| 1 | /* vectors.s 1.1 - 95/12/04 |
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| 2 | * |
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| 3 | * This file contains the assembly code for the PowerPC 505 |
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| 4 | * interrupt veneers for RTEMS. |
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| 5 | * |
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| 6 | * Author: Sergei Organov <osv@javad.ru> |
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| 7 | * |
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| 8 | * COPYRIGHT (c) 1998 by JPS. |
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| 9 | * |
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| 10 | * To anyone who acknowledges that this file is provided "AS IS" |
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| 11 | * without any express or implied warranty: |
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| 12 | * permission to use, copy, modify, and distribute this file |
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| 13 | * for any purpose is hereby granted without fee, provided that |
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| 14 | * the above copyright notice and this notice appears in all |
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| 15 | * copies, and that the name of i-cubed limited not be used in |
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| 16 | * advertising or publicity pertaining to distribution of the |
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| 17 | * software without specific, written prior permission. |
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| 18 | * i-cubed limited makes no representations about the suitability |
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| 19 | * of this software for any purpose. |
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| 20 | * |
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| 21 | */ |
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| 22 | |
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| 23 | #include "asm.h" |
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| 24 | #include "ppc_offs.h" |
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| 25 | |
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| 26 | /* Vector offsets */ |
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| 27 | .set reset, 0x0100 # PPC_IRQ_RESET |
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| 28 | .set machine_check, 0x0200 # PPC_IRQ_MCHECK |
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| 29 | .set dsi, 0x0300 # PPC_IRQ_PROTECT |
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| 30 | .set isi, 0x0400 # PPC_IRQ_ISI |
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| 31 | .set external_interrupt, 0x0500 # PPC_IRQ_EXTERNAL |
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| 32 | .set alignment, 0x0600 # PPC_IRQ_ALIGN |
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| 33 | .set program, 0x0700 # PPC_IRQ_PROGRAM |
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| 34 | .set fp_unavailable, 0x0800 # PPC_IRQ_NOFP |
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| 35 | .set decrementer, 0x0900 # PPC_IRQ_DEC |
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| 36 | .set system_call, 0x0C00 # PPC_IRQ_SCALL |
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| 37 | .set trace, 0x0D00 # PPC_IRQ_TRACE |
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| 38 | .set fp_assist, 0x0E00 # PPC_IRQ_FPASSIST |
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| 39 | .set software_emulation, 0x1000 # PPC_IRQ_SOFTEMU |
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| 40 | .set data_bp, 0x1C00 # PPC_IRQ_DATA_BP |
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| 41 | .set istruction_bp, 0x1D00 # PPC_IRQ_INST_BP |
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| 42 | .set m_extern_bp, 0x1E00 # PPC_IRQ_MEXT_BP |
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| 43 | .set nm_extern_bp, 0x1F00 # PPC_IRQ_NMEXT_BP |
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| 44 | |
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| 45 | #if (PPC_ABI == PPC_ABI_POWEROPEN || PPC_ABI == PPC_ABI_GCC27) |
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| 46 | #define ABI_ADD 20*4 |
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| 47 | #else |
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| 48 | #define ABI_ADD 0 |
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| 49 | #endif |
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| 50 | |
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| 51 | #define ISR_HANDLER(vector, irq) \ |
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| 52 | .org vector; \ |
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| 53 | stwu r1, -(ABI_ADD + IP_END)(r1); \ |
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| 54 | stw r0, IP_0(r1); \ |
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| 55 | li r0, irq; \ |
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| 56 | b PROC (_ISR_Handler); |
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| 57 | |
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| 58 | /* Go to the right section */ |
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| 59 | .section .vect,"ax",@progbits |
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| 60 | .globl __vect |
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| 61 | __vect: |
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| 62 | ISR_HANDLER(reset, PPC_IRQ_RESET) |
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| 63 | ISR_HANDLER(machine_check, PPC_IRQ_MCHECK) |
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| 64 | ISR_HANDLER(dsi, PPC_IRQ_PROTECT) |
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| 65 | ISR_HANDLER(isi, PPC_IRQ_ISI) |
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| 66 | ISR_HANDLER(external_interrupt, PPC_IRQ_EXTERNAL) |
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| 67 | ISR_HANDLER(alignment, PPC_IRQ_ALIGN) |
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| 68 | ISR_HANDLER(program, PPC_IRQ_PROGRAM) |
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| 69 | ISR_HANDLER(fp_unavailable, PPC_IRQ_NOFP) |
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| 70 | ISR_HANDLER(decrementer, PPC_IRQ_DEC) |
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| 71 | ISR_HANDLER(system_call, PPC_IRQ_SCALL) |
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| 72 | ISR_HANDLER(trace, PPC_IRQ_TRACE) |
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| 73 | ISR_HANDLER(fp_assist, PPC_IRQ_FPASSIST) |
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| 74 | ISR_HANDLER(software_emulation, PPC_IRQ_SOFTEMU) |
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| 75 | ISR_HANDLER(data_bp, PPC_IRQ_DATA_BP) |
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| 76 | ISR_HANDLER(istruction_bp, PPC_IRQ_INST_BP) |
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| 77 | ISR_HANDLER(m_extern_bp, PPC_IRQ_MEXT_BP) |
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| 78 | ISR_HANDLER(nm_extern_bp, PPC_IRQ_NMEXT_BP) |
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