initial version of mips (o32) port, based on work by Richard Pennington (rdp)

basically, this version of the code was obtained by starting with
rdp's work from his ellcc source tree, adapting it to musl's build
system and coding style, auditing the bits headers for discrepencies
with kernel definitions or glibc/LSB ABI or large file issues, fixing
up incompatibility with the old binutils from aboriginal linux, and
adding some new special cases to deal with the oddities of sigaction
and pipe syscall interfaces on mips.

at present, minimal test programs work, but some interfaces are broken
or missing. threaded programs probably will not link.

1 files changed, 40 insertions, 0 deletions

diff --git a/arch/mips/bits/user.h b/arch/mips/bits/user.h
new file mode 100644
index 00000000..c533fd8d
--- /dev/null
+++ b/arch/mips/bits/user.h
@@ -0,0 +1,40 @@
+struct user_fpregs_struct
+{
+	struct fp_reg {
+		unsigned sign1:1;
+		unsigned unused:15;
+		unsigned sign2:1;
+		unsigned exponent:14;
+		unsigned j:1;
+		unsigned mantissa1:31;
+		unsigned mantissa0:32;
+	} fpregs[8];
+	unsigned fpsr:32;
+	unsigned fpcr:32;
+	unsigned char ftype[8];
+	unsigned int init_flag;
+};
+
+struct user_regs_struct
+{
+	unsigned long uregs[18];
+};
+
+struct user
+{
+	struct user_regs_struct		regs;
+	int				u_fpvalid;
+	unsigned long			u_tsize;
+	unsigned long			u_dsize;
+	unsigned long			u_ssize;
+	unsigned long			start_code;
+	unsigned long			start_stack;
+	long				signal;
+	int				reserved;
+	struct user_regs_struct		*u_ar0;
+	unsigned long int		magic;
+	char				u_comm[32];
+	int				u_debugreg[8];
+	struct user_fpregs_struct	u_fp;
+	struct user_fpregs_struct	*u_fp0;
+};