DSPSpy: Require user to specify a test_main label

This makes the point where execution starts more obvious compared to a start_of_test label at the end of the include, and allows putting other functions at the start of the file.  This change also modifies the existing tests to build with this change.

Source/DSPSpy/tests/accelerator_loop_test.ds

@@ -1,6 +1,8 @@
 incdir  "tests"
 include "dsp_base.inc"
 
+test_main:
+
 ; Test parameters
 lri $AC0.M, #0x0000 ; start
 lri $AC0.L, #0x0000 ; start

Source/DSPSpy/tests/accelerator_test.ds

@@ -2,7 +2,6 @@
 ; See https://github.com/dolphin-emu/dolphin/pull/5997
 incdir  "tests"
 include "dsp_base.inc"
-jmp test_main
 
 ; Writes the passed format, start and end addresses to the accelerator registers,
 ; then reads them back to registers.

Source/DSPSpy/tests/andc_ls_test.ds

@@ -5,7 +5,7 @@ include "dsp_base.inc"
 ;    
 ;    3d80      andc'ls     $AC1.M : $AX0.L, $AC0.M
 
-
+test_main:
 	clr $ACC0
 	clr $ACC1
 	lri $AX0.L, #0x0000
@@ -14,7 +14,7 @@ include "dsp_base.inc"
 
 	lri $AC0.M, #0x0004
 	lri $AC1.M, #0x1234
-	andc'ls $AC1.M : $AX0.L, $AC0.M
+	cw 0x3d80 ; andc'ls $AC1.M : $AX0.L, $AC0.M
 
 	call send_back
 

Source/DSPSpy/tests/arith_test.ds

@@ -2,6 +2,8 @@
 incdir  "tests"
 include "dsp_base.inc"
 
+test_main:
+
 clr $acc0
 tst $acc0
 

Source/DSPSpy/tests/cr_test.ds

@@ -12,6 +12,7 @@ TEST_ADDR: equ 0xFFA0 ; 0x0000
 TEST_MEM: equ 0x00A0 ; 0x0000
 TEST_MEM_2: equ 0x01A0 ; 0x0100
 
+test_main:
 	LRI $AC0.L, #0xf00f
 	SR @TEST_REG, $AC0.L
 	SR @TEST_MEM, $AC0.L

Source/DSPSpy/tests/dr_test.ds

@@ -27,6 +27,7 @@ include "dsp_base.inc"
 ; And thus it's tricky to implement in software too :p
 
 ; test using indexing register 1 - 0 is used in send_back
+test_main:
 lri $AR1, #16
 lri $IX1, #32
 lri $WR1, #0

Source/DSPSpy/tests/dsp_base_noirq.inc

@@ -97,7 +97,7 @@ ORG 0x10
 	lrri	$ac1.m, @$ar0
 	lr		$ar0, @REGS_BASE
 
-	jmp		start_of_test
+	jmp		test_main
 
 ; This is where we jump when we're done testing, see above.
 ; We just fall into a loop, playing dead until someone resets the DSP.
@@ -281,6 +281,3 @@ dma_copy:
 	lr	$sr, @(REGS_BASE+19)
 
 	ret		; from send_back
-
-; Obviously this must be included directly before your test code
-start_of_test:

Source/DSPSpy/tests/dsp_test.ds

@@ -6,13 +6,14 @@ include "dsp_base.inc"
         
 ;  We can call send_back at any time to send data back to the PowerPC.
 
-       lri $AC0.M, #0x1000	
-	call send_back
+test_main:
+  lri $AC0.M, #0x1000
+  call send_back
 
-       set40
-       lri $AC0.M, #0x1000
-       set16
-	call send_back
+  set40
+  lri $AC0.M, #0x1000
+  set16
+  call send_back
 
 ; We're done, DO NOT DELETE THIS LINE
-	jmp end_of_test
+  jmp end_of_test

Source/DSPSpy/tests/ir_test.ds

@@ -30,7 +30,7 @@ include "dsp_base.inc"
 
 ; I really don't know how the above could possibly be efficiently implemented in hardware.
 ; And thus it's tricky to implement in software too :p
-
+test_main:
 ; test using indexing register 1 - 0 is used in send_back
 lri $AR1, #16
 lri $IX1, #32

Source/DSPSpy/tests/ld_test.ds

@@ -2,6 +2,7 @@
 incdir  "tests"
 include "dsp_base.inc"
 
+test_main:
 lri $AR0, #0x001c
 lri $AR1, #0x001d
 lri $AR2, #0x001e

Source/DSPSpy/tests/less_test.ds

@@ -1,6 +1,7 @@
 incdir "tests"
 include "dsp_base.inc"
 
+test_main:
 	CLR $acc0
 	CLR $acc1
 	LRI $ac0.h, #0x0050

Source/DSPSpy/tests/mul_test.ds

@@ -2,8 +2,9 @@
 incdir  "tests"
 include "dsp_base.inc"
 
-; Results is in capitails like this: UNSIGNED
+; Results are in capitals like this: UNSIGNED
 
+test_main:
 CLR15
 
 ; Test MULXMVZ - SET15

Source/DSPSpy/tests/neg_test.ds

@@ -2,6 +2,7 @@
 incdir  "tests"
 include "dsp_base.inc"
 
+test_main:
 clr $ACC0
 neg $ACC0
 

Source/DSPSpy/tests/op_test.ds

@@ -10,6 +10,7 @@ include "dsp_base.inc"
 // 0x02cb is the same opcode, but arithmetic.
 // We'll call it  asrn, no arguments.
 
+test_main:
 clr $ACC0
 clr $ACC1
 lri $AC0.H, #0

Source/DSPSpy/tests/reg_mask_test.ds

@@ -1,6 +1,7 @@
 incdir "tests"
 include "dsp_base.inc"
 
+test_main:
 ; Test what happens various values are written to every register
 	LRI $ar0, #0xffff
 	CALL set_all_regs

Source/DSPSpy/tests/unk_regs_test.ds

@@ -2,7 +2,7 @@ incdir "tests"
 include "dsp_base.inc"
 
 ;    Reads regs from 0xFF80 to 0xFF8D and sends them back
-
+test_main:
        lr $AC0.M, @0xff80	
 	call send_back