search for: cap_byt

Displaying 4 results from an estimated 4 matches for "cap_byt".

Did you mean: cap_byte
2018 Dec 13
2
[PATCH] kbuild, x86: revert macros in extended asm workarounds
...#include <asm/asm.h> #include <linux/bitops.h> @@ -161,10 +161,37 @@ extern void clear_cpu_cap(struct cpuinfo_x86 *c, unsigned int bit); */ static __always_inline __pure bool _static_cpu_has(u16 bit) { - asm_volatile_goto("STATIC_CPU_HAS bitnum=%[bitnum] " - "cap_byte=\"%[cap_byte]\" " - "feature=%P[feature] t_yes=%l[t_yes] " - "t_no=%l[t_no] always=%P[always]" + asm_volatile_goto("1: jmp 6f\n" + "2:\n" + ".skip -(((5f-4f) - (2b-1b)) > 0) * " + "((5f-4f) - (2b-1b)),0x90\n&qu...
2018 Dec 13
2
[PATCH] kbuild, x86: revert macros in extended asm workarounds
...#include <asm/asm.h> #include <linux/bitops.h> @@ -161,10 +161,37 @@ extern void clear_cpu_cap(struct cpuinfo_x86 *c, unsigned int bit); */ static __always_inline __pure bool _static_cpu_has(u16 bit) { - asm_volatile_goto("STATIC_CPU_HAS bitnum=%[bitnum] " - "cap_byte=\"%[cap_byte]\" " - "feature=%P[feature] t_yes=%l[t_yes] " - "t_no=%l[t_no] always=%P[always]" + asm_volatile_goto("1: jmp 6f\n" + "2:\n" + ".skip -(((5f-4f) - (2b-1b)) > 0) * " + "((5f-4f) - (2b-1b)),0x90\n&qu...
2018 Dec 16
1
[PATCH v2] x86, kbuild: revert macrofying inline assembly code
...#include <asm/asm.h> #include <linux/bitops.h> @@ -161,10 +161,37 @@ extern void clear_cpu_cap(struct cpuinfo_x86 *c, unsigned int bit); */ static __always_inline __pure bool _static_cpu_has(u16 bit) { - asm_volatile_goto("STATIC_CPU_HAS bitnum=%[bitnum] " - "cap_byte=\"%[cap_byte]\" " - "feature=%P[feature] t_yes=%l[t_yes] " - "t_no=%l[t_no] always=%P[always]" + asm_volatile_goto("1: jmp 6f\n" + "2:\n" + ".skip -(((5f-4f) - (2b-1b)) > 0) * " + "((5f-4f) - (2b-1b)),0x90\n&qu...
2018 Dec 16
0
[PATCH] kbuild, x86: revert macros in extended asm workarounds
...ity. One thing that has caught my eye with the asm macros, which actually decreases readability, is that I can't see the macro properly expanded when I do make <filename>.s For example, I get #APP # 164 "./arch/x86/include/asm/cpufeature.h" 1 STATIC_CPU_HAS bitnum=$8 cap_byte="boot_cpu_data+35(%rip)" feature=123 t_yes=.L75 t_no=.L78 always=117 #, MEM[(const char *)&boot_cpu_data + 35B],,,, # 0 "" 2 .loc 11 164 2 view .LVU480 #NO_APP but I'd like to see the actual asm as it is really helpful when hacking on inline asm stuff. And I h...