diff --git a/libc/arch-arm/cortex-a15/bionic/strcat.S b/libc/arch-arm/cortex-a15/bionic/strcat.S
index b95be94..b174aa9 100644
--- a/libc/arch-arm/cortex-a15/bionic/strcat.S
+++ b/libc/arch-arm/cortex-a15/bionic/strcat.S
@@ -70,7 +70,7 @@
 
     .macro m_scan_byte
     ldrb    r3, [r0]
-    cbz     r3, strcat_r0_scan_done
+    cbz     r3, .L_strcat_r0_scan_done
     add     r0, #1
     .endm // m_scan_byte
 
@@ -84,10 +84,10 @@
     // Quick check to see if src is empty.
     ldrb    r2, [r1]
     pld     [r1, #0]
-    cbnz    r2, strcat_continue
+    cbnz    r2, .L_strcat_continue
     bx      lr
 
-strcat_continue:
+.L_strcat_continue:
     // To speed up really small dst strings, unroll checking the first 4 bytes.
     m_push
     m_scan_byte
@@ -96,95 +96,95 @@
     m_scan_byte
 
     ands    r3, r0, #7
-    beq     strcat_mainloop
+    beq     .L_strcat_mainloop
 
     // Align to a double word (64 bits).
     rsb     r3, r3, #8
     lsls    ip, r3, #31
-    beq     strcat_align_to_32
+    beq     .L_strcat_align_to_32
 
     ldrb    r5, [r0]
-    cbz     r5, strcat_r0_scan_done
+    cbz     r5, .L_strcat_r0_scan_done
     add     r0, r0, #1
 
-strcat_align_to_32:
-    bcc     strcat_align_to_64
+.L_strcat_align_to_32:
+    bcc     .L_strcat_align_to_64
 
     ldrb    r2, [r0]
-    cbz     r2, strcat_r0_scan_done
+    cbz     r2, .L_strcat_r0_scan_done
     add     r0, r0, #1
     ldrb    r4, [r0]
-    cbz     r4, strcat_r0_scan_done
+    cbz     r4, .L_strcat_r0_scan_done
     add     r0, r0, #1
 
-strcat_align_to_64:
+.L_strcat_align_to_64:
     tst     r3, #4
-    beq     strcat_mainloop
+    beq     .L_strcat_mainloop
     ldr     r3, [r0], #4
 
     sub     ip, r3, #0x01010101
     bic     ip, ip, r3
     ands    ip, ip, #0x80808080
-    bne     strcat_zero_in_second_register
-    b       strcat_mainloop
+    bne     .L_strcat_zero_in_second_register
+    b       .L_strcat_mainloop
 
-strcat_r0_scan_done:
+.L_strcat_r0_scan_done:
     // For short copies, hard-code checking the first 8 bytes since this
     // new code doesn't win until after about 8 bytes.
-    m_copy_byte reg=r2, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r3, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r4, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r5, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r2, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r3, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r4, cmd=cbz, label=strcpy_finish
-    m_copy_byte reg=r5, cmd=cbnz, label=strcpy_continue
+    m_copy_byte reg=r2, cmd=cbz, label=.L_strcpy_finish
+    m_copy_byte reg=r3, cmd=cbz, label=.L_strcpy_finish
+    m_copy_byte reg=r4, cmd=cbz, label=.L_strcpy_finish
+    m_copy_byte reg=r5, cmd=cbz, label=.L_strcpy_finish
+    m_copy_byte reg=r2, cmd=cbz, label=.L_strcpy_finish
+    m_copy_byte reg=r3, cmd=cbz, label=.L_strcpy_finish
+    m_copy_byte reg=r4, cmd=cbz, label=.L_strcpy_finish
+    m_copy_byte reg=r5, cmd=cbnz, label=.L_strcpy_continue
 
-strcpy_finish:
+.L_strcpy_finish:
     m_pop
 
-strcpy_continue:
+.L_strcpy_continue:
     ands    r3, r0, #7
-    beq     strcpy_check_src_align
+    beq     .L_strcpy_check_src_align
 
     // Align to a double word (64 bits).
     rsb     r3, r3, #8
     lsls    ip, r3, #31
-    beq     strcpy_align_to_32
+    beq     .L_strcpy_align_to_32
 
     ldrb    r2, [r1], #1
     strb    r2, [r0], #1
-    cbz     r2, strcpy_complete
+    cbz     r2, .L_strcpy_complete
 
-strcpy_align_to_32:
-    bcc     strcpy_align_to_64
+.L_strcpy_align_to_32:
+    bcc     .L_strcpy_align_to_64
 
     ldrb    r2, [r1], #1
     strb    r2, [r0], #1
-    cbz     r2, strcpy_complete
+    cbz     r2, .L_strcpy_complete
     ldrb    r2, [r1], #1
     strb    r2, [r0], #1
-    cbz     r2, strcpy_complete
+    cbz     r2, .L_strcpy_complete
 
-strcpy_align_to_64:
+.L_strcpy_align_to_64:
     tst     r3, #4
-    beq     strcpy_check_src_align
+    beq     .L_strcpy_check_src_align
     ldr     r2, [r1], #4
 
     sub     ip, r2, #0x01010101
     bic     ip, ip, r2
     ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
+    bne     .L_strcpy_zero_in_first_register
     str     r2, [r0], #4
 
-strcpy_check_src_align:
+.L_strcpy_check_src_align:
     // At this point dst is aligned to a double word, check if src
     // is also aligned to a double word.
     ands    r3, r1, #7
-    bne     strcpy_unaligned_copy
+    bne     .L_strcpy_unaligned_copy
 
     .p2align 2
-strcpy_mainloop:
+.L_strcpy_mainloop:
     ldrd    r2, r3, [r1], #8
 
     pld     [r1, #64]
@@ -192,128 +192,128 @@
     sub     ip, r2, #0x01010101
     bic     ip, ip, r2
     ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
+    bne     .L_strcpy_zero_in_first_register
 
     sub     ip, r3, #0x01010101
     bic     ip, ip, r3
     ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_second_register
+    bne     .L_strcpy_zero_in_second_register
 
     strd    r2, r3, [r0], #8
-    b       strcpy_mainloop
+    b       .L_strcpy_mainloop
 
-strcpy_complete:
+.L_strcpy_complete:
     m_pop
 
-strcpy_zero_in_first_register:
+.L_strcpy_zero_in_first_register:
     lsls    lr, ip, #17
-    bne     strcpy_copy1byte
-    bcs     strcpy_copy2bytes
+    bne     .L_strcpy_copy1byte
+    bcs     .L_strcpy_copy2bytes
     lsls    ip, ip, #1
-    bne     strcpy_copy3bytes
+    bne     .L_strcpy_copy3bytes
 
-strcpy_copy4bytes:
+.L_strcpy_copy4bytes:
     // Copy 4 bytes to the destiniation.
     str     r2, [r0]
     m_pop
 
-strcpy_copy1byte:
+.L_strcpy_copy1byte:
     strb    r2, [r0]
     m_pop
 
-strcpy_copy2bytes:
+.L_strcpy_copy2bytes:
     strh    r2, [r0]
     m_pop
 
-strcpy_copy3bytes:
+.L_strcpy_copy3bytes:
     strh    r2, [r0], #2
     lsr     r2, #16
     strb    r2, [r0]
     m_pop
 
-strcpy_zero_in_second_register:
+.L_strcpy_zero_in_second_register:
     lsls    lr, ip, #17
-    bne     strcpy_copy5bytes
-    bcs     strcpy_copy6bytes
+    bne     .L_strcpy_copy5bytes
+    bcs     .L_strcpy_copy6bytes
     lsls    ip, ip, #1
-    bne     strcpy_copy7bytes
+    bne     .L_strcpy_copy7bytes
 
     // Copy 8 bytes to the destination.
     strd    r2, r3, [r0]
     m_pop
 
-strcpy_copy5bytes:
+.L_strcpy_copy5bytes:
     str     r2, [r0], #4
     strb    r3, [r0]
     m_pop
 
-strcpy_copy6bytes:
+.L_strcpy_copy6bytes:
     str     r2, [r0], #4
     strh    r3, [r0]
     m_pop
 
-strcpy_copy7bytes:
+.L_strcpy_copy7bytes:
     str     r2, [r0], #4
     strh    r3, [r0], #2
     lsr     r3, #16
     strb    r3, [r0]
     m_pop
 
-strcpy_unaligned_copy:
+.L_strcpy_unaligned_copy:
     // Dst is aligned to a double word, while src is at an unknown alignment.
     // There are 7 different versions of the unaligned copy code
     // to prevent overreading the src. The mainloop of every single version
     // will store 64 bits per loop. The difference is how much of src can
     // be read without potentially crossing a page boundary.
     tbb     [pc, r3]
-strcpy_unaligned_branchtable:
+.L_strcpy_unaligned_branchtable:
     .byte 0
-    .byte ((strcpy_unalign7 - strcpy_unaligned_branchtable)/2)
-    .byte ((strcpy_unalign6 - strcpy_unaligned_branchtable)/2)
-    .byte ((strcpy_unalign5 - strcpy_unaligned_branchtable)/2)
-    .byte ((strcpy_unalign4 - strcpy_unaligned_branchtable)/2)
-    .byte ((strcpy_unalign3 - strcpy_unaligned_branchtable)/2)
-    .byte ((strcpy_unalign2 - strcpy_unaligned_branchtable)/2)
-    .byte ((strcpy_unalign1 - strcpy_unaligned_branchtable)/2)
+    .byte ((.L_strcpy_unalign7 - .L_strcpy_unaligned_branchtable)/2)
+    .byte ((.L_strcpy_unalign6 - .L_strcpy_unaligned_branchtable)/2)
+    .byte ((.L_strcpy_unalign5 - .L_strcpy_unaligned_branchtable)/2)
+    .byte ((.L_strcpy_unalign4 - .L_strcpy_unaligned_branchtable)/2)
+    .byte ((.L_strcpy_unalign3 - .L_strcpy_unaligned_branchtable)/2)
+    .byte ((.L_strcpy_unalign2 - .L_strcpy_unaligned_branchtable)/2)
+    .byte ((.L_strcpy_unalign1 - .L_strcpy_unaligned_branchtable)/2)
 
     .p2align 2
     // Can read 7 bytes before possibly crossing a page.
-strcpy_unalign7:
+.L_strcpy_unalign7:
     ldr     r2, [r1], #4
 
     sub     ip, r2, #0x01010101
     bic     ip, ip, r2
     ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
+    bne     .L_strcpy_zero_in_first_register
 
     ldrb    r3, [r1]
-    cbz     r3, strcpy_unalign7_copy5bytes
+    cbz     r3, .L_strcpy_unalign7_copy5bytes
     ldrb    r4, [r1, #1]
-    cbz     r4, strcpy_unalign7_copy6bytes
+    cbz     r4, .L_strcpy_unalign7_copy6bytes
     ldrb    r5, [r1, #2]
-    cbz     r5, strcpy_unalign7_copy7bytes
+    cbz     r5, .L_strcpy_unalign7_copy7bytes
 
     ldr     r3, [r1], #4
     pld     [r1, #64]
 
     lsrs    ip, r3, #24
     strd    r2, r3, [r0], #8
-    beq     strcpy_unalign_return
-    b       strcpy_unalign7
+    beq     .L_strcpy_unalign_return
+    b       .L_strcpy_unalign7
 
-strcpy_unalign7_copy5bytes:
+.L_strcpy_unalign7_copy5bytes:
     str     r2, [r0], #4
     strb    r3, [r0]
-strcpy_unalign_return:
+.L_strcpy_unalign_return:
     m_pop
 
-strcpy_unalign7_copy6bytes:
+.L_strcpy_unalign7_copy6bytes:
     str     r2, [r0], #4
     strb    r3, [r0], #1
     strb    r4, [r0], #1
     m_pop
 
-strcpy_unalign7_copy7bytes:
+.L_strcpy_unalign7_copy7bytes:
     str     r2, [r0], #4
     strb    r3, [r0], #1
     strb    r4, [r0], #1
@@ -322,41 +322,41 @@
 
     .p2align 2
     // Can read 6 bytes before possibly crossing a page.
-strcpy_unalign6:
+.L_strcpy_unalign6:
     ldr     r2, [r1], #4
 
     sub     ip, r2, #0x01010101
     bic     ip, ip, r2
     ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
+    bne     .L_strcpy_zero_in_first_register
 
     ldrb    r4, [r1]
-    cbz     r4, strcpy_unalign_copy5bytes
+    cbz     r4, .L_strcpy_unalign_copy5bytes
     ldrb    r5, [r1, #1]
-    cbz     r5, strcpy_unalign_copy6bytes
+    cbz     r5, .L_strcpy_unalign_copy6bytes
 
     ldr     r3, [r1], #4
     pld     [r1, #64]
 
     tst     r3, #0xff0000
-    beq     strcpy_copy7bytes
+    beq     .L_strcpy_copy7bytes
     lsrs    ip, r3, #24
     strd    r2, r3, [r0], #8
-    beq     strcpy_unalign_return
-    b       strcpy_unalign6
+    beq     .L_strcpy_unalign_return
+    b       .L_strcpy_unalign6
 
     .p2align 2
     // Can read 5 bytes before possibly crossing a page.
-strcpy_unalign5:
+.L_strcpy_unalign5:
     ldr     r2, [r1], #4
 
     sub     ip, r2, #0x01010101
     bic     ip, ip, r2
     ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
+    bne     .L_strcpy_zero_in_first_register
 
     ldrb    r4, [r1]
-    cbz     r4, strcpy_unalign_copy5bytes
+    cbz     r4, .L_strcpy_unalign_copy5bytes
 
     ldr     r3, [r1], #4
 
@@ -365,17 +365,17 @@
     sub     ip, r3, #0x01010101
     bic     ip, ip, r3
     ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_second_register
+    bne     .L_strcpy_zero_in_second_register
 
     strd    r2, r3, [r0], #8
-    b       strcpy_unalign5
+    b       .L_strcpy_unalign5
 
-strcpy_unalign_copy5bytes:
+.L_strcpy_unalign_copy5bytes:
     str     r2, [r0], #4
     strb    r4, [r0]
     m_pop
 
-strcpy_unalign_copy6bytes:
+.L_strcpy_unalign_copy6bytes:
     str     r2, [r0], #4
     strb    r4, [r0], #1
     strb    r5, [r0]
@@ -383,13 +383,13 @@
 
     .p2align 2
     // Can read 4 bytes before possibly crossing a page.
-strcpy_unalign4:
+.L_strcpy_unalign4:
     ldr     r2, [r1], #4
 
     sub     ip, r2, #0x01010101
     bic     ip, ip, r2
     ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
+    bne     .L_strcpy_zero_in_first_register
 
     ldr     r3, [r1], #4
     pld     [r1, #64]
@@ -397,20 +397,20 @@
     sub     ip, r3, #0x01010101
     bic     ip, ip, r3
     ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_second_register
+    bne     .L_strcpy_zero_in_second_register
 
     strd    r2, r3, [r0], #8
-    b       strcpy_unalign4
+    b       .L_strcpy_unalign4
 
     .p2align 2
     // Can read 3 bytes before possibly crossing a page.
-strcpy_unalign3:
+.L_strcpy_unalign3:
     ldrb    r2, [r1]
-    cbz     r2, strcpy_unalign3_copy1byte
+    cbz     r2, .L_strcpy_unalign3_copy1byte
     ldrb    r3, [r1, #1]
-    cbz     r3, strcpy_unalign3_copy2bytes
+    cbz     r3, .L_strcpy_unalign3_copy2bytes
     ldrb    r4, [r1, #2]
-    cbz     r4, strcpy_unalign3_copy3bytes
+    cbz     r4, .L_strcpy_unalign3_copy3bytes
 
     ldr     r2, [r1], #4
     ldr     r3, [r1], #4
@@ -418,26 +418,26 @@
     pld     [r1, #64]
 
     lsrs    lr, r2, #24
-    beq     strcpy_copy4bytes
+    beq     .L_strcpy_copy4bytes
 
     sub     ip, r3, #0x01010101
     bic     ip, ip, r3
     ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_second_register
+    bne     .L_strcpy_zero_in_second_register
 
     strd    r2, r3, [r0], #8
-    b       strcpy_unalign3
+    b       .L_strcpy_unalign3
 
-strcpy_unalign3_copy1byte:
+.L_strcpy_unalign3_copy1byte:
     strb    r2, [r0]
     m_pop
 
-strcpy_unalign3_copy2bytes:
+.L_strcpy_unalign3_copy2bytes:
     strb    r2, [r0], #1
     strb    r3, [r0]
     m_pop
 
-strcpy_unalign3_copy3bytes:
+.L_strcpy_unalign3_copy3bytes:
     strb    r2, [r0], #1
     strb    r3, [r0], #1
     strb    r4, [r0]
@@ -445,34 +445,34 @@
 
     .p2align 2
     // Can read 2 bytes before possibly crossing a page.
-strcpy_unalign2:
+.L_strcpy_unalign2:
     ldrb    r2, [r1]
-    cbz     r2, strcpy_unalign_copy1byte
+    cbz     r2, .L_strcpy_unalign_copy1byte
     ldrb    r4, [r1, #1]
-    cbz     r4, strcpy_unalign_copy2bytes
+    cbz     r4, .L_strcpy_unalign_copy2bytes
 
     ldr     r2, [r1], #4
     ldr     r3, [r1], #4
     pld     [r1, #64]
 
     tst     r2, #0xff0000
-    beq     strcpy_copy3bytes
+    beq     .L_strcpy_copy3bytes
     lsrs    ip, r2, #24
-    beq     strcpy_copy4bytes
+    beq     .L_strcpy_copy4bytes
 
     sub     ip, r3, #0x01010101
     bic     ip, ip, r3
     ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_second_register
+    bne     .L_strcpy_zero_in_second_register
 
     strd    r2, r3, [r0], #8
-    b       strcpy_unalign2
+    b       .L_strcpy_unalign2
 
     .p2align 2
     // Can read 1 byte before possibly crossing a page.
-strcpy_unalign1:
+.L_strcpy_unalign1:
     ldrb    r2, [r1]
-    cbz     r2, strcpy_unalign_copy1byte
+    cbz     r2, .L_strcpy_unalign_copy1byte
 
     ldr     r2, [r1], #4
     ldr     r3, [r1], #4
@@ -482,27 +482,27 @@
     sub     ip, r2, #0x01010101
     bic     ip, ip, r2
     ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_first_register
+    bne     .L_strcpy_zero_in_first_register
 
     sub     ip, r3, #0x01010101
     bic     ip, ip, r3
     ands    ip, ip, #0x80808080
-    bne     strcpy_zero_in_second_register
+    bne     .L_strcpy_zero_in_second_register
 
     strd    r2, r3, [r0], #8
-    b       strcpy_unalign1
+    b       .L_strcpy_unalign1
 
-strcpy_unalign_copy1byte:
+.L_strcpy_unalign_copy1byte:
     strb    r2, [r0]
     m_pop
 
-strcpy_unalign_copy2bytes:
+.L_strcpy_unalign_copy2bytes:
     strb    r2, [r0], #1
     strb    r4, [r0]
     m_pop
 
     .p2align 2
-strcat_mainloop:
+.L_strcat_mainloop:
     ldrd    r2, r3, [r0], #8
 
     pld     [r0, #64]
@@ -510,59 +510,59 @@
     sub     ip, r2, #0x01010101
     bic     ip, ip, r2
     ands    ip, ip, #0x80808080
-    bne     strcat_zero_in_first_register
+    bne     .L_strcat_zero_in_first_register
 
     sub     ip, r3, #0x01010101
     bic     ip, ip, r3
     ands    ip, ip, #0x80808080
-    bne     strcat_zero_in_second_register
-    b       strcat_mainloop
+    bne     .L_strcat_zero_in_second_register
+    b       .L_strcat_mainloop
 
-strcat_zero_in_first_register:
+.L_strcat_zero_in_first_register:
     // Prefetch the src now, it's going to be used soon.
     pld     [r1, #0]
     lsls    lr, ip, #17
-    bne     strcat_sub8
-    bcs     strcat_sub7
+    bne     .L_strcat_sub8
+    bcs     .L_strcat_sub7
     lsls    ip, ip, #1
-    bne     strcat_sub6
+    bne     .L_strcat_sub6
 
     sub     r0, r0, #5
-    b       strcat_r0_scan_done
+    b       .L_strcat_r0_scan_done
 
-strcat_sub8:
+.L_strcat_sub8:
     sub     r0, r0, #8
-    b       strcat_r0_scan_done
+    b       .L_strcat_r0_scan_done
 
-strcat_sub7:
+.L_strcat_sub7:
     sub     r0, r0, #7
-    b       strcat_r0_scan_done
+    b       .L_strcat_r0_scan_done
 
-strcat_sub6:
+.L_strcat_sub6:
     sub     r0, r0, #6
-    b       strcat_r0_scan_done
+    b       .L_strcat_r0_scan_done
 
-strcat_zero_in_second_register:
+.L_strcat_zero_in_second_register:
     // Prefetch the src now, it's going to be used soon.
     pld     [r1, #0]
     lsls    lr, ip, #17
-    bne     strcat_sub4
-    bcs     strcat_sub3
+    bne     .L_strcat_sub4
+    bcs     .L_strcat_sub3
     lsls    ip, ip, #1
-    bne     strcat_sub2
+    bne     .L_strcat_sub2
 
     sub     r0, r0, #1
-    b       strcat_r0_scan_done
+    b       .L_strcat_r0_scan_done
 
-strcat_sub4:
+.L_strcat_sub4:
     sub     r0, r0, #4
-    b       strcat_r0_scan_done
+    b       .L_strcat_r0_scan_done
 
-strcat_sub3:
+.L_strcat_sub3:
     sub     r0, r0, #3
-    b       strcat_r0_scan_done
+    b       .L_strcat_r0_scan_done
 
-strcat_sub2:
+.L_strcat_sub2:
     sub     r0, r0, #2
-    b       strcat_r0_scan_done
+    b       .L_strcat_r0_scan_done
 END(strcat)
diff --git a/libc/arch-arm/cortex-a15/bionic/strlen.S b/libc/arch-arm/cortex-a15/bionic/strlen.S
index 9a0ce62..4fd6284 100644
--- a/libc/arch-arm/cortex-a15/bionic/strlen.S
+++ b/libc/arch-arm/cortex-a15/bionic/strlen.S
@@ -65,38 +65,38 @@
     mov     r1, r0
 
     ands    r3, r0, #7
-    beq     mainloop
+    beq     .L_mainloop
 
     // Align to a double word (64 bits).
     rsb     r3, r3, #8
     lsls    ip, r3, #31
-    beq     align_to_32
+    beq     .L_align_to_32
 
     ldrb    r2, [r1], #1
-    cbz     r2, update_count_and_return
+    cbz     r2, .L_update_count_and_return
 
-align_to_32:
-    bcc     align_to_64
+.L_align_to_32:
+    bcc     .L_align_to_64
     ands    ip, r3, #2
-    beq     align_to_64
+    beq     .L_align_to_64
 
     ldrb    r2, [r1], #1
-    cbz     r2, update_count_and_return
+    cbz     r2, .L_update_count_and_return
     ldrb    r2, [r1], #1
-    cbz     r2, update_count_and_return
+    cbz     r2, .L_update_count_and_return
 
-align_to_64:
+.L_align_to_64:
     tst     r3, #4
-    beq     mainloop
+    beq     .L_mainloop
     ldr     r3, [r1], #4
 
     sub     ip, r3, #0x01010101
     bic     ip, ip, r3
     ands    ip, ip, #0x80808080
-    bne     zero_in_second_register
+    bne     .L_zero_in_second_register
 
     .p2align 2
-mainloop:
+.L_mainloop:
     ldrd    r2, r3, [r1], #8
 
     pld     [r1, #64]
@@ -104,62 +104,62 @@
     sub     ip, r2, #0x01010101
     bic     ip, ip, r2
     ands    ip, ip, #0x80808080
-    bne     zero_in_first_register
+    bne     .L_zero_in_first_register
 
     sub     ip, r3, #0x01010101
     bic     ip, ip, r3
     ands    ip, ip, #0x80808080
-    bne     zero_in_second_register
-    b       mainloop
+    bne     .L_zero_in_second_register
+    b       .L_mainloop
 
-update_count_and_return:
+.L_update_count_and_return:
     sub     r0, r1, r0
     sub     r0, r0, #1
     bx      lr
 
-zero_in_first_register:
+.L_zero_in_first_register:
     sub     r0, r1, r0
     lsls    r3, ip, #17
-    bne     sub8_and_return
-    bcs     sub7_and_return
+    bne     .L_sub8_and_return
+    bcs     .L_sub7_and_return
     lsls    ip, ip, #1
-    bne     sub6_and_return
+    bne     .L_sub6_and_return
 
     sub     r0, r0, #5
     bx      lr
 
-sub8_and_return:
+.L_sub8_and_return:
     sub     r0, r0, #8
     bx      lr
 
-sub7_and_return:
+.L_sub7_and_return:
     sub     r0, r0, #7
     bx      lr
 
-sub6_and_return:
+.L_sub6_and_return:
     sub     r0, r0, #6
     bx      lr
 
-zero_in_second_register:
+.L_zero_in_second_register:
     sub     r0, r1, r0
     lsls    r3, ip, #17
-    bne     sub4_and_return
-    bcs     sub3_and_return
+    bne     .L_sub4_and_return
+    bcs     .L_sub3_and_return
     lsls    ip, ip, #1
-    bne     sub2_and_return
+    bne     .L_sub2_and_return
 
     sub     r0, r0, #1
     bx      lr
 
-sub4_and_return:
+.L_sub4_and_return:
     sub     r0, r0, #4
     bx      lr
 
-sub3_and_return:
+.L_sub3_and_return:
     sub     r0, r0, #3
     bx      lr
 
-sub2_and_return:
+.L_sub2_and_return:
     sub     r0, r0, #2
     bx      lr
 END(strlen)
diff --git a/libc/bionic/bionic_systrace.cpp b/libc/bionic/bionic_systrace.cpp
index 10521cf..103aa8f 100644
--- a/libc/bionic/bionic_systrace.cpp
+++ b/libc/bionic/bionic_systrace.cpp
@@ -21,6 +21,7 @@
 #include <stdlib.h>
 #include <string.h>
 
+#include "private/bionic_lock.h"
 #include "private/bionic_systrace.h"
 #include "private/libc_logging.h"
 
@@ -29,12 +30,17 @@
 
 #define WRITE_OFFSET   32
 
-static const prop_info* g_pinfo = NULL;
+constexpr char SYSTRACE_PROPERTY_NAME[] = "debug.atrace.tags.enableflags";
+
+static Lock g_lock;
+static const prop_info* g_pinfo;
 static uint32_t g_serial = -1;
-static uint64_t g_tags = 0;
+static uint64_t g_tags;
 static int g_trace_marker_fd = -1;
 
 static bool should_trace() {
+  bool result = false;
+  g_lock.lock();
   // If g_pinfo is null, this means that systrace hasn't been run and it's safe to
   // assume that no trace writing will need to take place.  However, to avoid running
   // this costly find check each time, we set it to a non-tracing value so that next
@@ -42,32 +48,39 @@
   // this function also deals with the bootup case, during which the call to property
   // set will fail if the property server hasn't yet started.
   if (g_pinfo == NULL) {
-    g_pinfo = __system_property_find("debug.atrace.tags.enableflags");
+    g_pinfo = __system_property_find(SYSTRACE_PROPERTY_NAME);
     if (g_pinfo == NULL) {
-      __system_property_set("debug.atrace.tags.enableflags", "0");
-      g_pinfo = __system_property_find("debug.atrace.tags.enableflags");
-      if (g_pinfo == NULL) {
-        return false;
-      }
+      __system_property_set(SYSTRACE_PROPERTY_NAME, "0");
+      g_pinfo = __system_property_find(SYSTRACE_PROPERTY_NAME);
     }
   }
-
-  // Find out which tags have been enabled on the command line and set
-  // the value of tags accordingly.  If the value of the property changes,
-  // the serial will also change, so the costly system_property_read function
-  // can be avoided by calling the much cheaper system_property_serial
-  // first.  The values within pinfo may change, but its location is guaranteed
-  // not to move.
-  const uint32_t cur_serial = __system_property_serial(g_pinfo);
-  if (cur_serial != g_serial) {
-    g_serial = cur_serial;
-    char value[PROP_VALUE_MAX];
-    __system_property_read(g_pinfo, 0, value);
-    g_tags = strtoull(value, NULL, 0);
+  if (g_pinfo != NULL) {
+    // Find out which tags have been enabled on the command line and set
+    // the value of tags accordingly.  If the value of the property changes,
+    // the serial will also change, so the costly system_property_read function
+    // can be avoided by calling the much cheaper system_property_serial
+    // first.  The values within pinfo may change, but its location is guaranteed
+    // not to move.
+    uint32_t cur_serial = __system_property_serial(g_pinfo);
+    if (cur_serial != g_serial) {
+      g_serial = cur_serial;
+      char value[PROP_VALUE_MAX];
+      __system_property_read(g_pinfo, 0, value);
+      g_tags = strtoull(value, NULL, 0);
+    }
+    result = ((g_tags & ATRACE_TAG_BIONIC) != 0);
   }
+  g_lock.unlock();
+  return result;
+}
 
-  // Finally, verify that this tag value enables bionic tracing.
-  return ((g_tags & ATRACE_TAG_BIONIC) != 0);
+static int get_trace_marker_fd() {
+  g_lock.lock();
+  if (g_trace_marker_fd == -1) {
+    g_trace_marker_fd = open("/sys/kernel/debug/tracing/trace_marker", O_CLOEXEC | O_WRONLY);
+  }
+  g_lock.unlock();
+  return g_trace_marker_fd;
 }
 
 ScopedTrace::ScopedTrace(const char* message) {
@@ -75,11 +88,9 @@
     return;
   }
 
-  if (g_trace_marker_fd == -1) {
-    g_trace_marker_fd = open("/sys/kernel/debug/tracing/trace_marker", O_CLOEXEC | O_WRONLY);
-    if (g_trace_marker_fd == -1) {
-      __libc_fatal("Could not open kernel trace file: %s\n", strerror(errno));
-    }
+  int trace_marker_fd = get_trace_marker_fd();
+  if (trace_marker_fd == -1) {
+    return;
   }
 
   // If bionic tracing has been enabled, then write the message to the
@@ -87,12 +98,10 @@
   int length = strlen(message);
   char buf[length + WRITE_OFFSET];
   size_t len = snprintf(buf, length + WRITE_OFFSET, "B|%d|%s", getpid(), message);
-  ssize_t wbytes = TEMP_FAILURE_RETRY(write(g_trace_marker_fd, buf, len));
 
-  // Error while writing
-  if (static_cast<size_t>(wbytes) != len) {
-    __libc_fatal("Could not write to kernel trace file: %s\n", strerror(errno));
-  }
+  // Tracing may stop just after checking property and before writing the message.
+  // So the write is acceptable to fail. See b/20666100.
+  TEMP_FAILURE_RETRY(write(trace_marker_fd, buf, len));
 }
 
 ScopedTrace::~ScopedTrace() {
@@ -100,10 +109,10 @@
     return;
   }
 
-  ssize_t wbytes = TEMP_FAILURE_RETRY(write(g_trace_marker_fd, "E", 1));
-
-  // Error while writing
-  if (static_cast<size_t>(wbytes) != 1) {
-    __libc_fatal("Could not write to kernel trace file: %s\n", strerror(errno));
+  int trace_marker_fd = get_trace_marker_fd();
+  if (trace_marker_fd == -1) {
+    return;
   }
+
+  TEMP_FAILURE_RETRY(write(trace_marker_fd, "E", 1));
 }
diff --git a/libc/bionic/sysconf.cpp b/libc/bionic/sysconf.cpp
index c301b27..61039b2 100644
--- a/libc/bionic/sysconf.cpp
+++ b/libc/bionic/sysconf.cpp
@@ -98,7 +98,8 @@
     case _SC_IOV_MAX:           return UIO_MAXIOV;
 
     case _SC_PAGESIZE:          // Fall through, PAGESIZE and PAGE_SIZE always hold the same value.
-    case _SC_PAGE_SIZE:         return PAGE_SIZE;
+    case _SC_PAGE_SIZE:         return static_cast<long>(getauxval(AT_PAGESZ));
+
     case _SC_XOPEN_UNIX:        return _XOPEN_UNIX;
     case _SC_AIO_LISTIO_MAX:    return _POSIX_AIO_LISTIO_MAX;     // Minimum requirement.
     case _SC_AIO_MAX:           return _POSIX_AIO_MAX;            // Minimum requirement.
diff --git a/libc/stdlib/atexit.c b/libc/stdlib/atexit.c
index a6970dd..34a4db1 100644
--- a/libc/stdlib/atexit.c
+++ b/libc/stdlib/atexit.c
@@ -37,6 +37,10 @@
 #include "atexit.h"
 #include "private/thread_private.h"
 
+/* BEGIN android-changed */
+#include "private/bionic_prctl.h"
+/* END android-changed */
+
 struct atexit {
 	struct atexit *next;		/* next in list */
 	int ind;			/* next index in this table */
@@ -95,6 +99,10 @@
 		    MAP_ANON | MAP_PRIVATE, -1, 0);
 		if (p == MAP_FAILED)
 			goto unlock;
+/* BEGIN android-changed */
+		prctl(PR_SET_VMA, PR_SET_VMA_ANON_NAME, p, pgsize,
+		    "atexit handlers");
+/* END android-changed */
 		if (__atexit == NULL) {
 			memset(&p->fns[0], 0, sizeof(p->fns[0]));
 			p->ind = 1;
@@ -204,6 +212,10 @@
 		    MAP_ANON | MAP_PRIVATE, -1, 0);
 		if (p == MAP_FAILED)
 			goto unlock;
+/* BEGIN android-changed */
+		prctl(PR_SET_VMA, PR_SET_VMA_ANON_NAME, p, pgsize,
+		    "atexit handlers");
+/* END android-changed */
 		p->ind = 1;
 		p->max = (pgsize - ((char *)&p->fns[0] - (char *)p)) /
 		    sizeof(p->fns[0]);
diff --git a/linker/linker.cpp b/linker/linker.cpp
index 0718efc..375b534 100644
--- a/linker/linker.cpp
+++ b/linker/linker.cpp
@@ -1999,9 +1999,32 @@
             DL_ERR("unknown weak reloc type %d @ %p (%zu)", type, rel, idx);
             return false;
         }
-      } else {
-        // We got a definition.
+      } else { // We got a definition.
+#if !defined(__LP64__)
+        // When relocating dso with text_relocation .text segment is
+        // not executable. We need to restore elf flags before resolving
+        // STT_GNU_IFUNC symbol.
+        bool protect_segments = has_text_relocations &&
+                                lsi == this &&
+                                ELF_ST_TYPE(s->st_info) == STT_GNU_IFUNC;
+        if (protect_segments) {
+          if (phdr_table_protect_segments(phdr, phnum, load_bias) < 0) {
+            DL_ERR("can't protect segments for \"%s\": %s",
+                   get_realpath(), strerror(errno));
+            return false;
+          }
+        }
+#endif
         sym_addr = lsi->resolve_symbol_address(s);
+#if !defined(__LP64__)
+        if (protect_segments) {
+          if (phdr_table_unprotect_segments(phdr, phnum, load_bias) < 0) {
+            DL_ERR("can't unprotect loadable segments for \"%s\": %s",
+                   get_realpath(), strerror(errno));
+            return false;
+          }
+        }
+#endif
       }
       count_relocation(kRelocSymbol);
     }
@@ -2038,7 +2061,32 @@
         TRACE_TYPE(RELO, "RELO IRELATIVE %16p <- %16p\n",
                     reinterpret_cast<void*>(reloc),
                     reinterpret_cast<void*>(load_bias + addend));
-        *reinterpret_cast<ElfW(Addr)*>(reloc) = call_ifunc_resolver(load_bias + addend);
+        {
+#if !defined(__LP64__)
+          // When relocating dso with text_relocation .text segment is
+          // not executable. We need to restore elf flags for this
+          // particular call.
+          if (has_text_relocations) {
+            if (phdr_table_protect_segments(phdr, phnum, load_bias) < 0) {
+              DL_ERR("can't protect segments for \"%s\": %s",
+                     get_realpath(), strerror(errno));
+              return false;
+            }
+          }
+#endif
+          ElfW(Addr) ifunc_addr = call_ifunc_resolver(load_bias + addend);
+#if !defined(__LP64__)
+          // Unprotect it afterwards...
+          if (has_text_relocations) {
+            if (phdr_table_unprotect_segments(phdr, phnum, load_bias) < 0) {
+              DL_ERR("can't unprotect loadable segments for \"%s\": %s",
+                     get_realpath(), strerror(errno));
+              return false;
+            }
+          }
+#endif
+          *reinterpret_cast<ElfW(Addr)*>(reloc) = ifunc_addr;
+        }
         break;
 
 #if defined(__aarch64__)
diff --git a/tests/unistd_test.cpp b/tests/unistd_test.cpp
index 79c16d7..b29c6f3 100644
--- a/tests/unistd_test.cpp
+++ b/tests/unistd_test.cpp
@@ -694,6 +694,8 @@
   VERIFY_SYSCONF_POSITIVE(_SC_IOV_MAX);
   VERIFY_SYSCONF_POSITIVE(_SC_PAGESIZE);
   VERIFY_SYSCONF_POSITIVE(_SC_PAGE_SIZE);
+  VerifySysconf(_SC_PAGE_SIZE, "_SC_PAGE_SIZE",
+                [](long v){return v == sysconf(_SC_PAGESIZE) && v == getpagesize();});
   VERIFY_SYSCONF_POSITIVE(_SC_XOPEN_UNIX);
   VERIFY_SYSCONF_POSITIVE(_SC_AIO_LISTIO_MAX);
   VERIFY_SYSCONF_POSITIVE(_SC_AIO_MAX);