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| author | Bernhard Schommer <bernhardschommer@gmail.com> | 2016-08-29 14:54:06 +0200 |
|---|---|---|
| committer | Bernhard Schommer <bernhardschommer@gmail.com> | 2016-08-29 14:54:06 +0200 |
| commit | 5cf814404cec9a8702e4bfa88e0f9176fa04ecfb (patch) | |
| tree | fabd44046e3e5b9aaac7f33b9e4dddaa8d3f06e8 /runtime/arm/i64_sdiv.S | |
| parent | 3208e22ea89c459a5a7944ad8e82511d4a5328fa (diff) | |
| parent | 477f73ef96d957de5a896a05175ceaab7e0dce03 (diff) | |
| download | compcert-5cf814404cec9a8702e4bfa88e0f9176fa04ecfb.tar.gz compcert-5cf814404cec9a8702e4bfa88e0f9176fa04ecfb.zip | |
Merge branch 'master' into advanced-diagnostics
Diffstat (limited to 'runtime/arm/i64_sdiv.S')
| -rw-r--r-- | runtime/arm/i64_sdiv.S | 34 |
1 files changed, 17 insertions, 17 deletions
diff --git a/runtime/arm/i64_sdiv.S b/runtime/arm/i64_sdiv.S index dd88c12a..358312da 100644 --- a/runtime/arm/i64_sdiv.S +++ b/runtime/arm/i64_sdiv.S @@ -17,7 +17,7 @@ @ * Neither the name of the <organization> nor the @ names of its contributors may be used to endorse or promote products @ derived from this software without specific prior written permission. -@ +@ @ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS @ "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT @ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR @@ -36,26 +36,26 @@ #include "sysdeps.h" -@@@ Signed division - +@@@ Signed division + FUNCTION(__i64_sdiv) push {r4, r5, r6, r7, r8, r10, lr} - ASR r4, r1, #31 @ r4 = sign of N - ASR r5, r3, #31 @ r5 = sign of D + ASR r4, Reg0HI, #31 @ r4 = sign of N + ASR r5, Reg1HI, #31 @ r5 = sign of D EOR r10, r4, r5 @ r10 = sign of result - EOR r0, r0, r4 @ take absolute value of N - EOR r1, r1, r4 @ N = (N ^ (N >>s 31)) - (N >>s 31) - subs r0, r0, r4 - sbc r1, r1, r4 - EOR r2, r2, r5 @ take absolute value of D - EOR r3, r3, r5 - subs r2, r2, r5 - sbc r3, r3, r5 + EOR Reg0LO, Reg0LO, r4 @ take absolute value of N + EOR Reg0HI, Reg0HI, r4 @ N = (N ^ (N >>s 31)) - (N >>s 31) + subs Reg0LO, Reg0LO, r4 + sbc Reg0HI, Reg0HI, r4 + EOR Reg1LO, Reg1LO, r5 @ take absolute value of D + EOR Reg1HI, Reg1HI, r5 + subs Reg1LO, Reg1LO, r5 + sbc Reg1HI, Reg1HI, r5 bl __i64_udivmod @ do unsigned division - EOR r0, r4, r10 @ apply expected sign - EOR r1, r5, r10 - subs r0, r0, r10 - sbc r1, r1, r10 + EOR Reg0LO, Reg2LO, r10 @ apply expected sign + EOR Reg0HI, Reg2HI, r10 + subs Reg0LO, Reg0LO, r10 + sbc Reg0HI, Reg0HI, r10 pop {r4, r5, r6, r7, r8, r10, lr} bx lr ENDFUNCTION(__i64_sdiv) |