Changes between Version 7 and Version 8 of GcnInstrsSopp

Timestamp:

06/04/17 14:00:29 (6 years ago)

Author:

trac

Comment:

--

GcnInstrsSopp

@@ -331 +331 @@
 Syntax: S_ENDPGM<br />
 Description: End program.</p>
+<h4>S_ENDPGM_SAVED</h4>
+<p>Opcode: 27 (0x1b) only for GCN 1.2<br />
+Syntax: S_ENDPGM_SAVED<br />
+Description: End of program; signal that a wave has been saved by the context-switch trap handler, and
+terminate wavefront. The hardware implicitly executes S_WAITCNT 0 before executing this
+instruction. Use S_ENDPGM in all cases unless you are executing the context-switch save
+handler. (from ISA manual)</p>
 <h4>S_ICACHE_INV</h4>
 <p>Opcode: 19 (0x13)<br />
@@ -368 +375 @@
 Syntax: S_SENDMSGHALT SENDMSG(MSG, GS_OP, STREAMID)<br />
 Description: Send message and halt.</p>
+<h4>S_SET_GPR_IDX_MODE</h4>
+<p>Opcode: 29 (0x1d) only for GCN 1.2<br />
+Syntax: S_SET_GPR_IDX_MODE SIMM16<br />
+Description: Set GPR indexing mode (12-15 bits in MO).<br />
+Operation:<br />
+<code>M0 = (M0 &amp; 0xffff0fff) | ((SIMM16 &amp; 15)&lt;&lt;12)</code></p>
+<h4>S_SET_GPR_IDX_OFF</h4>
+<p>Opcode: 28 (0x1c) only for GCN 1.2<br />
+Syntax: S_SET_GPR_IDX_OFF<br />
+Description: Disables GPR indexing.<br />
+Operation:<br />
+<code>MODE = (MODE &amp; ~(1U&lt;&lt;27))</code></p>
 <h4>S_SETHALT</h4>
 <p>Opcode: 13 (0xd)<br />