This article describes some notes about z/Architecturewith a focus on the ELF ABI and ELF linkers. An lld/ELF patch sparked mymotivation to write this post.z/Architectureis a mainframe computer architecture supporting 24-bit, 31-bit, and64-bit addressing modes. It is the latest generation in a lineagestretching back to the 1964 with IBM System/360 (32-bit general purposeregisters and 24-bit addressing). This lineage includes System/370(1970), System/370 Extended Architecture (1983), Enterprise SystemsArchitecture/370 (1988), and Enterprise Systems Architecture/390 (1990).For a deeper dive into
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