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Diffstat (limited to 'libgloss/sparc/slite.h')
| -rw-r--r-- | libgloss/sparc/slite.h | 127 |
1 files changed, 0 insertions, 127 deletions
diff --git a/libgloss/sparc/slite.h b/libgloss/sparc/slite.h deleted file mode 100644 index 4762e3f..0000000 --- a/libgloss/sparc/slite.h +++ /dev/null @@ -1,127 +0,0 @@ -/* - * Copyright (c) 1995, 1996 Cygnus Support - * - * The authors hereby grant permission to use, copy, modify, distribute, - * and license this software and its documentation for any purpose, provided - * that existing copyright notices are retained in all copies and that this - * notice is included verbatim in any distributions. No written agreement, - * license, or royalty fee is required for any of the authorized uses. - * Modifications to this software may be copyrighted by their authors - * and need not follow the licensing terms described here, provided that - * the new terms are clearly indicated on the first page of each file where - * they apply. - */ - -#define STACK_SIZE 16 * 1024 -#define TRAP_STACK_SIZE 4 * 1024 -#define NUM_REGS 20 - -#ifdef SL933 -#define NUMBER_OF_REGISTER_WINDOWS 6 -#else -#define NUMBER_OF_REGISTER_WINDOWS 8 -#endif - -#if (NUMBER_OF_REGISTER_WINDOWS == 8) -#define SPARC_PSR_CWP_MASK 0x07 /* bits 0 - 4 */ -#elif (NUMBER_OF_REGISTER_WINDOWS == 16) -#define SPARC_PSR_CWP_MASK 0x0F /* bits 0 - 4 */ -#elif (NUMBER_OF_REGISTER_WINDOWS == 32) -#define SPARC_PSR_CWP_MASK 0x1F /* bits 0 - 4 */ -#else -#error "Unsupported number of register windows for this cpu" -#endif - -/* The traptable has to be the first code in a boot PROM. */ - -/* - * Entry for traps which jump to a programmer-specified trap handler. - */ - -#define TRAP(_handler) \ - sethi %hi(_handler), %l3 ; \ - jmpl %l3+%lo(_handler), %g0 ; \ - mov %wim, %l0 ; \ - nop - -/* Unexcpected trap will halt the processor by forcing it to error state */ -#if 1 -#define BAD_TRAP ta 0; nop; nop; nop; -#else -#define BAD_TRAP \ - mov %psr, l0 ; \ - mov 0x0, %o0 ; \ - sethi %hi(SYM(bad_trap)), l4 ; \ - jmp l4+%lo(SYM(bad_trap)); -#endif - -/* Software trap. Treat as BAD_TRAP for the time being... */ -#if 1 -#define SOFT_TRAP BAD_TRAP -#else -#define SOFT_TRAP \ - mov $psr, $l0 ; \ - mov 0x0, $o0 ; \ - sethi $hi(SYM(soft_trap)), l4 ; \ - jmp l4+$lo(SYM(soft_trap)); -#endif - -#define PSR_INIT 0x10c0 /* Disable traps, set s and ps */ -#define TBR_INIT 0 -#define WIM_INIT 2 -#define SP_INIT 0x023ffff0 - -/* Macros for reading and writing to arbitrary address spaces. Note that ASI - must be a constant (sorry, but the SPARC can only specify ASIs as part of an - instruction. */ - -#define read_asi(ASI, LOC) \ - ({ \ - unsigned int val; \ - __asm__ volatile ("lda [%r1]%2,%0" : "=r" (val) : "rJ" (LOC), "I" (ASI)); \ - val; \ - }) - -#define write_asi(ASI, LOC, VAL) \ - __asm__ volatile ("sta %0,[%r1]%2" : : "r" (VAL), "rJ" (LOC), "I" (ASI)); - -/* - * Use this when modifying registers that cause memory to be modified. This - * will cause GCC to reload all values after this point. - */ -#define write_asi_volatile(ASI, LOC, VAL) \ - __asm__ volatile ("sta %0,[%r1]%2" : : "r" (VAL), "rJ" (LOC), "I" (ASI) \ - : "memory"); - -#define WRITE_PC(x) registers[PC] = x; registers[NPC] = x + 4; - -/* - * Processor Status Register (psr) - * - * 31 28|27 24|23 20|19 12|11 9|7|6|5|4 0 - * +------+-------+-------+-------+------+-+-+-+--------+ - * | impl | ver | icc | res. | pil | | | | cwp | - * +------+-------+-------+-------+------+-+-+-+--------+ - * S P E - * S T - * if ET = 1, traps are enabled, 0 means disabled. - * if S = 1, you're in supervisor mode, 0 means user mode. - * cwp points to the current window. - * - * Trap Base Register (tbr) - * - * 31 12|11 4|3 0 - * +--------------+--------------+------+ - * | tba | tt | null | - * +--------------+--------------+------+ - * - * tba contains the most sig. 20 bits of the tbr base address - * tt is the trap number. - * - * Window Invalid Register (wim) - * 31 8| 7| 6| 5| 4| 3| 2| 1| 0 - * +-------------+--+--+--+--+--+--+--+--+ - * | res. |w7|w6|w5|w4|w3|w2|w1|w0| - * +-------------+--+--+--+--+--+--+--+--+ - */ - |