diff options
| author | grischka <grischka> | 2009-12-19 22:40:28 +0100 |
|---|---|---|
| committer | grischka <grischka> | 2009-12-20 01:54:37 +0100 |
| commit | 50b040ef83252730d75463bdeea589294e698532 (patch) | |
| tree | 92e82f58787576e018858939f97361b486d6bb6f /win32/lib/chkstk.S | |
| parent | 88a3ccab9f3c877e2ffb8fecc3303006e0640907 (diff) | |
| download | tinycc-50b040ef83252730d75463bdeea589294e698532.tar.gz tinycc-50b040ef83252730d75463bdeea589294e698532.tar.bz2 | |
win64: add tiny unwind data for setjmp/longjmp
This enables native unwind semantics with longjmp on
win64 by putting an entry into the .pdata section for
each compiled fuction.
Also, the function now use a fixed stack and store arguments
into X(%rsp) rather than using push.
Diffstat (limited to 'win32/lib/chkstk.S')
| -rw-r--r-- | win32/lib/chkstk.S | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/win32/lib/chkstk.S b/win32/lib/chkstk.S index 90a6f0d..a757b16 100644 --- a/win32/lib/chkstk.S +++ b/win32/lib/chkstk.S @@ -57,11 +57,19 @@ P0: jmp *8(%rax) /* ---------------------------------------------- */ -/* avoid msvcrt unwind stuff for setjmp/longjmp */ +/* setjmp/longjmp support */ -.globl tinyc_getsp -tinyc_getsp: +.globl tinyc_no_getbp +tinyc_no_getbp: + .byte 0x90 + +.globl tinyc_getbp +tinyc_getbp: xor %rax,%rax + cmp %al,tinyc_no_getbp(%rax) + je t1 + mov %rbp,%rax +t1: ret /* ---------------------------------------------- */ |