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Added EZ80 files

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@738 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2008-03-16 23:36:25 +00:00
parent b77e93e4db
commit 4188b87703
7 changed files with 743 additions and 4 deletions
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6
arch/z80/src/ez80/Make.defs
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@ -48,6 +48,6 @@ ifeq ($(_EZ80F91),y)
CHIP_ASRCS += ez80f91_init.asm
endif
CHIP_SSRCS =
CHIP_CSRCS = ez80_initialstate.c ez80_irq.c ez80_saveirqcontext.c \
ez80_schedulesigaction.c ez80_sigdeliver.c ez80_timerisr.c \
ez80_lowuart.c ez80_serial.c ez80_registerdump.c
CHIP_CSRCS = ez80_initialstate.c ez80_irq.c ez80_schedulesigaction.c \
ez80_sigdeliver.c ez80_timerisr.c ez80_lowuart.c ez80_serial.c \
ez80_registerdump.c

135
arch/z80/src/ez80/ez80_irq.c Normal file
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@ -0,0 +1,135 @@
/****************************************************************************
* arch/z80/src/ez80/ez80_irq.c
*
* Copyright (C) 2008 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <nuttx/arch.h>
#include <nuttx/irq.h>
#include "chip/switch.h"
#include "up_internal.h"
/****************************************************************************
* Private Definitions
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_irqinitialize
****************************************************************************/
void up_irqinitialize(void)
{
}
/****************************************************************************
* Name: irqsave
*
* Description:
* Disable all interrupts; return previous interrupt state
*
****************************************************************************/
irqstate_t irqsave(void)
{
}
/****************************************************************************
* Name: irqrestore
*
* Description:
* Restore previous interrupt state
*
****************************************************************************/
void irqrestore(irqstate_t flags)
{
}
/****************************************************************************
* Name: up_disable_irq
*
* Description:
* Disable the IRQ specified by 'irq'
*
****************************************************************************/
void up_disable_irq(int irq)
{
}
/****************************************************************************
* Name: up_enable_irq
*
* Description:
* Enable the IRQ specified by 'irq'
*
****************************************************************************/
void up_enable_irq(int irq)
{
}
/****************************************************************************
* Name: up_maskack_irq
*
* Description:
* Mask the IRQ and acknowledge it
*
****************************************************************************/
void up_maskack_irq(int irq)
{
}

109
arch/z80/src/ez80/ez80_restorecontext.asm Normal file
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@ -0,0 +1,109 @@
;**************************************************************************
; arch/z80/src/ez80/z80_restorcontext.asm
;
; Copyright (C) 2008 Gregory Nutt. All rights reserved.
; Author: Gregory Nutt <spudmonkey@racsa.co.cr>
;
; Redistribution and use in source and binary forms, with or without
; modification, are permitted provided that the following conditions
; are met:
;
; 1. Redistributions of source code must retain the above copyright
; notice, this list of conditions and the following disclaimer.
; 2. Redistributions in binary form must reproduce the above copyright
; notice, this list of conditions and the following disclaimer in
; the documentation and/or other materials provided with the
; distribution.
; 3. Neither the name NuttX nor the names of its contributors may be
; used to endorse or promote products derived from this software
; without specific prior written permission.
;
; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
; "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
; LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
; FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
; COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
; INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
; BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
; OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
; AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
; LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
; ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
; POSSIBILITY OF SUCH DAMAGE.
;
;**************************************************************************
;**************************************************************************
; Global Symbols Imported
;**************************************************************************
;**************************************************************************
; Global Symbols Expported
;**************************************************************************
xdef _ez80_restorecontext
;**************************************************************************
; Code
;**************************************************************************
segment CODE
;**************************************************************************
; ez80_restorecontext
;**************************************************************************
_ez80_restorecontext:
; On entry, stack contains return address (not used), then address
; of the register save structure
; Discard the return address, we won't be returning
pop hl
; Get the address of the beginning of the state save area. Each
; pop will increment to the next element of the structure
pop hl ; BC = Address of save structure
ld sp, hl ; SP points to top of storage area
; Disable interrupts while we muck with the alternative registers. The
; Correct interrupt state will be restore below
di
; Restore registers. HL points to the beginning of the reg structure to restore
ex af, af' ; Select alternate AF
pop af ; Offset 0: AF' = I with interrupt state in carry
ex af, af' ; Restore original AF
pop bc ; Offset 1: BC
pop de ; Offset 2: DE
pop ix ; Offset 3: IX
pop iy ; Offset 4: IY
exx ; Use alternate BC/DE/HL
pop hl ; Offset 5: HL' = Stack pointer after return
exx ; Restore original BC/DE/HL
pop hl ; Offset 6: HL
pop af ; Offset 7: AF
; Restore the stack pointer
exx ; Use alternate BC/DE/HL
pop de ; DE' = return address
ld sp, hl ; Set SP = saved stack pointer value before return
push de ; Save return address for ret instruction
exx ; Restore original BC/DE/HL
; Restore interrupt state
ex af, af' ; Recover interrupt state
jr po, noinrestore ; No parity, IFF2=0, means disabled
ex af, af' ; Restore AF (before enabling interrupts)
ei ; yes.. Enable interrupts
ret ; and return
noinrestore:
ex af, af' ; Restore AF
ret ; Return with interrupts disabled
end

157
arch/z80/src/ez80/ez80_saveusercontext.asm Normal file
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@ -0,0 +1,157 @@
;*************************************************************************
; arch/z80/src/ez80/ez80_saveusercontext.asm
;
; Copyright (C) 2008 Gregory Nutt. All rights reserved.
; Author: Gregory Nutt <spudmonkey@racsa.co.cr>
;
; Redistribution and use in source and binary forms, with or without
; modification, are permitted provided that the following conditions
; are met:
;
; 1. Redistributions of source code must retain the above copyright
; notice, this list of conditions and the following disclaimer.
; 2. Redistributions in binary form must reproduce the above copyright
; notice, this list of conditions and the following disclaimer in
; the documentation and/or other materials provided with the
; distribution.
; 3. Neither the name NuttX nor the names of its contributors may be
; used to endorse or promote products derived from this software
; without specific prior written permission.
;
; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
; "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
; LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
; FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
; COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
; INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
; BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
; OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
; AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
; LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
; ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
; POSSIBILITY OF SUCH DAMAGE.
;
;*************************************************************************
;**************************************************************************
; Global Symbols Imported
;**************************************************************************
;**************************************************************************
; Global Symbols Expported
;**************************************************************************
xdef _ez80_saveusercontext
;*************************************************************************
; Constants
;*************************************************************************
; Register save area layout
.if CONFIG_EZ80_Z80MODE
XCPT_I EQU 2*0 ; Offset 0: Saved I w/interrupt state in carry
XCPT_BC EQU 2*1 ; Offset 1: Saved BC register
XCPT_DE EQU 2*2 ; Offset 2: Saved DE register
XCPT_IX EQU 2*3 ; Offset 3: Saved IX register
XCPT_IY EQU 2*4 ; Offset 4: Saved IY register
XCPT_SP EQU 2*5 ; Offset 5: Offset to SP at time of interrupt
XCPT_HL EQU 2*6 ; Offset 6: Saved HL register
XCPT_AF EQU 2*7 ; Offset 7: Saved AF register
XCPT_PC EQU 2*8 ; Offset 8: Offset to PC at time of interrupt
.else
XCPT_I EQU 3*0 ; Offset 0: Saved I w/interrupt state in carry
XCPT_BC EQU 3*1 ; Offset 1: Saved BC register
XCPT_DE EQU 3*2 ; Offset 2: Saved DE register
XCPT_IX EQU 3*3 ; Offset 3: Saved IX register
XCPT_IY EQU 3*4 ; Offset 4: Saved IY register
XCPT_SP EQU 3*5 ; Offset 5: Offset to SP at time of interrupt
XCPT_HL EQU 3*6 ; Offset 6: Saved HL register
XCPT_AF EQU 3*7 ; Offset 7: Saved AF register
XCPT_PC EQU 3*8 ; Offset 8: Offset to PC at time of interrupt .endif
; Stack frame
FRAME_IY EQU 0 ; Location of IY on the stack
FRAME_IX EQU 2 ; Location of IX on the stack
FRAME_RET EQU 4 ; Location of return address on the stack
FRAME_REGS EQU 6 ; Location of reg save area on stack
SP_OFFSET EQU 6
;**************************************************************************
; Code
;**************************************************************************
segment CODE
;*************************************************************************
; Name: z80_saveusercontext
;*************************************************************************
_ez80_saveusercontext:
; Set up a stack frame
push ix ; Save IX and IY
push iy
ld ix, #0
add ix, sp ; IX = stack frame
; Fetch the address of the save area
ld de, FRAME_REGS(ix) ; DE = save area address
ld iy, #0
add iy, de ; IY = save area address
; Then save the registers
; Save the current interrupt state at offset 0
ld a, i ; Get interrupt state
push af
pop hl
ld XCPT_I(iy), hl ; Index 0: I w/interrupt state in parity/overflow
; Save BC at offset 1
ld XCPT_BC(iy), bc ; Index 1: BC
; DE is not preserved (Index 2)
; Save IX at offset 3
ld hl, FRAME_IX(ix) ; HL = Saved alue of IX
ld XCPT_IX(iy), hl ; Index 3: IX
; Save IY at index 4
ld hl, FRAME_IY(ix) ; HL = Saved value of IY
ld XCPT_IY(iy), hl ; Index 4: IY
; Save that stack pointer as it would be upon return in offset 5
ld hl, #SP_OFFSET ; Value of stack pointer on return
add hl, sp
ld XCPT_SP(iy), hl ; Index 5 SP
; HL is saved as the value 1 at offset 6
ld hl, #1
ld XCPT_HL(iy), hl ; Index 2: HL on return (=1)
; AF is not preserved (offset 7)
; Save the return address at index 8
ld hl, FRAME_RET(ix) ; HL = Saved return address
ld XCPT_PC(iy), hl ; Index 8: PC
; Return the value 0
ld hl, #0
pop iy
pop ix
ret
end

192
arch/z80/src/ez80/ez80_schedulesigaction.c Normal file
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@ -0,0 +1,192 @@
/****************************************************************************
* arch/z80/src/ez80/ez80_schedulesigaction.c
*
* Copyright (C) 2008 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <sched.h>
#include <debug.h>
#include <nuttx/arch.h>
#include <arch/irq.h>
#include "chip/switch.h"
#include "os_internal.h"
#include "up_internal.h"
#ifndef CONFIG_DISABLE_SIGNALS
/****************************************************************************
* Private Definitions
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: ez80_sigsetup
****************************************************************************/
static void ez80_sigsetup(FAR _TCB *tcb, sig_deliver_t sigdeliver, FAR chipreg_t *regs)
{
/* Save the return address and interrupt state. These will be restored by
* the signal trampoline after the signals have been delivered.
*/
tcb->xcp.sigdeliver = sigdeliver;
tcb->xcp.saved_pc = regs[XCPT_PC];
tcb->xcp.saved_i = regs[XCPT_I];
/* Then set up to vector to the trampoline with interrupts disabled */
regs[XCPT_PC] = (chipreg_t)up_sigdeliver;
regs[XCPT_I] = 0;
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_schedule_sigaction
*
* Description:
* This function is called by the OS when one or more
* signal handling actions have been queued for execution.
* The architecture specific code must configure things so
* that the 'igdeliver' callback is executed on the thread
* specified by 'tcb' as soon as possible.
*
* This function may be called from interrupt handling logic.
*
* This operation should not cause the task to be unblocked
* nor should it cause any immediate execution of sigdeliver.
* Typically, a few cases need to be considered:
*
* (1) This function may be called from an interrupt handler
* During interrupt processing, all xcptcontext structures
* should be valid for all tasks. That structure should
* be modified to invoke sigdeliver() either on return
* from (this) interrupt or on some subsequent context
* switch to the recipient task.
* (2) If not in an interrupt handler and the tcb is NOT
* the currently executing task, then again just modify
* the saved xcptcontext structure for the recipient
* task so it will invoke sigdeliver when that task is
* later resumed.
* (3) If not in an interrupt handler and the tcb IS the
* currently executing task -- just call the signal
* handler now.
*
****************************************************************************/
void up_schedule_sigaction(FAR _TCB *tcb, sig_deliver_t sigdeliver)
{
dbg("tcb=0x%p sigdeliver=0x%04x\n", tcb, (uint16)sigdeliver);
/* Refuse to handle nested signal actions */
if (tcb->xcp.sigdeliver == NULL)
{
irqstate_t flags;
/* Make sure that interrupts are disabled */
flags = irqsave();
/* First, handle some special cases when the signal is being delivered
* to the currently executing task.
*/
if (tcb == (FAR _TCB*)g_readytorun.head)
{
/* CASE 1: We are not in an interrupt handler and a task is
* signalling itself for some reason.
*/
if (!IN_INTERRUPT())
{
/* In this case just deliver the signal now. */
sigdeliver(tcb);
}
/* CASE 2: We are in an interrupt handler AND the interrupted task
* is the same as the one that must receive the signal, then we
* will have to modify the return state as well as the state in
* the TCB.
*/
else
{
/* Set up to vector to the trampoline with interrupts disabled. */
ez80_sigsetup(tcb, sigdeliver, IRQ_STATE());
/* And make sure that the saved context in the TCB
* is the same as the interrupt return context.
*/
SAVE_IRQCONTEXT(tcb);
}
}
/* Otherwise, we are (1) signaling a task is not running from an interrupt
* handler or (2) we are not in an interrupt handler and the running task
* is signalling some non-running task.
*/
else
{
/* Set up to vector to the trampoline with interrupts disabled. */
ez80_sigsetup(tcb, sigdeliver, tcb->xcp.regs);
}
irqrestore(flags);
}
}
#endif /* CONFIG_DISABLE_SIGNALS */

141
arch/z80/src/ez80/ez80_sigdeliver.c Normal file
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@ -0,0 +1,141 @@
/****************************************************************************
* arch/z80/src/ez80/ez80_sigdeliver.c
*
* Copyright (C) 2008 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <sched.h>
#include <debug.h>
#include <nuttx/irq.h>
#include <nuttx/arch.h>
#include "chip/switch.h"
#include "os_internal.h"
#include "up_internal.h"
#ifndef CONFIG_DISABLE_SIGNALS
/****************************************************************************
* Definitions
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_sigdeliver
*
* Description:
* This is the a signal handling trampoline. When a
* signal action was posted. The task context was mucked
* with and forced to branch to this location with interrupts
* disabled.
*
****************************************************************************/
void up_sigdeliver(void)
{
#ifndef CONFIG_DISABLE_SIGNALS
FAR _TCB *rtcb = (_TCB*)g_readytorun.head;
chipret_t regs[XCPTCONTEXT_REGS];
sig_deliver_t sigdeliver;
/* Save the errno. This must be preserved throughout the signal handling
* so that the the user code final gets the correct errno value (probably
* EINTR).
*/
int saved_errno = rtcb->pterrno;
up_ledon(LED_SIGNAL);
dbg("rtcb=%p sigdeliver=%p sigpendactionq.head=%p\n",
rtcb, rtcb->xcp.sigdeliver, rtcb->sigpendactionq.head);
ASSERT(rtcb->xcp.sigdeliver != NULL);
/* Save the real return state on the stack. */
z80_copystate(regs, rtcb->xcp.regs);
regs[XCPT_PC] = rtcb->xcp.saved_pc;
regs[XCPT_I] = rtcb->xcp.saved_i;
/* Get a local copy of the sigdeliver function pointer. We do this so
* that we can nullify the sigdeliver function point in the TCB and accept
* more signal deliveries while processing the current pending signals.
*/
sigdeliver = rtcb->xcp.sigdeliver;
rtcb->xcp.sigdeliver = NULL;
/* Then restore the task interrupt state. */
irqrestore(regs[XCPT_I]);
/* Deliver the signals */
sigdeliver(rtcb);
/* Output any debug messaged BEFORE restoring errno (because they may alter
* errno), then restore the original errno that is needed by the user logic
* (it is probably EINTR).
*/
dbg("Resuming\n");
rtcb->pterrno = saved_errno;
/* Then restore the correct state for this thread of
* execution.
*/
up_ledoff(LED_SIGNAL);
z80_restoreusercontext(regs);
#endif
}
#endif /* CONFIG_DISABLE_SIGNALS */

7
arch/z80/src/ez80/ez80_vectors.asm
View File

@ -40,10 +40,15 @@
NVECTORS EQU 64 ; max possible interrupt vectors
;**************************************************************************
; Global symbols used
; Global Symbols Imported
;**************************************************************************
xref _ez80_startup
;**************************************************************************
; Global Symbols Exported
;**************************************************************************
xdef _ez80_reset
xdef _ez80_initvectors
xdef _ez80_handlers