From d49add907c5c072252934e2a5a1cd223474b711a Mon Sep 17 00:00:00 2001 From: flysand7 Date: Mon, 24 Jul 2023 02:33:12 +1100 Subject: [PATCH] TinyRT abstraction layer --- .gitignore | 1 + build.lua | 34 ++++++++++++++++++ include/cia_definitions.h | 5 +++ src/ciabatta.c | 7 ++++ src/linux/entry.c | 2 +- src/linux/errno.c | 76 +++++++++++++++++++++++++++++++++++++++ src/linux/tinyrt.c | 56 +++++++++++++++++++++++++++++ src/linux/tinyrt.mf | 13 +++++++ src/tinyrt.h | 58 ++++++++++++++++++++++++++++++ src/windows/tinyrt.mf | 0 10 files changed, 251 insertions(+), 1 deletion(-) create mode 100644 src/linux/errno.c create mode 100644 src/linux/tinyrt.c create mode 100644 src/linux/tinyrt.mf create mode 100644 src/tinyrt.h create mode 100644 src/windows/tinyrt.mf diff --git a/.gitignore b/.gitignore index 4d7134a..0657bc7 100644 --- a/.gitignore +++ b/.gitignore @@ -12,5 +12,6 @@ a.out *.o *.4coder *.rdbg +*.iface.h test/ test_folder/ \ No newline at end of file diff --git a/build.lua b/build.lua index 5592c2b..0f7771b 100755 --- a/build.lua +++ b/build.lua @@ -97,10 +97,43 @@ function prefix_quote(prefix) end end +-- Generate TinyRT interface file for the platform +print('==> Generating TinyRT interface definitions') +local tinyrt_manifest_path = path.join('src', platform, 'tinyrt.mf') +if not path.exists(tinyrt_manifest_path) then + print('ERROR: tinyrt manifest wasnt found: '..tinyrt_manifest_path) +end +tinyrt_iface_hdr = io.open(path.join('src', platform, 'tinyrt.iface.h'), 'wb') +tinyrt_iface_hdr:write('\n') +tinyrt_iface_hdr:write('// This file is AUTO-GENERATED\n') +tinyrt_iface_hdr:write('// See tinyrt.mf\n') +tinyrt_iface_hdr:write('\n') +n = 1 +for line in io.lines(tinyrt_manifest_path) do + if line:len() ~= 0 and line:sub(1,1) ~= '#' and line:gsub('%s+', '') ~= '' then + local line_it = line:gmatch('[a-zA-Z0-9]+') + local api_name = line_it():upper() + local has_impl = line_it() + if has_impl == '0' or has_impl == '1' then + if has_impl == '1' then + local api_define = '#define RT_API_' .. api_name .. '\n' + tinyrt_iface_hdr:write(api_define) + end + else + print('SYNTAX ERROR AT LINE '..i..': Expected 1 or 0 for the value') + end + + end + n = n+1 +end +io.close(tinyrt_iface_hdr) + +-- Figure out compiler flags local cflags = table.concat(compiler_flags, ' ')..' '.. table.concat(map(compiler_defines, prefix('-D ')), ' ')..' '.. table.concat(map(includes, prefix_quote('-I ')), ' ')..' ' +print('==> Compiling ciabatta') print('Flags: ' .. cflags) -- Functions for compiling, linking and assembling individual files @@ -130,6 +163,7 @@ function archive(srcs, out) os.execute(cmdline) end +-- Build ciabatta path.mkdir('lib') path.mkdir('bin') diff --git a/include/cia_definitions.h b/include/cia_definitions.h index 64fe76a..02312c8 100644 --- a/include/cia_definitions.h +++ b/include/cia_definitions.h @@ -59,6 +59,11 @@ typedef unsigned int uint32_t; #error "Platform not implemented" #endif +// stdbool.h +typedef _Bool bool; +#define true ((bool)1) +#define false ((bool)0) + // Short type definitions typedef int8_t i8; typedef uint8_t u8; diff --git a/src/ciabatta.c b/src/ciabatta.c index 6396d56..8088848 100644 --- a/src/ciabatta.c +++ b/src/ciabatta.c @@ -3,5 +3,12 @@ #if os_is_linux() #include "linux/syscall.c" + #include "linux/errno.c" #include "linux/entry.c" + // TinyRT interface + #include "linux/tinyrt.iface.h" + #include "tinyrt.h" + #include "linux/tinyrt.c" +#elif os_is_windows() + #error "Not implemented yet" #endif diff --git a/src/linux/entry.c b/src/linux/entry.c index 3d28731..1978600 100644 --- a/src/linux/entry.c +++ b/src/linux/entry.c @@ -24,6 +24,6 @@ void __libc_start_main( main(argc, argv, envp); fini(); // glibc bug - dl_fini(); + // dl_fini(); syscall_exit(0); } diff --git a/src/linux/errno.c b/src/linux/errno.c new file mode 100644 index 0000000..df42d98 --- /dev/null +++ b/src/linux/errno.c @@ -0,0 +1,76 @@ + +#define EPERM 1 /* Operation not permitted */ +#define ENOENT 2 /* No such file or directory */ +#define ESRCH 3 /* No such process */ +#define EINTR 4 /* Interrupted system call */ +#define EIO 5 /* Input/output error */ +#define ENXIO 6 /* Device not configured */ +#define E2BIG 7 /* Argument list too long */ +#define ENOEXEC 8 /* Exec format error */ +#define EBADF 9 /* Bad file descriptor */ +#define ECHILD 10 /* No child processes */ +#define EDEADLK 11 /* Resource deadlock avoided */ +#define ENOMEM 12 /* Cannot allocate memory */ +#define EACCES 13 /* Permission denied */ +#define EFAULT 14 /* Bad address */ +#define EBUSY 16 /* Device busy */ +#define EEXIST 17 /* File exists */ +#define EXDEV 18 /* Cross-device link */ +#define ENODEV 19 /* Operation not supported by device */ +#define ENOTDIR 20 /* Not a directory */ +#define EISDIR 21 /* Is a directory */ +#define EINVAL 22 /* Invalid argument */ +#define ENFILE 23 /* Too many open files in system */ +#define EMFILE 24 /* Too many open files */ +#define ENOTTY 25 /* Inappropriate ioctl for device */ +#define ETXTBSY 26 /* Text file busy */ +#define EFBIG 27 /* File too large */ +#define ENOSPC 28 /* No space left on device */ +#define ESPIPE 29 /* Illegal seek */ +#define EROFS 30 /* Read-only file system */ +#define EMLINK 31 /* Too many links */ +#define EPIPE 32 /* Broken pipe */ +#define EDOM 33 /* Numerical argument out of domain */ +#define ERANGE 34 /* Result too large */ +#define EAGAIN 35 /* Resource temporarily unavailable */ +#define EWOULDBLOCK 35 /* Operation would block */ +#define EINPROGRESS 36 /* Operation now in progress */ +#define EALREADY 37 /* Operation already in progress */ +#define ENOTSOCK 38 /* Socket operation on non-socket */ +#define EDESTADDRREQ 39 /* Destination address required */ +#define EMSGSIZE 40 /* Message too long */ +#define EPROTOTYPE 41 /* Protocol wrong type for socket */ +#define ENOPROTOOPT 42 /* Protocol not available */ +#define EPROTONOSUPPORT 43 /* Protocol not supported */ +#define EOPNOTSUPP 45 /* Operation not supported */ +#define EAFNOSUPPORT 47 /* Address family not supported by protocol family */ +#define EADDRINUSE 48 /* Address already in use */ +#define EADDRNOTAVAIL 49 /* Can't assign requested address */ +#define ENETDOWN 50 /* Network is down */ +#define ENETUNREACH 51 /* Network is unreachable */ +#define ENETRESET 52 /* Network dropped connection on reset */ +#define ECONNABORTED 53 /* Software caused connection abort */ +#define ECONNRESET 54 /* Connection reset by peer */ +#define ENOBUFS 55 /* No buffer space available */ +#define EISCONN 56 /* Socket is already connected */ +#define ENOTCONN 57 /* Socket is not connected */ +#define ETIMEDOUT 60 /* Operation timed out */ +#define ECONNREFUSED 61 /* Connection refused */ +#define ELOOP 62 /* Too many levels of symbolic links */ +#define ENAMETOOLONG 63 /* File name too long */ +#define EHOSTUNREACH 65 /* No route to host */ +#define ENOTEMPTY 66 /* Directory not empty */ +#define EDQUOT 69 /* Disk quota exceeded */ +#define ENOLCK 77 /* No locks available */ +#define ENOSYS 78 /* Function not implemented */ +#define EILSEQ 84 /* Illegal byte sequence */ +#define EOVERFLOW 87 /* Value too large to be stored in data type */ +#define ECANCELED 88 /* Operation canceled */ +#define EIDRM 89 /* Identifier removed */ +#define ENOMSG 90 /* No message of desired type */ +#define ENOTSUP 91 /* Not supported */ +#define EBADMSG 92 /* Bad message */ +#define ENOTRECOVERABLE 93 /* State not recoverable */ +#define EOWNERDEAD 94 /* Previous owner died */ +#define EPROTO 95 /* Protocol error */ + diff --git a/src/linux/tinyrt.c b/src/linux/tinyrt.c new file mode 100644 index 0000000..d7e951f --- /dev/null +++ b/src/linux/tinyrt.c @@ -0,0 +1,56 @@ + +// See src/tinyrt.h file for the interface this file implements + +static RT_Status rt_file_open(RT_File *file, char *name, int rt_flags) { + if((rt_flags & 0x3) == 0) { + return RT_ERROR_BAD_PARAM; + } + int mode = 0; + int flags = 0; + if((rt_flags & 0x03) == 0x03) mode = O_RDWR; + else if(rt_flags & RT_FILE_READ) mode = O_RDONLY; + else if(rt_flags & RT_FILE_WRITE) mode = O_RDWR; + if(rt_flags & RT_FILE_CREATE) flags |= O_CREAT; + if(rt_flags & RT_FILE_EXCLUSIVE) flags |= O_EXCL; + if(rt_flags & RT_FILE_TRUNCATE) flags |= O_TRUNC; + i64 fd = syscall_open(name, flags, mode); + if(-fd == EACCES) return RT_STATUS_FILE_ACCESS; + if(-fd == EEXIST) return RT_STATUS_FILE_EXISTS; + if(-fd == ENOENT) return RT_STATUS_FILE_NOT_EXISTS; + if(-fd == EINVAL) return RT_ERROR_BAD_PARAM; + if(-fd == EISDIR) return RT_STATUS_FILE_DIRECTORY; + // I'm too lazy to fill in the rest so lets leave it at that for now + if(fd < 0) return RT_STATUS_FILE_IO_ERROR; + file->fd = (u64)fd; + file->flags = rt_flags; + return RT_STATUS_OK; +} + +static RT_Status rt_file_read(u64 size, void *buffer, RT_File *from, u64 *out_bytes_read) { + i64 bytes_read = syscall_read(from->fd, buffer, size); + if(bytes_read == 0) { + return RT_STATUS_FILE_EOF; + } + if(bytes_read < 0) { + return RT_STATUS_FILE_IO_ERROR; + } + *out_bytes_read = bytes_read; + return RT_STATUS_OK; +} + +static RT_Status rt_file_write(RT_File *to, u64 size, void *buffer, u64 *out_bytes_written) { + i64 bytes_written = syscall_write(to->fd, buffer, size); + if(bytes_written < 0) { + return RT_STATUS_FILE_IO_ERROR; + } + *out_bytes_written = bytes_written; + return RT_STATUS_OK; +} + +static RT_Status rt_file_close(RT_File *file) { + i64 result = syscall_close(file->fd); + if(result < 0) { + return RT_STATUS_FILE_IO_ERROR; + } + return RT_STATUS_OK; +} diff --git a/src/linux/tinyrt.mf b/src/linux/tinyrt.mf new file mode 100644 index 0000000..b8e93ee --- /dev/null +++ b/src/linux/tinyrt.mf @@ -0,0 +1,13 @@ + +# This file contains TinyRT API subsets that are exported +# for this operating system, one name per line. This file +# is used in a build script to generate tinyrt_macro file +# and to resolve higher-level API dependencies + +# For example file = 1 means that the file API is +# implemented on this operating system and during building +# a header file will be generated containing definition of +# the form +# #define RT_API_FILE + +file = 1 diff --git a/src/tinyrt.h b/src/tinyrt.h new file mode 100644 index 0000000..c392e8c --- /dev/null +++ b/src/tinyrt.h @@ -0,0 +1,58 @@ + +#pragma once + +#include + +// Common errors +#define RT_STATUS_OK 0 // No errors +#define RT_ERROR_NOT_IMPLEMENTED -1 // Function not implemented +#define RT_ERROR_BAD_PARAM -2 // One of the function parameters was wrong + +// File API errors +#define RT_STATUS_FILE_ACCESS 1 // No access to the file +#define RT_STATUS_FILE_NO_SPACE 2 // Storage device has no space for the file +#define RT_STATUS_FILE_EXISTS 3 // File exists when shouldn't +#define RT_STATUS_FILE_NOT_EXISTS 4 // File doesn't exist when should +#define RT_STATUS_FILE_DIRECTORY 5 // The file was a directory when shouldn't've been +#define RT_STATUS_FILE_NOT_DIRECTORY 6 // The file wasn't a directory when should've been +#define RT_STATUS_FILE_NAME_TOO_LONG 7 // The filename was too long for the Filesystem +#define RT_STATUS_FILE_LOOP 8 // Too many symlinks followed or a symlink encountered when expected none +#define RT_STATUS_FILE_BUSY 9 // The device is busy if exclusive access is requested +#define RT_STATUS_FILE_TOO_MANY_OPEN 10 // Too many open files in the process +#define RT_STATUS_FILE_NO_MEMORY 11 // No kernel memory or user limit on memory allocation exceeded +#define RT_STATUS_FILE_IO_ERROR 12 // I/O error +#define RT_STATUS_FILE_BAD_FILE 13 // Bad file handle +#define RT_STATUS_FILE_EOF 14 // Read operation reached the end-of-file + +// File API flags +#define RT_FILE_READ 0x01 +#define RT_FILE_WRITE 0x02 +#define RT_FILE_CREATE 0x04 +#define RT_FILE_EXCLUSIVE 0x08 +#define RT_FILE_TRUNCATE 0x10 + +typedef i32 RT_Status; + +// API implementation flags (managed and used by the layers on top of tinyrt) +static bool _rt_api_file; +static bool _rt_api_tmpfile; + +// Initialization & termination of minirt +static RT_Status rt_init(); +static RT_Status rt_deinit(); + +// File API +#if defined(RT_API_FILE) + struct RT_File typedef RT_File; + struct RT_File { + union { + void *handle; + u64 fd; + }; + i32 flags; + }; + static RT_Status rt_file_open(RT_File *file, char *name, int flags); + static RT_Status rt_file_read(u64 size, void *buffer, RT_File *from, u64 *out_bytes_read); + static RT_Status rt_file_write(RT_File *to, u64 size, void *buffer, u64 *out_bytes_written); + static RT_Status rt_file_close(RT_File *file); +#endif diff --git a/src/windows/tinyrt.mf b/src/windows/tinyrt.mf new file mode 100644 index 0000000..e69de29