diff options
| author | Rokas Kupstys <rokups@zoho.com> | 2017-02-20 17:10:50 +0200 |
|---|---|---|
| committer | Rokas Kupstys <rokups@zoho.com> | 2017-02-20 17:24:19 +0200 |
| commit | 373e667dbc6aff5dd74f5ada139d867287e9dc1f (patch) | |
| tree | 41da1a7c7298e8ae5f146b528446b3d279480aca /lib/arch/x86/i386.S | |
| parent | a3b8bf300df20f2922275ff62293e3f882cad090 (diff) | |
| download | Nim-373e667dbc6aff5dd74f5ada139d867287e9dc1f.tar.gz | |
Coroutine rework.
* ucontext backend (default on unix)
* setjmp backend
* fibers backend (default and required on windows)
* Fixed coroutine loop timing issues
* Fixed saving of xmm registers on x64 windows
* Fixed alignment issues
* Updated coroutine sample with cooperative fibonacci calculation.
* Disable glibc security features only when platform jump functions are used
* Removed dependency on fasm.
* Using fiber api on windows.
* Other platforms and compilers will use built in assembler and .S files or API provided by platform libc.
* Replaced stack switching procs with `coroExecWithStack()` which never returns. This makes compiler always generate proper code.
Diffstat (limited to 'lib/arch/x86/i386.S')
| -rw-r--r-- | lib/arch/x86/i386.S | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/lib/arch/x86/i386.S b/lib/arch/x86/i386.S new file mode 100644 index 000000000..d7de4a4c3 --- /dev/null +++ b/lib/arch/x86/i386.S @@ -0,0 +1,64 @@ +# +# +# Nim's Runtime Library +# (c) Copyright 2015 Rokas Kupstys +# +# See the file "copying.txt", included in this +# distribution, for details about the copyright. +# +# Partially based on code from musl libc Copyright © 2005-2014 Rich Felker, et al. + +.globl narch_coroExecWithStack +.globl narch_setjmp +.globl narch_longjmp +#if defined(__MINGW32__) || defined(__MINGW64__) +.globl @narch_coroExecWithStack@8 +.globl @narch_setjmp@4 +.globl @narch_longjmp@8 +#endif +.text + + +#if defined(__MINGW32__) || defined(__MINGW64__) +@narch_coroExecWithStack@8: +#endif +narch_coroExecWithStack: + mov %edx, %esp # swap stack with one passed to func + sub $0x10, %esp # 16-byte alignment + and $-0x10, %esp # + sub $4, %esp # Simulate misalignment caused by return addr + jmp *%ecx + + +#if defined(__MINGW32__) || defined(__MINGW64__) +@narch_setjmp@4: +#endif +narch_setjmp: + mov %ebx, (%ecx) + mov %esi, 0x04(%ecx) + mov %edi, 0x08(%ecx) + mov %ebp, 0x0C(%ecx) + lea 0x04(%esp), %eax + mov %eax, 0x10(%ecx) + mov (%esp), %eax + mov %eax, 0x14(%ecx) + xor %eax, %eax + ret + + +#if defined(__MINGW32__) || defined(__MINGW64__) +@narch_longjmp@8: +#endif +narch_longjmp: + mov %edx, %eax + test %eax, %eax + jnz narch_longjmp_1 + inc %eax +narch_longjmp_1: + mov (%ecx), %ebx + mov 0x04(%ecx), %esi + mov 0x08(%ecx), %edi + mov 0x0C(%ecx), %ebp + mov 0x10(%ecx), %esp + mov 0x14(%ecx), %edx + jmp *%edx |