zlib/arm/inffastS.s

133 	ldr		ip, state_lencode		// lencode
137 	str		ip, [sp, #40]			// save lencode
138 	sub		ip, r6, #1				// window-1
140 	str		ip, windowm1_loc		// store window-1
172 	ldr		ip, [sp, #40]			// restore lencode
193 	ldr		ip, [sp, #40]			// restore lencode
198 	ldrb	r2, [ip,r3,asl #2]		// op = (unsigned)(this.bits);
199 	add		r3, ip, r3, asl #2		// r3 = this
200 	ldrb	ip, [r3, #1]				// ip = this.bits
204 	mov		hold, hold, lsr ip			// hold >>= this.bits
205 	rsb		bits, ip, bits				// bits -= this.bits
228 	ldr		ip, end_loc					// ip = end
236 	cmp		out, ip						// compare out vs end
238 	movcs	r2, ip						// if out<end, r2=end
239 	addcc	r3, ip, #256				// if out>=end, r3 = end+256
250 	rsb		ip, bits, #32				// 32-bits
252     lsr 	hold, hold, ip				// logical shift right by (32-bits), hold now only keeps the bits LSBs
268 	rsb		ip, r2, #32					// 32-op
270 	add		r6, r1, r3, lsr ip			// len += (unsigned)hold & ((1U << op) - 1);
290 	ldrb	ip, [r2, distcode]			// op
292 	tst		ip, #16						// op vs 16
297 	tst		ip, #64						//
309 	rsb		r2, ip, #32					// 32-op
310 	ror		r3, hold, ip				// hold<<(32-op)
320 	mov		ip, r2						// op
327 	and		r2, ip, #15					// op &= 15;
337 	rsb		ip, r2, #32					// (32-op)
339 	add		r3, r1, r3, lsr ip			// dist += (unsigned)hold & ((1U << op) - 1);
352 	ldr		ip, beg_loc					// beg
354 	rsb		r3, ip, out					// (out - beg);
372 	ldr		ip, wsize_loc					// wsize
374 	rsb		r3, r1, ip						// wsize - op
375 	ldr		ip, windowm1_loc				// window - 1
376 	add		r2, ip, r3						// from = window - 1 + wsize - op : setup for using PUP(from)
485 	ldrb	ip, [r2, #1]!				// 		PUP(from);
487 	strb	ip, [out, #1]!				//		PUP(out) = PUP(from);
500 	ldr		ip, windowm1_loc			// window-1
503 	add		r2, ip, r3					// r2 = from = wsize+write-op+window-1;
535 	ldr		ip, windowm1_loc		// window-1
538 	add		r2, ip, r3				// r2 = from = window+write-op-1
543 	ldrb	ip, [r2, #1]!			// PUP(from)
545 	strb	ip, [out, #1]!			// PUP(out) = PUP(from);