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authorNathan Sidwell <nathan@codesourcery.com>2005-12-12 14:16:41 +0300
committerNathan Sidwell <nathan@codesourcery.com>2005-12-12 14:16:41 +0300
commitad83f0cc13928b8d465e7bc39edb28666570dc18 (patch)
tree3cc4fb0ac26e32a66b645e7055890a6640ab5946 /libgloss/mt/startup-16-002.S
parent2193d02b4ddfc329e0817258093a40050b2d582a (diff)
Rename ms1 files to mt files (part 1 -- renames only)
Diffstat (limited to 'libgloss/mt/startup-16-002.S')
-rw-r--r--libgloss/mt/startup-16-002.S628
1 files changed, 628 insertions, 0 deletions
diff --git a/libgloss/mt/startup-16-002.S b/libgloss/mt/startup-16-002.S
new file mode 100644
index 000000000..475a120bd
--- /dev/null
+++ b/libgloss/mt/startup-16-002.S
@@ -0,0 +1,628 @@
+/*
+ * interrupt_vectors.s -- the interrupt handler jump table.
+ *
+ *
+ * There are a total of 32 interrupt vector possible, however, only
+ * 11 of those are currently used (the others are reserved). The
+ * order of vectors is as follows:
+ *
+ * 1. Boot Vector. Vector for power-on/reset.
+ * 2. Software Vector. Vector for handling the SI instruction (an
+ * explicit interrupt caused by software).
+ * 3. Break Vector. Vector for handling the Break instruction.
+ * 4. Device 0 Vector. Service vector for device zero.
+ * 5. Device 1 Vector. Service vector for device one.
+ * 6. Device 2 Vector. Service vector for device two.
+ * 7. Device 3 Vector. Service vector for device three.
+ * 8. Device 4 Vector. Service vector for device four.
+ * 9. Device 5 Vector. Service vector for device five.
+ * 10. Device 6 Vector. Service vector for device six.
+ * 11. Device 7 Vector. Service vector for device seven.
+ *
+ * The rest of the interrupt vectors are reserved for future use.
+ *
+ *
+ * Each jump table entry consists of the following two instructions:
+ *
+ * jmp Label ; Label as appropriate
+ * nop ; implemented as or r0,r0,r0
+ *
+ * The following labels are reserved for the vectors named above,
+ * respectively:
+ *
+ * _BOOTIVEC, _SOFTIVEC, _BRKIVEC, _DEV0IVEC, _DEV1IVEC, _DEV2IVEC,
+ * _DEV3IVEC, _DEV4IVEC, _DEV5IVEC, _DEV6IVEC, _DEV7IVEC
+ *
+ *
+ *
+ * Copyright (c) 2001, 2002, 2003, 2004 Morpho Technologies
+ *
+ */
+
+ .section .startup, "a", @progbits
+ .global __boot_start
+__boot_start:
+_INTERRUPT_VECTOR_TABLE:
+ jmp _BOOTIVEC ; Boot vector
+ or r0, r0, r0
+ jmp _SOFTIVEC ; Vector for SI instruction
+ or r0,r0,r0
+ jmp _BRKIVEC ; Vector for Break instruction
+ or r0,r0,r0
+ ; The illegal instruction trap is not implemented.
+_RESERVED1_IVEC:
+ jmp _RESERVED1_IVEC ; Vector for illegal instruction
+ or r0,r0,r0
+ jmp _OVFIVEC ; Vector for overflow exception
+ or r0,r0,r0
+_RESERVED2_IVEC:
+ jmp _RESERVED2_IVEC
+ or r0,r0,r0
+_RESERVED3_IVEC:
+ jmp _RESERVED3_IVEC
+ or r0,r0,r0
+_RESERVED4_IVEC:
+ jmp _RESERVED4_IVEC
+ or r0,r0,r0
+
+ .text
+
+ .equ SI_IOPORT_ADR, _DEBUG_SW_SYSREQ_REG
+ .equ SI_IOPORT_BIT, 0x1
+ .equ BRK_IOPORT_ADR, _DEBUG_BREAK_REG
+ .equ BRK_IOPORT_BIT, 0x1
+
+ .global _BOOTIVEC
+_BOOTIVEC:
+ ; Initialize the interrupt controller's interrupt vector registers
+ ldui r1, #%hi16(_IVEC_DEFAULT)
+ ori r1, r1, #%lo16(_IVEC_DEFAULT)
+ stw r1, r0, #%lo16(_DEV0_INTERRUPT_REG)
+ stw r1, r0, #%lo16(_DEV1_INTERRUPT_REG)
+ stw r1, r0, #%lo16(_DEV2_INTERRUPT_REG)
+ stw r1, r0, #%lo16(_DEV3_INTERRUPT_REG)
+ stw r1, r0, #%lo16(_DEV4_INTERRUPT_REG)
+ stw r1, r0, #%lo16(_DEV5_INTERRUPT_REG)
+ stw r1, r0, #%lo16(_DEV6_INTERRUPT_REG)
+ stw r1, r0, #%lo16(_DEV7_INTERRUPT_REG)
+ stw r1, r0, #%lo16(_DEV8_INTERRUPT_REG)
+ stw r1, r0, #%lo16(_DEV9_INTERRUPT_REG)
+ stw r1, r0, #%lo16(_DEV10_INTERRUPT_REG)
+ stw r1, r0, #%lo16(_DEV11_INTERRUPT_REG)
+ stw r1, r0, #%lo16(_DEV12_INTERRUPT_REG)
+ stw r1, r0, #%lo16(_DEV13_INTERRUPT_REG)
+ stw r1, r0, #%lo16(_DEV14_INTERRUPT_REG)
+ stw r1, r0, #%lo16(_DEV15_INTERRUPT_REG)
+ stw r1, r0, #%lo16(_DEV16_INTERRUPT_REG)
+ stw r1, r0, #%lo16(_DEV17_INTERRUPT_REG)
+ stw r1, r0, #%lo16(_DEV18_INTERRUPT_REG)
+
+ ; Statically initialized data must be copied from ROM to RAM.
+ ; This is done in the C run-time start-up code (crt0.o).
+
+ ; Jump to the beginning of the application and enable interrupts.
+ jmp _start
+ ei
+
+
+
+ ; Handler for the SI instruction. To perform a system call, the
+ ; C model uses a trapping mechanism which executes an SI instruction.
+ ; The Morpho Technologies simulator simply performs a branch to
+ ; this vector to simulate the SI instruction (this is as the hardware
+ ; behaves). In order to trigger the simulator that a system call
+ ; is needed a write into the I/O register at address $40005 to
+ ; set bit #2 (0x4) is necessary.
+ ;
+ ; The above address has been changed to 0x00031C and the bit number
+ ; is zero. (The manifest constants have been changed to reflect this.)
+ .global _SOFTIVEC
+_SOFTIVEC:
+ ; Build a frame to save registers.
+ subi sp, sp, #$8
+ stw r9, sp, #$4
+ ldui r9, #%hi16(SI_IOPORT_ADR)
+ stw r10, sp, #$0
+ ori r9, r9, #%lo16(SI_IOPORT_ADR)
+ ori r10, r0, #SI_IOPORT_BIT
+ stw r10, r9, #$0
+ or r0, r0, r0 ; SYS_call is handled by simulator here...
+ ldw r10, sp, #$0
+ or r0, r0, r0
+ ldw r9, sp, #$4
+ reti r14
+ addi sp, sp, #$8
+
+
+
+ ; Handler for BREAK instruction. This handler triggers the simulator
+ ; to send a SIGTRAP signal to gdb by writing to the I/O register at
+ ; address $40005, setting bit #0 (0x1).
+ ;
+ ; The above address has been changed to 0x000304 and the bit number
+ ; is zero. (The manifest constants have been changed to reflect this.)
+ .global _BRKIVEC
+_BRKIVEC:
+ ; Build a frame to save registers.
+ subi sp, sp, #$8
+ stw r9, sp, #$4
+ ldui r9, #%hi16(BRK_IOPORT_ADR)
+ stw r10, sp, #$0
+ ori r9, r9, #%lo16(BRK_IOPORT_ADR)
+ ori r10, r0, #BRK_IOPORT_BIT
+ stw r10, r9, #$0
+ or r0, r0, r0
+ or r0, r0, r0
+ or r0, r0, r0
+ or r0, r0, r0
+ or r0, r0, r0
+ ldw r10, sp, #$0
+ ldw r9, sp, #$4
+ reti r15
+ addi sp, sp, #$8
+
+
+ ; The documentation is lacking in the specification of the Overflow
+ ; Exception generation. The address of the instruction causing the
+ ; overflow is placed into R15 and the overflow exception interrupt
+ ; is triggered. So, to continue execution, return to the address
+ ; of the next instruction (i.e., R15 + one instruction).
+_OVFIVEC:
+ addi r15, r15, #$4
+ or r0, r0, r0
+ reti r15
+ or r0, r0, r0
+
+
+ .global _IVEC_DEFAULT
+_IVEC_DEFAULT:
+ reti r15
+ or r0, r0, r0
+
+
+ .section .internal_io, "a", @progbits
+ .fill 256 ; Fill the first page.
+
+ ; This is the memory-mapped I/O region.
+
+ ; Hardware Interrupt Registers
+ ;.org 0xfff100
+ .global _DEV0_INTERRUPT_REG
+_DEV0_INTERRUPT_REG:
+ .word 0x00000000
+
+ .global _DEV1_INTERRUPT_REG
+_DEV1_INTERRUPT_REG:
+ .word 0x00000000
+
+ .global _DEV2_INTERRUPT_REG
+_DEV2_INTERRUPT_REG:
+ .word 0x00000000
+
+ .global _DEV3_INTERRUPT_REG
+_DEV3_INTERRUPT_REG:
+ .word 0x00000000
+
+ .global _DEV4_INTERRUPT_REG
+_DEV4_INTERRUPT_REG:
+ .word 0x00000000
+
+ .global _DEV5_INTERRUPT_REG
+_DEV5_INTERRUPT_REG:
+ .word 0x00000000
+
+ .global _DEV6_INTERRUPT_REG
+_DEV6_INTERRUPT_REG:
+ .word 0x00000000
+
+ .global _DEV7_INTERRUPT_REG
+_DEV7_INTERRUPT_REG:
+ .word 0x00000000
+
+ .global _DEV8_INTERRUPT_REG
+_DEV8_INTERRUPT_REG:
+ .word 0x00000000
+
+ .global _DEV9_INTERRUPT_REG
+_DEV9_INTERRUPT_REG:
+ .word 0x00000000
+
+ .global _DEV10_INTERRUPT_REG
+_DEV10_INTERRUPT_REG:
+ .word 0x00000000
+
+ .global _DEV11_INTERRUPT_REG
+_DEV11_INTERRUPT_REG:
+ .word 0x00000000
+
+ .global _DEV12_INTERRUPT_REG
+_DEV12_INTERRUPT_REG:
+ .word 0x00000000
+
+ .global _DEV13_INTERRUPT_REG
+_DEV13_INTERRUPT_REG:
+ .word 0x00000000
+
+ .global _DEV14_INTERRUPT_REG
+_DEV14_INTERRUPT_REG:
+ .word 0x00000000
+
+ .global _DEV15_INTERRUPT_REG
+_DEV15_INTERRUPT_REG:
+ .word 0x00000000
+
+ .global _DEV16_INTERRUPT_REG
+_DEV16_INTERRUPT_REG:
+ .word 0x00000000
+
+ .global _DEV17_INTERRUPT_REG
+_DEV17_INTERRUPT_REG:
+ .word 0x00000000
+
+ .global _DEV18_INTERRUPT_REG
+_DEV18_INTERRUPT_REG:
+ .word 0x00000000
+
+ ; 128 bytes minus ten registers (four bytes per register)
+ .fill (128 - 19 * 4)
+
+ .global _INTERRUPT_MASK_REG
+_INTERRUPT_MASK_REG:
+ .word 0x00000000
+
+ ; 128 bytes minus one register (four bytes per register)
+ .fill (128 - 1 * 4)
+
+
+ ;.org 0xfff200
+ ; MorphoSys Decoder Registers
+ .global _MS_DEC_CIRC_BUFF_SEL_REG
+_MS_DEC_CIRC_BUFF_SEL_REG:
+ .word 0x00000000
+
+ .global _MS_DEC_SKIP_FACTOR_REG
+_MS_DEC_SKIP_FACTOR_REG:
+ .word 0x00000000
+
+ .global _MS_DEC_CUSTOM_PERM_REG
+_MS_DEC_CUSTOM_PERM_REG:
+ .word 0x00000000
+
+ .global _MS_DEC_CTXT_BASE_REG
+_MS_DEC_CTXT_BASE_REG:
+ .word 0x00000000
+
+ .global _MS_DEC_LOOKUP_TBL_REG
+_MS_DEC_LOOKUP_TBL_REG:
+ .word 0x00000000
+
+ .global _MS_CIRC_BUFF0_END_REG
+_MS_CIRC_BUFF0_END_REG:
+ .word (__FRAME_BUFFER_END)
+
+ .global _MS_CIRC_BUFF0_SIZE_REG
+_MS_CIRC_BUFF0_SIZE_REG:
+ .word __FRAME_BUFFER_SIZE
+
+ .global _MS_DATA_BLK0_END_REG
+_MS_DATA_BLK0_END_REG:
+ .word 0x00000000
+
+ .global _MS_DATA_BLK0_SIZE_REG
+_MS_DATA_BLK0_SIZE_REG:
+ .word 0x00000000
+
+ .global _MS_CIRC_BUFF1_END_REG
+_MS_CIRC_BUFF1_END_REG:
+ .word (__FRAME_BUFFER_END)
+
+ .global _MS_CIRC_BUFF1_SIZE_REG
+_MS_CIRC_BUFF1_SIZE_REG:
+ .word __FRAME_BUFFER_SIZE
+
+ .global _MS_DATA_BLK1_END_REG
+_MS_DATA_BLK1_END_REG:
+ .word 0x00000000
+
+ .global _MS_DATA_BLK1_SIZE_REG
+_MS_DATA_BLK1_SIZE_REG:
+ .word 0x00000000
+
+ .global _MS_CIRC_BUFF2_END_REG
+_MS_CIRC_BUFF2_END_REG:
+ .word (__FRAME_BUFFER_END)
+
+ .global _MS_CIRC_BUFF2_SIZE_REG
+_MS_CIRC_BUFF2_SIZE_REG:
+ .word __FRAME_BUFFER_SIZE
+
+ .global _MS_DATA_BLK2_END_REG
+_MS_DATA_BLK2_END_REG:
+ .word 0x00000000
+
+ .global _MS_DATA_BLK2_SIZE_REG
+_MS_DATA_BLK2_SIZE_REG:
+ .word 0x00000000
+
+ .global _MS_CIRC_BUFF3_END_REG
+_MS_CIRC_BUFF3_END_REG:
+ .word (__FRAME_BUFFER_END)
+
+ .global _MS_CIRC_BUFF3_SIZE_REG
+_MS_CIRC_BUFF3_SIZE_REG:
+ .word __FRAME_BUFFER_SIZE
+
+ .global _MS_DATA_BLK3_END_REG
+_MS_DATA_BLK3_END_REG:
+ .word 0x00000000
+
+ .global _MS_DATA_BLK3_SIZE_REG
+_MS_DATA_BLK3_SIZE_REG:
+ .word 0x00000000
+
+ .global _MS_CIRC_BUFF4_END_REG
+_MS_CIRC_BUFF4_END_REG:
+ .word (__FRAME_BUFFER_END)
+
+ .global _MS_CIRC_BUFF4_SIZE_REG
+_MS_CIRC_BUFF4_SIZE_REG:
+ .word __FRAME_BUFFER_SIZE
+
+ .global _MS_DATA_BLK4_END_REG
+_MS_DATA_BLK4_END_REG:
+ .word 0x00000000
+
+ .global _MS_DATA_BLK4_SIZE_REG
+_MS_DATA_BLK4_SIZE_REG:
+ .word 0x00000000
+
+ .global _MS_CIRC_BUFF5_END_REG
+_MS_CIRC_BUFF5_END_REG:
+ .word (__FRAME_BUFFER_END)
+
+ .global _MS_CIRC_BUFF5_SIZE_REG
+_MS_CIRC_BUFF5_SIZE_REG:
+ .word __FRAME_BUFFER_SIZE
+
+ .global _MS_DATA_BLK5_END_REG
+_MS_DATA_BLK5_END_REG:
+ .word 0x00000000
+
+ .global _MS_DATA_BLK5_SIZE_REG
+_MS_DATA_BLK5_SIZE_REG:
+ .word 0x00000000
+
+ .global _MS_CIRC_BUFF6_END_REG
+_MS_CIRC_BUFF6_END_REG:
+ .word (__FRAME_BUFFER_END)
+
+ .global _MS_CIRC_BUFF6_SIZE_REG
+_MS_CIRC_BUFF6_SIZE_REG:
+ .word __FRAME_BUFFER_SIZE
+
+ .global _MS_DATA_BLK6_END_REG
+_MS_DATA_BLK6_END_REG:
+ .word 0x00000000
+
+ .global _MS_DATA_BLK6_SIZE_REG
+_MS_DATA_BLK6_SIZE_REG:
+ .word 0x00000000
+
+ .global _MS_CIRC_BUFF7_END_REG
+_MS_CIRC_BUFF7_END_REG:
+ .word (__FRAME_BUFFER_END)
+
+ .global _MS_CIRC_BUFF7_SIZE_REG
+_MS_CIRC_BUFF7_SIZE_REG:
+ .word __FRAME_BUFFER_SIZE
+
+ .global _MS_DATA_BLK7_END_REG
+_MS_DATA_BLK7_END_REG:
+ .word 0x00000000
+
+ .global _MS_DATA_BLK7_SIZE_REG
+_MS_DATA_BLK7_SIZE_REG:
+ .word 0x00000000
+
+ .global _MS_DEC_AUTO_INC0_REG
+_MS_DEC_AUTO_INC0_REG:
+ .word 0x00000000
+
+ .global _MS_DEC_AUTO_INC1_REG
+_MS_DEC_AUTO_INC1_REG:
+ .word 0x00000000
+
+ .global _MS_DEC_AUTO_INC2_REG
+_MS_DEC_AUTO_INC2_REG:
+ .word 0x00000000
+
+ .global _MS_DEC_AUTO_INC3_REG
+_MS_DEC_AUTO_INC3_REG:
+ .word 0x00000000
+
+ .global _MS_DEC_AUTO_INC4_REG
+_MS_DEC_AUTO_INC4_REG:
+ .word 0x00000000
+
+ .global _MS_DEC_AUTO_INC5_REG
+_MS_DEC_AUTO_INC5_REG:
+ .word 0x00000000
+
+ .global _MS_DEC_AUTO_INC6_REG
+_MS_DEC_AUTO_INC6_REG:
+ .word 0x00000000
+
+ .global _MS_DEC_AUTO_INC7_REG
+_MS_DEC_AUTO_INC7_REG:
+ .word 0x00000000
+
+
+ ; 256 bytes minus forty-five registers (four bytes per register)
+ .fill (256 - 45 * 4)
+
+
+
+ ;.org 0xfff300
+ ; Debug Registers
+ .global _DEBUG_HALT_REG
+_DEBUG_HALT_REG:
+ .word 0x00000000
+
+ .global _DEBUG_BREAK_REG
+_DEBUG_BREAK_REG:
+ .word 0x00000000
+
+ ; There are five reserved registers.
+ .fill (5 * 4)
+
+ .global _DEBUG_SW_SYSREQ_REG
+_DEBUG_SW_SYSREQ_REG:
+ .word 0x00000000
+
+ ; 256 bytes minus eight registers (four bytes per register)
+ .fill (256 - 8 * 4)
+
+
+
+ ;.org 0xfff400
+ ; Sequence Generator Registers
+ .global _SEQ_GEN_CTRL_REG
+_SEQ_GEN_CTRL_REG:
+ .word 0x00000000
+
+ .global _SEQ_GEN_MASK_REGS
+_SEQ_GEN_MASK_REGS:
+ ; The mask registers consume two pages (less one control register).
+ ; 512 bytes minus one register (four bytes per register).
+ .fill (256 + 256 - 1 * 4)
+
+
+
+ ;.org 0xfff600
+ ; Timer Registers
+ .global _TIMER0_VAL_REG
+_TIMER0_VAL_REG:
+ .word 0x00000000
+
+ .global _TIMER1_VAL_REG
+_TIMER1_VAL_REG:
+ .word 0x00000000
+
+ .global _TIMER2_VAL_REG
+_TIMER2_VAL_REG:
+ .word 0x00000000
+
+ .global _TIMER3_VAL_REG
+_TIMER3_VAL_REG:
+ .word 0x00000000
+
+ ; 256 bytes minus four registers (four bytes per register)
+ .fill (256 - 4 * 4)
+
+
+
+ ;.org 0xfff700
+ ; Output Line Control Registers
+ .global _OUTPUT0_CTRL
+_OUTPUT0_CTRL:
+ .word 0x00000000
+
+ .global _OUTPUT1_CTRL
+_OUTPUT1_CTRL:
+ .word 0x00000000
+
+ .global _OUTPUT2_CTRL
+_OUTPUT2_CTRL:
+ .word 0x00000000
+
+ .global _OUTPUT3_CTRL
+_OUTPUT3_CTRL:
+ .word 0x00000000
+
+ .global _OUTPUT4_CTRL
+_OUTPUT4_CTRL:
+ .word 0x00000000
+
+ .global _OUTPUT5_CTRL
+_OUTPUT5_CTRL:
+ .word 0x00000000
+
+ .global _OUTPUT6_CTRL
+_OUTPUT6_CTRL:
+ .word 0x00000000
+
+ .global _OUTPUT7_CTRL
+_OUTPUT7_CTRL:
+ .word 0x00000000
+
+ .global _OUTPUT8_CTRL
+_OUTPUT8_CTRL:
+ .word 0x00000000
+
+ .global _OUTPUT9_CTRL
+_OUTPUT9_CTRL:
+ .word 0x00000000
+
+ .global _OUTPUT10_CTRL
+_OUTPUT10_CTRL:
+ .word 0x00000000
+
+ ;; 128 bytes minus eleven registers (four bytes per register)
+ ;.fill (128 - 11 * 4)
+
+ .global _INPUT0_CTRL
+_INPUT0_CTRL:
+ .word 0x00000000
+
+ ;; 128 bytes minus one register (four bytes per register)
+ ;.fill (128 - 1 * 4)
+ ; 256 bytes minus twelve registers (four bytes per register)
+ .fill (256 - 12 * 4)
+
+
+
+ ;.org 0xfff800
+ ; IQ Buffer Registers
+ .global _IQ_BUFF_CTRL_REG
+_IQ_BUFF_CTRL_REG:
+ .word 0x00000000
+
+ .global _IQ_BUFF_PARAMETER1_REG
+_IQ_BUFF_PARAMETER1_REG:
+ .word 0x00000000
+
+ .global _IQ_BUFF_DATA_SIZE1_REG
+_IQ_BUFF_DATA_SIZE1_REG:
+ .word 0x00000000
+
+ .global _IQ_BUFF_TRANSFER_SIZE1_REG
+_IQ_BUFF_TRANSFER_SIZE1_REG:
+ .word 0x00000000
+
+ .global _IQ_BUFF_FB_ADDR1_REG
+_IQ_BUFF_FB_ADDR1_REG:
+ .word 0x00000000
+
+ .global _IQ_BUFF_PARAMETER2_REG
+_IQ_BUFF_PARAMETER2_REG:
+ .word 0x00000000
+
+ .global _IQ_BUFF_DATA_SIZE2_REG
+_IQ_BUFF_DATA_SIZE2_REG:
+ .word 0x00000000
+
+ .global _IQ_BUFF_TRANSFER_SIZE2_REG
+_IQ_BUFF_TRANSFER_SIZE2_REG:
+ .word 0x00000000
+
+ .global _IQ_BUFF_FB_ADDR2_REG
+_IQ_BUFF_FB_ADDR2_REG:
+ .word 0x00000000
+
+ ; 256 bytes minus nine registers (four bytes per register)
+ .fill (256 - 9 * 4)
+
+
+ ;.org 0xfff900
+ ; Reserved memory-mapped space.
+ .fill (0x1000 - 0x900)