Hi, No additional changes in this version. This V2 patch was regenerated on top of `cygwin/main` and applies cleanly as-is, without any additional dependencies.
Thanks,
Thirumalai Nagalingam
In-lined patch:
diff --git a/winsup/cygwin/scripts/gendef b/winsup/cygwin/scripts/gendef
index ab57739fa..adb3ed217 100755
--- a/winsup/cygwin/scripts/gendef
+++ b/winsup/cygwin/scripts/gendef
@@ -423,7 +423,43 @@ _sigfe:
br x9 //
Branch to real function
.seh_endproc
+ .global _sigbe
+ .seh_proc _sigbe
_sigbe:
+ .seh_endprologue
+ ldr x10, [x18, #0x8] // Load TLS base into x10
+ mov w9, #1 // Constant value
1 for lock acquisition
+3: ldr x11, =_cygtls.stacklock // Load offset of stacklock
+ add x12, x10, x11 // Compute final address
of stacklock
+ ldaxr w13, [x12] // Load current
stacklock value atomically
+ stlxr w14, w9, [x12] // Attempt to set
stacklock atomically
+ cbnz w14, 3b // Retry if failed
+ cbz w13, 4f // If lock was
free, continue
+ yield
+ b 3b // Retry
acquiring the lock
+4:
+ mov x9, #-8 // Set stack
pointer decrement value
+5: ldr x11, =_cygtls.stackptr // Load offset of stack pointer
+ add x12, x10, x11 // Compute final address
of stack pointer
+ ldaxr x13, [x12] // Load current
stack pointer atomically
+ add x14, x13, x9 // Compute new stack
pointer value
+ stlxr w15, x14, [x12] // Attempt to update stack
pointer atomically
+ cbnz w15, 5b // Retry if atomic
update failed
+ sub x13, x13, #8 // Compute address where LR was saved
+ ldr x30, [x13] // Restore saved LR
+ ldr x11, =_cygtls.incyg // Load offset of incyg
+ add x12, x10, x11 // Compute final address
of incyg
+ ldr w9, [x12] // Load current
incyg value
+ sub w9, w9, #1 // Decrement incyg
+ str w9, [x12] // Store updated
incyg value
+ ldr x11, =_cygtls.stacklock // Load offset of stacklock
+ add x12, x10, x11 // Compute final address
of stacklock
+ ldr w9, [x12] // Load current
stacklock value
+ sub w9, w9, #1 // Decrement stacklock
(release lock)
+ stlr w9, [x12] // Store stacklock
+ ret // Return to caller
using restored LR
+ .seh_endproc
+
.global sigdelayed
sigdelayed:
_sigdelayed_end:
--
2.52.0.windows.1
0004-Cygwin-gendef-Implement-_sigbe-function-for-TLS-stac.patch
Description: 0004-Cygwin-gendef-Implement-_sigbe-function-for-TLS-stac.patch
