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author | Rich Felker <dalias@aerifal.cx> | 2019-04-10 20:11:19 -0400 |
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committer | Rich Felker <dalias@aerifal.cx> | 2019-04-10 20:11:19 -0400 |
commit | 788d5e24ca19c6291cebd8d1ad5b5ed6abf42665 (patch) | |
tree | 1ae614424b48069950baec8ae09699d750fe3414 /src/internal/arm | |
parent | 1bcdaeee6e659f1d856717c9aa562a068f2f3bd4 (diff) | |
download | musl-788d5e24ca19c6291cebd8d1ad5b5ed6abf42665.tar.gz |
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.
Diffstat (limited to 'src/internal/arm')
-rw-r--r-- | src/internal/arm/syscall.s | 15 |
1 files changed, 0 insertions, 15 deletions
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 |