diff options
Diffstat (limited to 'libgloss/sparc_leon/locore_mvt.S')
| -rw-r--r-- | libgloss/sparc_leon/locore_mvt.S | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/libgloss/sparc_leon/locore_mvt.S b/libgloss/sparc_leon/locore_mvt.S new file mode 100644 index 000000000..b8a051b15 --- /dev/null +++ b/libgloss/sparc_leon/locore_mvt.S @@ -0,0 +1,170 @@ +/* + * Copyright (c) 2011 Aeroflex Gaisler + * + * BSD license: + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + + +/* The traptable has to be the first code in a boot PROM. */ + +#include <asm-leon/head.h> + +#define TRAP(H) mov %psr, %l0; sethi %hi(H), %l4; jmp %l4+%lo(H); nop; +#define TRAPL(H) mov %g0, %g4; sethi %hi(H), %g4; jmp %g4+%lo(H); nop; +#define TRAP_ENTRY(H) rd %psr, %l0; b H; rd %wim, %l3; nop; +/* srmmu trap */ +#define SRMMU_TFAULT rd %psr, %l0; rd %wim, %l3; b _srmmu_fault; mov 1, %l6; +#define SRMMU_DFAULT rd %psr, %l0; rd %wim, %l3; b _srmmu_fault; mov 9, %l6; + +#define WIM_INIT 2 +#ifdef _SOFT_FLOAT +#define PSR_INIT 0x0e0 +#else +#define PSR_INIT 0x10e0 +#endif + +#define NUMREGWINDOWS 8 + +/* Unexcpected trap will halt the processor by forcing it to error state */ +#define BAD_TRAP ta 0; nop; nop; nop; + +/* Software trap. Treat as BAD_TRAP */ +#define SOFT_TRAP BAD_TRAP + + .seg "text" + .global _trap_table, cpuinit, leonbare_irq_entry, _hardreset, _hardreset_mvt + .global _window_overflow, _window_underflow, _flush_windows, _fpdis_enable + .global start +start: +_trap_table: + TRAPL(_hardreset_mvt); ! 00 reset trap + SRMMU_TFAULT ! 01 instruction_access_exception (in mmu_asm.S) + BAD_TRAP; ! 02 illegal_instruction + BAD_TRAP; ! 03 priveleged_instruction +#ifndef _SOFT_FLOAT + TRAP(_fpdis_enable); ! 04 fp_disabled +#else + TRAP(_fpdis); ! 04 fp_disabled +#endif +#ifndef _FLAT + TRAP(_window_overflow); ! 05 window_overflow + TRAP(_window_underflow); ! 06 window_underflow +#else + BAD_TRAP; BAD_TRAP; +#endif + BAD_TRAP; ! 07 memory_address_not_aligned + BAD_TRAP; ! 08 fp_exception + SRMMU_DFAULT ! 09 data_access_exception (in mmu_asm.S) + BAD_TRAP; ! 0A tag_overflow + + BAD_TRAP; ! 0B undefined + BAD_TRAP; ! 0C undefined + BAD_TRAP; ! 0D undefined + BAD_TRAP; ! 0E undefined + BAD_TRAP; ! 0F undefined + BAD_TRAP; ! 10 undefined + + /* Interrupt entries */ + TRAP_ENTRY_INTERRUPT(1); ! 11 interrupt level 1 + TRAP_ENTRY_INTERRUPT(2); ! 12 interrupt level 2 + TRAP_ENTRY_INTERRUPT(3); ! 13 interrupt level 3 + TRAP_ENTRY_INTERRUPT(4); ! 14 interrupt level 4 + TRAP_ENTRY_INTERRUPT(5); ! 15 interrupt level 5 + TRAP_ENTRY_INTERRUPT(6); ! 16 interrupt level 6 + TRAP_ENTRY_INTERRUPT(7); ! 17 interrupt level 7 + TRAP_ENTRY_INTERRUPT(8); ! 18 interrupt level 8 + TRAP_ENTRY_INTERRUPT(9); ! 19 interrupt level 9 + TRAP_ENTRY_INTERRUPT(10); ! 1A interrupt level 1 + TRAP_ENTRY_INTERRUPT(11); ! 1B interrupt level 11 + TRAP_ENTRY_INTERRUPT(12); ! 1C interrupt level 12 + TRAP_ENTRY_INTERRUPT(13); ! 1D interrupt level 13 + TRAP_ENTRY_INTERRUPT(14); ! 1E interrupt level 14 + TRAP_ENTRY_INTERRUPT(15); ! 1F interrupt level 15 + BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 20 - 23 undefined + BAD_TRAP; ! 24 cp_disabled + BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 25 - 27 undefined + BAD_TRAP; ! 28 cp_exception + BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 29 - 2B undefined + BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 2C - 2F undefined + BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 30 - 33 undefined + BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 34 - 37 undefined + BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 38 - 3B undefined + BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 3C - 3F undefined + BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 40 - 43 undefined + BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 44 - 47 undefined + BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 48 - 4B undefined + BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 4C - 4F undefined + BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 50 - 53 undefined + BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 54 - 57 undefined + BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 58 - 5B undefined + BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 5C - 5F undefined + BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 60 - 63 undefined + BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 64 - 67 undefined + BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 68 - 6B undefined + BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 6C - 6F undefined + BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 70 - 73 undefined + BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 74 - 77 undefined + BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 78 - 7B undefined + BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 7C - 7F undefined + + /* Software traps */ + SOFT_TRAP; SOFT_TRAP; TRAP(_irqcall); ! 80 - 82 +#ifndef _FLAT + TRAP_ENTRY(_flush_windows) ! 83 +#else + SOFT_TRAP +#endif + SOFT_TRAP; ! 84 + TRAP(_irqcall_disableirq); ! 85 + SOFT_TRAP; SOFT_TRAP; ! 86 - 87 + SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! 88 - 8B + SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! 8C - 8F + SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! 90 - 93 + SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! 94 - 97 + SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! 98 - 9B + SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! 9C - 9F + SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! A0 - A3 + SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! A4 - A7 + SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! A8 - AB + SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! AC - AF + SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! B0 - B3 + SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! B4 - B7 + SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! B8 - BB + SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! BC - BF + SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! C0 - C3 + SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! C4 - C7 + SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! C8 - CB + SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! CC - CF + SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! D0 - D3 + SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! D4 - D7 + SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! D8 - DB + SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! DC - DF + SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! E0 - E3 + SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! E4 - E7 + SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! E8 - EB + SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! EC - EF + SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! F0 - F3 + SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! F4 - F7 + SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! F8 - FB + SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! FC - FF + + + |