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libucontext
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fix arm hard float code path broken by 9e5de65076

pull/37/head
Richard Campbell 2024-11-20 13:29:46 -08:00
parent a0323579ac
commit 1675e19101
2 changed files with 7 additions and 7 deletions
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3
Makefile
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@ -42,8 +42,7 @@ else
CPPFLAGS += -Iarch/common/include
endif
# ARM hard float support is presently broken.
FORCE_SOFT_FLOAT := yes
FORCE_SOFT_FLOAT := no
ifeq ($(FORCE_SOFT_FLOAT),yes)
CPPFLAGS += -DFORCE_SOFT_FLOAT

11
arch/arm/swapcontext.S
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@ -16,13 +16,17 @@ ALIAS(swapcontext, libucontext_swapcontext)
ALIAS(__swapcontext, libucontext_swapcontext)
FUNC(libucontext_swapcontext)
/* copy all of the current registers into the ucontext structure */
str r13, [r0,#REG_OFFSET(13)]
str r14, [r0,#REG_OFFSET(15)]
#ifndef FORCE_SOFT_FLOAT
#ifndef FORCE_HARD_FLOAT
/* test for vfp magic number, copy to other ucontext */
ldr r3, [r1, #VFP_MAGIC_OFFSET]
ldr r4, =#0x56465001
ldr r2, =#0x56465001
str r3, [r0, #VFP_MAGIC_OFFSET]
cmp r3, r4
cmp r3, r2
bne 1f
#endif
/* if vfp in use, save and restore d8-d15 */
@ -36,9 +40,6 @@ FUNC(libucontext_swapcontext)
1:
#endif
/* copy all of the current registers into the ucontext structure */
str r13, [r0,#REG_OFFSET(13)]
str r14, [r0,#REG_OFFSET(15)]
add r2, r0, #REG_OFFSET(0)
/* copy r0 with value 0 to indicate success (return value 0) */
mov r0, #0