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While doing some easy cleanups on the sparc code I noticed that the CONFIG_SUN4 code seems to be worse than the rest - there were some "I don't know how it should work, but the current code definitely cannot work." places. And while I have seen people running Linux on machines like a SPARCstation 5 a few years ago I don't recall having seen sun4 machines, even less ones running Linux. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
41 lines
977 B
C
41 lines
977 B
C
/* asmmacro.h: Assembler macros.
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*
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* Copyright (C) 1996 David S. Miller (davem@caipfs.rutgers.edu)
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*/
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#ifndef _SPARC_ASMMACRO_H
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#define _SPARC_ASMMACRO_H
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#include <asm/btfixup.h>
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#include <asm/asi.h>
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#define GET_PROCESSOR4M_ID(reg) \
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rd %tbr, %reg; \
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srl %reg, 12, %reg; \
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and %reg, 3, %reg;
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#define GET_PROCESSOR4D_ID(reg) \
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lda [%g0] ASI_M_VIKING_TMP1, %reg;
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/* All trap entry points _must_ begin with this macro or else you
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* lose. It makes sure the kernel has a proper window so that
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* c-code can be called.
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*/
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#define SAVE_ALL_HEAD \
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sethi %hi(trap_setup), %l4; \
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jmpl %l4 + %lo(trap_setup), %l6;
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#define SAVE_ALL \
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SAVE_ALL_HEAD \
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nop;
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/* All traps low-level code here must end with this macro. */
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#define RESTORE_ALL b ret_trap_entry; clr %l6;
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/* sun4 probably wants half word accesses to ASI_SEGMAP, while sun4c+
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likes byte accesses. These are to avoid ifdef mania. */
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#define lduXa lduba
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#define stXa stba
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#endif /* !(_SPARC_ASMMACRO_H) */
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