diff options
author | Andrew Turner <andrew@FreeBSD.org> | 2015-07-02 14:54:21 +0000 |
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committer | Andrew Turner <andrew@FreeBSD.org> | 2015-07-02 14:54:21 +0000 |
commit | 74735cf1880a87da94c6fa0fdac56dd90b773818 (patch) | |
tree | 46a0a483da8bc9174498720e389c8429cf0ee5b9 /lib | |
parent | 4ed220cdd7e05fde142b9bdc1ac373e3eb37f24f (diff) | |
download | src-74735cf1880a87da94c6fa0fdac56dd90b773818.tar.gz src-74735cf1880a87da94c6fa0fdac56dd90b773818.zip |
Cleanup brk and sbrk to use the same code to find curbrk and minbrk when
both compiling for PIC and non-PIC.
Sponsored by: ABT Systems Ltd
Notes
Notes:
svn path=/head/; revision=285043
Diffstat (limited to 'lib')
-rw-r--r-- | lib/libc/aarch64/Symbol.map | 1 | ||||
-rw-r--r-- | lib/libc/aarch64/sys/brk.S | 29 | ||||
-rw-r--r-- | lib/libc/aarch64/sys/sbrk.S | 19 |
3 files changed, 13 insertions, 36 deletions
diff --git a/lib/libc/aarch64/Symbol.map b/lib/libc/aarch64/Symbol.map index d0056ef65b30..3d8ad2525596 100644 --- a/lib/libc/aarch64/Symbol.map +++ b/lib/libc/aarch64/Symbol.map @@ -28,6 +28,7 @@ FBSD_1.0 { FBSDprivate_1.0 { _set_tp; + _end; curbrk; minbrk; }; diff --git a/lib/libc/aarch64/sys/brk.S b/lib/libc/aarch64/sys/brk.S index 09167b60b00b..1e9a2156476f 100644 --- a/lib/libc/aarch64/sys/brk.S +++ b/lib/libc/aarch64/sys/brk.S @@ -32,6 +32,8 @@ __FBSDID("$FreeBSD$"); #include "SYS.h" + .globl _C_LABEL(_end) + .data .align 3 .globl _C_LABEL(minbrk) @@ -47,15 +49,8 @@ ENTRY(_brk) WEAK_REFERENCE(_brk, brk) /* Load the address of minbrk */ -#ifdef __PIC__ - adrp x2, :got:minbrk - ldr x3, [x2, #:got_lo12:minbrk] -#else - ldr x3, .Lminbrk -#endif - - /* Get the minimum allowable brk address */ - ldr x2, [x3] + adrp x3, minbrk + ldr x2, [x3, :lo12:minbrk] /* Validate the address */ cmp x0, x2 @@ -70,24 +65,12 @@ ENTRY(_brk) _SYSCALL(break) b.cs cerror -#ifdef __PIC__ - adrp x2, :got:curbrk - ldr x3, [x2, #:got_lo12:curbrk] -#else - ldr x3, .Lcurbrk -#endif - /* Store the new curbrk value */ - str x4, [x3] + adrp x2, curbrk + str x4, [x2, :lo12:curbrk] /* Return success */ mov x0, #0 ret -#ifndef __PIC__ -.Lcurbrk: - .quad _C_LABEL(curbrk) -.Lminbrk: - .quad _C_LABEL(minbrk) -#endif END(_brk) diff --git a/lib/libc/aarch64/sys/sbrk.S b/lib/libc/aarch64/sys/sbrk.S index db9d7e1f7bc8..4880cc2a8c9d 100644 --- a/lib/libc/aarch64/sys/sbrk.S +++ b/lib/libc/aarch64/sys/sbrk.S @@ -32,6 +32,8 @@ __FBSDID("$FreeBSD$"); #include "SYS.h" + .globl _C_LABEL(_end) + .data .align 3 .global _C_LABEL(curbrk) @@ -47,15 +49,10 @@ ENTRY(_sbrk) WEAK_REFERENCE(_sbrk, sbrk) /* Load the address of curbrk */ -#ifdef __PIC__ - adrp x2, :got:curbrk - ldr x3, [x2, #:got_lo12:curbrk] -#else - ldr x3, .Lcurbrk -#endif + adrp x3, curbrk /* Get the current brk address */ - ldr x2, [x3] + ldr x2, [x3, :lo12:curbrk] /* Calculate the new value */ add x0, x2, x0 @@ -66,14 +63,10 @@ ENTRY(_sbrk) b.cs cerror /* Load the old value to return */ - ldr x0, [x3] + ldr x0, [x3, :lo12:curbrk] /* Store the new curbrk value */ - str x4, [x3] + str x4, [x3, :lo12:curbrk] ret -#ifndef __PIC__ -.Lcurbrk: - .quad _C_LABEL(curbrk) -#endif END(_sbrk) |