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Building the rseq basic test with gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.12) Target: powerpc-linux-gnu leads to these errors: /tmp/ccieEWxU.s: Assembler messages: /tmp/ccieEWxU.s:118: Error: syntax error; found `,', expected `(' /tmp/ccieEWxU.s:118: Error: junk at end of line: `,8' /tmp/ccieEWxU.s:121: Error: syntax error; found `,', expected `(' /tmp/ccieEWxU.s:121: Error: junk at end of line: `,8' /tmp/ccieEWxU.s:626: Error: syntax error; found `,', expected `(' /tmp/ccieEWxU.s:626: Error: junk at end of line: `,8' /tmp/ccieEWxU.s:629: Error: syntax error; found `,', expected `(' /tmp/ccieEWxU.s:629: Error: junk at end of line: `,8' /tmp/ccieEWxU.s:735: Error: syntax error; found `,', expected `(' /tmp/ccieEWxU.s:735: Error: junk at end of line: `,8' /tmp/ccieEWxU.s:738: Error: syntax error; found `,', expected `(' /tmp/ccieEWxU.s:738: Error: junk at end of line: `,8' /tmp/ccieEWxU.s:741: Error: syntax error; found `,', expected `(' /tmp/ccieEWxU.s:741: Error: junk at end of line: `,8' Makefile:581: recipe for target 'basic_percpu_ops_test.o' failed Based on discussion with Linux powerpc maintainers and review of the use of the "m" operand in powerpc kernel code, add the missing %Un%Xn (where n is operand number) to the lwz, stw, ld, and std instructions when used with "m" operands. Using "WORD" to mean either a 32-bit or 64-bit type depending on the architecture is misleading. The term "WORD" really means a 32-bit type in both 32-bit and 64-bit powerpc assembler. The intent here is to wrap load/store to intptr_t into common macros for both 32-bit and 64-bit. Rename the macros with a RSEQ_ prefix, and use the terms "INT" for always 32-bit type, and "LONG" for architecture bitness-sized type. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20220124171253.22072-10-mathieu.desnoyers@efficios.com |
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