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As an IBM PowerPC hacker I'm disappointed that https://twitter.com/ppcinstructions https://twitter.com/ppcinstructions seems to have stopped publishing...
by ajdlinux 10y ago
As an IBM PowerPC hacker I'm disappointed that https://twitter.com/ppcinstructions https://twitter.com/ppcinstructions seems to have stopped publishing...
- filereaper 10y agoHaha, I've always had to look up rlwinm and its ilk no matter how many times I've looked it up previously in the ISA. Its crazy how terse PPC's instructions are, the PPC ISA book felt like reading PHD paper where as ARM's ISA manuals felt like a gentle novel. Here's a wonderful excerpt from the latest 2.07 ISA: "The following notation is used in the definitions below. When MMCR0_PMCC = 11, “PMCs” refers to PMCs 1 - 4 and “PMCj” or PMCjCE refers to “PMCj or PMCjCE, respectively, where j = 2 - 4; otherwise, “PMCs” refers to PMCs 1 - 6 and “PMCj” or PMCjCE refers to “PMCj or PMCjCE, respectively, where j = 2 - 6." Get all of that? Good, now go write code to make use of it.