search for: pvop_call_output

...OP_CALL_ARG3(x) "c" ((unsigned long)(x)) -#define PVOP_VCALL_CLOBBERS "=a" (__eax), "=d" (__edx), \ +#define PVOP_VCALL_OUTPUTS "=a" (__eax), "=d" (__edx), \ "=c" (__ecx) -#define PVOP_CALL_CLOBBERS PVOP_VCALL_CLOBBERS +#define PVOP_CALL_OUTPUTS PVOP_VCALL_OUTPUTS -#define PVOP_VCALLEE_CLOBBERS "=a" (__eax), "=d" (__edx) -#define PVOP_CALLEE_CLOBBERS PVOP_VCALLEE_CLOBBERS +#define PVOP_VCALLEE_OUTPUTS "=a" (__eax), "=d" (__edx) +#define PVOP_CALLEE_OUTPUTS PVOP_VCALLEE_OUTPUTS #define EXTR...

...sizeof(rettype) > sizeof(unsigned long)) \ + __ret = (rettype)((((u64)__edx) << 32) | __eax); \ + else \ + __ret = (rettype)(__eax & PVOP_RETMASK(rettype)); \ + __ret; \ +}) #define __PVOP_CALL(rettype, op, pre, post, ...) \ ____PVOP_CALL(rettype, op, CLBR_ANY, PVOP_CALL_OUTPUTS, \ @@ -560,11 +565,10 @@ int paravirt_disable_iospace(void); PVOP_VCALL_ARGS; \ PVOP_TEST_NULL(op); \ asm volatile(pre \ - paravirt_alt(PARAVIRT_CALL) \ + PV_SITE(PV_CALL_STR) \ post \ : call_clbr, ASM_CALL_CONSTRAINT \ - : parav...

This changes the pv ops code generation to more closely match reality. For example, instead of: callq *0xffffffff81e3a400 (pv_irq_ops.save_fl) vmlinux will now show: pushfq pop %rax nop nop nop nop nop which is what the runtime version of the code will show in most cases. This idea was suggested by Andy Lutomirski. The benefits are: - For the most common runtime cases

This changes the pv ops code generation to more closely match reality. For example, instead of: callq *0xffffffff81e3a400 (pv_irq_ops.save_fl) vmlinux will now show: pushfq pop %rax nop nop nop nop nop which is what the runtime version of the code will show in most cases. This idea was suggested by Andy Lutomirski. The benefits are: - For the most common runtime cases

...of(unsigned long)) \ + __ret = (rettype)((((u64)__edx) << 32) | __eax); \ + else \ + __ret = (rettype)(__eax & PVOP_RETMASK(rettype)); \ + __ret; \ +}) + +#define __PVOP_ALT_CALL(rettype, native, op, ...) \ + ____PVOP_ALT_CALL(rettype, native, op, CLBR_ANY, \ + PVOP_CALL_OUTPUTS, EXTRA_CLOBBERS, \ + ##__VA_ARGS__) + +#define __PVOP_ALT_CALLEESAVE(rettype, native, op, ...) \ + ____PVOP_ALT_CALL(rettype, native, op.func, CLBR_RET_REG, \ + PVOP_CALLEE_OUTPUTS, , ##__VA_ARGS__) #define ____PVOP_VCALL(op, clbr, call_clbr, extra_clbr, pre, post, ...) \ ({...