SAL_CALL() always calls through the ia64_sal function pointer. I am adding new functionality that needs the same conventions as SAL_CALL (FP regs saved/restored, sal_lock acquired, etc), but doesn't use the ia64_sal function pointer. This patch pulls the body of SAL_CALL out into a new "IA64_FW_CALL" that takes care of these calling conventions, but allows the caller to specify either ia64_sal or some other firmware entry point. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@xxxxxx> Index: work2/include/asm-ia64/sal.h =================================================================== --- work2.orig/include/asm-ia64/sal.h 2007-09-19 10:25:12.000000000 -0600 +++ work2/include/asm-ia64/sal.h 2007-09-19 10:27:15.000000000 -0600 @@ -46,25 +46,28 @@ extern spinlock_t sal_lock; /* SAL spec _requires_ eight args for each call. */ -#define __SAL_CALL(result,a0,a1,a2,a3,a4,a5,a6,a7) \ - result = (*ia64_sal)(a0,a1,a2,a3,a4,a5,a6,a7) +#define __IA64_FW_CALL(entry,result,a0,a1,a2,a3,a4,a5,a6,a7) \ + result = (*entry)(a0,a1,a2,a3,a4,a5,a6,a7) -# define SAL_CALL(result,args...) do { \ +# define IA64_FW_CALL(entry,result,args...) do { \ unsigned long __ia64_sc_flags; \ struct ia64_fpreg __ia64_sc_fr[6]; \ ia64_save_scratch_fpregs(__ia64_sc_fr); \ spin_lock_irqsave(&sal_lock, __ia64_sc_flags); \ - __SAL_CALL(result, args); \ + __IA64_FW_CALL(entry, result, args); \ spin_unlock_irqrestore(&sal_lock, __ia64_sc_flags); \ ia64_load_scratch_fpregs(__ia64_sc_fr); \ } while (0) +# define SAL_CALL(result,args...) \ + IA64_FW_CALL(ia64_sal, result, args); + # define SAL_CALL_NOLOCK(result,args...) do { \ unsigned long __ia64_scn_flags; \ struct ia64_fpreg __ia64_scn_fr[6]; \ ia64_save_scratch_fpregs(__ia64_scn_fr); \ local_irq_save(__ia64_scn_flags); \ - __SAL_CALL(result, args); \ + __IA64_FW_CALL(ia64_sal, result, args); \ local_irq_restore(__ia64_scn_flags); \ ia64_load_scratch_fpregs(__ia64_scn_fr); \ } while (0) @@ -73,7 +76,7 @@ struct ia64_fpreg __ia64_scs_fr[6]; \ ia64_save_scratch_fpregs(__ia64_scs_fr); \ preempt_disable(); \ - __SAL_CALL(result, args); \ + __IA64_FW_CALL(ia64_sal, result, args); \ preempt_enable(); \ ia64_load_scratch_fpregs(__ia64_scs_fr); \ } while (0) - To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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