From 788d5e24ca19c6291cebd8d1ad5b5ed6abf42665 Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Wed, 10 Apr 2019 20:11:19 -0400 Subject: remove external __syscall function and last remaining users the weak version of __syscall_cp_c was using a tail call to __syscall to avoid duplicating the 6-argument syscall code inline in small static-linked programs, but now that __syscall no longer exists, the inline expansion is no longer duplication. the syscall.h machinery suppported up to 7 syscall arguments, only via an external __syscall function, but we presently have no syscall call points that actually make use of that many, and the kernel only defines 7-argument calling conventions for arm, powerpc (32-bit), and sh. if it turns out we need them in the future, they can easily be added. --- src/internal/arm/syscall.s | 15 --------------- 1 file changed, 15 deletions(-) delete mode 100644 src/internal/arm/syscall.s (limited to 'src/internal/arm') diff --git a/src/internal/arm/syscall.s b/src/internal/arm/syscall.s deleted file mode 100644 index 64dba2fc..00000000 --- a/src/internal/arm/syscall.s +++ /dev/null @@ -1,15 +0,0 @@ -.syntax unified -.global __syscall -.hidden __syscall -.type __syscall,%function -__syscall: - mov ip,sp - stmfd sp!,{r4,r5,r6,r7} - mov r7,r0 - mov r0,r1 - mov r1,r2 - mov r2,r3 - ldmfd ip,{r3,r4,r5,r6} - svc 0 - ldmfd sp!,{r4,r5,r6,r7} - bx lr -- cgit v1.2.1