new dlstart stage-2 chaining for x86_64 and x32

11 years ago · 12b0b7d8ea
2 changed files with 10 additions and 0 deletions
--- a/arch/x32/reloc.h
+++ b/arch/x32/reloc.h
@ -24,3 +24,8 @@

 #define CRTJMP(pc,sp) __asm__ __volatile__( \
 	"mov %1,%%esp ; jmp *%0" : : "r"((uint64_t)(uintptr_t)pc), "r"(sp) : "memory" )
+
+#define GETFUNCSYM(fp, sym, got) __asm__ ( \
+	".hidden " #sym "\n" \
+	"	lea " #sym "(%%rip),%0\n" \
+	: "=r"(*fp) : : "memory" )
--- a/arch/x86_64/reloc.h
+++ b/arch/x86_64/reloc.h
@ -13,3 +13,8 @@

 #define CRTJMP(pc,sp) __asm__ __volatile__( \
 	"mov %1,%%rsp ; jmp *%0" : : "r"(pc), "r"(sp) : "memory" )
+
+#define GETFUNCSYM(fp, sym, got) __asm__ ( \
+	".hidden " #sym "\n" \
+	"	lea " #sym "(%%rip),%0\n" \
+	: "=r"(*fp) : : "memory" )