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crti-hw.S: Add watchdog vector, FT930 IRQ support.

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libgcc/
	* config/ft32/crti-hw.S: Add watchdog vector, FT930
	IRQ support.

From-SVN: r253276
This commit is contained in:
James Bowman 2017-09-29 01:01:52 +00:00 • committed by James Bowman
parent 8da872d9ca
commit db6601d2b6
2 changed files with 21 additions and 11 deletions
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4
libgcc/ChangeLog
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@ -1,3 +1,7 @@
2017-09-28 James Bowman <james.bowman@ftdichip.com>
* config/ft32/crti-hw.S: Add watchdog vector, FT930 IRQ support.
2017-09-26 Joseph Myers <joseph@codesourcery.com>
* config/microblaze/crti.S, config/microblaze/crtn.S,

28
libgcc/config/ft32/crti-hw.S
View file

@ -1,8 +1,8 @@
.global _start
_start:
# START Interrupt Vector Table [[
jmp __PMSIZE-4
jmp watchdog_init
jmp __PMSIZE-4 # RESET Vector
jmp interrupt_33 # Watchdog reset vector
jmp interrupt_0
jmp interrupt_1
jmp interrupt_2
@ -35,24 +35,29 @@ _start:
jmp interrupt_29
jmp interrupt_30
jmp interrupt_31
jmp __PMSIZE-8
jmp __PMSIZE-8 # Interrupt vector 32 (NMI)
# ]] END Interrupt Vector Table
codestart:
jmp init
.global _exithook
_exithook: # Debugger uses '_exithook' at 0x90 to catch program exit
return
watchdog_init:
ldk $r0,1
init:
ldk $sp,__RAMSIZE
# Disable all interrupts
ldk $r4,0x80
sta.b 0x100e3,$r4
lda $r1,0x10000
lshr $r1,$r1,20
cmp $r1,0x90
ldk $r1,0x100e3 # FT900 IRQ Control Register
jmpc z,1f
ldk $r1,0x10123 # FT930 IRQ Control Register
1:
ldk $r4,0x80
sti.b $r1,0,$r4
# Initialize DATA by copying from program memory
ldk.l $r4,__data_load_start
ldk.l $r1,__data_load_end
@ -139,6 +144,7 @@ interrupt_\i:
inth 30
inth 31
inth 32
inth 33
# On entry: r0, already saved, holds the handler function
interrupt_common:
@ -182,7 +188,7 @@ nullvector:
.section .data
.global vector_table
vector_table:
.rept 33
.rept 34
.long nullvector
.endr