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target/arm/arm-semi: Factor out implementation of SYS_ISTTY

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Factor out the implementation of SYS_ISTTY via the new function
tables.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20190916141544.17540-11-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2019-09-16 15:15:39 +01:00
parent 2c3a09a620
commit 0213fa452f
1 changed files with 15 additions and 5 deletions
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20
target/arm/arm-semi.c
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@ -388,6 +388,7 @@ typedef uint32_t sys_writefn(ARMCPU *cpu, GuestFD *gf,
target_ulong buf, uint32_t len);
typedef uint32_t sys_readfn(ARMCPU *cpu, GuestFD *gf,
target_ulong buf, uint32_t len);
typedef uint32_t sys_isattyfn(ARMCPU *cpu, GuestFD *gf);
static uint32_t host_closefn(ARMCPU *cpu, GuestFD *gf)
{
@ -436,6 +437,11 @@ static uint32_t host_readfn(ARMCPU *cpu, GuestFD *gf,
return len - ret;
}
static uint32_t host_isattyfn(ARMCPU *cpu, GuestFD *gf)
{
return isatty(gf->hostfd);
}
static uint32_t gdb_closefn(ARMCPU *cpu, GuestFD *gf)
{
return arm_gdb_syscall(cpu, arm_semi_cb, "close,%x", gf->hostfd);
@ -457,10 +463,16 @@ static uint32_t gdb_readfn(ARMCPU *cpu, GuestFD *gf,
gf->hostfd, buf, len);
}
static uint32_t gdb_isattyfn(ARMCPU *cpu, GuestFD *gf)
{
return arm_gdb_syscall(cpu, arm_semi_cb, "isatty,%x", gf->hostfd);
}
typedef struct GuestFDFunctions {
sys_closefn *closefn;
sys_writefn *writefn;
sys_readfn *readfn;
sys_isattyfn *isattyfn;
} GuestFDFunctions;
static const GuestFDFunctions guestfd_fns[] = {
@ -468,11 +480,13 @@ static const GuestFDFunctions guestfd_fns[] = {
.closefn = host_closefn,
.writefn = host_writefn,
.readfn = host_readfn,
.isattyfn = host_isattyfn,
},
[GuestFDGDB] = {
.closefn = gdb_closefn,
.writefn = gdb_writefn,
.readfn = gdb_readfn,
.isattyfn = gdb_isattyfn,
},
};
@ -631,11 +645,7 @@ target_ulong do_arm_semihosting(CPUARMState *env)
return set_swi_errno(env, -1);
}
if (use_gdb_syscalls()) {
return arm_gdb_syscall(cpu, arm_semi_cb, "isatty,%x", gf->hostfd);
} else {
return isatty(gf->hostfd);
}
return guestfd_fns[gf->type].isattyfn(cpu, gf);
case TARGET_SYS_SEEK:
GET_ARG(0);
GET_ARG(1);