Allow MAP_POPULATE under pledge()

libc/calls/pledge-linux.c

@@ -1644,7 +1644,7 @@ static privileged void AllowMmapNoexec(struct Filter *f) {
       /*L2*/ BPF_STMT(BPF_ALU | BPF_AND | BPF_K, ~(PROT_READ | PROT_WRITE)),
       /*L3*/ BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, 0, 8 - 4),
       /*L4*/ BPF_STMT(BPF_LD | BPF_W | BPF_ABS, OFF(args[3])),  // flags
-      /*L5*/ BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x5a000),
+      /*L5*/ BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x52000),
       /*L6*/ BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, 0, 1),
       /*L7*/ BPF_STMT(BPF_RET | BPF_K, SECCOMP_RET_ALLOW),
       /*L8*/ BPF_STMT(BPF_LD | BPF_W | BPF_ABS, OFF(nr)),

libc/dlopen/BUILD.mk

@@ -8,16 +8,8 @@ LIBC_DLOPEN = $(LIBC_DLOPEN_A_DEPS) $(LIBC_DLOPEN_A)
 LIBC_DLOPEN_A = o/$(MODE)/libc/dlopen/dlopen.a
 LIBC_DLOPEN_A_FILES := $(wildcard libc/dlopen/*)
 LIBC_DLOPEN_A_HDRS = $(filter %.h,$(LIBC_DLOPEN_A_FILES))
-LIBC_DLOPEN_A_SRCS_S = $(filter %.S,$(LIBC_DLOPEN_A_FILES))
-LIBC_DLOPEN_A_SRCS_C = $(filter %.c,$(LIBC_DLOPEN_A_FILES))
-
-LIBC_DLOPEN_A_SRCS =							\
-	$(LIBC_DLOPEN_A_SRCS_S)						\
-	$(LIBC_DLOPEN_A_SRCS_C)
-
-LIBC_DLOPEN_A_OBJS =							\
-	$(LIBC_DLOPEN_A_SRCS_S:%.S=o/$(MODE)/%.o)			\
-	$(LIBC_DLOPEN_A_SRCS_C:%.c=o/$(MODE)/%.o)
+LIBC_DLOPEN_A_SRCS = $(filter %.c,$(LIBC_DLOPEN_A_FILES))
+LIBC_DLOPEN_A_OBJS = $(LIBC_DLOPEN_A_SRCS:%.c=o/$(MODE)/%.o)
 
 LIBC_DLOPEN_A_CHECKS =							\
 	$(LIBC_DLOPEN_A).pkg						\

libc/nexgen32e/nt2sysv.S

@@ -32,8 +32,6 @@
 __nt2sysv:
 	push	%rbp
 	mov	%rsp,%rbp
-//	TODO(jart): We should probably find some way to use our own
-//	            stack when Windows delivers signals ;_;
 	sub	$256,%rsp
 	push	%rbx
 	push	%rdi