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Implement alloca for RV64

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This commit is contained in:
Aleksi Hannula 2025-11-21 09:34:30 +02:00
parent e7be7b192d
commit 3c631fdb6d
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2 changed files with 19 additions and 5 deletions
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10
lib/Makefile
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@ -35,12 +35,12 @@ endif
XFLAGS += -I$(TOP) XFLAGS += -I$(TOP)
I386_O = libtcc1.o alloca.o alloca-bt.o $(COMMON_O) I386_O = libtcc1.o alloca-bt.o $(COMMON_O)
X86_64_O = libtcc1.o alloca.o alloca-bt.o $(COMMON_O) X86_64_O = libtcc1.o alloca-bt.o $(COMMON_O)
ARM_O = libtcc1.o armeabi.o alloca.o armflush.o $(COMMON_O) ARM_O = libtcc1.o armeabi.o armflush.o $(COMMON_O)
ARM64_O = lib-arm64.o alloca.o $(COMMON_O) ARM64_O = lib-arm64.o $(COMMON_O)
RISCV64_O = lib-arm64.o $(COMMON_O) RISCV64_O = lib-arm64.o $(COMMON_O)
COMMON_O = stdatomic.o atomic.o builtin.o COMMON_O = stdatomic.o atomic.o builtin.o alloca.o
WIN_O = crt1.o crt1w.o wincrt1.o wincrt1w.o dllcrt1.o dllmain.o WIN_O = crt1.o crt1w.o wincrt1.o wincrt1w.o dllcrt1.o dllmain.o
LIN_O = dsohandle.o LIN_O = dsohandle.o
OSX_O = OSX_O =

14
lib/alloca.S
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@ -142,4 +142,18 @@ p100:
#endif #endif
.size alloca, .-alloca .size alloca, .-alloca
/* ---------------------------------------------- */ /* ---------------------------------------------- */
#elif defined __riscv
.text
.align 2
.global alloca
.type alloca, %function
alloca:
sub sp, sp, a0
addi sp, sp, -15
andi sp, sp, -16
add a0, sp, zero
ret
.size alloca, .-alloca
/* ---------------------------------------------- */
#endif #endif