-
Notifications
You must be signed in to change notification settings - Fork 725
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Add windows implementation of wasm2c runtime
Split out from #1833
- Loading branch information
Showing
10 changed files
with
560 additions
and
37 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,190 @@ | ||
| // Based on | ||
| // https://web.archive.org/web/20191012035921/http://nadeausoftware.com/articles/2012/01/c_c_tip_how_use_compiler_predefined_macros_detect_operating_system#BSD | ||
| // Check for any posix or unix OS | ||
| #if !defined(_WIN32) && (defined(__unix__) || defined(__unix) || \ | ||
| (defined(__APPLE__) && defined(__MACH__))) | ||
|
|
||
| #include "wasm-rt-os.h" | ||
| #include "wasm-rt.h" | ||
|
|
||
| #include <errno.h> | ||
| #include <inttypes.h> | ||
| #include <stdio.h> | ||
| #include <stdlib.h> | ||
| #include <string.h> | ||
|
|
||
| #if defined(__APPLE__) && defined(__MACH__) | ||
| // Macs priors to OSX 10.12 don't have the clock functions. So we will use mac | ||
| // specific options | ||
| #include <mach/mach_time.h> | ||
| #include <sys/time.h> | ||
| #endif | ||
| #include <sys/mman.h> | ||
| #include <unistd.h> | ||
|
|
||
| #ifdef VERBOSE_LOGGING | ||
| #define VERBOSE_LOG(...) \ | ||
| { printf(__VA_ARGS__); } | ||
| #else | ||
| #define VERBOSE_LOG(...) | ||
| #endif | ||
|
|
||
| size_t os_getpagesize() { | ||
| return getpagesize(); | ||
| } | ||
|
|
||
| void* os_mmap(void* hint, size_t size, int prot, int flags) { | ||
| int map_prot = PROT_NONE; | ||
| int map_flags = MAP_ANONYMOUS | MAP_PRIVATE; | ||
| uint64_t request_size, page_size; | ||
| uint8_t* addr; | ||
|
|
||
| page_size = (uint64_t)os_getpagesize(); | ||
| request_size = (size + page_size - 1) & ~(page_size - 1); | ||
|
|
||
| if ((size_t)request_size < size) | ||
| /* integer overflow */ | ||
| return NULL; | ||
|
|
||
| if (request_size > 16 * (uint64_t)UINT32_MAX) | ||
| /* At most 16 G is allowed */ | ||
| return NULL; | ||
|
|
||
| if (prot & MMAP_PROT_READ) | ||
| map_prot |= PROT_READ; | ||
|
|
||
| if (prot & MMAP_PROT_WRITE) | ||
| map_prot |= PROT_WRITE; | ||
|
|
||
| if (prot & MMAP_PROT_EXEC) | ||
| map_prot |= PROT_EXEC; | ||
|
|
||
| #if defined(BUILD_TARGET_X86_64) || defined(BUILD_TARGET_AMD_64) | ||
| #ifndef __APPLE__ | ||
| if (flags & MMAP_MAP_32BIT) | ||
| map_flags |= MAP_32BIT; | ||
| #endif | ||
| #endif | ||
|
|
||
| if (flags & MMAP_MAP_FIXED) | ||
| map_flags |= MAP_FIXED; | ||
|
|
||
| addr = mmap(hint, request_size, map_prot, map_flags, -1, 0); | ||
|
|
||
| if (addr == MAP_FAILED) | ||
| return NULL; | ||
|
|
||
| return addr; | ||
| } | ||
|
|
||
| void os_munmap(void* addr, size_t size) { | ||
| uint64_t page_size = (uint64_t)os_getpagesize(); | ||
| uint64_t request_size = (size + page_size - 1) & ~(page_size - 1); | ||
|
|
||
| if (addr) { | ||
| if (munmap(addr, request_size)) { | ||
| printf("os_munmap error addr:%p, size:0x%" PRIx64 ", errno:%d\n", addr, | ||
| request_size, errno); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| int os_mprotect(void* addr, size_t size, int prot) { | ||
| int map_prot = PROT_NONE; | ||
| uint64_t page_size = (uint64_t)os_getpagesize(); | ||
| uint64_t request_size = (size + page_size - 1) & ~(page_size - 1); | ||
|
|
||
| if (!addr) | ||
| return 0; | ||
|
|
||
| if (prot & MMAP_PROT_READ) | ||
| map_prot |= PROT_READ; | ||
|
|
||
| if (prot & MMAP_PROT_WRITE) | ||
| map_prot |= PROT_WRITE; | ||
|
|
||
| if (prot & MMAP_PROT_EXEC) | ||
| map_prot |= PROT_EXEC; | ||
|
|
||
| return mprotect(addr, request_size, map_prot); | ||
| } | ||
|
|
||
| void* os_mmap_aligned(void* addr, | ||
| size_t requested_length, | ||
| int prot, | ||
| int flags, | ||
| size_t alignment, | ||
| size_t alignment_offset) { | ||
| size_t padded_length = requested_length + alignment + alignment_offset; | ||
| uintptr_t unaligned = (uintptr_t)os_mmap(addr, padded_length, prot, flags); | ||
|
|
||
| VERBOSE_LOG( | ||
| "os_mmap_aligned: alignment:%llu, alignment_offset:%llu, " | ||
| "requested_length:%llu, padded_length: %llu, initial mapping: %p\n", | ||
| (unsigned long long)alignment, (unsigned long long)alignment_offset, | ||
| (unsigned long long)requested_length, (unsigned long long)padded_length, | ||
| (void*)unaligned); | ||
|
|
||
| if (!unaligned) { | ||
| return (void*)unaligned; | ||
| } | ||
|
|
||
| // Round up the next address that has addr % alignment = 0 | ||
| const size_t alignment_corrected = alignment == 0 ? 1 : alignment; | ||
| uintptr_t aligned_nonoffset = | ||
| (unaligned + (alignment_corrected - 1)) & ~(alignment_corrected - 1); | ||
|
|
||
| // Currently offset 0 is aligned according to alignment | ||
| // Alignment needs to be enforced at the given offset | ||
| uintptr_t aligned = 0; | ||
| if ((aligned_nonoffset - alignment_offset) >= unaligned) { | ||
| aligned = aligned_nonoffset - alignment_offset; | ||
| } else { | ||
| aligned = aligned_nonoffset - alignment_offset + alignment; | ||
| } | ||
|
|
||
| // Sanity check | ||
| if (aligned < unaligned || | ||
| (aligned + (requested_length - 1)) > (unaligned + (padded_length - 1)) || | ||
| (aligned + alignment_offset) % alignment_corrected != 0) { | ||
| VERBOSE_LOG("os_mmap_aligned: sanity check fail. aligned: %p\n", | ||
| (void*)aligned); | ||
| os_munmap((void*)unaligned, padded_length); | ||
| return NULL; | ||
| } | ||
|
|
||
| { | ||
| size_t unused_front = aligned - unaligned; | ||
| if (unused_front != 0) { | ||
| os_munmap((void*)unaligned, unused_front); | ||
| } | ||
| } | ||
|
|
||
| { | ||
| size_t unused_back = | ||
| (unaligned + (padded_length - 1)) - (aligned + (requested_length - 1)); | ||
| if (unused_back != 0) { | ||
| os_munmap((void*)(aligned + requested_length), unused_back); | ||
| } | ||
| } | ||
|
|
||
| VERBOSE_LOG("os_mmap_aligned: final mapping: %p\n", (void*)aligned); | ||
| return (void*)aligned; | ||
| } | ||
|
|
||
| int os_mmap_commit(void* curr_heap_end_pointer, | ||
| size_t expanded_size, | ||
| int prot) { | ||
| return os_mprotect(curr_heap_end_pointer, expanded_size, prot); | ||
| } | ||
|
|
||
| void os_print_last_error(const char* msg) { | ||
| perror(msg); | ||
| } | ||
|
|
||
| #undef VERBOSE_LOG | ||
|
|
||
| #else | ||
| // https://stackoverflow.com/questions/26541150/warning-iso-c-forbids-an-empty-translation-unit | ||
| typedef int make_iso_compilers_happy; | ||
| #endif |
Oops, something went wrong.