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      1 # r0-r3 are used as tmps, consider them call clobbered by these macros.
      2 # This uses the angel rom monitor calls.
      3 # ??? How do we use the \@ facility of .macros ???
      4 # @ is the comment char!
      5 
      6 	.macro mvi_h_gr reg, val
      7 	ldr \reg,[pc]
      8 	b . + 8
      9 	.word \val
     10 	.endm
     11 
     12 	.macro mvaddr_h_gr reg, addr
     13 	ldr \reg,[pc]
     14 	b . + 8
     15 	.word \addr
     16 	.endm
     17 
     18 	.macro start
     19 	.data
     20 failmsg:
     21 	.asciz "fail\n"
     22 passmsg:
     23 	.asciz "pass\n"
     24 	.text
     25 
     26 do_pass:
     27 	ldr r1, passmsg_addr
     28 	mov r0, #4
     29 	swi #0x123456
     30 	exit 0
     31 passmsg_addr:
     32 	.word passmsg
     33 
     34 do_fail:
     35 	ldr r1, failmsg_addr
     36 	mov r0, #4
     37 	swi #0x123456
     38 	exit 1
     39 failmsg_addr:
     40 	.word failmsg
     41 
     42 	.global _start
     43 _start:
     44 	.endm
     45 
     46 # *** Other macros know pass/fail are 4 bytes in size!  Yuck.
     47 
     48 	.macro pass
     49 	b do_pass
     50 	.endm
     51 
     52 	.macro fail
     53 	b do_fail
     54 	.endm
     55 
     56 	.macro exit rc
     57 	# ??? This works with the ARMulator but maybe not others.
     58 	#mov r0, #\rc
     59 	#swi #1
     60 	# This seems to be portable (though it ignores rc).
     61 	mov r0,#0x18
     62 	mvi_h_gr r1, 0x20026
     63 	swi #0x123456
     64 	# If that returns, punt with a sigill.
     65 	stc 0,cr0,[r0]
     66 	.endm
     67 
     68 # Other macros know this only clobbers r0.
     69 # WARNING: It also clobbers the condition codes (FIXME).
     70 	.macro test_h_gr reg, val
     71 	mvaddr_h_gr r0, \val
     72 	cmp \reg, r0
     73 	beq . + 8
     74 	fail
     75 	.endm
     76 
     77 	.macro mvi_h_cnvz c, n, v, z
     78 	mov r0, #0
     79 	.if \c
     80 	orr r0, r0, #0x20000000
     81 	.endif
     82 	.if \n
     83 	orr r0, r0, #0x80000000
     84 	.endif
     85 	.if \v
     86 	orr r0, r0, #0x10000000
     87 	.endif
     88 	.if \z
     89 	orr r0, r0, #0x40000000
     90 	.endif
     91 	mrs r1, cpsr
     92 	bic r1, r1, #0xf0000000
     93 	orr r1, r1, r0
     94 	msr cpsr, r1
     95 	# ??? nops needed
     96 	.endm
     97 
     98 # ??? Preserve condition codes?
     99 	.macro test_h_cnvz c, n, v, z
    100 	mov r0, #0
    101 	.if \c
    102 	orr r0, r0, #0x20000000
    103 	.endif
    104 	.if \n
    105 	orr r0, r0, #0x80000000
    106 	.endif
    107 	.if \v
    108 	orr r0, r0, #0x10000000
    109 	.endif
    110 	.if \z
    111 	orr r0, r0, #0x40000000
    112 	.endif
    113 	mrs r1, cpsr
    114 	and r1, r1, #0xf0000000
    115 	cmp r0, r1
    116 	beq . + 8
    117 	fail
    118 	.endm
    119