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author | Jack Rosenthal <jrosenth@chromium.org> | 2021-11-04 12:11:58 -0600 |
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committer | Commit Bot <commit-bot@chromium.org> | 2021-11-05 04:22:34 +0000 |
commit | 252457d4b21f46889eebad61d4c0a65331919cec (patch) | |
tree | 01856c4d31d710b20e85a74c8d7b5836e35c3b98 /chip/it83xx/it83xx_fpu.S | |
parent | 08f5a1e6fc2c9467230444ac9b582dcf4d9f0068 (diff) | |
download | chrome-ec-release-R98-14388.B-ish.tar.gz |
ish: Trim down the release branchstabilize-wristpin-14469.59.B-ishstabilize-voshyr-14637.B-ishstabilize-quickfix-14695.187.B-ishstabilize-quickfix-14695.124.B-ishstabilize-quickfix-14526.91.B-ishstabilize-14695.85.B-ishstabilize-14695.107.B-ishstabilize-14682.B-ishstabilize-14633.B-ishstabilize-14616.B-ishstabilize-14589.B-ishstabilize-14588.98.B-ishstabilize-14588.14.B-ishstabilize-14588.123.B-ishstabilize-14536.B-ishstabilize-14532.B-ishstabilize-14528.B-ishstabilize-14526.89.B-ishstabilize-14526.84.B-ishstabilize-14526.73.B-ishstabilize-14526.67.B-ishstabilize-14526.57.B-ishstabilize-14498.B-ishstabilize-14496.B-ishstabilize-14477.B-ishstabilize-14469.9.B-ishstabilize-14469.8.B-ishstabilize-14469.58.B-ishstabilize-14469.41.B-ishstabilize-14442.B-ishstabilize-14438.B-ishstabilize-14411.B-ishstabilize-14396.B-ishstabilize-14395.B-ishstabilize-14388.62.B-ishstabilize-14388.61.B-ishstabilize-14388.52.B-ishstabilize-14385.B-ishstabilize-14345.B-ishstabilize-14336.B-ishstabilize-14333.B-ishrelease-R99-14469.B-ishrelease-R98-14388.B-ishrelease-R102-14695.B-ishrelease-R101-14588.B-ishrelease-R100-14526.B-ishfirmware-cherry-14454.B-ishfirmware-brya-14505.B-ishfirmware-brya-14505.71.B-ishfactory-kukui-14374.B-ishfactory-guybrush-14600.B-ishfactory-cherry-14455.B-ishfactory-brya-14517.B-ish
In the interest of making long-term branch maintenance incur as little
technical debt on us as possible, we should not maintain any files on
the branch we are not actually using.
This has the added effect of making it extremely clear when merging CLs
from the main branch when changes have the possibility to affect us.
The follow-on CL adds a convenience script to actually pull updates from
the main branch and generate a CL for the update.
BUG=b:204206272
BRANCH=ish
TEST=make BOARD=arcada_ish && make BOARD=drallion_ish
Signed-off-by: Jack Rosenthal <jrosenth@chromium.org>
Change-Id: I17e4694c38219b5a0823e0a3e55a28d1348f4b18
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3262038
Reviewed-by: Jett Rink <jettrink@chromium.org>
Reviewed-by: Tom Hughes <tomhughes@chromium.org>
Diffstat (limited to 'chip/it83xx/it83xx_fpu.S')
-rw-r--r-- | chip/it83xx/it83xx_fpu.S | 145 |
1 files changed, 0 insertions, 145 deletions
diff --git a/chip/it83xx/it83xx_fpu.S b/chip/it83xx/it83xx_fpu.S deleted file mode 100644 index 5265eb7253..0000000000 --- a/chip/it83xx/it83xx_fpu.S +++ /dev/null @@ -1,145 +0,0 @@ -/* Copyright 2017 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -#include "config_chip.h" - -/* - * DLMB register = 0x80189: - * Disable all interrupts and switching CPU's - * ALU (Arithmetic Logic Unit) to floating point operation mode. - * (IEEE standard 754 floating point) - * - * DLMB register = 0x80009: - * Restore interrupts and ALU. - */ - .text - .align 2 - .global __addsf3 - .type __addsf3, @function -__addsf3: - sethi $r2, 0x80 /* r2 = 0x80000 */ - addi $r3, $r2, 0x189 /* r3 = 0x80189 */ - addi45 $r2, 0x9 /* r2 = 0x80009 */ - mtsr $r3, $dlmb /* dlmb = 0x80189 */ - dsb - /* Floating-point addition single-precision */ - add45 $r0, $r1 - mtsr $r2, $dlmb /* dlmb = 0x80009 */ - dsb - ret5 $lp - .size __addsf3, .-__addsf3 - - .text - .align 2 - .global __subsf3 - .type __subsf3, @function -__subsf3: - sethi $r2, 0x80 /* r2 = 0x80000 */ - addi $r3, $r2, 0x189 /* r3 = 0x80189 */ - addi45 $r2, 0x9 /* r2 = 0x80009 */ - mtsr $r3, $dlmb /* dlmb = 0x80189 */ - dsb - /* Floating-point subtraction single-precision */ - sub45 $r0, $r1 - mtsr $r2, $dlmb /* dlmb = 0x80009 */ - dsb - ret5 $lp - .size __subsf3, .-__subsf3 - - .text - .align 2 - .global __mulsf3 - .type __mulsf3, @function -__mulsf3: -#ifdef IT83XX_FPU_MUL_BY_DIV -#define SIGN $r2 -#define EXPOA $r3 -#define MANTA $r4 -#define VALUA $r5 -#define EXPOB $r6 -#define MANTB $r7 -#define VALUB $r8 -#define SPROD $r15 - /* save r6-r8 */ - smw.adm $r6, [$sp], $r8, #0x0 - xor SPROD, $r1, $r0 /* sign(A xor B) */ - move SIGN, #0x80000000 - and SPROD, SPROD, SIGN /* store sign bit */ - slli VALUA, $r0, 1 /* A<<1, (exponent and mantissa) */ - slli VALUB, $r1, 1 /* B<<1, (exponent and mantissa) */ - srli EXPOA, VALUA, 24 /* exponent(A) */ - srli EXPOB, VALUB, 24 /* exponent(B) */ - slli MANTA, VALUA, 7 /* A<<8, mantissa(A) with exponent's LSB */ - slli MANTB, VALUB, 7 /* A<<8, mantissa(B) with exponent's LSB */ - beqz VALUA, .LFzeroA /* exponent(A) and mantissa (A) are zero */ - beqc EXPOA, 0xff, .LFinfnanA /* A is inf or NaN */ - beqz VALUB, .LFzeroB /* exponent(B) and mantissa (B) are zero */ - beqc EXPOB, 0xff, .LFinfnanB /* B is inf or NaN */ - /* A*B = A/(1/B) */ - sethi $r2, 0x80 /* r2 = 0x80000 */ - addi $r3, $r2, 0x189 /* r3 = 0x80189 */ - addi45 $r2, 0x9 /* r2 = 0x80009 */ - mtsr $r3, $dlmb /* dlmb = 0x80189 */ - dsb - sethi $r5, #0x3f800 /* r5 = 1.0f */ - divsr $r1,$r1,$r5,$r1 /* r1 = 1.0f / r1 */ - divsr $r0,$r0,$r0,$r1 /* r0 = r0 / r1 */ - mtsr $r2, $dlmb /* dlmb = 0x80009 */ - dsb -.LFret: - /* restore r6-r8 */ - lmw.bim $r6, [$sp], $r8, #0x0 - ret5 $lp - -.LFzeroA: /* A is zero */ - beqc EXPOB, 0xff, .LFnan/*zero * inf = zero * NaN = NaN */ -.LFzero: - move $r0, SPROD /* return 0.0f or -0.0f */ - b .LFret -.LFinfnanA: /* exponent(A) is 0xff */ - bne MANTA, SIGN, .LFnan/* A is NaN: NaN * B = NaN */ - beqz VALUB, .LFnan /* A is inf and B is zero: inf * zero = NaN */ - bnec EXPOB, 0xff, .LFinf/* B is finite: inf * B = inf */ -.LFinfnanB: /* exponent(B) is 0xff */ - bne MANTB, SIGN, .LFnan/* B is NaN: A * NaN = NaN */ -.LFinf: - move $r0, #0x7f800000 - or $r0, $r0, SPROD /* return inf or -inf */ - b .LFret -.LFzeroB: /* B is zero and A is finit */ - b .LFzero /* B is zero */ -.LFnan: - move $r0, #0xffc00000 /* return NaN */ - b .LFret -#else /* !IT83XX_FPU_MUL_BY_DIV */ - sethi $r2, 0x80 /* r2 = 0x80000 */ - addi $r3, $r2, 0x189 /* r3 = 0x80189 */ - addi45 $r2, 0x9 /* r2 = 0x80009 */ - mtsr $r3, $dlmb /* dlmb = 0x80189 */ - dsb - /* Floating-point multiplication single-precision */ - mul33 $r0, $r1 - mtsr $r2, $dlmb /* dlmb = 0x80009 */ - dsb - ret5 $lp -#endif /* IT83XX_FPU_MUL_BY_DIV */ - .size __mulsf3, .-__mulsf3 - - .text - .align 2 - .global __divsf3 - .type __divsf3, @function -__divsf3: - sethi $r2, 0x80 /* r2 = 0x80000 */ - addi $r3, $r2, 0x189 /* r3 = 0x80189 */ - addi45 $r2, 0x9 /* r2 = 0x80009 */ - mtsr $r3, $dlmb /* dlmb = 0x80189 */ - dsb - /* Floating-point division single-precision */ - divsr $r0,$r0,$r0,$r1 - mtsr $r2, $dlmb /* dlmb = 0x80009 */ - dsb - ret5 $lp - .size __divsf3, .-__divsf3 |