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Diffstat (limited to 'libc/sysdeps/linux/xtensa/sysdep.h')
-rw-r--r--libc/sysdeps/linux/xtensa/sysdep.h55
1 files changed, 50 insertions, 5 deletions
diff --git a/libc/sysdeps/linux/xtensa/sysdep.h b/libc/sysdeps/linux/xtensa/sysdep.h
index 0671f0783..d05741027 100644
--- a/libc/sysdeps/linux/xtensa/sysdep.h
+++ b/libc/sysdeps/linux/xtensa/sysdep.h
@@ -39,12 +39,15 @@
#endif
-#define ENTRY(name) \
+#define ENTRY_PREFIX(name) \
.globl C_SYMBOL_NAME(name); \
ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME(name), @function); \
.align ALIGNARG(2); \
LITERAL_POSITION; \
- C_LABEL(name) \
+ C_LABEL(name)
+
+#define ENTRY(name) \
+ ENTRY_PREFIX(name) \
abi_entry(sp, FRAMESIZE);
#define HIDDEN_ENTRY(name) \
@@ -72,13 +75,27 @@
#define LITERAL_POSITION .literal_position
#undef JUMPTARGET
-#ifdef __PIC__
+#if defined(__FDPIC__)
+#define JUMPTARGET(name) name##@GOTOFFFUNCDESC
+#define FDPIC_LOAD_FUNCDESC(call_target, funcdesc) \
+ l32i a11, funcdesc, 4; \
+ l32i call_target, funcdesc, 0
+
+#define FDPIC_LOAD_JUMPTARGET(call_target, got_base, jumptarget)\
+ add call_target, got_base, jumptarget; \
+ FDPIC_LOAD_FUNCDESC(call_target, call_target)
+
+#elif defined(__PIC__)
/* The "@PLT" suffix is currently a no-op for non-shared linking, but
it doesn't hurt to use it conditionally for PIC code in case that
changes someday. */
#define JUMPTARGET(name) name##@PLT
+#define FDPIC_LOAD_FUNCDESC(call_target, funcdesc)
+#define FDPIC_LOAD_JUMPTARGET(call_target, got_base, jumptarget)
#else
#define JUMPTARGET(name) name
+#define FDPIC_LOAD_FUNCDESC(call_target, funcdesc)
+#define FDPIC_LOAD_JUMPTARGET(call_target, got_base, jumptarget)
#endif
#ifndef FRAMESIZE
@@ -150,6 +167,21 @@
#if defined _LIBC_REENTRANT
# if defined USE___THREAD
+#ifdef __FDPIC__
+# define SYSCALL_ERROR_ERRNO errno
+# define SYSCALL_ERROR_HANDLER \
+0: rur a4, THREADPTR; \
+ movi a3, SYSCALL_ERROR_ERRNO@GOTTPOFF; \
+ .reloc ., R_XTENSA_TLS_TPOFF_PTR, SYSCALL_ERROR_ERRNO; \
+ add a3, a3, a11; \
+ .reloc ., R_XTENSA_TLS_TPOFF_LOAD, SYSCALL_ERROR_ERRNO; \
+ l32i a3, a3, 0; \
+ neg a2, a2; \
+ add a4, a4, a3; \
+ s32i a2, a4, 0; \
+ movi a2, -1; \
+ j .Lpseudo_end;
+#else
# define SYSCALL_ERROR_ERRNO errno
# define SYSCALL_ERROR_HANDLER \
0: rur a4, THREADPTR; \
@@ -159,13 +191,14 @@
s32i a2, a4, 0; \
movi a2, -1; \
j .Lpseudo_end;
+#endif
# else /* !USE___THREAD */
#if defined(__XTENSA_WINDOWED_ABI__)
# define SYSCALL_ERROR_HANDLER \
0: neg a2, a2; \
mov a6, a2; \
- movi a4, __errno_location@PLT; \
+ movi a4, JUMPTARGET(__errno_location); \
callx4 a4; \
s32i a2, a6, 0; \
movi a2, -1; \
@@ -176,7 +209,8 @@
addi a1, a1, -16; \
s32i a0, a1, 0; \
s32i a2, a1, 4; \
- movi a0, __errno_location@PLT; \
+ movi a0, JUMPTARGET(__errno_location); \
+ FDPIC_LOAD_JUMPTARGET(a0, a11, a0); \
callx0 a0; \
l32i a0, a1, 0; \
l32i a3, a1, 4; \
@@ -190,12 +224,23 @@
# endif /* !USE___THREAD */
#else /* !_LIBC_REENTRANT */
+#ifdef __FDPIC__
+#define SYSCALL_ERROR_HANDLER \
+0: movi a4, errno@GOT; \
+ add a4, a4, a11; \
+ l32i a4, a4, 0; \
+ neg a2, a2; \
+ s32i a2, a4, 0; \
+ movi a2, -1; \
+ j .Lpseudo_end;
+#else
#define SYSCALL_ERROR_HANDLER \
0: movi a4, errno; \
neg a2, a2; \
s32i a2, a4, 0; \
movi a2, -1; \
j .Lpseudo_end;
+#endif /* __FDPIC__ */
#endif /* _LIBC_REENTRANT */
#endif /* __ASSEMBLER__ */