reswitched / libtransistor Goto Github PK

Here's what misson sent me :

An NRO file has four sections in it: .text, .rodata, .data, and .bss.
The NRO file itself is just a concatenation of these sections, with a small header. To make things easier, we just include this header in the .text section and start .text at the beginning of the file.

The NRO header is 0x80 bytes long, which is why you see us skip 0x80 bytes at the start of .text in crt0.nro.S. The NRO header is generated by elf2nxo.py there. Another important header is the MOD0 header. I don't think we really need to include it exactly, since I'm pretty sure it's only used by the Nintendo runtime linker (rtld), but we include it anyway. It lives near the start of .data and describes, among other things, where the linking information lives.

As such, the flat NRO file looks like this:
.text

• NRO header (0x80 bytes)
  • describes where each section is in the file and how big they all are
• .text (skipping first 0x80 bytes since we overwrite them with NRO header)

.rodata

• .rodata contents
• .rela.dyn (concatenated by elf2nxo.py because I couldn't get the linker to put this in .rodata)

.data

• MOD0 header
  • describes location of .dynamic
• .data contents
• .dynamic (again concatenated by elf2nxo.py because linker troubles)

Special care needs to be taken to ensure that elf2nxo.py places .rela.dyn and .dynamic where the linker expects. If anyone is better at link scripts than I am and can figure out how to get the linker to put those sections in .rodata and .data respectively, please so.

The NRO file on the disk is pretty much exactly the same as the NRO image that gets loaded. There's no compression, no sections get moved around, or anything. The last piece of the puzzle is to relocate all the code. This really should be done in C, but right now for us, that's part of NRO loading. You can see in Nxo.cpp in Mephisto the stupid linker I wrote, and we have a similar one written in JavaScript.

newlib must have been updated recently, and with it came another implementation of libssp. This causes problems because our libssp implementation is conflicting with newlib's, causing duplicate symbols. We should either deactivate newlib's, or remove ours.

However, newlib's libssp depends on the __constructor__ symbol, which we don't support right now. I guess we should fix that too.

Tagging @dvdfreitag since he's the one who did the initial libssp port.

https://github.com/reswitched/newlib/tree/master/newlib/libc/ssp is newlib's ssp.

somethings' failing to find an ip address after I load my switch with runnro ace.nro in pegaswitch. (latest libtransistor + pegaswitch, all tools up to date)

Will probably have to include newlib with -isystem because I tried -Weverything earlier and 90% of it was newlib headers.

First need to figure out how to talk to sfdnsres, then we need to implement in libtransistor. Thanks to hthh, we have the names for all of the IResolver commands up on SwitchBrew: http://switchbrew.org/index.php?title=Sockets_services#sfdnsres. We haven't updated SwIPC yet, but it will still be able to tell us what parameters all of the commands take: https://reswitched.github.io/SwIPC/ifaces.html#nn::socket::resolver::IResolver.

Working PegaSwitch example cases

• GetHostByName
• GetHostByAddr
• GetGaiStringError
• GetAddrInfo
• GetNameInfo

libtransistor bindings

• GetHostByName
• GetHostByAddr
• GetGaiStringError
• GetAddrInfo
• GetNameInfo

For reference, here are my bsd:u PegaSwitch test cases: https://gist.github.com/misson20000/82f92209800787fedda758c4333c6c8c.

I suspect that it will follow a pretty similar pattern to how the familiar bsd socket API has been adapted for HIPC. Any parameters to the original function call will be copied verbatim as raw data, except those representing buffers or those that are pointers to output values. The first u32 in the response is what is returned from the bsd function call, the second is the new value for errno, and any remaining ones are additional output values.

Running any NRO that uses framebuffer makes it unloadable.

• NRO unload error 0x00D401

With the merge of a recent PR (I think the makefile one), I started seeing the following warning everywhere :

clang-5.0: warning: unknown platform, assuming -mfloat-abi=soft

As far as I know, the nintendo switch (more specifically, the tegra x1) supports hard floats. We should pass -mfloat-abi=hard to the Makefile ?

The current Makefile solution really isn't doing it. It's hard to read, hard to maintain, hard to read build output for, and doesn't even handle dependencies properly.

I would really appreciate the input of someone who's better at linker wrangling than I am on how to get the linker to just put everything into three sections. The current nxodance solution is really stupid. We pretty much manually concatenate sections from the ELF file into the RX, R, and RW sections that wind up in the NRO. The particularly fragile part is that we try to predict where each section goes based off of its size and a hardcoded alignment, which breaks when the linker does things like adding a section that we don't expect in the middle of everything.

When I build by make, following errors are caused by llvm-mc.
Environment
mac OS Sierra 10.12.5
LLVM version 5.0.0

$ make
mkdir -p build/lib
llvm-mc -arch=aarch64 lib/crt0.nro.S -filetype=obj -o build/lib/crt0.nro.o
lib/crt0.nro.S:1:1: error: unknown directive
.hidden NORELOC__filestart
^
lib/crt0.nro.S:3:1: error: unknown directive
.hidden NORELOC__nro_modhdr
^
lib/crt0.nro.S:5:1: error: unknown directive
.hidden NORELOC_TEXT_START_
^
lib/crt0.nro.S:6:1: error: unknown directive
.hidden NORELOC_TEXT_END_
^
lib/crt0.nro.S:7:1: error: unknown directive
.hidden NORELOC_RODATA_START_
^
lib/crt0.nro.S:8:1: error: unknown directive
.hidden NORELOC_DYNSTR_START_
^
lib/crt0.nro.S:9:1: error: unknown directive
.hidden NORELOC_DYNSYM_START_
^
lib/crt0.nro.S:10:1: error: unknown directive
.hidden NORELOC_RODATA_END_
^
lib/crt0.nro.S:11:1: error: unknown directive
.hidden NORELOC_DATA_START_
^
lib/crt0.nro.S:12:1: error: unknown directive
.hidden NORELOC_DYNAMIC_START_
^
lib/crt0.nro.S:13:1: error: unknown directive
.hidden NORELOC_GOT_START_
^
lib/crt0.nro.S:14:1: error: unknown directive
.hidden NORELOC_GOT_PLT_START_
^
lib/crt0.nro.S:15:1: error: unknown directive
.hidden NORELOC_DATA_END_
^
lib/crt0.nro.S:16:1: error: unknown directive
.hidden NORELOC_BSS_START_
^
lib/crt0.nro.S:17:1: error: unknown directive
.hidden NORELOC_BSS_END_

Should we get rid of those, and use intX_t everywhere instead ?

Here is my Log building an Nro bigger than 20 MB , the issue dont happen with smaller files up to 16Mega.

Switch Crashes with Error Code: 2168-0003 (cant also load the file with Yuzu)

• NRO 42614784B (42614784B) bss 19767296B
• NRO base at 0x000000321576C000
• found suitable block at 0x58b8c00000, size 0x1ed000
• found suitable block at 0x58b90ed000, size 0xc2000
• found suitable block at 0x58b992f000, size 0x6d4000
• found suitable block at 0x58ba007000, size 0x8000
• found suitable block at 0x58ba02e000, size 0xd2000
• found suitable block at 0x58ba1c0000, size 0x44000
• found suitable block at 0x58ba362000, size 0x71f000
• found suitable block at 0x58baa82000, size 0x1000
• found suitable block at 0x58babda000, size 0x1000
• found suitable block at 0x58bac4a000, size 0x1000
• found suitable block at 0x58bb3d4000, size 0x1000
• found suitable block at 0x58bb3eb000, size 0x1000
• found suitable block at 0x58bb45a000, size 0x1000
• found suitable block at 0x58bb45c000, size 0x1000
• found suitable block at 0x58bb4b5000, size 0x1000
• found suitable block at 0x58bb4bf000, size 0x1000
• found suitable block at 0x58bcca4000, size 0x1000
• splitting this block around our overridden heap...
• overridden heap @ 0x58c0376000, size 0xzx
• block before: 0x58bccbc000, 0x36ba000
• block after: 0x58c0776000, 0x3452000
• found suitable block at 0x58c827f000, size 0x8981000
• mapped 275083264B contiguous memory block
• writing NRO config

more than half of the times, calling hid_init() returns error 0xdc01
test_hid.c suffers of this for example
to continue brings a crash of the switch

( being able to test if a button is pushed is really usfeul during tests )

We need to figure out how to make exit thread-safe. I'm getting kind-of doubtful this is possible to do entirely, but right now exit in another thread gives us a segfault. We might be able to at least give it a saner behavior.

~/libtransistor# make
mkdir -p /root/libtransistor/build/lib
llvm-mc -arch=aarch64 -triple aarch64-none-switch /root/libtransistor/lib/crt0.nro.S -filetype=obj -o /root/libtransistor/build/lib/crt0.nro.o
/root/libtransistor/lib/crt0.nro.S:42:21: error: expected compatible register, symbol or integer in range [0, 4095]
        sub sp, sp, 0x10

Ubuntu trusty, Just installed llvm, clang, cmake, python-lz4, etc.

There currently is no license associated with libtransistor, which makes it default to All rights reserved. It seems libnx is using ISC (basically "everyone can do whatever"). Should we follow suit ?

Looking at libnx for inspiration, it seems that their newlib is actually a clean newlib from upstream (well, from devkitPro), and all they do is populate a global structure of function pointers (for the syscalls). This is called early in their crt0.

By doing this, it is possible to keep newlib clean, making it easier to update, and creates a clear separation of concerns between the libc and the "OS support". Furthermore, it would avoid the "submodule dance" whenever we want to add a feature to the libc, where we have to update the newlib and libtransistor in order to propagate changes.

@dvdfreitag

So I'm compiling this from an archlinux box on which I installed clang, llvm, lld and the python deps. I'm currently stuck with the following error :

ld.lld -Bsymbolic --shared --emit-relocs --no-gc-sections --no-undefined -T link.T -o build/test/test_malloc.nro.s        o build/test/test_malloc.o --whole-archive build/lib/libtransistor.nro.a --no-whole-archive newlib/aarch64-none-sw        itch/newlib/libc.a
ld.lld: error: undefined symbol: __stack_chk_guard
>>> referenced by ipc.c:53 (lib/ipc.c:53)
>>>               ipc.o:(ipc_marshal) in archive build/lib/libtransistor.nro.a

Full output : https://gist.github.com/5af916a59ce82bc73aabe91bf14eeaf7

It'd be nice if we had an auto-generated documentation of libtransistor (the core lib - newlib is posix-compliant and has its own docs) hosted on gh-pages, using travis and doxygen to auto build them on each commit.

@3Daniel expressed interest in implementing this.

Lots of people don't see it. It's the easiest way to get a simple project. We should do something so people find that.

Right now, ace_loader's readme is a bit barren. We should probably explain how it works, and how to use it, as it's likely to become the main way to use homebrew.

Hello,

When compiling on archlinux, I get the following error running make :

roblabla@roblab ~/Dropbox/dev/src/c/libtransistor master $ make
mkdir -p build/lib
llvm-mc -arch=aarch64 -triple aarch64-none-switch lib/crt0.nro.S -filetype=obj -o build/lib/crt0.nro.o
mkdir -p build/lib
llvm-mc -arch=aarch64 -triple aarch64-none-switch lib/svc.S -filetype=obj -o build/lib/svc.o
mkdir -p build/lib
clang -g -fPIC -ffreestanding -fexceptions -target aarch64-none-linux-gnu -O0 -mtune=cortex-a53 -I include/ -I newlib/newlib/libc/include/ -I newlib/newlib/libc/sys/switch/include/ -Wall -c -o build/lib/ipc.o lib/ipc.c
lib/ipc.c:366:7: warning: unused variable 'c_descriptor_flags' [-Wunused-variable]
  int c_descriptor_flags = (header1 >> 10) & 0xF;
      ^
lib/ipc.c:397:7: warning: unused variable 'raw_data_start' [-Wunused-variable]
  int raw_data_start = h;
      ^
mkdir -p build/lib
llvm-mc -arch=aarch64 -triple aarch64-none-switch lib/tls.S -filetype=obj -o build/lib/tls.o
2 warnings generated.
mkdir -p build/lib
clang -g -fPIC -ffreestanding -fexceptions -target aarch64-none-linux-gnu -O0 -mtune=cortex-a53 -I include/ -I newlib/newlib/libc/include/ -I newlib/newlib/libc/sys/switch/include/ -Wall -c -o build/lib/util.o lib/util.c
In file included from lib/util.c:5:
In file included from include/libtransistor/ipc/bsd.h:4:
In file included from /usr/include/sys/types.h:156:
/usr/include/bits/stdint-intn.h:27:19: error: typedef redefinition with different types ('__int64_t' (aka 'long long') vs 'long')
typedef __int64_t int64_t;
                  ^
/usr/lib/clang/5.0.0/include/stdint.h:107:24: note: previous definition is here
typedef __INT64_TYPE__ int64_t;
                       ^
In file included from lib/util.c:5:
In file included from include/libtransistor/ipc/bsd.h:6:
In file included from /usr/include/netinet/in.h:22:
/usr/include/bits/stdint-uintn.h:27:20: error: typedef redefinition with different types ('__uint64_t' (aka 'unsigned long long') vs 'unsigned long')
typedef __uint64_t uint64_t;
                   ^
/usr/lib/clang/5.0.0/include/stdint.h:109:25: note: previous definition is here
typedef __UINT64_TYPE__ uint64_t;
                        ^
2 errors generated.
make: *** [Makefile:43: build/lib/util.o] Error 1

So I'm not totally sure, but are we supposed to be pulling in /usr/include like this ? Shouldn't libtransistor be building independently of the host headers ?

This is heavily related to #58 : We'll need to figure out a way to share resources between multiple started NROs, off the top of my head : filesystem hierarchy and open file descriptors. This would allow us to port stuff like bash without too much trouble, and it would "generalize" the way to pass file descriptors from the parent to the child (I'm thinking of stdin/stdout/stderr from ace_loader to the started process).

I think the best would be to have the libtransistor_context contain an optional pointer to the file descriptor array (or NULL if we don't want to pass any fds), which the child would copy into its own array. Something similar would probably be done to share a filesystem hierarchy.

Not so often, HID init fails with 0xdc01. When this happens, it is not possible to use HID at all until console reset.
It seems to be tied to specific browser run, not to NRO runs.

We need to implement thread_local storage ! This will probably require some modifications to the linker script. This is a fairly advanced task.

There are a number of functions we don't have bindings for yet. Here is a list of all the functions in nn::socket::sf::IClient and what we have support for.

• StartMonitoring (what is this? this seems like something Nintendo. perhaps related to GetResourceStatistics?)
• Socket
• SocketExempt (again, something Nintendo?)
• Open
• Select
• Poll
• Sysctl
• Recv
• RecvFrom
• Send
• SendTo
• Accept
• Bind
• Connect
• GetPeerName
• GetSockName
• GetSockOpt
• Listen
• Ioctl
• Fcntl
• SetSockOpt
• Shutdown
• ShutdownAllSockets
• Write
• Read
• Close
• DuplicateSocket
• GetResourceStatistics
• RecvMMsg
• SendMMsg

Most of these aren't important to me, but I think we should implement Select at least.

Here's the definition straight from SwIPC:

Unknown5(u32, bytes<0x18>, buffer<unknown, 0x21, 0>, buffer<unknown, 0x21, 0>, buffer<unknown, 0x21, 0>) -> (u32, u32, buffer<unknown, 0x22, 0>, buffer<unknown, 0x22, 0>, buffer<unknown, 0x22, 0>)

Relevant signatures and definitions:

int select(int nfds, fd_set *restrict readfds,
    fd_set *restrict writefds, fd_set *restrict errorfds,
    struct timeval *restrict timeout);

struct timeval {
    long    tv_sec;         /* seconds */
    long    tv_usec;        /* microseconds */
};

See bionic for fd_set definitions: https://android.googlesource.com/platform/bionic/+/7943df62f70f686b0c77532f6617b47255d75763/libc/include/sys/select.h.

This is my best guess at what all the parameters are:

Select(u32 nfds, bytes<0x18> timeout, buffer<fd_set, 0x21, 0> readfds_in, buffer<fd_set, 0x21, 0> writefds_in, buffer<fd_set, 0x21, 0> errorfds_in) -> (u32 ret, u32 errno, buffer<fd_set, 0x22, 0> readfds_out, buffer<fd_set, 0x22, 0> writefds_out, buffer<fd_set, 0x22, 0> errorfds_out)

I'm not exactly sure how struct timeval can become 0x18 bytes long though.

For examples of PegaSwitch test cases, see ipcsock3.js: https://gist.github.com/misson20000/82f92209800787fedda758c4333c6c8c/

Currently, libtransistor doesn't pass the -nostdinc flag to clang when compiling, which causes it to use the host's headers. When I tried to add -nostdinc, I was greeted with errors about the use of stdbool.h, which isn't defined by newlib.

Here's the current flags I use to make clang happy :

        .clang_arg("-nostdinc")
        .clang_args(&["-isystem", "/usr/lib/clang/5.0.0/include"])
        .clang_args(&["-isystem", "libtransistor/newlib/newlib/libc/include"])
        .clang_args(&["-isystem", "libtransistor/newlib/newlib/libc/sys/switch/include"])
        .clang_arg("-Ilibtransistor/include")

/usr/lib/clang/CLANG_VERSION/include contains stdbool.h, among other headers, defining many built-in C types. The equivalent in GCC seems to be /usr/lib/gcc/TARGET_TRIPLET/GCC_VERSION/include.

The lack of having a way to allocate contiguous type-5 memory is now blocking a number of hacks.

• https://github.com/reswitched/libtransistor-retroarch/commit/8cd29904018bff45c6090b6c822acd87e63a6628#diff-e484c82e4f20c1fcd08b73abd69671bdR30
• https://github.com/reswitched/libtransistor/blob/audio/test/test_audio_output.c#L24
• https://github.com/reswitched/libtransistor/blob/graphics-experimental/lib/display/surface.c#L10

The proposed API is to pass a function pointer in libtransistor_context for void *(*alloc_pages)(size_t min, size_t max, size_t *actual). For allocations such as those listed above, min would equal max. For allocating space for the heap, min can be 0x1000 so that we can allocate any small blocks that may exist, since we're going to be mapping them anyway and can't use them for much else.

So yeah, just running make somehow doesn't work for me. I get the following error:

make
mkdir -p build/lib
llvm-mc -arch=aarch64 -triple aarch64-none-switch lib/crt0.nro.S -filetype=obj -o build/lib/crt0.nro.o
llvm-mc: error: invalid target 'aarch64'.
make: *** [Makefile:47: build/lib/crt0.nro.o] Error 1

I'm running Solus Budgie (Linux) and all dependencies are installed properly. I also tried removing the aarch64-none-switch that was added in order to fix building on Mac, but that didn't do the trick unfortunately.

If you have any ideas on how to fix this, I'd be grateful.

Thanks!

libcxx requires long double support, but newlib does not implement it. There is a stubbed implementation which just calls the double version of the function, for example: cosl.

There are a few options to resolve this issue:

1. Make sure _LDBL_EQ_DBL is defined, and fake long double support with newlib's existing stubs. This will truncate all 128-bit floats to 64-bit floats.
2. Either find or implement a libmath that will include the necessary long double support
3. Modify newlib and implement the missing functions alongside the existing stubs

The .ctors section contains an array of funtion pointers that the dynamic loader is supposed to call. This is necessary to get newlib's libssp working.

libtransistor claims to be ISC, yet:

https://github.com/reswitched/libtransistor/blob/master/include/libtransistor/fd.h#L5
"This comes straight from the linux kernel".

The Linux kernel is licensed under the GPLv2 license (only), therefore causing libtransistor and all the programs using it GPLv2 in effect.

As a solution, you could use parts of the FreeBSD kernel instead.

Right now, ace_loader sends "remapped" heap in the OverrideHeap loader section. This is bad for multiple reasons:

1. We end up needing hacks to get "real" Heap, that is necessary for some syscalls (See #69)
2. Libnx expects real heap there.

We should either find a way to properly unmap the whole browser, or settle with finding the biggest contiguous region in our heap.

A few users got burned by this already. We should check if uid = 0 and deny building if that's the case (maybe with an escape hatch flag ?).

Some services hand out handles to the user. The user may forget to close them. We should keep track on them, and automatically close them on exit. For one: it's saner, and for two, the current behavior of leaving them open causes crashes because HBL is stingy. See #110

bpc#1 will reboot the console: https://github.com/reswitched/pegaswitch/blob/master/exploit/main.js#L117

We should probably call setjmp very early in the start function.

When libtransistor NROs are started from hbl, they crash on exit, yielding error 2347-0026. This is an undocumented errno. Pinging @plutooo on this. Any hints as to what that error code means ?

Libnx sometimes returns from the entry point with a fucked up stack, which causes segfault and all other kind of goodies : https://github.com/switchbrew/libnx/blob/5b0de6c0546da3aa9af7cb6606fee48e091688d9/nx/source/runtime/env.c#L91

We should call the NRO in an asm thunk that backs up all registers before jumping to the entry point, and restoring the registers before returning.

In trying to load resources for an application, one will quickly encounter the problem of no filesystem functions having been implemented.

I'd like to implement a sort of virtual filesystem API, where you can mount filesystems provided by various modules and access files from there. Filesystem providers could include some sort of network filesystem, a read-only filesystem embedded in the binary, one that lives in memory, or, eventually, native filesystems such as the console's internal storage and SD card.

Thoughts? What exactly do we want this to look like?

    "/usr/bin/clang"

  is not able to compile a simple test program.

  It fails with the following output:

    Change Dir: /home/connor/oss/libtransistor/build/compiler-rt/CMakeFiles/CMakeTmp

    Run Build Command:"/usr/bin/make" "cmTC_1967b/fast"
    make[1]: Entering directory '/home/connor/oss/libtransistor/build/compiler-rt/CMakeFiles/CMakeTmp'
    /usr/bin/make -f CMakeFiles/cmTC_1967b.dir/build.make CMakeFiles/cmTC_1967b.dir/build
    make[2]: Entering directory '/home/connor/oss/libtransistor/build/compiler-rt/CMakeFiles/CMakeTmp'
    Building C object CMakeFiles/cmTC_1967b.dir/testCCompiler.c.o
    /usr/bin/clang --target=aarch64-none-linux-gnu   -g -fPIC -ffreestanding -fexceptions -fuse-ld=lld -fstack-protector-strong -O0 -mtune=cortex-a53 -target aarch64-none-linux-gnu -nostdlib -nostdlibinc -isystem /home/connor/oss/libtransistor/newlib/newlib/libc/sys/switch/include/ -isystem /home/connor/oss/libtransistor/newlib/newlib/libc/include/ -I/home/connor/oss/libtransistor/include/ -I /home/connor/oss/libtransistor/build/sdl2_install/include/ -D__SWITCH__=1    -o CMakeFiles/cmTC_1967b.dir/testCCompiler.c.o   -c /home/connor/oss/libtransistor/build/compiler-rt/CMakeFiles/CMakeTmp/testCCompiler.c
    clang-5.0: warning: argument unused during compilation: '-fuse-ld=lld' [-Wunused-command-line-argument]
    Linking C executable cmTC_1967b
    /usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_1967b.dir/link.txt --verbose=1
    /usr/bin/clang --target=aarch64-none-linux-gnu -g -fPIC -ffreestanding -fexceptions -fuse-ld=lld -fstack-protector-strong -O0 -mtune=cortex-a53 -target aarch64-none-linux-gnu -nostdlib -nostdlibinc -isystem /home/connor/oss/libtransistor/newlib/newlib/libc/sys/switch/include/ -isystem /home/connor/oss/libtransistor/newlib/newlib/libc/include/ -I/home/connor/oss/libtransistor/include/ -I /home/connor/oss/libtransistor/build/sdl2_install/include/ -D__SWITCH__=1   -fuse-ld=lld  CMakeFiles/cmTC_1967b.dir/testCCompiler.c.o  -o cmTC_1967b
    clang-5.0: error: invalid linker name in argument '-fuse-ld=lld'
    make[2]: *** [CMakeFiles/cmTC_1967b.dir/build.make:98: cmTC_1967b] Error 1
    make[2]: Leaving directory '/home/connor/oss/libtransistor/build/compiler-rt/CMakeFiles/CMakeTmp'
    make[1]: *** [Makefile:126: cmTC_1967b/fast] Error 2
    make[1]: Leaving directory '/home/connor/oss/libtransistor/build/compiler-rt/CMakeFiles/CMakeTmp'




  CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
  CMakeLists.txt:14 (project)


-- Configuring incomplete, errors occurred!
See also "/home/connor/oss/libtransistor/build/compiler-rt/CMakeFiles/CMakeOutput.log".
See also "/home/connor/oss/libtransistor/build/compiler-rt/CMakeFiles/CMakeError.log".
make: *** [Makefile:92: /home/connor/oss/libtransistor/build/compiler-rt/Makefile] Error 1

build is on arch linux with latest llvm and clang installed.

The current implementation uses a pool of memory in .bss. Although this is what many sysmodules do, it's kinda stupid. The better option would be to use svc_set_heap_size. However, if we're running under the browser, I'm think this will move the heap somewhere else and segfault running browser code. Not sure about that, but I haven't managed to call it under the browser without crashing somehow.

So I was wondering how good an idea it'd be to generate bindings automatically from SwIPC (with something like reswitched/SwIPC#9). Basically, replace most of the stuff in the ipc/ folder with auto-generated things.

This would be a good litmus test to ensure that our SwIPC documentation is correct, while also removing a bunch of boilerplate.

@misson20000 how do you feel about this ?

The documentation PR was a good first step in the right direction, but it still needs a lot of work:

• The main page is currently set to the README. This doesn't make a whole lot of sense, it should instead be a high level presentation of libtransistor, with a list of "modules"
• Talking of modules, we should use doxygen's grouping system such that we generate a better looking docs. https://www.stack.nl/~dimitri/doxygen/manual/grouping.html
• Right now the list of functions is hidden deep. It'd be nice to find a way to put this in the forefront.