/* * Copyright (c) 2019-2020 Cobham Gaisler AB * * SPDX-License-Identifier: Apache-2.0 */ /* * This file contains a full SPARC V8 trap table. The processor redirects * exection to the trap table on trap events. Each trap table entrys is four * instructions. */ #include #include #define BAD_TRAP \ rd %psr, %l0; \ sethi %hi(__sparc_trap_fault), %l4; \ jmp %l4+%lo(__sparc_trap_fault); \ rd %tbr, %l6; #define INTERRUPT_TRAP(level) \ rd %psr, %l0; \ sethi %hi(INT_HANDLER), %l4; \ jmp %l4+%lo(INT_HANDLER); \ mov (0xf & level), %l3; #define TRAP(handler) \ rd %psr, %l0; \ sethi %hi(handler), %l4; \ jmp %l4+%lo(handler); \ rd %tbr, %l6; #define RESET_TRAP(handler) \ mov %g0, %g4; \ sethi %hi(handler), %g4; \ jmp %g4+%lo(handler); \ nop; /* * Generate the "trap in trap" condition which causes the processor to halt and * enter error mode. Typically used to stop a simulator (QEMU, TSIM) or leave * control to a hardware debug monitor (LEON DSU via GRMON). */ #define TRAP_IN_TRAP \ ta 0x00; \ nop; \ nop; \ nop; #define SOFT_TRAP BAD_TRAP #define WOF_TRAP TRAP(__sparc_trap_window_overflow) #define WUF_TRAP TRAP(__sparc_trap_window_underflow) #define FLW_TRAP TRAP(__sparc_trap_flush_windows) #define INT_HANDLER __sparc_trap_interrupt #ifdef CONFIG_IRQ_OFFLOAD #define IRQ_OFFLOAD_TRAP TRAP(__sparc_trap_irq_offload) #else #define IRQ_OFFLOAD_TRAP BAD_TRAP #endif GTEXT(__sparc_trap_table) GTEXT(__start) SECTION_SUBSEC_FUNC(TEXT, traptable, __sparc_trap_table) __start: /* * Values in the range 0 to 0x5F that are not assigned in SPARC V8 * specification Table 7-1 are reserved for future versions of the * architecture. */ RESET_TRAP(__sparc_trap_reset); ! 00 reset BAD_TRAP; ! 01 instruction_access_exception BAD_TRAP; ! 02 illegal_instruction BAD_TRAP; ! 03 priveleged_instruction BAD_TRAP; ! 04 fp_disabled WOF_TRAP; ! 05 window_overflow WUF_TRAP; ! 06 window_underflow BAD_TRAP; ! 07 mem_address_not_aligned BAD_TRAP; ! 08 fp_exception BAD_TRAP; ! 09 data_access_exception BAD_TRAP; ! 0A tag_overflow BAD_TRAP; ! 0B watchpoint_detected BAD_TRAP; ! 0C reserved BAD_TRAP; ! 0D reserved BAD_TRAP; ! 0E reserved BAD_TRAP; ! 0F reserved BAD_TRAP; ! 10 reserved /* Interrupt traps */ INTERRUPT_TRAP(1); ! 11 interrupt_level_1 INTERRUPT_TRAP(2); ! 12 interrupt_level_2 INTERRUPT_TRAP(3); ! 13 interrupt_level_3 INTERRUPT_TRAP(4); ! 14 interrupt_level_4 INTERRUPT_TRAP(5); ! 15 interrupt_level_5 INTERRUPT_TRAP(6); ! 16 interrupt_level_6 INTERRUPT_TRAP(7); ! 17 interrupt_level_7 INTERRUPT_TRAP(8); ! 18 interrupt_level_8 INTERRUPT_TRAP(9); ! 19 interrupt_level_9 INTERRUPT_TRAP(10); ! 1A interrupt_level_1 INTERRUPT_TRAP(11); ! 1B interrupt_level_11 INTERRUPT_TRAP(12); ! 1C interrupt_level_12 INTERRUPT_TRAP(13); ! 1D interrupt_level_13 INTERRUPT_TRAP(14); ! 1E interrupt_level_14 INTERRUPT_TRAP(15); ! 1F interrupt_level_15 BAD_TRAP; ! 20 r_register_access_error BAD_TRAP; ! 21 instruction_access_error BAD_TRAP; ! 22 reserved BAD_TRAP; ! 23 reserved BAD_TRAP; ! 24 cp_disabled BAD_TRAP; ! 25 unimplemented_FLUSH BAD_TRAP; ! 26 reserved BAD_TRAP; ! 27 reserved BAD_TRAP; ! 28 cp_exception BAD_TRAP; ! 29 data_access_error BAD_TRAP; ! 2A division_by_zero BAD_TRAP; ! 2B data_store_error BAD_TRAP; ! 2C data_access_MMU_miss BAD_TRAP; ! 2D reserved BAD_TRAP; ! 2E reserved BAD_TRAP; ! 2F reserved BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 30 - 33 reserved BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 34 - 37 reserved BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 38 - 3B reserved BAD_TRAP; ! 3C instruction_access_MMU_miss BAD_TRAP; ! 3D reserved BAD_TRAP; ! 3E reserved BAD_TRAP; ! 3F reserved 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 /* * tt values 0x60 to 0x7F are reserved for implementation-dependent * exceptions. */ 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 /* trap_instruction 0x80 - 0xFF */ /* NOTE: "ta 5" can be generated by compiler. */ TRAP_IN_TRAP; ! 0 System calls SOFT_TRAP; ! 1 Breakpoints SOFT_TRAP; ! 2 Division by zero FLW_TRAP; ! 3 Flush windows SOFT_TRAP; ! 4 Clean windows SOFT_TRAP; ! 5 Range checking SOFT_TRAP; ! 6 Fix alignment SOFT_TRAP; ! 7 Integer overflow SOFT_TRAP ! 8 System calls TRAP(__sparc_trap_sw_set_pil); ! 9 Reserved for the os SOFT_TRAP; ! 10 Reserved for the os SOFT_TRAP; ! 11 Reserved for the os /* See SPARC-ABI for purpose of the following software traps */ SOFT_TRAP; ! 12 IRQ_OFFLOAD_TRAP; ! 13 SOFT_TRAP; ! 14 TRAP(__sparc_trap_except_reason); ! 15 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