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#ifndef _LINUX_CSKY_SYSDEP_H
#define _LINUX_CSKY_SYSDEP_H 1
#include <common/sysdep.h>
#include <sys/syscall.h>
#undef SYS_ify
#define SYS_ify(name) (__NR_##name)
#ifdef __ASSEMBLER__
/* ELF uses byte-counts for .align, most others use log2 of count of bytes. */
#define ALIGNARG(log2) log2
/* For ELF we need the `.type' directive to make shared libs work right. */
#define ASM_TYPE_DIRECTIVE(name,typearg) .type name,%##typearg;
#define ASM_SIZE_DIRECTIVE(name) .size name,.-name
#define ENTRY(name) \
.globl C_SYMBOL_NAME(name); \
ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME(name),function) \
.align ALIGNARG(4); \
C_LABEL(name)
#undef END
#define END(name) ASM_SIZE_DIRECTIVE(name)
#undef ret_ERRVAL
#define ret_ERRVAL rts
#undef PSEUDO_END
#define PSEUDO_END(name) END(name)
#ifdef __PIC__
#define __GET_GB \
bsr 1f; \
1: lrw gb, 1b@GOTPC; \
addu gb, lr;
/*
* __JSR must be used with __GET_GB and SAVE_ARGS
*/
#define __JSR(symbol) \
lrw a2, symbol@PLT; \
add a2, gb; \
ld.w a2, (a2); \
jsr a2;
#define PSEUDO_ERRJMP \
subi sp, 8; \
st.w lr, (sp); \
st.w gb, (sp, 4); \
__GET_GB \
lrw a2, __syscall_error@PLT; \
addu a2, gb; \
ld.w a2, (a2); \
jsr a2; \
ld.w lr, (sp); \
ld.w gb, (sp, 4); \
addi sp, 8; \
rts;
#else /* __PIC__ */
#define __GET_GB
#define __JSR(symbol) jsri symbol;
#define PSEUDO_ERRJMP \
subi sp, 4; \
stw lr, (sp, 0); \
jsri __syscall_error; \
ldw lr, (sp, 0); \
addi sp, 4; \
rts;
#endif /* __PIC__ */
#define PSEUDO_ERRVAL(name, syscall_name, args) \
.text; \
99: PSEUDO_ERRJMP; \
ENTRY(name); \
DO_CALL(syscall_name, args); \
btsti a0, 31; \
bt 99b;
#undef PSEUDO_END_ERRVAL
#define PSEUDO_END_ERRVAL(name) \
rts; \
END(name)
/* DO_CALL */
#undef DO_CALL
#ifdef __CSKYABIV2__
#define DO_CALL(syscall_name, args) \
DOARGS_##args \
mov t0, r7; \
lrw r7, SYS_ify (syscall_name); \
trap 0; \
mov r7, t0; \
UNDOARGS_##args
#define DOARGS_0
#define DOARGS_1
#define DOARGS_2
#define DOARGS_3
#define DOARGS_4
#define DOARGS_5 subi sp, 4; st.w r4, (sp, 0); ld.w r4, (sp, 4);
#define DOARGS_6 subi sp, 8; stm r4-r5, (sp); ld.w r4, (sp, 8); ld.w r5, (sp, 12);
#define UNDOARGS_0
#define UNDOARGS_1
#define UNDOARGS_2
#define UNDOARGS_3
#define UNDOARGS_4
#define UNDOARGS_5 ld.w r4, (sp, 0); addi sp, 4;
#define UNDOARGS_6 ldm r4-r5, (sp); addi sp, 8;
#else /* __CSKYABIV2__ */
#define DO_CALL(syscall_name, args) \
lrw r1, SYS_ify (syscall_name); \
trap 0;
#define DOARGS_0
#define DOARGS_1
#define DOARGS_2
#define DOARGS_3
#define DOARGS_4
#define DOARGS_5
#define DOARGS_6
#define UNDOARGS_0
#define UNDOARGS_1
#define UNDOARGS_2
#define UNDOARGS_3
#define UNDOARGS_4
#define UNDOARGS_5
#define UNDOARGS_6
#endif /* __CSKYABIV2__ */
/*
* define DO_CALL_2, only ABIV2 need DO_CALL_2
* to be quite different with DO_CALL, DO_CALL_2 need not save r7.
*/
#ifdef __CSKYABIV2__
#undef DO_CALL_2
#define DO_CALL_2(syscall_name, args) \
DOARGS2_##args; \
lrw r7, SYS_ify(syscall_name); \
trap 0; \
UNDOARGS2_##args
#undef DOARGS2_0
#define DOARGS2_0
#undef DOARGS2_1
#define DOARGS2_1 DOARGS2_0
#undef DOARGS2_2
#define DOARGS2_2 DOARGS2_0
#undef DOARGS2_3
#define DOARGS2_3 DOARGS2_0
#undef DOARGS2_4
#define DOARGS2_4 DOARGS2_0
#undef DOARGS2_5
#define DOARGS2_5 \
subi sp, 8; \
cfi_adjust_cfa_offset (8); \
stw r4, (sp, 0); \
ldw r4, (sp, 24)
#undef DOARGS2_6
#define DOARGS2_6 \
subi sp, 8; \
cfi_adjust_cfa_offset (8); \
stw r4, (sp, 0); \
stw r5, (sp, 4); \
ldw r4, (sp, 24); \
ldw r5, (sp, 28)
#undef UNDOARGS2_0
#define UNDOARGS2_0
#undef UNDOARGS2_1
#define UNDOARGS2_1 UNDOARGS2_0
#undef UNDOARGS2_2
#define UNDOARGS2_2 UNDOARGS2_0
#undef UNDOARGS2_3
#define UNDOARGS2_3 UNDOARGS2_0
#undef UNDOARGS2_4
#define UNDOARGS2_4 UNDOARGS2_0
#undef UNDOARGS2_5
#define UNDOARGS2_5 \
ldw r4, (sp, 0); \
addi sp, 8
#undef UNDOARGS2_6
#define UNDOARGS2_6 \
ldw r4, (sp, 0); \
ldw r5, (sp, 4); \
addi sp, 8
#endif /* __CSKYABIV2__ */
#endif /* __ASSEMBLER__ */
#endif /* _LINUX_CSKY_SYSDEP_H */
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