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ARM divsi3.S: raise(SIGFPE) when called for

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. raise(SIGFPE) for modulo-0/divide-0 operations in
	  internal int division functions
	. gcc: do not link with -lgcc anywhere so these internal
	  functions are always used from libc instead of (sometimes)
	  masked by -lgcc
	. together fixes test53 on ARM

Change-Id: I31ec19dfdd68b8a92695595da901874e63106f9d
This commit is contained in:
Ben Gras 2013-02-09 20:38:45 +01:00
parent 4ac7206c6f
commit 5a0585359d
5 changed files with 11 additions and 1 deletions
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2
common/lib/libc/arch/arm/gen/divsi3.S
View file

@ -22,7 +22,7 @@
*/
.L_overflow:
#if !defined(_KERNEL) && !defined(_STANDALONE) && !defined(__minix)
#if !defined(_KERNEL) && !defined(_STANDALONE) && !defined(_LIBMINC)
mov r0, #8 /* SIGFPE */
bl PIC_SYM(_C_LABEL(raise), PLT) /* raise it */
mov r0, #0

4
external/gpl3/gcc/files/arm-minix.h vendored
View file

@ -67,3 +67,7 @@
#undef TARGET_VERSION
#define TARGET_VERSION fputs (" (MINIX/arm ELF EABI)", stderr);
/* suppress -lgcc - don't include %G (-lgcc) in the libraries */
#undef LINK_GCC_C_SEQUENCE_SPEC
#define LINK_GCC_C_SEQUENCE_SPEC "%L"

1
kernel/arch/earm/pre_init.c
View file

@ -284,3 +284,4 @@ kinfo_t *pre_init(u32_t magic, u32_t ebx)
int send_sig(endpoint_t proc_nr, int sig_nr) { return 0; }
void minix_shutdown(timer_t *t) { arch_shutdown(RBT_PANIC); }
void busy_delay_ms(int x) { }
int raise(int n) { panic("raise(%d)\n", n); }

1
kernel/arch/i386/pre_init.c
View file

@ -243,3 +243,4 @@ kinfo_t *pre_init(u32_t magic, u32_t ebx)
int send_sig(endpoint_t proc_nr, int sig_nr) { return 0; }
void minix_shutdown(timer_t *t) { arch_shutdown(RBT_PANIC); }
void busy_delay_ms(int x) { }
int raise(int sig) { panic("raise(%d)\n", sig); }

4
share/mk/minix.bootprog.mk
View file

@ -10,7 +10,11 @@ LDADD+= -nodefaultlibs
# 2. Compiler-specific libs
.if !empty(CC:M*gcc)
.if (${MACHINE_ARCH} == "earm")
LDADD+= -lsys
.else
LDADD+= -lgcc -lsys -lgcc
.endif
.elif !empty(CC:M*clang)
LDADD+= -L/usr/pkg/compiler-rt/lib -lCompilerRT-Generic -lsys -lCompilerRT-Generic
.endif