On 2018-10-19 11:34 AM, Helge Deller wrote:
.macro shlw r, sa, t
+#if defined(CONFIG_PA20)
+ /* The PA 2.0 shift left (shlw) */
depw,z \r, 31-(\sa), 32-(\sa), \t
+#elif defined(CONFIG_PA11)
+ /* The PA 1.1 shift left (zdep) */
+ zdep \r, 31-(\sa), 32-(\sa), \t
+#else
+ #warning "Revisit shlw callers to support PA1.0"
+ /* PA 1.0: Note the r and t can NOT be the same! */
+ dep,z \r, 31-(\sa), 32-(\sa), \t
+#endif
.endm
This is not necessary. The existing define for shlw works.
The zdep and depw,z mnemonics generate the same code. The assembler
will accepts the depw,z mnemonic
when generating PA 1.x code. The zdep mnemonic is okay when generating
PA 2.0 code. If you want, change
depw,z to zdep in the current shlw macro but the binary code will be the
same.
The dep,z instruction is wrong. "z" is not a valid condition code. PA
1.0 had zdep. As far as I know, it
didn't behave differently from PA 1.1. There would have been a note in
the PA 1.1 architecture manual
if it did. PA 1.1 is forward compatible with PA 1.0.
Dave
--
John David Anglin dave.anglin@xxxxxxxx
