mirror of
https://github.com/rhasspy/espeak-ng.git
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jonsd
614e05138f
Moved the Windows build files together with DOS and others into a new directory: "platforms". git-svn-id: https://espeak.svn.sourceforge.net/svnroot/espeak/trunk@76 d46cf337-b52f-0410-862d-fd96e6ae7743
128 lines
2.3 KiB
Plaintext
128 lines
2.3 KiB
Plaintext
; 32 bit version
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; SWI numbers
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OS_File * &8
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OS_Module * &1e
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XOS_AddCallBack * &20054
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XOS_RemoveCallBack * &2005f
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GET h.RegNames
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EXPORT DMA_Handler
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EXPORT AddSineWaves
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IMPORT |callback_entry|
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IMPORT |sound_entry|
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IMPORT |sin_tab|
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AREA Assemb , CODE, READONLY
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; pointers to data items
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ADR_callback_entry
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DCD callback_entry
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ADR_sound_entry
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DCD sound_entry
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ADR_sin_tab
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DCD sin_tab
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DMA_Handler
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;**********
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; fill the sound buffer of the linear sound handler
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; preserve r11,r12,r13 (fp,ip,sp)
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MOV r5,ip ; need to save ip
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MOV ip,sp ;set up a stack
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STMFD sp!, {fp,ip,lr}
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STMFD sp!, {r5}
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MOV r12,r0 ; put the module_data word in r12
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BL sound_entry ; call C function through veneer in CMHG
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; returns with r0=1 set callback, r1=module_data address
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CMP r0,#1
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BNE DMA_return
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;---------
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TEQ pc,pc
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MRSEQ r8, CPSR ; 32bit version of call SWI from IRQ mode
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MOVNE r8,pc
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ORR r9,r8,#3
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MSREQ CPSR_c, r9
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TEQNEP r9,#0
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NOP
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STR r14, [r13,#-4]!
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;---------
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; r1=module_data address
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LDR r0,ADR_callback_entry ; call C function through CMHG veneer
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SWI XOS_AddCallBack
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;---------
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LDR r14, [r13],#4 ; 32bit version of 'reenter original processor mode'
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TEQ pc,pc
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MSREQ CPSR_c, r8
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TEQNEP r8,#0
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NOP
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;---------
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DMA_return
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LDMFD sp!,{ip}
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LDMFD sp, {fp,sp,pc}
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AddSineWaves
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;total += AddSineWaves(waveph, h_switch_sign, maxh, harmspect);
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; using this assembler routine increases overall speed by about 7.5%
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; define the USE_ASSEMBLER_1 macro in speech.h to enable this routine
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; input: r0=waveph r1=h_switch_sign r2=maxh r3=harmspect
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; local: r5=sin_tab r6=total r7=h r8=theta
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; return(total)
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MOV ip,sp
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STMFD sp!, {r5-r9,ip,lr}
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LDR r5,ADR_sin_tab
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MOV r6,#0 ; total = 0
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MOV r0,r0,LSL #16
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MOV r8,r0 ; theta = waveph
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MOV r7,#1
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as1
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MOV ip,r8,LSR #21
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LDR r9,[r5,ip,LSL #1] ; sin_tab[theta >> 5]
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MOV r9,r9,LSL #16
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MOV r9,r9,ASR #16
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LDR ip,[r3,r7,LSL #2] ; harmspect[h]
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MLA r6,r9,ip,r6
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ADD r8,r8,r0 ; theta += waveph
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ADD r7,r7,#1 ; h++
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CMP r7,r1
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BLE as1
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RSB r6,r6,#0 ; change sign
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as2
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MOV ip,r8,LSR #21
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LDR r9,[r5,ip,LSL #1] ; sin_tab[theta >> 5]
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MOV r9,r9,LSL #16
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MOV r9,r9,ASR #16
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LDR ip,[r3,r7,LSL #2] ; harmspect[h]
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MLA r6,r9,ip,r6
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ADD r8,r8,r0 ; theta += waveph
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ADD r7,r7,#1 ; h++
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CMP r7,r2
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BLE as2
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MOV r0,r6
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LDMFD sp, {r5-r9,sp,pc}
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END
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