Fix gfx9 trap handler to retrieve correct return address

The trap protocol changed between gfx8 and gfx9. The return address
is in trap temporaries [0,1] on gfx9 rather than [4,5] on gfx8.
Unfortunately SP3 changes the meaning of the ttmp register aliases
in gfx9, further confusing the issue.

Clean up later when LLVM assembly build is introduced to the runtime.

Change-Id: I84ea9bf3736f060dd95d0361f9d5a0f9a3576178


[ROCm/ROCR-Runtime commit: f0a1c7c4c6]

projects/rocr-runtime/runtime/hsa-runtime/core/inc/amd_gpu_shaders.h

@@ -108,6 +108,15 @@ static const unsigned int kCodeTrapHandler8[] = {
     0x00000200, 0xBF8C0F70, 0xBF900001, 0xBF8D0001, 0xBE801F70,
 };
 
+static const unsigned int kCodeTrapHandler9[] = {
+	  0xc0061b80, 0x000000c0, 0xbf8cc07f, 0xbefe0181, 0x806e886e, 0x826f806f,
+	  0x7e00026e, 0x7e02026f, 0x7e0402ff, 0x80000000, 0x7e060280, 0xdd800000,
+	  0x007f0200, 0xbf8c0f70, 0x7dd40500, 0xbf870011, 0xc0061c37, 0x00000008,
+	  0xbf8cc07f, 0x86f07070, 0xbf84000c, 0x806e906e, 0x826f806f, 0xc0021bb7,
+	  0x00000000, 0xbf8cc07f, 0x7e000270, 0x7e020271, 0x7e04026e, 0xdc700000,
+	  0x007f0200, 0xbf8c0f70, 0xbf900001, 0xbf8d0001, 0xbe801f6c, 0x00000000,
+};
+
 static const unsigned int kCodeCopyAligned8[] = {
     0xC00A0100, 0x00000000, 0xC00A0200, 0x00000010, 0xC00A0300, 0x00000020,
     0xC00A0400, 0x00000030, 0xC00A0500, 0x00000040, 0xC0020600, 0x00000050,