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powerpc/ps3: Fix lv1 hcall assembly for ELFv2 calling convention

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Stack-passed parameters begin at a different offset in the caller's
stack in the ELFv2 ABI.

Reported-by: Geoff Levand <geoff@infradead.org>
Fixes: 8c5fa3b5c4 ("powerpc/64: Make ELFv2 the default for big-endian builds")
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Tested-by: Geoff Levand <geoff@infradead.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20231227072405.63751-2-npiggin@gmail.com
This commit is contained in:
Nicholas Piggin
2023-12-27 17:24:03 +10:00
committed by Michael Ellerman
parent 6e9de2054e
commit 6735fef14c
2 changed files with 13 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files
arch/powerpc/include/asm/ppc_asm.h
+4 -2
View File
@@ -201,11 +201,13 @@
#ifdef CONFIG_PPC64_ELF_ABI_V2
#define STK_GOT 24
#define __STK_PARAM(i) (32 + ((i)-3)*8)
#define STK_PARAM_AREA 32
#else
#define STK_GOT 40
#define __STK_PARAM(i) (48 + ((i)-3)*8)
#define STK_PARAM_AREA 48
#endif
#define __STK_PARAM(i) (STK_PARAM_AREA + ((i)-3)*8)
#define STK_PARAM(i) __STK_PARAM(__REG_##i)
#ifdef CONFIG_PPC64_ELF_ABI_V2
arch/powerpc/platforms/ps3/hvcall.S
+9 -9
View File
@@ -714,7 +714,7 @@ _GLOBAL(_##API_NAME) \
std r4, 0(r11); \
ld r11, -16(r1); \
std r5, 0(r11); \
ld r11, 48+8*8(r1); \
ld r11, STK_PARAM_AREA+8*8(r1); \
std r6, 0(r11); \
\
ld r0, 16(r1); \
@@ -746,22 +746,22 @@ _GLOBAL(_##API_NAME) \
mflr r0; \
std r0, 16(r1); \
\
std r10, 48+8*7(r1); \
std r10, STK_PARAM_AREA+8*7(r1); \
\
li r11, API_NUMBER; \
lv1call; \
\
ld r11, 48+8*7(r1); \
ld r11, STK_PARAM_AREA+8*7(r1); \
std r4, 0(r11); \
ld r11, 48+8*8(r1); \
ld r11, STK_PARAM_AREA+8*8(r1); \
std r5, 0(r11); \
ld r11, 48+8*9(r1); \
ld r11, STK_PARAM_AREA+8*9(r1); \
std r6, 0(r11); \
ld r11, 48+8*10(r1); \
ld r11, STK_PARAM_AREA+8*10(r1); \
std r7, 0(r11); \
ld r11, 48+8*11(r1); \
ld r11, STK_PARAM_AREA+8*11(r1); \
std r8, 0(r11); \
ld r11, 48+8*12(r1); \
ld r11, STK_PARAM_AREA+8*12(r1); \
std r9, 0(r11); \
\
ld r0, 16(r1); \
@@ -777,7 +777,7 @@ _GLOBAL(_##API_NAME) \
li r11, API_NUMBER; \
lv1call; \
\
ld r11, 48+8*8(r1); \
ld r11, STK_PARAM_AREA+8*8(r1); \
std r4, 0(r11); \
\
ld r0, 16(r1); \