at least FTP data is a read-only 
connection and so legitimately ignores acked() and senddata().
 2006-04-30 13:20:40 +00:00
Michael Brown
aec0e127d2 Proof-of-concept FTP implementation 2006-04-30 12:02:07 +00:00
Michael Brown
a42092d2a0 Add a temporary snprintf, so that safely-written code can at least 
compile, even if it won't yet be safe.
 2006-04-30 12:01:31 +00:00
Michael Brown
8df7e74990 Fix up prototype of strtoul() to match POSIX. 2006-04-30 11:45:38 +00:00
Michael Brown
01bd78d62a Created net/tcp and moved hello.c there 2006-04-30 09:34:11 +00:00
Michael Brown
7af478b30d Make tcp_connect() void; it will eventually have no failure case. 2006-04-30 02:13:52 +00:00
Michael Brown
9c9208a132 Put the TCP connection periodic processing in tcp.c, where it belongs. 2006-04-30 02:08:42 +00:00
Michael Brown
178b0a7e5e Consistency 2006-04-30 01:35:01 +00:00
Michael Brown
592a5a99c8 Moved uIP and tcp.c from proto/ to net/ 2006-04-30 01:16:37 +00:00
Michael Brown
352bf1bda2 Move init.h to gpxe/init.h. 2006-04-30 01:08:52 +00:00
Michael Brown
bac97eb979 Change semantics of network API so that packet-absorbing calls *always* 
take ownership of the packet, rather than doing so only if they return
success.  This breaks semantic compatibility with Linux's
hard_start_xmit() method, but means that we don't have to worry so much
about error cases.

Split mechanism of processing received packets (net_rx_process()) out
from policy (net_step()), preparatory to putting net_step() in a separate
object.
 2006-04-29 17:17:43 +00:00
Michael Brown
23c494d14e Added basic code for implementing co-operative multitasking. 
Yes, you really can do it in 65 bytes.
 2006-04-29 16:42:09 +00:00
Michael Brown
5fe31f1014 Give uIP a static IP address for proof-of-concept testing 2006-04-28 14:15:21 +00:00
Michael Brown
129c6c3968 Network layer now works as a proof of concept 2006-04-28 14:13:50 +00:00
Michael Brown
1488cd3b73 Fix a couple of broken assertions, and align the buffer correctly. 2006-04-28 14:09:31 +00:00
Michael Brown
79f64eea55 Transmit the buffer contents, not the buffer descriptor... 2006-04-28 14:08:41 +00:00
Michael Brown
51feeab445 Add an explicit failure debug message 2006-04-28 14:07:41 +00:00
Michael Brown
084f6b18f7 Exclude bin directory from tags generation. 
Create something that might be usable as a symbol list for bochs'
internal debugger.
 2006-04-28 14:07:08 +00:00
Michael Brown
d8e99bf28f Gave up on adding POSIX errno's as required, and just added (almost) all 
of them in one go.

EBADIMG has been replaced by ENOEXEC, and EIMGRET by ECANCELED.
 2006-04-28 13:44:34 +00:00
Michael Brown
82c4afcb32 Updated instructions to reflect current reality. 2006-04-26 00:40:27 +00:00
Michael Brown
0eb0dd0437 Hardcoded paths to ../../src/bin avoid one step in the instructions. 2006-04-26 00:31:04 +00:00
Michael Brown
c67d81bd13 Avoid the need for a symlink to the BIOS directory; just use the locally 
checked-out copy.
 2006-04-26 00:25:28 +00:00
Michael Brown
c378213387 Much safer to use a TAP device statically allocated with tunctl. 2006-04-26 00:15:41 +00:00
Michael Brown
297ae0f8d5 Updated to syntax required by latest bochs CVS. 2006-04-26 00:14:19 +00:00
Michael Brown
18f620ca5d Updated to current bochs CVS 2006-04-26 00:09:52 +00:00
Michael Brown
cfae86f6c8 Glenn managed to shrink .text by 5 more bytes. 2006-04-25 21:48:16 +00:00
Michael Brown
fee8b91015 D'oh 2006-04-25 12:56:18 +00:00
Michael Brown
7a82c3eca3 Added missing ssize_t 2006-04-25 12:55:23 +00:00
Michael Brown
cf3783b4ca Actually, it's probably a good idea to have packet buffers avoid 4kB 
crossings.
 2006-04-25 12:11:36 +00:00
Michael Brown
00a1de964d Update to use POSIX-like API. 2006-04-25 12:04:07 +00:00
Michael Brown
face774c4c Fixed erroneous comparison 2006-04-25 11:54:58 +00:00