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Diffstat (limited to 'libc/sysdeps/linux/nds32/sysdep.h')
-rw-r--r--libc/sysdeps/linux/nds32/sysdep.h271
1 files changed, 271 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/nds32/sysdep.h b/libc/sysdeps/linux/nds32/sysdep.h
new file mode 100644
index 000000000..7472a99d4
--- /dev/null
+++ b/libc/sysdeps/linux/nds32/sysdep.h
@@ -0,0 +1,271 @@
+//#include <sysdeps/generic/sysdep.h>
+#ifdef __ASSEMBLER__
+/* Define an entry point visible from C. */
+#ifdef PIC
+#define ENTRY(name) \
+ .pic \
+ .align 2; \
+ .globl C_SYMBOL_NAME(name); \
+ .func C_SYMBOL_NAME(name); \
+ .type C_SYMBOL_NAME(name), @function; \
+C_SYMBOL_NAME(name):
+#else
+#define ENTRY(name) \
+ .align 2; \
+ .globl C_SYMBOL_NAME(name); \
+ .func C_SYMBOL_NAME(name); \
+ .type C_SYMBOL_NAME(name), @function; \
+C_SYMBOL_NAME(name):
+#endif
+
+#undef END
+#define END(name) \
+ .endfunc; \
+ .size C_SYMBOL_NAME(name), .-C_SYMBOL_NAME(name)
+
+/* If compiled for profiling, call `mcount' at the start of each function. */
+#ifdef HAVE_ELF
+ #undef NO_UNDERSCORES
+ #define NO_UNDERSCORES
+#endif
+
+#ifdef NO_UNDERSCORES
+ #define syscall_error __syscall_error
+#endif
+
+#define SYS_ify(syscall_name) (__NR_##syscall_name)
+
+#define __do_syscall(syscall_name) \
+ syscall SYS_ify(syscall_name);
+
+#define SYSCALL_ERROR_HANDLER
+#define SYSCALL_ERROR __syscall_error
+
+
+#ifdef PIC
+#ifdef __NDS32_N1213_43U1H__
+#ifdef NDS_ABI_V0
+#define PSEUDO(name, syscall_name, args) \
+ .pic; \
+ .align 2; \
+ 1: ret; \
+ 99: addi $r0, $lp, 0; \
+ jal 1b; \
+ sethi $r1, hi20(_GLOBAL_OFFSET_TABLE_); \
+ ori $r1, $r1, lo12(_GLOBAL_OFFSET_TABLE_+4); \
+ add $r1, $lp, $r1; \
+ addi $lp, $r0, 0; \
+ sethi $r15, hi20(SYSCALL_ERROR@PLT); \
+ ori $r15, $r15, lo12(SYSCALL_ERROR@PLT); \
+ add $r15, $r15, $r1; \
+ jr $r15; \
+ nop; \
+ ENTRY(name); \
+ __do_syscall(syscall_name); \
+ bgez $r5, 2f; \
+ sltsi $r0, $r5, -4096; \
+ beqz $r0, 99b; \
+ 2:
+#else
+#define PSEUDO(name, syscall_name, args) \
+ .pic; \
+ .align 2; \
+ 1: ret; \
+ 99: addi $r2, $lp, 0; \
+ jal 1b; \
+ sethi $r1, hi20(_GLOBAL_OFFSET_TABLE_); \
+ ori $r1, $r1, lo12(_GLOBAL_OFFSET_TABLE_+4); \
+ add $r1, $lp, $r1; \
+ addi $lp, $r2, 0; \
+ sethi $r15, hi20(SYSCALL_ERROR@PLT); \
+ ori $r15, $r15, lo12(SYSCALL_ERROR@PLT); \
+ add $r15, $r15, $r1; \
+ jr $r15; \
+ nop; \
+ ENTRY(name); \
+ __do_syscall(syscall_name); \
+ bgez $r0, 2f; \
+ sltsi $r1, $r0, -4096; \
+ beqz $r1, 99b; \
+ 2:
+#endif
+#else
+#define PSEUDO(name, syscall_name, args) \
+ .pic; \
+ .align 2; \
+ 99: mfusr $r15, $PC; \
+ sethi $r1, hi20(_GLOBAL_OFFSET_TABLE_ + 4); \
+ ori $r1, $r1, lo12(_GLOBAL_OFFSET_TABLE_ + 8); \
+ add $r1, $r15, $r1; \
+ sethi $r15, hi20(SYSCALL_ERROR@PLT); \
+ ori $r15, $r15, lo12(SYSCALL_ERROR@PLT); \
+ add $r15, $r15, $r1; \
+ jr $r15; \
+ nop; \
+ ENTRY(name); \
+ __do_syscall(syscall_name); \
+ bgez $r0, 2f; \
+ sltsi $r1, $r0, -4096; \
+ beqz $r1, 99b; \
+ 2:
+#endif
+#else
+#ifdef OLD2_ABI
+#define PSEUDO(name, syscall_name, args) \
+ .align 2; \
+ 99: j SYSCALL_ERROR; \
+ nop; \
+ ENTRY(name); \
+ __do_syscall(syscall_name); \
+ bgez $r5, 2f; \
+ sltsi $r0, $r5, -4096; \
+ beqz $r0, 99b; \
+ 2:
+#else
+#define PSEUDO(name, syscall_name, args) \
+ .align 2; \
+ 99: j SYSCALL_ERROR; \
+ nop; \
+ ENTRY(name); \
+ __do_syscall(syscall_name); \
+ bgez $r0, 2f; \
+ sltsi $r1, $r0, -4096; \
+ beqz $r1, 99b; \
+ 2:
+#endif
+#endif
+
+
+#define PSEUDO_NOERRNO(name, syscall_name, args) \
+ ENTRY(name); \
+ __do_syscall(syscall_name);
+
+#undef PSEUDO_END
+#define PSEUDO_END(sym) \
+ SYSCALL_ERROR_HANDLER \
+ END(sym)
+
+#undef PSEUDO_END_ERRVAL
+#define PSEUDO_END_ERRVAL(sym) END(sym)
+
+#define PSEUDO_ERRVAL(name, syscall_name, args) PSEUDO_NOERRNO(name, syscall_name, args)
+
+#define ret_ERRVAL ret
+
+#define ret_NOERRNO ret
+#if defined NOT_IN_libc
+ #define SYSCALL_ERROR __local_syscall_error
+ #ifdef PIC
+ #ifdef __NDS32_N1213_43U1H__
+ #ifdef NDS_ABI_V0
+ #define SYSCALL_ERROR_HANDLER \
+ __local_syscall_error: pushm $gp, $lp, $sp; \
+ jal 1f; \
+ sethi $gp, hi20(_GLOBAL_OFFSET_TABLE_); \
+ ori $gp, $gp, lo12(_GLOBAL_OFFSET_TABLE_+4); \
+ add $gp, $gp, $lp; \
+ neg $r5, $r5; \
+ push $r5; \
+ addi $sp, $sp, -28; \
+ bal C_SYMBOL_NAME(__errno_location@PLT); \
+ addi $sp, $sp, 28; \
+ pop $r1; \
+ swi $r1, [$r5]; \
+ li $r5, -1; \
+ popm $gp, $lp, $sp; \
+ 1: ret;
+ #else
+ #define SYSCALL_ERROR_HANDLER \
+ __local_syscall_error: pushm $gp, $lp, $sp; \
+ jal 1f; \
+ sethi $gp, hi20(_GLOBAL_OFFSET_TABLE_); \
+ ori $gp, $gp, lo12(_GLOBAL_OFFSET_TABLE_+4); \
+ add $gp, $gp, $lp; \
+ neg $r0, $r0; \
+ push $r0; \
+ #if defined(NDS32_ABI_2) || defined(NDS32_ABI_2FP) \
+ addi $sp, $sp, -4; \
+ #else \
+ addi $sp, $sp, -28; \
+ #endif \
+ bal C_SYMBOL_NAME(__errno_location@PLT); \
+ #if defined(NDS32_ABI_2) || defined(NDS32_ABI_2FP) \
+ addi $sp, $sp, 4; \
+ #else \
+ addi $sp, $sp, 28; \
+ #endif \
+ pop $r1; \
+ swi $r1, [$r0]; \
+ li $r0, -1; \
+ popm $gp, $lp, $sp; \
+ 1: ret;
+ #endif
+ #else
+ #define SYSCALL_ERROR_HANDLER \
+ __local_syscall_error: pushm $gp, $lp, $sp; \
+ mfusr $r15, $PC; \
+ sethi $gp, hi20(_GLOBAL_OFFSET_TABLE_+4); \
+ ori $gp, $gp, lo12(_GLOBAL_OFFSET_TABLE_+8); \
+ add $gp, $gp, $r15; \
+ neg $r0, $r0; \
+ push $r0; \
+ #if defined(NDS32_ABI_2) || defined(NDS32_ABI_2FP) \
+ addi $sp, $sp, -4; \
+ #else \
+ addi $sp, $sp, -28; \
+ #endif \
+ bal C_SYMBOL_NAME(__errno_location@PLT); \
+ #if defined(NDS32_ABI_2) || defined(NDS32_ABI_2FP) \
+ addi $sp, $sp, 4; \
+ #else \
+ addi $sp, $sp, 28; \
+ #endif \
+ pop $r1; \
+ swi $r1, [$r0]; \
+ li $r0, -1; \
+ popm $gp, $lp, $sp; \
+ 1: ret;
+ #endif
+ #else
+ #ifdef NDS_ABI_V0
+ #define SYSCALL_ERROR_HANDLER \
+ __local_syscall_error: push $lp; \
+ neg $r5, $r5; \
+ push $r5; \
+ addi $sp, $sp, -28; \
+ bal C_SYMBOL_NAME(__errno_location); \
+ addi $sp, $sp, 28; \
+ pop $r1; \
+ swi $r1, [$r5]; \
+ li $r5, -1; \
+ pop $lp; \
+ ret;
+ #else
+ #define SYSCALL_ERROR_HANDLER \
+ __local_syscall_error: push $lp; \
+ neg $r0, $r0; \
+ push $r0; \
+ #if defined(NDS32_ABI_2) || defined(NDS32_ABI_2FP) \
+ addi $sp, $sp, -4; \
+ #else \
+ addi $sp, $sp, -28; \
+ #endif \
+ bal C_SYMBOL_NAME(__errno_location); \
+ #if defined(NDS32_ABI_2) || defined(NDS32_ABI_2FP) \
+ addi $sp, $sp, 4; \
+ #else \
+ addi $sp, $sp, 28; \
+ #endif \
+ pop $r1; \
+ swi $r1, [$r0]; \
+ li $r0, -1; \
+ pop $lp; \
+ ret;
+ #endif
+ #endif
+
+#else
+ #define SYSCALL_ERROR_HANDLER
+ #define SYSCALL_ERROR __syscall_error
+#endif
+#endif /* __ASSEMBLER__ */
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