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Improve crash signal reporting on Windows

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This change fixes a bug where exiting a crash signal handler on Windows
after adding the signal to uc_sigmask, but not correcting the CPU state
would cause the signal handler to loop infinitely, causing process hang

Another issue is that very tiny programs, that don't link posix signals
would not have their SIGILL / SIGSEGV / etc. status reported to Cosmo's
bash shell when terminating on crash. That's fixed by a tiny handler in
WinMain() that knows how to map WIN32 crash codes to the POSIX flavors.
This commit is contained in:
Justine Tunney 2024-05-30 13:42:59 -07:00
parent 500a47bc2f
commit cd672e251f
No known key found for this signature in database
GPG key ID: BE714B4575D6E328
7 changed files with 169 additions and 88 deletions
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22
build/config.mk
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@ -11,20 +11,20 @@
#
ifeq ($(MODE),)
ENABLE_FTRACE = 1
CONFIG_OFLAGS ?= -g
CONFIG_OFLAGS ?= -g -ggdb
CONFIG_CCFLAGS += -O2 $(BACKTRACES)
CONFIG_CPPFLAGS += -DSYSDEBUG
TARGET_ARCH ?= -msse3
endif
ifeq ($(MODE), x86_64)
ENABLE_FTRACE = 1
CONFIG_OFLAGS ?= -g
CONFIG_OFLAGS ?= -g -ggdb
CONFIG_CCFLAGS += -O2 $(BACKTRACES)
CONFIG_CPPFLAGS += -DSYSDEBUG
endif
ifeq ($(MODE), aarch64)
ENABLE_FTRACE = 1
CONFIG_OFLAGS ?= -g
CONFIG_OFLAGS ?= -g -ggdb
CONFIG_CCFLAGS += -O2 $(BACKTRACES)
CONFIG_CPPFLAGS += -DSYSDEBUG
endif
@ -38,13 +38,13 @@ endif
#
ifeq ($(MODE), zero)
ENABLE_FTRACE = 1
CONFIG_OFLAGS ?= -g
CONFIG_OFLAGS ?= -g -ggdb
OVERRIDE_CFLAGS += -O0
OVERRIDE_CXXFLAGS += -O0
CONFIG_CPPFLAGS += -DSYSDEBUG
endif
ifeq ($(MODE), aarch64-zero)
CONFIG_OFLAGS ?= -g
CONFIG_OFLAGS ?= -g -ggdb
OVERRIDE_CFLAGS += -O0 -fdce
OVERRIDE_CXXFLAGS += -O0 -fdce
CONFIG_CPPFLAGS += -DSYSDEBUG
@ -81,7 +81,7 @@ endif
#
ifeq ($(MODE), opt)
ENABLE_FTRACE = 1
CONFIG_OFLAGS ?= -g
CONFIG_OFLAGS ?= -g -ggdb
CONFIG_CPPFLAGS += -DNDEBUG -DSYSDEBUG
CONFIG_CCFLAGS += $(BACKTRACES) -O3 -fmerge-all-constants
TARGET_ARCH ?= -march=native
@ -98,7 +98,7 @@ endif
# - Turns off support for other operating systems
#
ifeq ($(MODE), optlinux)
CONFIG_OFLAGS ?= -g
CONFIG_OFLAGS ?= -g -ggdb
CONFIG_CPPFLAGS += -DNDEBUG -DSYSDEBUG -DSUPPORT_VECTOR=1
CONFIG_CCFLAGS += -O3 -fmerge-all-constants
CONFIG_COPTS += -mred-zone
@ -140,7 +140,7 @@ endif
#
ifeq ($(MODE), asan)
ENABLE_FTRACE = 1
CONFIG_OFLAGS ?= -g
CONFIG_OFLAGS ?= -g -ggdb
CONFIG_CPPFLAGS += -D__SANITIZE_ADDRESS__
CONFIG_CCFLAGS += $(BACKTRACES) -O2 -DSYSDEBUG
CONFIG_COPTS += -fsanitize=address
@ -160,7 +160,7 @@ endif
#
ifeq ($(MODE), dbg)
ENABLE_FTRACE = 1
CONFIG_OFLAGS ?= -g
CONFIG_OFLAGS ?= -g -ggdb
CONFIG_CPPFLAGS += -DMODE_DBG -D__SANITIZE_ADDRESS__ -D__SANITIZE_UNDEFINED__
CONFIG_CCFLAGS += $(BACKTRACES) -DSYSDEBUG -O0 -fno-inline
CONFIG_COPTS += -fsanitize=address -fsanitize=undefined
@ -170,7 +170,7 @@ QUOTA ?= -C64 -L300
endif
ifeq ($(MODE), aarch64-dbg)
ENABLE_FTRACE = 1
CONFIG_OFLAGS ?= -g
CONFIG_OFLAGS ?= -g -ggdb
CONFIG_CPPFLAGS += -DMODE_DBG -D__SANITIZE_UNDEFINED__
CONFIG_CCFLAGS += $(BACKTRACES) -DSYSDEBUG -O0 -fno-inline -fdce
CONFIG_COPTS += -fsanitize=undefined
@ -189,7 +189,7 @@ endif
#
ifeq ($(MODE), sysv)
ENABLE_FTRACE = 1
CONFIG_OFLAGS ?= -g
CONFIG_OFLAGS ?= -g -ggdb
CONFIG_CCFLAGS += $(BACKTRACES) -O2
CONFIG_CPPFLAGS += -DSYSDEBUG -DSUPPORT_VECTOR=121
TARGET_ARCH ?= -msse3