Merge branch 'master' of git://git.etalabs.net/musl

src/ldso/dynlink.c

@@ -1,4 +1,3 @@
-#ifdef __PIC__
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -18,6 +17,10 @@
 #include <ctype.h>
 #include <dlfcn.h>
 
+static int errflag;
+
+#ifdef __PIC__
+
 #include "reloc.h"
 
 #if ULONG_MAX == 0xffffffff
@@ -631,12 +634,13 @@ void *dlopen(const char *file, int mode)
 		tail = orig_tail;
 		tail->next = 0;
 		p = 0;
+	} else p = load_library(file);
+
+	if (!p) {
+		errflag = 1;
 		goto end;
 	}
 
-	p = load_library(file);
-	if (!p) goto end;
-
 	/* First load handling */
 	if (!p->deps) {
 		load_deps(p);
@@ -674,8 +678,11 @@ static void *do_dlsym(struct dso *p, const char *s, void *ra)
 		if (!p) p=head;
 		p=p->next;
 	}
-	if (p == head || p == RTLD_DEFAULT)
+	if (p == head || p == RTLD_DEFAULT) {
-		return find_sym(head, s, 0);
+		void *res = find_sym(head, s, 0);
+		if (!res) errflag = 1;
+		return res;
+	}
 	h = hash(s);
 	sym = lookup(s, h, p->syms, p->hashtab, p->strings);
 	if (sym && sym->st_value && (1<<(sym->st_info&0xf) & OK_TYPES))
@@ -686,6 +693,7 @@ static void *do_dlsym(struct dso *p, const char *s, void *ra)
 		if (sym && sym->st_value && (1<<(sym->st_info&0xf) & OK_TYPES))
 			return p->deps[i]->base + sym->st_value;
 	}
+	errflag = 1;
 	return 0;
 }
 
@@ -710,6 +718,8 @@ void *__dlsym(void *p, const char *s, void *ra)
 
 char *dlerror()
 {
+	if (!errflag) return 0;
+	errflag = 0;
 	return "unknown error";
 }
 

src/math/i386/hypot.s

@@ -0,0 +1,45 @@
+.global hypot
+.type hypot,@function
+hypot:
+	mov 8(%esp),%eax
+	mov 16(%esp),%ecx
+	add %eax,%eax
+	add %ecx,%ecx
+	and %eax,%ecx
+	cmp $0xffe00000,%ecx
+	jae 2f
+	or 4(%esp),%eax
+	jnz 1f
+	fldl 12(%esp)
+	fabs
+	ret
+1:	mov 16(%esp),%eax
+	add %eax,%eax
+	or 12(%esp),%eax
+	jnz 1f
+	fldl 4(%esp)
+	fabs
+	ret
+1:	fldl 4(%esp)
+	fld %st(0)
+	fmulp
+	fldl 12(%esp)
+	fld %st(0)
+	fmulp
+	faddp
+	fsqrt
+	ret
+2:	sub $0xffe00000,%eax
+	or 4(%esp),%eax
+	jnz 1f
+	fldl 4(%esp)
+	fabs
+	ret
+1:	mov 16(%esp),%eax
+	add %eax,%eax
+	sub $0xffe00000,%eax
+	or 12(%esp),%eax
+	fldl 12(%esp)
+	jnz 1f
+	fabs
+1:	ret

src/math/i386/hypotf.s

@@ -0,0 +1,42 @@
+.global hypotf
+.type hypotf,@function
+hypotf:
+	mov 4(%esp),%eax
+	mov 8(%esp),%ecx
+	add %eax,%eax
+	add %ecx,%ecx
+	and %eax,%ecx
+	cmp $0xff000000,%ecx
+	jae 2f
+	test %eax,%eax
+	jnz 1f
+	flds 8(%esp)
+	fabs
+	ret
+1:	mov 8(%esp),%eax
+	add %eax,%eax
+	jnz 1f
+	flds 4(%esp)
+	fabs
+	ret
+1:	flds 4(%esp)
+	fld %st(0)
+	fmulp
+	flds 8(%esp)
+	fld %st(0)
+	fmulp
+	faddp
+	fsqrt
+	ret
+2:	cmp $0xff000000,%eax
+	jnz 1f
+	flds 4(%esp)
+	fabs
+	ret
+1:	mov 8(%esp),%eax
+	add %eax,%eax
+	cmp $0xff000000,%eax
+	flds 8(%esp)
+	jnz 1f
+	fabs
+1:	ret